Exterior mirrors: Difference between revisions

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(→‎Glass: ALKAR and BLIC are identical.)
 
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== Facelift ==
== Description ==
[[File:W220_exterior_mirror_facelift.jpg|thumb|none|Exterior mirror of [[facelift]] vehicle.]]
[[Facelift]] vehicles compared to pre-[[facelift]] vehicles have differences exterior mirror appearance and mechanism.


=== Parts ===
{|
|[[File:W220_exterior_mirror_facelift.jpg|thumb|none|Exterior mirror of [[facelift]] vehicle.]]
|[[File:W220_exterior_mirror_prefacelift.jpg|thumb|none|Exterior mirror of pre-[[facelift]] vehicle.]]
|}


== Parts (facelift) ==
{|
{|
|[[File:W220_LEFT_OUTSIDE_REARVIEW_MIRROR_EPC.png|thumb|none|Left outside rearview mirror (from EPC).]]
|[[File:W220_LEFT_OUTSIDE_REARVIEW_MIRROR_EPC.png|thumb|none|Left outside rearview mirror (from EPC).]]
Line 9: Line 13:
|}
|}


==== Outside rearview mirror ====
=== Outside rearview mirror ===
Part number A2208100576 (left) and A2208100876 (right).
Part number A2208100576 (left) and A2208100876 (right).
The part comes without glass and cover as shown in the picture below.
The part comes without glass and cover as shown in the picture below.
Line 17: Line 21:
|[[File:W220_A2208100876_package.jpg|thumb|none|Rearview mirror (A2208100876).]]
|[[File:W220_A2208100876_package.jpg|thumb|none|Rearview mirror (A2208100876).]]
|[[File:W220_exterior_mirror_right_door_holes.jpg|thumb|none|Holes in the door.]]
|[[File:W220_exterior_mirror_right_door_holes.jpg|thumb|none|Holes in the door.]]
|[[File:W220_right_mirror_casing_removed.jpg|thumb|none|Rearview mirror cover removed]]
|}
|}


==== Mirror cover ====
=== Mirror cover ===
Part number for mirror cover is A2208100964 (left) and A2208101064 (right).
Part number for mirror cover is A2208100964 (left) and A2208101064 (right).
The part comes without turn signal light module.
The part comes without turn signal light module.
Line 29: Line 34:
|}
|}


==== Turn signal light ====
=== Turn signal light ===
Turn signal light (blinker lamp) has part numbers:
 
Left:
* A2208200521 - EUR 50
* ULO 3105001 (OEM) - EUR 42
 
Right:
* A2208200621 - EUR 50
* ULO 3105002 (OEM) - EUR 42


Turn signal light (blinker lamp) has part number A2208200521 (left) and A2208200621 (right).
On eBay there are cheap (~EUR 20) Chinese blinkers without vanity light wiring.


For the vanity light bulb there is [[LED upgrade]] available.
For the vanity light bulb there is [[LED upgrade]] available.
Line 37: Line 51:
|[[File:W220_A2208200621_front.jpg|thumb|none|A2208200621 (front).]]
|[[File:W220_A2208200621_front.jpg|thumb|none|A2208200621 (front).]]
|[[File:W220_A2208200621_back.jpg|thumb|none|A2208200621 (back).]]
|[[File:W220_A2208200621_back.jpg|thumb|none|A2208200621 (back).]]
|[[File:W220_mirror_turn_signal_led_cover_removed.jpg|thumb|none|A2208200521 with cover removed.]]
|}
|}


==== Adjustment motor ====
Due to aging the plastic clips holding the LED cover become fragile and break off.
This lets the moisture to enter the LED casing. If not fixed the LED will burn out and can even cause [[door control module]] damage.
The moisture can be dried out using a heat gun and the broken clip can be fixed using a paper clip (see below).
 
{|
|[[File:W220_mirror_turn_signal_led_moisture.jpg|thumb|none|Moisture in casing.]]
|[[File:W220_mirror_turn_signal_led_broken_cover_clip.jpg|thumb|none|Cover with broken clip.]]
|}
{|
|[[File:W220_mirror_turn_signal_led_broken_cover_clip_fix.jpg|thumb|none|Broken clip fixed with paper clip.]]
|[[File:W220_mirror_turn_signal_led_broken_cover_clip_fix_installed.jpg|thumb|none|Lamp installed in mirror cover.]]
|}


=== Adjustment motor ===
Electronic adjustment motor A2038202242 is used on both sides.
Electronic adjustment motor A2038202242 is used on both sides.
{|
{|
Line 46: Line 73:
|[[File:W220_exterior_mirror_motor_A2038202242_back.jpg|thumb|none|A2038202242 (back).]]
|[[File:W220_exterior_mirror_motor_A2038202242_back.jpg|thumb|none|A2038202242 (back).]]
|[[File:W220_exterior_mirror_motor_A2038202242_connector.jpg|thumb|none|A2038202242 (connector pins).]]
|[[File:W220_exterior_mirror_motor_A2038202242_connector.jpg|thumb|none|A2038202242 (connector pins).]]
|}
{|
|[[File:W220_exterior_mirror_motor_A2038202242_opened_outside.jpg|thumb|none|A2038202242 opened (outside).]]
|[[File:W220_exterior_mirror_motor_A2038202242_opened_inside.jpg|thumb|none|A2038202242 opened (inside).]]
|}
|}


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|}
|}


==== Seals ====
=== Gasket ===
 
Mirror gasket (seal) part number is A2208110198 (left) and A2208110298 (right).
Mirror seals (gaskets) have part number A2208110198 (left) and A2208110298 (right).
{|
{|
|[[File:W220_exterior_mirror_gaskets_seals_A2208110198_A2208110298.jpg|thumb|none|Gaskets A2208110198 and A2208110298.]]
|[[File:W220_exterior_mirror_gaskets_seals_A2208110198_A2208110298.jpg|thumb|none|Gaskets A2208110198 and A2208110298.]]
Line 66: Line 97:
|}
|}


==== Glass ====
=== Glass ===
Original mirror glass is expensive high theft risk part (especially driver's side mirror for
Original mirror glass is expensive high theft risk part (especially driver's side mirror glass for
option code [[Option_codes#249_-_INSIDE_AND_OUTSIDE_MIRROR_AUTOMATIC_DIMMING|249 - INSIDE AND OUTSIDE MIRROR AUTOMATIC DIMMING]]).
option code [[Option_codes#249_-_INSIDE_AND_OUTSIDE_MIRROR_AUTOMATIC_DIMMING|249 - INSIDE AND OUTSIDE MIRROR AUTOMATIC DIMMING]]).


Aftermarket mirrors with heating are available in ebay for as cheap as 15 EUR.
Aftermarket mirror glasses with heating are available in ebay for as cheap as 15 EUR.


{|
{|
Line 80: Line 111:
|}
|}


=== DIY ===
Left / Right:
{|
* A2208100321 (100 EUR) / A2208100421
|{{#ev:youtube|https://www.youtube.com/watch?v=ObAZFkrLjC0|320|left|Remove mirror cover ([[facelift]]).|frame}}
* TYC 321-0066-1 (15 EUR) / TYC 321-0065-1 (15 EUR)
|}
* ALKAR 6471702 (16 EUR) / ALKAR 6472702 (16 EUR)
 
* BLIC 6102-02-1271790P (10 EUR) / BLIC 6102-02-1272791P (10 EUR)
== Pre-facelift ==
[[File:W220_exterior_mirror_prefacelift.jpg|thumb|none|Exterior mirror of pre-[[facelift]] vehicle.]]
 
=== DIY ===
 
* Remove the mirror cover by pressing in a small spring clip at the top.
* Release the mirror housing cover by also pressing in a spring clip near the outer edge.


