Rearview mirror: Difference between revisions

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==Design==
<!-- GF68.49-P-2100-02S Inside rearview mirror, design -->
<!-- GF68.49-P-2100-02S Inside rearview mirror, design -->
==Design==
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Tasks:
<!-- GF68.49-P-2100-04S Inside rearview mirror, task -->
* The inside rearview mirror (A67) can be adjusted manually.
* Depending on the equipment (see below), the manually adjusted mirror position can be stored, called up later with the memory function and actuated automatically.
* The mirror lens of the inside rearview mirror (A67) can be electro-chromatically dimmed. Dimming is accomplished according to the variables measured by the mirror dimming forward sensor (A67h1) and mirror dimming backward sensor (A67h2).
* The left reading lamp (A67e1) and right reading lamp (A67e2) as well as the ambient light (A67e3) are also integrated in the mirror housing.


==Ambient lamp==
<!-- GF82.20-P-2021S, Switching on/off ambient lamp, function -->
The ambient lamp (A67e3) is a bright LED located in the interior
rear view mirror (A67). It serves for illumination of the center console.


<!-- GF68.49-P-2100-04S Inside rearview mirror, task -->
The ambient lamp is switched on automatically when C.15r switched on
The inside rearview mirror (A67) can be adjusted
and switched off automatically when C.15r is switched off.
manually.Depending on the equipment, the manually adjusted
mirror position can be stored, called up later with the memory
function and actuated automatically. The mirror glass is electrochromatically dimmable.


The inside rearview mirror (A67) in combination with the overhead
The ambient lamp (A67e3) is controlled directly by the overhead
control panel control module (N70) serves as master for dimming
control panel control module (N70). The overhead control panel
the electrically adjustable and heated left outside mirror (M21/1)
control module (N70) receives the information "Status c.15r" for
(special equipment).
this purpose via the CAN bus from the electronic ignition/starter
switch control module (N73).


<!-- GF68.49-P-2100-03S Inside rearview mirror, function -->
The ambient lamp is independent of the automatic light
The inside rearview mirror (A67) can be adjusted automatically
switch daylight sensor (B32/1) and the position of the door
with the memory function (depending on equipment), i.e. stored
contact ON and OFF switch (N70s3).
mirror position can be called upFor this purpose, two DC motors, a
vertical adjustment motor (A67m1) and a horizontal adjustment
motor (A67m2) are present in the housing actuated by the
overhead control panel control module (N70).
The vertical position potentiometer (A67r1) and horizontal position potentiometer (A67r2)
are located next to the motors for position recognition.
The mirror lens of the inside rearview mirror (A67) can be electrochromatically dimmed.
Dimming is accomplished according to the
variables measured by the mirror dimming forward sensor (A67h1)
and mirror dimming backward sensor (A67h2).
The left reading lamp (A67e1) and right reading lamp (A67e2) as
well as the ambient light (A67e3) are also integrated in the mirror
housing.
 
Additional functions on vehicles as of 1.9.03 with telephone
or with telephone and voice control system (VCS):
A hands-free system microphone group (A67b1) is integrated in the
inside rearview mirror (A67).
The following functions can be performed via the hands-free
system microphone group (A67b1):
* Voice input for making telephone calls using the hands-free system
* Voice input for voice control system (VCS) (interactive dialog with VCS)


The signals are transmitted to the hands-free system control
==Reading lamps==
module (A35/1) or the voice control module (A35/11) via the
The left reading lamp (A67e1) and right reading lamp (A67e2) are integrated in the mirror housing.
hands-free system microphone group (A67b1).