TYC mirror has a slightly different color than the original (see below).
{|
{|
|{{#ev:youtube|https://www.youtube.com/watch?v=Nr_VOX7n-u8|320|left|Remove mirror cover (pre-[[facelift]]).|frame}}
|[[File:W220_mirror_glass_TYC_vs_original.jpg|thumb|none|TYC mirror vs original]]
|[[File:W220_mirror_glass_TYC_vs_original_back.jpg|thumb|none|TYC mirror vs original (back)|]]
|}
|}


== Driver-side exterior rearview mirror automatic dimming feature ==
ALKAR and BLIC mirrors are identical (BLIC sticker is put over the ALKAR mirror product box).
<!-- GF68.49-P-2100-04S Inside rearview mirror, task -->
ALKAR/BLIC mirror has '''heating connectors in the wrong place''' hence the glass is not suited unless heating wires are extended (see below).
The inside [[rearview mirror]] (A67) in combination with the overhead
control panel control module (N70) serves as master for dimming
the electrically adjustable and heated left outside mirror (M21/1)
(special equipment).
 
<!-- GF88.79-P-2003S, Automatic dimming feature for exterior rearview mirror on driver's side, function -->
<!-- 220.063 /065 with CODE (249b) Automatic dimming interior and exterior (driver-side) rearview mirrors -->
{|
{|
|[[File:W220_mirror_automatic_dimming_feature.png]]
|[[File:W220_mirror_glass_ALKAR_vs_original.jpg|thumb|none|ALKAR/BLIC mirror vs original]]
|
|[[File:W220_mirror_glass_ALKAR_vs_original_back.jpg|thumb|none|ALKAR/BLIC mirror vs original (back)|]]
* 1 - CAN-message: "Shift lever position"
* 2 - CAN-message: "Reverse gear engaged"
* A67 - Interior rearview mirror unit
* M21/1 - Left electrically adjustable and heated exterior rearview mirror
* M21/2 - Right electrically adjustable and heated exterior rearview mirror
* N15/5 - Electronic shift lever module control module
* N70 - Overhead control panel control module
* N73 - Electronic ignition/starter switch control module
|}
|}
Function prerequisites:
* Voltage not too low or too high
* C.15R or C.15 ON
The light reaching the surface of the mirror is reflected to a greater
or lesser extent depending on the magnitude of the control
voltage. The control voltage is regulated by the interior rearview
mirror unit (A67) (master) and the overhead control panel control module (N70).
Two discrete leads are connected to the left front door control module (N69/1)
for this purpose (vehicles with right-hand steering: right front door control module ((N69/2)).
Regulation is accomplished depending on the ambient light and
the light reaching the mirror. These two variables are measured by
the ambient light sensor (A67h2) in the interior rearview mirror
housing (rear) and the automatic dimming interior rearview
mirror sensor (A67h1) in the mirror glass in the interior rearview
mirror unit.
If one of the interior lights is switched on or the CAN message
"Reverse gear engaged" is received from the electronic ignition/
starter switch control module (N73), the exterior rearview mirror
as well as interior rearview mirror become brighter.


==Adjust left/right exterior mirror function==
==Adjust left/right exterior mirror function==
Line 183: Line 171:
parking space.
parking space.


==Fold in left/right exterior mirror function==
===Exterior rearview mirror adjustment switch===
<!-- GF88.79-P-2002S, MODELS 215, 220, Fold in left/right exterior mirror function, 6.4.98 -->
 
The left and right exterior mirror housings can be electrically folded in and out.
Via the switches in the switch train for exterior mirror adjustment with fold
in/out function (S50/1) in the front left [[door control module]] (N69/1)
(RHS vehicle: Front right [[door control module]] (N69/2) ),
the left/right exterior mirror housing can be moved to the garage position
(mirror housings folded in) or the driving position (mirror housings folded out).
The switch statuses of the switches for folding the exterior
mirror in (S50/1s4) and the switches for folding the exterior
mirror out (S50/1s5) are read in by the front left [[door control
module]] (N69/1) (RHS vehicle: Front right [[door control module]] (N69/2))
inserted and placed onto the CAN as a message for the door control module on the front passenger's side.
 
The front left [[door control module]] (N69/1) and the front right
[[door control module]] (N69/2) then actuate the motor for folding
the mirror in (M21/1m3) and the motor for folding the mirror in
(M21/2m3) in the left and right exterior mirror housings.
 
'''Up to 31.05.01'''
the fold in exterior mirror switch (S50/1s4) or the fold out
exterior mirror switch (S50/1s5) must be actuated until the mirror
housings are in the desired position.
 
'''As of 01.06.01'''
the fold in exterior mirror switch (S50/1s4) or the fold out
exterior mirror switch (S50/1s5) merely have to be touched, and
the mirror housings are automatically moved to the desired
position.
 
==Exterior rearview mirror adjustment switch==
<!-- GF88.79-P-3001-01S, Exterior rearview mirror adjustment switch, location, Model 215, Model 220 -->
<!-- GF88.79-P-3001-01S, Exterior rearview mirror adjustment switch, location, Model 215, Model 220 -->
The switches for adjusting the exterior rearview mirrors are located in a separate assembly in
The switches for adjusting the exterior rearview mirrors are located in a separate assembly in
Line 220: Line 177:
[[door control module]] (N69/1) (vehicles with right-hand steering : right front door control module (N69/2)).
[[door control module]] (N69/1) (vehicles with right-hand steering : right front door control module (N69/2)).


Left front door control module (N69/1) (left-hand steering)
Left front [[door control module]] (N69/1) (left-hand steering)
{|
|
{|
{|
|[[File:W220_Exterior_rearview_mirror_adjustment_switch_location_photo.jpg|300px]]
|[[File:W220_Exterior_rearview_mirror_adjustment_switch_location.png]]
|[[File:W220_Exterior_rearview_mirror_adjustment_switch_location.png]]
|}
|
|
* S50/1 - Exterior mirror adjustment switch with mirror fold-in/fold-out feature
* S50/1 - Exterior mirror adjustment switch with mirror fold-in/fold-out feature
Line 250: Line 211:
CAN bus as a message.
CAN bus as a message.


==Exterior rearview mirror adjustment motor==
[[File:W220_exterior_mirror_adjustment.png|thumb|none|Exterior mirror adjustment switch.]]
 
# Driver's side exterior rear view mirror button
# Passenger-side exterior rear view mirror button
# Adjustment button
 
===Exterior rearview mirror adjustment motor===
<!-- GF88.79-P-4100-01S, Exterior rearview mirror adjustment motor,location, Model 215, Model 220 -->
<!-- GF88.79-P-4100-01S, Exterior rearview mirror adjustment motor,location, Model 215, Model 220 -->
The motors for adjusting the mirror glass
The motors for adjusting the mirror glass
Line 291: Line 258:
Actuation is accomplished by the left front door control module (N69/1)/right front door control module (N69/2).
Actuation is accomplished by the left front door control module (N69/1)/right front door control module (N69/2).


==Exterior rearview mirror position measurement function==
===Exterior rearview mirror position measurement function===
<!-- GF88.79-P-4000S,  
<!-- GF88.79-P-4000S,  
MODEL 220.063 with CODE (275a) Memory package (driver's seat, steering column, mirrors)
MODEL 220.063 with CODE (275a) Memory package (driver's seat, steering column, mirrors)
Line 300: Line 267:
(M21/1m1)/(M21/2m1) and horizontal mirror adjustment motors
(M21/1m1)/(M21/2m1) and horizontal mirror adjustment motors
(in/out) (M21/1m2)/(M21/2m2) in the left and right exterior mirrors.
(in/out) (M21/1m2)/(M21/2m2) in the left and right exterior mirrors.
==Fold in left/right exterior mirror function==
<!-- GF88.79-P-2002S, MODELS 215, 220, Fold in left/right exterior mirror function, 6.4.98 -->
The left and right exterior mirror housings can be electrically folded in and out.
Via the switches in the switch train for exterior mirror adjustment with fold
in/out function (S50/1) in the front left [[door control module]] (N69/1)
(RHS vehicle: Front right [[door control module]] (N69/2) ),
the left/right exterior mirror housing can be moved to the garage position
(mirror housings folded in) or the driving position (mirror housings folded out).
The switch statuses of the switches for folding the exterior
mirror in (S50/1s4) and the switches for folding the exterior
mirror out (S50/1s5) are read in by the front left [[door control
module]] (N69/1) (RHS vehicle: Front right [[door control module]] (N69/2))
inserted and placed onto the CAN as a message for the door control module on the front passenger's side.
The front left [[door control module]] (N69/1) and the front right
[[door control module]] (N69/2) then actuate the motor for folding
the mirror in (M21/1m3) and the motor for folding the mirror in
(M21/2m3) in the left and right exterior mirror housings.
'''Up to 31.05.01'''
the fold in exterior mirror switch (S50/1s4) or the fold out
exterior mirror switch (S50/1s5) must be actuated until the mirror
housings are in the desired position.
'''As of 01.06.01'''
the fold in exterior mirror switch (S50/1s4) or the fold out
exterior mirror switch (S50/1s5) merely have to be touched, and
the mirror housings are automatically moved to the desired
position.


==Heating left/right exterior rearview mirrors function==
==Heating left/right exterior rearview mirrors function==
Line 320: Line 318:
* N10/7 - Right front SAM control module
* N10/7 - Right front SAM control module
* N22 - A/C pushbutton control module
* N22 - A/C pushbutton control module
* N69/1 - Left front door control module
* N69/1 - Left front [[door control module]]
* N69/2 - Right front door control module
* N69/2 - Right front [[door control module]]
|}
|}


Line 338: Line 336:
and the dew point (CAN message from automatic A/C pushbutton control module (N22)).
and the dew point (CAN message from automatic A/C pushbutton control module (N22)).


== Automatic dimming feature for exterior rearview mirror on driver's side function ==
For vehicles with option code [[Option_codes#249_-_INSIDE_AND_OUTSIDE_MIRROR_AUTOMATIC_DIMMING|249 - INSIDE AND OUTSIDE MIRROR AUTOMATIC DIMMING]]
the exterior rearview mirror on driver's side (M21/1) can be dimmed electro-chromatically.


== Memory function ==
<!-- GF68.49-P-2100-04S Inside rearview mirror, task -->
<!-- GF91.29-P-0001S
The inside [[rearview mirror]] (A67) in combination with the overhead
Memory switch function, MODELS 215, 220 (except , 220.063),
control panel control module (N70) serves as master for dimming
MODEL 220.063 with CODE (275a) Memory package (driver's seat, steering column, mirrors)
the electrically adjustable and heated left outside mirror (M21/1).
16.4.98
-->


The settings for the left and right exterior mirrors, the interior
<!-- GF88.79-P-2003S, Automatic dimming feature for exterior rearview mirror on driver's side, function -->
rearview mirror and the steering column are also stored together
<!-- 220.063 /065 with CODE (249b) Automatic dimming interior and exterior (driver-side) rearview mirrors -->
with the driver's seat setting.
 
'''Up to 31.05.01'''
* Driver's side: For each transmitter key, ''two'' complete seat settings can be stored and called up again on the driver's side. A total of eight memory areas are available.
* Front passenger's side: On the front passenger's side, ''two'' complete seat settings can be stored and called up again.
 
'''As of 01.06.01'''
* Driver's side: For each transmitter key, ''three'' complete seat settings can now be stored and called up again on the driver's side. A total of twelve memory areas are available.
* Front passenger's side: On the front passenger's side, three complete seat settings can now be stored and called up again.
* Rear (only model 220 with electrically adjustable individual rear seats): Three complete seat settings can be stored and called up again.
 
=== Calling up stored positions function ===
<!-- GF91.29-P-2011S
Calling up stored positions, function
MODELS 215, 220 (except , 220.063)
MODEL 220.063 with CODE (275a) Memory package (driver's seat, steering column, mirrors)
29.4.98
-->
 
Calling up stored positions (driver, front passenger)
{|
{|
|[[File:W220_Calling_up_stored_positions_function.png]]
|[[File:W220_mirror_automatic_dimming_feature.png]]
|
|
* 1 - CAN message: "Current storage block" (depends on ignition/starter key)
* 1 - CAN-message: "Shift lever position"
* 2 - Actuation of the respective motors
* 2 - CAN-message: "Reverse gear engaged"
* 3 - Feedback of the current position
* A67 - Interior rearview mirror unit
* A67 - Inside mirror unit
* M21/1 - Left electrically adjustable and heated exterior rearview mirror
* K40/6 - Left front fuse and relay module
* M21/2 - Right electrically adjustable and heated exterior rearview mirror
* K40/6kD - Relay 1 Jacket tube longitudinal adjustment
* N15/5 - Electronic shift lever module control module
* K40/6kE - Relay 2 Jacket tube longitudinal adjustment
* K40/6kI - Relay 1 Jacket tube height adjustment
* K40/6kI - Relay 1 Jacket tube height adjustment
* K40/6kJ - Relay 2 Jacket tube height adjustment
* M20 - ESC [ELV] motor
* M21/1 - Left electrically adjustable and heated exterior mirror
* M21/2 - Right electrically adjustable and heated exterior mirror
* M27 - Left front seat adjustment motor group with memory
* M28 - Right front seat adjustment motor group with memory
* N10/6 - Left front SAM control module
* N10/6 - Left front SAM control module
* N32/1 - Left front seat adjustment control module with memory
* N32/2 - Right front seat adjustment control module with memory
* N69/1 - Left front [[door control module]]
* N69/2 - Right front [[door control module]]
* N70 - Overhead control panel control module
* N70 - Overhead control panel control module
* N73 - EIS control module
* N73 - Electronic ignition/starter switch control module
* S50/1 - Outside mirror switch with mirror fold-in/fold-out facility
|}
|}
Function requirements:
* No overvoltage or undervoltage
* Term.15R or 15 ON
* Driver's door/front passenger's door open
* No button for manual seat adjustment, mirror adjustment or steering column adjustment pressed
* Normalization carried out properly
'''Calling up memory and Ergo positions (driver) up to 31.5.01.'''
When calling up the memory function or Ergo function by pressing
the memory 1 switch (N69/1s6), memory 2 switch (N69/1s7) or
ERGONOMICS switch (N69/1s8) in the left [[door control module]]
(N69/1) the positions stored in the relevant control modules are actuated:
* Inside rearview mirror
* Front passenger's exterior mirror
* Steering column
* Driver seat
The left front door control module (N69/1) recognizes that a switch
is pressed and sends the following message via the CAN:
"Left front memory - Assume position 1/2/Ergo".
Memory 3 (N69/1s15), in the left front door control module (N69/1).
This message is received from the left front SAM control module (N10/6),
from the overhead control panel control module (N70),
from the right front door control module (N69/2) and from the left
front seat adjustment control module with memory (N32/1).
Consequently these control modules, and also the left front [[door
control module]] (N69/1), actuate the respective motors (see Figure),
when the button is pressed further, until it is recognized via the
local position recognitions that the stored positions are reached.
'''As of 1.6.01 the Ergo position is not used anymore, it is
replaced by a further memory button.'''
This memory location is called up by pressing the switch for
memory 3 (N69/1s9) in the left front door control module (N69/1).
'''Calling up memory/Ergo positions (front passenger) up to 31.5.01.'''
When the memory feature is called up by pressing the memory 1 switch (N69/2s6),
memory 2 switch (N69/2s7) ERGONOMY switch (N69/2s9) in the right front [[door control module]] (N69/2),
the positions of the front passenger's seat stored in the right front seat
adjustment control module with memory (N32/2) are approached.
The right front door control module (N69/2) recognizes that a
switch is pressed and places the following message on the CAN:
"Right front memory - Assume position 1/2/Ergo". This message is
received from right front seat adjustment control module with
memory (N32/2) which then, when the button is pressed further,
actuates the motors of the right front seat adjustment motor group with memory (M28)
until it is recognized via local position recognitions that the stored positions are reached.
'''As of 1.6.01 the Ergo position is not used anymore, it is
replaced by a further memory button.'''
This memory location is called up by pressing the memory 3 switch
(N69/2s15) in the right front control module (N69/2).
'''Calling up memory positions (rear).'''
(On model 220 with electrically adjustable individual rear seats with
memory)
Left rear side:
When the memory feature is called up by pressing the memory 1
switch (N69/3s3) or memory 2 switch (N69/4s4) or memory 3
switch(N69/3s5) in the driver's side [[door control module]] (N69/3)
the positions of the left rear seat stored in the rear seats control
module (N25/6) are approached.
Right rear side:
When the memory feature is called up by pressing the memory 1
switch (N69/4s3) or memory 2 switch (N69/3s4) or memory 3
switch (N69/4s5) in the right rear [[door control module]] (N69/4)
the respective door control module recognizes that a switch is
pressed and places the following message on the CAN "Left and right rear memory - Assume position 1/2/3".
This message is received by the rear seats control module (N25/6)
which then, if the button is pressed further, actuates the respective
adjustment motors until it is recognized via local position
recognitions that the stored positions are reached.
===Storing memory positions function===
<!-- GF91.29-P-2012S
Storing memory positions, function
MODEL 215.###, 220.### (except , 220.063) 1#
MODEL 220.063 1# with CODE (275a) Memory package (driver's seat, steering column, mirrors)
29.4.98
-->