== Automatic dimming function ==
<!-- GF68.49-P-0003S, Automatic dimming interior rearview mirror, function -->
<!-- GF68.49-P-0003S, Automatic dimming interior rearview mirror, function -->


Function prerequisites
Function prerequisites:
* No voltage or voltage too low
* No voltage or voltage too low
* C. 15R or C. 15 ON
* C. 15R or C. 15 ON


Function
The interior rearview mirror unit (A67) can be dimmed electro-chromatically.
The interior rearview mirror unit (A67) can be dimmed electrochromatically.
For this purpose, a layer of electrolyte gel is located in the mirror
For this purpose, a layer of electrolyte gel is located in the mirror
glass between the reflector and the cover lens.
glass between the reflector and the cover lens.
Line 84: Line 68:
The light reaching the surface of the mirror is reflected to a greater
The light reaching the surface of the mirror is reflected to a greater
or lesser extent due to the magnitude of the actuating voltage.
or lesser extent due to the magnitude of the actuating voltage.
The actuating voltage is controlled by the electronic circuitry in the
The actuating voltage is controlled by the electronic circuitry in the interior rearview mirror.  
interior rearview mirror.  
This procedure is subject to the ambient light and the light reaching the mirror.
This procedure is subject to the ambient light and the light reaching the mirror.


These two input variables are sensed by the ambient light sensor (A67h2)
These two input variables are sensed by the ambient light sensor (A67h2)
in the mirror housing (rear side) and the automatic dimming interior
in the mirror housing (rear side) and the automatic dimming interior
rearview mirror sensor (A67h1) in the mirror glass of the interior rearview
rearview mirror sensor (A67h1) in the mirror glass of the interior rearview mirror unit (A67).
mirror unit (A67).


If an interior light is switched on or the reverse gear (CAN
If an interior light is switched on or the reverse gear (CAN message) is engaged,
message) is engaged, the interior rearview mirror is always
the interior rearview mirror is always switched to a brighter setting.
switched to a brighter setting.This is accomplished by an additional
This is accomplished by an additional signal lead from the overhead control panel control module
signal lead from the overhead control panel control module
(N70) to the interior rearview mirror unit (A67).
(N70) to the interior rearview mirror unit (A67) .


The interior rearview mirror unit (A67) serves also as master
The interior rearview mirror unit (A67) serves also as master for the automatic dimming exterior rearview mirror (driver's side).
for the automatic dimming exterior rearview mirror (driver's side).


=== Driver-side exterior rearview mirror automatic dimming feature ===
<!-- GF68.49-P-2100-04S Inside rearview mirror, task -->
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).


<!-- GF68.49-P-0003S, Automatic dimming interior rearview mirror, function -->
<!-- GF88.79-P-2003S, Automatic dimming feature for exterior rearview mirror on driver's side, function -->
The ambient lamp (A67e3) is a bright LED located in the interior
<!-- 220.063 /065 with CODE (249b) Automatic dimming interior and exterior (driver-side) rearview mirrors -->
rear view mirror (A67). It serves for illumination of the center
{|
console.
|[[File:W220_mirror_automatic_dimming_feature.png]]
Switching ambient lamp on/off
|
The ambient lamp is switched on automatically when c.15r
* 1 - CAN-message: "Shift lever position"
switched on and switched off automatically when c.15r is
* 2 - CAN-message: "Reverse gear engaged"
switched off.
* A67 - Interior rearview mirror unit
 
* M21/1 - Left electrically adjustable and heated exterior rearview mirror
Control
* M21/2 - Right electrically adjustable and heated exterior rearview mirror
The ambient lamp (A67e3) is controlled directly by the overhead
* N15/5 - Electronic shift lever module control module
control panel control module (N70). The overhead control panel
* N70 - Overhead control panel control module
control module (N70) receives the information "Status c.15r" for
* N73 - Electronic ignition/starter switch control module
this purpose via the CAN bus from the electronic ignition/starter
|}
switch control module (N73).
 
The ambient lamp is independent of the automatic light
switch daylight sensor (B32/1) and the position of the door
contact ON and OFF switch (N70s3).
 
 
<!-- SI68.40-P-0001A, 17.06.2004, Service Information: Discontinuation of memory feature in inside rearview mirror. -->
 
220.### ## as of 392659 with CODE (275a) Memory package (driver's seat, steering column, mirrors.
 
The memory feature for the electrical inside rearview mirror can lo
longer be ordered and is no longer installed in the series
production of the models specified above.
 