Function prerequisites:
Function prerequisites:
* Circuit 15R or 15 ON
* Voltage not too low or too high
* C.15R or C.15 ON


Together with the storage of the driver's seat position in addition
The light reaching the surface of the mirror is reflected to a greater
the inside rearview mirror, the outside mirror as well as the
or lesser extent depending on the magnitude of the control
steering column position are stored in the relevant control module key-related.
voltage. The control voltage is regulated by the interior rearview
mirror unit (A67) (master) and the overhead control panel control module (N70).
Two discrete leads are connected to the left front door control module (N69/1)
for this purpose (vehicles with right-hand steering: right front door control module ((N69/2)).


'''Memory locations up to 31.5.01.'''
Regulation is accomplished depending on the ambient light and
The positions of the driver's seat and front passenger's seat
the light reaching the mirror. These two variables are measured by
including the adjustments of the multicontour backrest (special
the ambient light sensor (A67h2) in the interior rearview mirror
equipment) can be stored on ''two'' memory locations.
housing (rear) and the automatic dimming interior rearview
mirror sensor (A67h1) in the mirror glass in the interior rearview
mirror unit.


'''Memory locations as of 1.6.01'''
If one of the interior lights is switched on or the CAN message
The positions of the driver's seat and front passenger's seat
"Reverse gear engaged" is received from the electronic ignition/
including the adjustments of the multicontour backrest (special equipment)
starter switch control module (N73), the exterior rearview mirror
can be stored on ''three'' memory locations.
as well as interior rearview mirror become brighter.


The positions are stored in the following control modules:
==DIY==
===Remove/install complete outside mirror===
<!-- AR88.70-P-9000M, MODEL 220, Remove/install complete outside mirror, 17.4.98 -->


Driver side:
Shown on model 220 as of VIN 316717 ([[facelift]]):
* Seat position: Left front seat adjustment control module with memory (N32/1)
{|
* Inside rearview mirror position: Overhead control panel control module (N70)
|[[File:W220_Remove_install_complete_outside_mirror_1.jpg]]
* Left outside mirror: Left front [[door control module]] (N69/1)
|
* Right outside mirror: Right front [[door control module]] (N69/2)
* 7 - Screw
* Steering column position: Left front SAM control module (N10/6)
* 8 - Bolts
|}


Passenger side:
Shown on model 220 up to VIN 316716 (pre-[[facelift]]):
* Seat position: Right front seat adjustment control module with memory (N32/2)
{|
|
{|
|[[File:W220_Remove_install_complete_outside_mirror_2.png]]
|[[File:W220_Remove_install_complete_outside_mirror_3.jpg]]
|}
|
* 1 - Trim strip
* 2 - Door control unit cover
* 4 - Door lining
* 5 - Mounting wedge
* N69/1 - Left front door control unit
* N69/2 - Right front door control unit
|}


Rear seats (model 220 with electrically adjustable individual rear seats only):
Shown on model 220 As of VIN 316717 ([[facelift]]):
* Seat position: Rear seats control module (N25/6)
{|
|[[File:W220_Remove_install_complete_outside_mirror_4.jpg]]
|
* 6 - Outside mirrors
* 9 - Connectors
* 10 - Sheet metal flap
* 11 - Cord
|}


'''Up to 31.5.01 storing driver's seat position with associated mirror and steering column positions.'''
# Remove paneling on outside mirror
The currently adjusted positions are stored by pressing the
# Fold outside mirror (6) manually toward front and unscrew bolt (7)
memory switch (N69/1s9) in the left front [[door control module]]
# Fold outside mirror (6) electronically toward rear and unscrew bolt (8)
(N69/1) and then within 3 seconds, the memory 1 switch (N69/1s6)
# Press door control unit cover (2) off of door lining (4) with mounting wedge (5). The mount was modified with model refinement as of VIN 316717 ([[facelift]]).
or memory 2 switch (N69/1s7).
# Disconnect connector (9) from left front door control unit (N69/1) or right front door control unit (N69/2). Only outside mirrors with EC dimming (2 connectors) are delivered as replacement parts. On vehicles without EC dimming fasten connector (9) not required to wiring harness (tie strap or insulating tape).
# Bend sheet metal cap (10) toward inside to achieve more space for lines and connectors (9).
# Fasten cord (11) to connectors (9) with friction tape.
# Pull outside mirror (6) out of door with electrical lines without damaging them.
# Remove cord (11) from connectors
# Remove outside mirror (6)
# Install in the reverse order


If at the same time no other switch in this switch group is pressed,
===Remove/install gasket on outside mirror===
the left front [[door control module]] (N69/1) sends a message to the
<!-- AR88.70-P-9090M, MODEL 215, 220, Remove/install gasket on outside mirror, 19.11.03 -->
CAN. The respective control modules receive this request for
{|
position storage and check whether valid values are supplied via
|[[File:W220_Remove_install_gasket_on_outside_mirror.jpg]]
local position measurements.
|
If this is the case, the current positions are stored in the non-volatile memory.
* 1 - Old gasket
* 2 - New gasket
* 3 - Vapor barrier
* 4 - Remaining piece
* M21/1 - Left electrically adjustable and heated outside mirror
* M21/2 - Right electrically adjustable and heated outside mirror
* A - Recess
* B - Separation line
|}


'''Up to 31.5.01 storing front passenger's seat position.'''
# Completely remove left electrically adjustable and heated outside mirror (M21/1) or right electrically adjustable and heated outside mirror (M21/2)
The currently adjusted front passenger's seat position is stored in
# Remove vapor barrier (3). Note correct installation positions.
the same way as the driver's seat position.
# Lay new gasket (2) over old gasket (1) of left electrically adjustable and heated outside mirror (M21/1) or right electrically adjustable and heated outside mirror (M21/2).
It is triggered by pressing the memory switch (N69/2s9) in the right
# Mark cutout (A) for new gasket (2) on old gasket (1).
front door control module (N69/2) and then, within 3 seconds,
# Remove new gasket (2)
memory 1 switch (N69/2s6) or memory 2 switch (N69/2s7)
# Increase cutout transferred to old gasket (1) by dimension min. 5 mm. and mark cutting line (B).
# Cut off gasket (1) off along cutting line (B) and remove outer part from old gasket (1).
# Cut elevations off of remaining piece (4) remaining on left electrically adjustable and heated outside mirror (M21/1) or right electrically adjustable and heated outside mirror (M21/2) on old gasket (1). The remaining piece (4) should not have elevations, otherwise the remaining piece (4) and new gasket (2) will not seal properly with one another.
# Install new gasket (2) on left electrically adjustable and heated outside mirror (M21/1) or right electrically adjustable and heated outside mirror (M21/2).
# Insert vapor barrier (3)
# Completely install left electrically adjustable and heated outside mirror (M21/1) or right electrically adjustable and heated outside mirror (M21/2).


'''Storing left rear seat position'''
Note: You need to keep the old gasket, a part of it is used to seal the hole. The new gasket needs the piece from the old one around the wires. And when you do cut it from the old one make sure you cut it larger than the hole in the new gasket, so when it is installed it seals over the whole area.
(model 220 with electrically adjustable individual rear seats only).
The currently adjusted rear seat position is stored by pressing the
memory switch (N69/3s10) in the left rear door control module
(N69/3) and then memory switch 1 within 3 seconds (N69/3s3) or
memory 2 switch (N69/3s4) or memory 3 switch (N69/3s5).


The storage process for the right rear side is analog to the left
===Remove/install outside rearview mirror cover===
rear side. In the process the memory switch (N69/4s10) in the right
<!-- AR88.70-P-9040M, MODEL 220, 215, Remove/install outside rearview mirror cover, 28.5.98 -->
rear door control module (N69/4) and memory 1 switch (N69/4s3)
or memory 2 switch (N69/4s4) or memory 3 switch (N69/4s5) are
used.


'''As of 1.6.01 revised storage process.'''
Shown on model 220 as of VIN 316717 ([[facelift]]):
There are two ways of storing the respective positions:
{|
|[[File:W220_Remove_install_outside_rearview_mirror_cover_2.jpg]]
|
* 1 - Paneling
* 4 - Outside mirrors
* 7 - Upper catch spring
|}


For the driver's side:
Shown on model 220 up to VIN 316716 (pre-[[facelift]]):
a) If the memory switch (N69/1s9) is kept pressed and
{|
additionally one of the memory 1 switches (N69/1s6),
|[[File:W220_Remove_install_outside_rearview_mirror_cover_1.jpg]]
memory 2 switches (N69/1s7); memory 3 switches
|
(N69/1s15) is pressed for t>=40 ms, the storage process is
* 1 - Paneling
thereby concluded.
* 2 - Bottom catch spring
* 3 - Turn signals
* 4 - Outside mirrors
* 5 - Turn signal connector on outside rearview mirror
* 6 - Turn signal connector in outside rearview mirror covering
|}


b) Press the memory switch (N69/1s9) for t=>40 ms and then
# Remove mirror glass
release again, then within t<3 seconds, press the desired
# Facelift: Release top catch spring (7). Pre-facelift: release bottom catch spring (2).
memory location via memory 1 switch (N69/1s6); memory 2
# Remove paneling (1)
switch (N69/1s7), memory 3 switch (N69/1s15) for t>=40 ms
# Pre-facelift: move bottom catch spring (2) to initial position.
so that the storage process is concluded.
# Pre-facelift: check position of connector for turn signal on outside rearview mirror (5) and turn signal connectors in outside rearview mirror covering (6). If the connectors are not in the correct position, damage can occur when the covering (1) is installed.
# Push on paneling (1). Ensure that the covering (1) is arrested in the end position by the top catch spring (7) for facelift or bottom catch spring (2) for pre-facelift.
# Pre-facelift: Ensure that the turn signal connector is connected properly to the outside rearview mirror (5).
# Check for proper function


In order to avoid faults during storage it is necessary that the
===Removing and installing auxiliary turn signal lamp===
voltage supply is applied to the control module for a further
<!-- AR82.25-P-4726M, MODEL 215, 220, Removing and installing auxiliary turn signal lamp, 15.6.98 -->
five seconds at least.


If during the storage process no other switch from the switch
Illustrated on [[facelift]] vehicle:
group is pressed, the values are sent from the respective door
{|
control module to the relevant control modules via the CAN.
|[[File:W220_Removing_and_installing_auxiliary_turn_signal_lamp_facelift.jpg|500px]]
These control modules check whether the local position
|
measurement supplies valid values. If this is the case the current
* E6/5 - Left exterior mirror turn signal lamp
positions are stored in the non-volatile memory.
* E6/6 - Right exterior mirror turn signal lamp
* M21/1e1 - Left outside mirror ambient lamp
* M21/2e1 - Right outside mirror ambient lamp
|}


The storage process for the front passenger's side is analog to
Illustrated on pre-[[facelift]] vehicle:
the driver's side. In the process the memory 1 switch (N69/2s6),
{|
memory 2 switch (N69/2s7), memory 3 switch (N69/2s15) and
|[[File:W220_Removing_and_installing_auxiliary_turn_signal_lamp_prefacelift.jpg|700px]]
memory switch (N69/2s9) are used.
|
* 1 - Screws
* 2 - Cover
* 3 - Guides
* E6/5 - Left exterior mirror turn signal lamp
* E6/6 - Right exterior mirror turn signal lamp
|}


===Code-related storage block selection===
# Remove covering on exterior rearview mirror
<!-- GF91.29-P-3004S, Code-related storage block selection
# Pre-facelift: unscrew screws (1).
MODELS 215, 220 (except , 220.063)
# Pre-facelift: remove cover (2) with guides (3) from covering. Installation: Ensure that guides (3) are correctly seated in cover.
MODEL 220.063 with CODE (275a) Memory package (driver's seat, steering column, mirrors)
# Facelift: pull out outside mirror ambient lamp bulb.
25.5.98
# Remove left/right exterior mirror turn signal lamp (E6/5, E6/6) from covering
-->
# Install in opposite order
# Check for proper function


The driver's seat position (memory feature) is stored in the left
===Remove/install mirror glass===
front seat adjustment control module with memory (N32/1) (vehicle
<!-- AR88.70-P-9020M, MODEL 220, 215, Remove/install mirror glass, 17.4.98 -->
with right hand steering (N32/2)) on a key-related basis.


The electronic ignition switch control module (N73) recognizes the
Shown on model 220 as of VIN 316717 ([[facelift]]):
inserted transmitter key (A8/1) and notifies the left front seat
{|
adjustment control module with memory (N32/1) (vehicles with right
|[[File:W220_Remove_install_mirror_glass_2.jpg]]
hand steering: right front seat adjustment control module with
|
memory (N32/2)) which of the four memory blocks are to be
* 1 - Retaining spring
activated via the CAN.
* 2 - Connector
One memory block consists of two memory areas. One complete
* 3 - Mirror lens
seat position can be stored for each memory area. The memory
area is selected via the memory 1 switch (N69/1s6)/memory 2
switch (N69/1s7)
in the left front door control module (N69/1) (vehicle with right hand
steering: Corresponding switches in the right front door control
module (N69/2)).
 
{| class="wikitable"
! Key track
! 1
! 2
! 5/6
! 3/4/7/8
|-
|Memory block number (CAN message from electronic ignition switch)
|1
|2
|3
|4
|-
|-
|Position key on left front [[door control module]] (N69/1)
|1 2
|1 2
|1 2
|1 2
|-
|Memory area in the left front seat adjustment control module with memory (N32/1) (LHS)
|1 2
|3 4
|5 6
|7 8
|}
|}


===Parking position for exterior rearview mirror on passenger side function===
Shown on model 220 up to VIN 316716 (pre-[[facelift]]):
<!-- GF88.79-P-2006S
Parking position for exterior rearview mirror on passenger side, function
MODEL 215, 220 (except, 220.063)
MODEL 220.063 with CODE (275a) Memory package (driver's seat, steering column, mirrors)
6.4.98
-->
 
Moving the exterior rearview mirror on the passenger side to the parking position when reverse gear is engaged
(illustrated on vehicle with left-hand steering)
{|
{|
|[[File:W220_Parking_position_for_exterior_rearview_mirror_on_passenger_side_function.png]]
|[[File:W220_Remove_install_mirror_glass_1.jpg]]
|
|
* 1 - CAN-message: "Shift lever position"
* 1 - Mirror lens
* 2 - CAN-message: "Reverse gear engaged"
* 2 - Retaining spring
* 3 - CAN-message: "Vehicle speed signal"
* 3 - Connector
* A1 - Instrument cluster
* 4 - Support spring
* M21/2 - Right electrically adjustable and heated exterior rearview mirror
* 5 - Retaining lugs
* N15/5 - Electronic shift lever module control module
* 6 - Clamp
* N69/1 - Left front door control module
* N69/2 - Right front door control module
* N73 - Electronic ignition/starter switch control module
|}
|}


Function prerequisites
# Pre-facelift: remove covering on outside rearview mirror.
* Voltage not too low or too high
# Unhook retaining spring (2).
* C.15 ON
# Facelift: Remove mirror glass (1) from drive.
* Reverse gear engaged
# Pre-facelift: Press clip (6) in direction of arrow and remove mirror glass (1) from drive. Do not break off clip (6). Installation: First hook in mirror glass (1) at bottom with retaining lugs (5) into retaining pockets (arrows) on drive. Observe support springs (4).
* Exterior mirror changeover left/right switch (S50/1s3) in passenger-side rearview mirror position
# Disconnect coupling (3)
* Position measurement supplying valid values
# Install in the reverse order


'''Purpose of parking position.'''
===Removing and installing mirror adjustment drive motor===
After the exterior rearview mirror on the passenger side has
<!-- AR88.70-P-9060M, MODEL 220, 215, Removing and installing mirror adjustment drive motor, 21.4.98 -->
moved to the parking position the driver can observe the distance
between the associated rear wheel and edge of the curb in the
mirror when backing up to park the car.


'''Function.'''
{|
The right front [[door control module]] (N69/2) (vehicles with right-hand steering: left front door control module (N69/1) )
|[[File:W220_Removing_and_installing_mirror_adjustment_drive_motor.jpg]]
receives the CAN message "Reverse gear engaged",
|
causing the exterior rearview mirror on the passenger side to be moved to the parking position stored for ignition/starter key in use.
* 1 - Mirror adjustment motor
* 2 - Screws
* 3 - Connector
|}


One parking position can be stored in the right front [[door control module]] (N69/2)
# Remove cover on outside rearview mirror
(vehicles with right-hand steering: left front door control module (N69/1))  
# Remove mirror glass
per ignition/starter key.
# Unscrew screws (2)
# Remove mirror adjustment motor (1)
# Disconnect connector (3)
# Install in opposite order


'''Termination of function.'''
===Resources===
The exterior rearview mirror is automatically moved back to the original position when:
{|
* The transmission is shifted to a forward gear, after expiration of a time of approx. 10s
|{{#ev:youtube|https://www.youtube.com/watch?v=ObAZFkrLjC0|320|left|Remove mirror ([[facelift]]).|frame}}
* or the vehicle speed increases to about 10 km/h or
|{{#ev:youtube|https://www.youtube.com/watch?v=Nr_VOX7n-u8|320|left|Remove mirror cover (pre-[[facelift]]).|frame}}
* the exterior mirror changeover left/right switch (S50/1s3) in the exterior mirror adjustment switch with mirror fold-in/out feature (S50/1) on the left front [[door control module]] (N69/1) (vehicles with right-hand steering: right front [[door control module]] (N69/2)) has been actuated.
|}
 
The mirror is also moved back to the original position even when it was adjusted manually in the parking position with the adjustment switch.
 
===Storing parking position for exterior rearview mirror function===
<!-- GF88.79-P-3004S
Storing parking position for exterior rearview mirror, function
MODEL 215, 220 (except , 220.063)
MODEL 220.063 with CODE (275a) Memory package (driver's seat, steering column, mirrors)
6.4.98
-->
 
Function prerequisites:
* C. 15R or c.15 ON
* Vehicle speed v=0 km/h
 
The parking position for the exterior mirror on the passenger side
can be stored in relation to the key with the left front door
control module (N69/1) (vehicles with right-hand steering: right
front door control module (N69/2)).
 
For this purpose it is first necessary to adjust the rearview mirror to the desired parking
position manually with the mirror adjustment switches in the
exterior mirror adjustment switch group with mirror fold-in/out feature (S50/1).
 
Then press the memory switch (N69/1s9) (vehicles with right-hand steering: (N69/2s9)),
and within 3 seconds the bottom half of the rocker switch of the exterior mirror adjustment up/down switch (S50/1s1).
When this combination of buttons is pressed the left front door control module (N69/1)
transmits the CAN message "Store parking position" to the right front [[door control module]] (N69/2)
(vehicles with right-hand steering: vice versa).
The momentary exterior rearview mirror position is then stored as the parking position.

Latest revision as of 23:40, 1 March 2024

Description

Facelift vehicles compared to pre-facelift vehicles have differences exterior mirror appearance and mechanism.

Exterior mirror of facelift vehicle.
Exterior mirror of pre-facelift vehicle.

Parts (facelift)

Left outside rearview mirror (from EPC).
Right outside rearview mirror (from EPC).

Outside rearview mirror

Part number A2208100576 (left) and A2208100876 (right). The part comes without glass and cover as shown in the picture below. The part is attached to front door using 3 A0029843729 (M4X22) bolts.

Rearview mirror (A2208100876).
Holes in the door.
Rearview mirror cover removed

Mirror cover

Part number for mirror cover is A2208100964 (left) and A2208101064 (right). The part comes without turn signal light module.

A2208100964 (front).
A2208100964 (back).
A2208100964 (vanity light opening).

Turn signal light

Turn signal light (blinker lamp) has part numbers:

Left:

  • A2208200521 - EUR 50
  • ULO 3105001 (OEM) - EUR 42

Right:

  • A2208200621 - EUR 50
  • ULO 3105002 (OEM) - EUR 42

On eBay there are cheap (~EUR 20) Chinese blinkers without vanity light wiring.

For the vanity light bulb there is LED upgrade available.

A2208200621 (front).
A2208200621 (back).
A2208200521 with cover removed.

Due to aging the plastic clips holding the LED cover become fragile and break off. This lets the moisture to enter the LED casing. If not fixed the LED will burn out and can even cause door control module damage. The moisture can be dried out using a heat gun and the broken clip can be fixed using a paper clip (see below).

Moisture in casing.
Cover with broken clip.
Broken clip fixed with paper clip.
Lamp installed in mirror cover.

Adjustment motor

Electronic adjustment motor A2038202242 is used on both sides.

A2038202242 (front).
A2038202242 (back).
A2038202242 (connector pins).
A2038202242 opened (outside).
A2038202242 opened (inside).
Error Code Generated By Description
B1208 DCM-FL - Door control module front left The signal from component M21/1r3 (Mirror in/out adjustment potentiometer) is faulty.

Gasket

Mirror gasket (seal) part number is A2208110198 (left) and A2208110298 (right).

Gaskets A2208110198 and A2208110298.
Worn gasket.

Glass

Original mirror glass is expensive high theft risk part (especially driver's side mirror glass for option code 249 - INSIDE AND OUTSIDE MIRROR AUTOMATIC DIMMING).

Aftermarket mirror glasses with heating are available in ebay for as cheap as 15 EUR.

A2208101321 with dimming for LHD vehicles.
A2208101821 (front).
A2208101821 (back).

Left / Right:

  • A2208100321 (100 EUR) / A2208100421
  • TYC 321-0066-1 (15 EUR) / TYC 321-0065-1 (15 EUR)
  • ALKAR 6471702 (16 EUR) / ALKAR 6472702 (16 EUR)
  • BLIC 6102-02-1271790P (10 EUR) / BLIC 6102-02-1272791P (10 EUR)

TYC mirror has a slightly different color than the original (see below).

TYC mirror vs original

ALKAR and BLIC mirrors are identical (BLIC sticker is put over the ALKAR mirror product box). ALKAR/BLIC mirror has heating connectors in the wrong place hence the glass is not suited unless heating wires are extended (see below).

ALKAR/BLIC mirror vs original

Adjust left/right exterior mirror function

(Shown on LHS vehicle)

  • 1 - CAN message: "Left exterior mirror to left/right/up/down"
  • M21/1 - Left exterior mirror, electrically adjustable and heated
  • M21/2 - Right exterior mirror, electrically adjustable and heated
  • N69/1 - Door control module front left
  • N69/2 - Door control module front right
  • S50/1 - Switch for exterior mirror adjustment with fold in/out function

Function requirements:

  • no overvoltage/undervoltage
  • Term.15R or 15 ON

The left and right exterior mirrors can be electrically adjusted via the switches in the switch train for exterior mirror adjustment with fold in/out function (S50/1) in the front left door control module (N69/1) (RHS vehicle: Front right door control module (N69/2)). The following settings are possible:

  • Horizontal mirror glass adjustment
  • Vertical mirror glass adjustment
  • Mirror housing folding-in (garage position) and folding-out (driving position)

The adjustments are carried out by the motors in the left electrically adjustable and heated exterior mirror (M21/1) and the right electrically adjustable and heated exterior mirror (M21/2). The motors are actuated via the front left door control module (N69/1) and the front right door control module (N69/2).

The memory function (special equipment) can be used to call up stored mirror settings. Setting the parking position of the exterior mirror on the front passenger's side enables the driver to check the distance of the relevant rear wheel from the edge of the curb when reversing into a parking space.

Exterior rearview mirror adjustment switch

The switches for adjusting the exterior rearview mirrors are located in a separate assembly in the exterior mirror adjustment switch with mirror fold-in/out (S50/1) on the left front door control module (N69/1) (vehicles with right-hand steering : right front door control module (N69/2)).

Left front door control module (N69/1) (left-hand steering)

  • S50/1 - Exterior mirror adjustment switch with mirror fold-in/fold-out feature
  • S50/1s1 - Exterior mirror adjustment up/down switch
  • S50/1s2 - Exterior mirror adjustment left/right switch
  • S50/1s3 - Exterior mirror changeover switch to left mirror
  • S50/1s4 - Exterior mirror fold-in switch
  • S50/1s5 - Exterior mirror fold-out switch
  • S50/1s6 - Exterior mirror changeover switch to right mirror

The left and right exterior rearview mirror glass can be adjusted in the vertical and horizontal directions with the exterior mirror up/down adjustment switch (S50/1s1) and exterior mirror in/out adjustment switch (S50/1s2). The switch can be set to the exterior rearview mirror to be adjusted with the

All switches for adjusting the exterior rearview mirrors are located in the exterior rearview mirror switch group with fold-in/out feature (S50/1). This switch group is connected to the door control module on the driver's side by a discrete wiring harness.

The switching status of the switches for adjustment of the exterior rearview mirrors is read in by the door control module on the driver's side evaluated and transferred to the CAN bus as a message.

Exterior mirror adjustment switch.
  1. Driver's side exterior rear view mirror button
  2. Passenger-side exterior rear view mirror button
  3. Adjustment button

Exterior rearview mirror adjustment motor

The motors for adjusting the mirror glass and housing are located in the left electrically adjustable and heated exterior rearview mirror (M21/1)/right electrically adjustable and heated exterior rearview mirror (M21/2).

  • M21/1 - Left electrically adjustable and heated exterior rearview mirror
  • M21/1m1 - Vertical mirror adjustment motor (up/down)
  • M21/1m2 - Horizontal mirror adjustment motor (in/out)
  • M21/1m3 - Mirror fold-in motor
  • M21/2 - Right electrically adjustable and heated exterior rearview mirror
  • M21/2m1 - Vertical mirror adjustment motor (up/down)
  • M21/2m2 - Horizontal mirror adjustment motor (in/out)
  • M21/2m3 - Mirror fold-in motor

The left exterior rearview mirror glass can be adjusted vertically and horizontally with the vertical mirror adjustment motor (up/down) (M21/1m1) and horizontal mirror adjustment motor (in/out) (M21/1m2) in the left electrically adjustable and heated exterior rearview mirror (M21/1). The right exterior rearview mirror glass can be adjusted vertically and horizontally with the vertical mirror adjustment motor (up/down) (M21/2m1) and horizontal mirror adjustment motor (in/out) (M21/2m2) in the right electrically adjustable and heated exterior rearview mirror (M21/2). The housing of the left/right exterior rearview mirror can be folded in (garage position) and out (driving position) with the mirror fold-in motors (M21/1m3)/(M21/2m3).

The motors are DC motors. Two potentiometers each are located on the motor shafts (M21/1m1)/(M21/2m1) and (M21/1m2)/(M21/2m2) for position recognition. The motors for outside rearview mirror (with fold-in/out feature) (M21/1m3)/(M21/2m3) are not equipped with a position recognition feature.

The motors turn to the left or right depending on the polarity of the actuating voltage. Actuation is accomplished by the left front door control module (N69/1)/right front door control module (N69/2).

Exterior rearview mirror position measurement function

A potentiometer for measuring the position is located on each of the shafts for the vertical mirror adjustment motors (up/down) (M21/1m1)/(M21/2m1) and horizontal mirror adjustment motors (in/out) (M21/1m2)/(M21/2m2) in the left and right exterior mirrors.

Fold in left/right exterior mirror function

The left and right exterior mirror housings can be electrically folded in and out. Via the switches in the switch train for exterior mirror adjustment with fold in/out function (S50/1) in the front left door control module (N69/1) (RHS vehicle: Front right door control module (N69/2) ), the left/right exterior mirror housing can be moved to the garage position (mirror housings folded in) or the driving position (mirror housings folded out). The switch statuses of the switches for folding the exterior mirror in (S50/1s4) and the switches for folding the exterior mirror out (S50/1s5) are read in by the front left [[door control module]] (N69/1) (RHS vehicle: Front right door control module (N69/2)) inserted and placed onto the CAN as a message for the door control module on the front passenger's side.

The front left door control module (N69/1) and the front right door control module (N69/2) then actuate the motor for folding the mirror in (M21/1m3) and the motor for folding the mirror in (M21/2m3) in the left and right exterior mirror housings.

Up to 31.05.01 the fold in exterior mirror switch (S50/1s4) or the fold out exterior mirror switch (S50/1s5) must be actuated until the mirror housings are in the desired position.

As of 01.06.01 the fold in exterior mirror switch (S50/1s4) or the fold out exterior mirror switch (S50/1s5) merely have to be touched, and the mirror housings are automatically moved to the desired position.

Heating left/right exterior rearview mirrors function

  • 1 - CAN-message: outside temperature
  • 2 - CAN-message: dew point
  • 3 - CAN-message: "Generator running (C.61)"
  • B14 - Outside temperature sensor
  • B31/1 - A/C multifunction sensor
  • G2 - Generator
  • K40/6 - Left front fuse and relay module
  • K40/7 - Right front fuse and relay module
  • M21/1r1 - Left mirror heater
  • M21/2r1 - Right mirror heater
  • N10/6 - Left front SAM control module
  • N10/7 - Right front SAM control module
  • N22 - A/C pushbutton control module
  • N69/1 - Left front door control module
  • N69/2 - Right front door control module

Function prerequisites:

  • Voltage not too low or too high
  • C.61 ON

The left mirror heater (M21/1r1) in the left electrically adjustable and heated exterior rearview mirror (M21/1) and the right mirror heater (M21/1r1) in the right electrically adjustable and heated exterior rearview mirror (M21/2) consist of a heater resistor connected in series with a PTC resistor. The heater resistor is located on the rear of the mirror glass to which it is permanently bonded. The power supply and regulated switching on and switching off of the heater resistors is accomplished by the left front door control module (N69/1)/right front door control module (N69/2). The mirror heater is controlled in relation to the outside air temperature (CAN message from the left front SAM control module (N10/6)) and the dew point (CAN message from automatic A/C pushbutton control module (N22)).

Automatic dimming feature for exterior rearview mirror on driver's side function

For vehicles with option code 249 - INSIDE AND OUTSIDE MIRROR AUTOMATIC DIMMING the exterior rearview mirror on driver's side (M21/1) can be dimmed electro-chromatically.

The inside rearview mirror (A67) in combination with the overhead control panel control module (N70) serves as master for dimming the electrically adjustable and heated left outside mirror (M21/1).

  • 1 - CAN-message: "Shift lever position"
  • 2 - CAN-message: "Reverse gear engaged"
  • A67 - Interior rearview mirror unit
  • M21/1 - Left electrically adjustable and heated exterior rearview mirror
  • M21/2 - Right electrically adjustable and heated exterior rearview mirror
  • N15/5 - Electronic shift lever module control module
  • N70 - Overhead control panel control module
  • N73 - Electronic ignition/starter switch control module

Function prerequisites:

  • Voltage not too low or too high
  • C.15R or C.15 ON

The light reaching the surface of the mirror is reflected to a greater or lesser extent depending on the magnitude of the control voltage. The control voltage is regulated by the interior rearview mirror unit (A67) (master) and the overhead control panel control module (N70). Two discrete leads are connected to the left front door control module (N69/1) for this purpose (vehicles with right-hand steering: right front door control module ((N69/2)).

Regulation is accomplished depending on the ambient light and the light reaching the mirror. These two variables are measured by the ambient light sensor (A67h2) in the interior rearview mirror housing (rear) and the automatic dimming interior rearview mirror sensor (A67h1) in the mirror glass in the interior rearview mirror unit.

If one of the interior lights is switched on or the CAN message "Reverse gear engaged" is received from the electronic ignition/ starter switch control module (N73), the exterior rearview mirror as well as interior rearview mirror become brighter.

DIY

Remove/install complete outside mirror

Shown on model 220 as of VIN 316717 (facelift):

  • 7 - Screw
  • 8 - Bolts

Shown on model 220 up to VIN 316716 (pre-facelift):

  • 1 - Trim strip
  • 2 - Door control unit cover
  • 4 - Door lining
  • 5 - Mounting wedge
  • N69/1 - Left front door control unit
  • N69/2 - Right front door control unit

Shown on model 220 As of VIN 316717 (facelift):

  • 6 - Outside mirrors
  • 9 - Connectors
  • 10 - Sheet metal flap
  • 11 - Cord
  1. Remove paneling on outside mirror
  2. Fold outside mirror (6) manually toward front and unscrew bolt (7)
  3. Fold outside mirror (6) electronically toward rear and unscrew bolt (8)
  4. Press door control unit cover (2) off of door lining (4) with mounting wedge (5). The mount was modified with model refinement as of VIN 316717 (facelift).
  5. Disconnect connector (9) from left front door control unit (N69/1) or right front door control unit (N69/2). Only outside mirrors with EC dimming (2 connectors) are delivered as replacement parts. On vehicles without EC dimming fasten connector (9) not required to wiring harness (tie strap or insulating tape).
  6. Bend sheet metal cap (10) toward inside to achieve more space for lines and connectors (9).
  7. Fasten cord (11) to connectors (9) with friction tape.
  8. Pull outside mirror (6) out of door with electrical lines without damaging them.
  9. Remove cord (11) from connectors
  10. Remove outside mirror (6)
  11. Install in the reverse order

Remove/install gasket on outside mirror

  • 1 - Old gasket
  • 2 - New gasket
  • 3 - Vapor barrier
  • 4 - Remaining piece
  • M21/1 - Left electrically adjustable and heated outside mirror
  • M21/2 - Right electrically adjustable and heated outside mirror
  • A - Recess
  • B - Separation line
  1. Completely remove left electrically adjustable and heated outside mirror (M21/1) or right electrically adjustable and heated outside mirror (M21/2)
  2. Remove vapor barrier (3). Note correct installation positions.
  3. Lay new gasket (2) over old gasket (1) of left electrically adjustable and heated outside mirror (M21/1) or right electrically adjustable and heated outside mirror (M21/2).
  4. Mark cutout (A) for new gasket (2) on old gasket (1).
  5. Remove new gasket (2)
  6. Increase cutout transferred to old gasket (1) by dimension min. 5 mm. and mark cutting line (B).
  7. Cut off gasket (1) off along cutting line (B) and remove outer part from old gasket (1).
  8. Cut elevations off of remaining piece (4) remaining on left electrically adjustable and heated outside mirror (M21/1) or right electrically adjustable and heated outside mirror (M21/2) on old gasket (1). The remaining piece (4) should not have elevations, otherwise the remaining piece (4) and new gasket (2) will not seal properly with one another.
  9. Install new gasket (2) on left electrically adjustable and heated outside mirror (M21/1) or right electrically adjustable and heated outside mirror (M21/2).
  10. Insert vapor barrier (3)
  11. Completely install left electrically adjustable and heated outside mirror (M21/1) or right electrically adjustable and heated outside mirror (M21/2).

Note: You need to keep the old gasket, a part of it is used to seal the hole. The new gasket needs the piece from the old one around the wires. And when you do cut it from the old one make sure you cut it larger than the hole in the new gasket, so when it is installed it seals over the whole area.

Remove/install outside rearview mirror cover

Shown on model 220 as of VIN 316717 (facelift):

  • 1 - Paneling
  • 4 - Outside mirrors
  • 7 - Upper catch spring

Shown on model 220 up to VIN 316716 (pre-facelift):

  • 1 - Paneling
  • 2 - Bottom catch spring
  • 3 - Turn signals
  • 4 - Outside mirrors
  • 5 - Turn signal connector on outside rearview mirror
  • 6 - Turn signal connector in outside rearview mirror covering
  1. Remove mirror glass
  2. Facelift: Release top catch spring (7). Pre-facelift: release bottom catch spring (2).
  3. Remove paneling (1)
  4. Pre-facelift: move bottom catch spring (2) to initial position.
  5. Pre-facelift: check position of connector for turn signal on outside rearview mirror (5) and turn signal connectors in outside rearview mirror covering (6). If the connectors are not in the correct position, damage can occur when the covering (1) is installed.
  6. Push on paneling (1). Ensure that the covering (1) is arrested in the end position by the top catch spring (7) for facelift or bottom catch spring (2) for pre-facelift.
  7. Pre-facelift: Ensure that the turn signal connector is connected properly to the outside rearview mirror (5).
  8. Check for proper function

Removing and installing auxiliary turn signal lamp

Illustrated on facelift vehicle:

  • E6/5 - Left exterior mirror turn signal lamp
  • E6/6 - Right exterior mirror turn signal lamp
  • M21/1e1 - Left outside mirror ambient lamp
  • M21/2e1 - Right outside mirror ambient lamp

Illustrated on pre-facelift vehicle:

  • 1 - Screws
  • 2 - Cover
  • 3 - Guides
  • E6/5 - Left exterior mirror turn signal lamp
  • E6/6 - Right exterior mirror turn signal lamp
  1. Remove covering on exterior rearview mirror
  2. Pre-facelift: unscrew screws (1).
  3. Pre-facelift: remove cover (2) with guides (3) from covering. Installation: Ensure that guides (3) are correctly seated in cover.
  4. Facelift: pull out outside mirror ambient lamp bulb.
  5. Remove left/right exterior mirror turn signal lamp (E6/5, E6/6) from covering
  6. Install in opposite order
  7. Check for proper function

Remove/install mirror glass

Shown on model 220 as of VIN 316717 (facelift):

  • 1 - Retaining spring
  • 2 - Connector
  • 3 - Mirror lens

Shown on model 220 up to VIN 316716 (pre-facelift):

  • 1 - Mirror lens
  • 2 - Retaining spring
  • 3 - Connector
  • 4 - Support spring
  • 5 - Retaining lugs
  • 6 - Clamp
  1. Pre-facelift: remove covering on outside rearview mirror.
  2. Unhook retaining spring (2).
  3. Facelift: Remove mirror glass (1) from drive.
  4. Pre-facelift: Press clip (6) in direction of arrow and remove mirror glass (1) from drive. Do not break off clip (6). Installation: First hook in mirror glass (1) at bottom with retaining lugs (5) into retaining pockets (arrows) on drive. Observe support springs (4).
  5. Disconnect coupling (3)
  6. Install in the reverse order

Removing and installing mirror adjustment drive motor

  • 1 - Mirror adjustment motor
  • 2 - Screws
  • 3 - Connector
  1. Remove cover on outside rearview mirror
  2. Remove mirror glass
  3. Unscrew screws (2)
  4. Remove mirror adjustment motor (1)
  5. Disconnect connector (3)
  6. Install in opposite order

Resources

Load video
YouTube
Remove mirror (facelift).
Load video
YouTube
Remove mirror cover (pre-facelift).
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