Inform customer that this function is no longer part of the memory feature (seat adjustment, steering wheel height adjustment and outside mirror adjustment). The current price list can be used to support this statement.
 
<!-- GF88.79-P-2003S, Automatic dimming feature for exterior rearview mirror on driver's side, 6.4.98 -->
 
220.063 /065 with CODE (249b) Automatic dimming interior and exterior (driver-side) rearview mirrors
 
Driver-side exterior rearview mirror automatic dimming feature
 
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
[[File:W220_mirror_automatic_dimming_feature.png]]


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


Function
The mirror glass in the exterior rearview mirror on the driver's side
can be dimmed electro-chromatically. For this purpose a layer of
electrolytic gel is located in the mirror glass between the reflector
and cover glass. When a voltage is supplied to this gel it changes
its permeability to light.
The light reaching the surface of the mirror is reflected to a greater
The light reaching the surface of the mirror is reflected to a greater
or lesser extent depending on the magnitude of the control
or lesser extent depending on the magnitude of the control
voltage. The control voltage is regulated by the interior rearview
voltage. The control voltage is regulated by the interior rearview
mirror unit (A67) (master) and the overhead control panel
mirror unit (A67) (master) and the overhead control panel control module (N70).
control module (N70). Two discrete leads are connected to the
Two discrete leads are connected to the left front door control module (N69/1)
left front door control module (N69/1) for this purpose (vehicles
for this purpose (vehicles with right-hand steering: right front door control module ((N69/2)).
with right-hand steering: right front door control module ((N69/2)).


Regulation is accomplished depending on the ambient light and
Regulation is accomplished depending on the ambient light and
Line 179: Line 126:
starter switch control module (N73), the exterior rearview mirror
starter switch control module (N73), the exterior rearview mirror
as well as interior rearview mirror become brighter.
as well as interior rearview mirror become brighter.
== Memory feature ==
<!-- GF68.49-P-2100-03S Inside rearview mirror, function -->
The inside rearview mirror (A67) can be adjusted automatically
with the memory function (depending on equipment), i.e. stored mirror position can be called up.
For this purpose, two DC motors, a vertical adjustment motor (A67m1) and a horizontal adjustment
motor (A67m2) are present in the housing actuated by the overhead control panel control module (N70).
The vertical position potentiometer (A67r1) and horizontal position potentiometer (A67r2)
are located next to the motors for position recognition.
<!-- SI68.40-P-0001A, 17.06.2004, Service Information: Discontinuation of memory feature in inside rearview mirror. -->
'''Note:''' As of chassis 392659 with CODE (275a) Memory package (driver's seat, steering column, mirrors)
the inside rearview mirror memory function is no longer part of the memory package
(seat adjustment, steering wheel height adjustment and outside mirror adjustment).
The memory feature for the electrical inside rearview mirror can no longer be ordered
and is no longer installed in the series production of the models specified above.
<!--The current price list can be used to support this statement.-->


==Hands-free system microphone group==
==Hands-free system microphone group==
<!-- GF68.49-P-2100-02S Inside rearview mirror, design -->
<!-- GF68.49-P-2100-02S Inside rearview mirror, design -->
Additional equipment on vehicles as of 1.9.03 with telephone or with telephone and
<!--Additional equipment on vehicles as of 1.9.03 with telephone or with telephone and voice control system (VCS)-->
voice control system (VCS)
[[File:W220_Hands-free_system_microphone_group.jpg|thumb|none|A67b1 - Hands-free system microphone group]]
A67b1 - Hands-free system microphone group


[[File:W220_Hands-free_system_microphone_group.jpg]]
<!-- GF68.49-P-2100-03S Inside rearview mirror, function -->
On vehicles as of 01/09/2003 with telephone or with telephone and voice control system (VCS)
a hands-free system microphone group (A67b1) is integrated in the inside rearview mirror (A67).
The following functions can be performed via the hands-free system microphone group (A67b1):
* Voice input for making telephone calls using the hands-free system
* Voice input for voice control system (VCS) (interactive dialog with VCS)


The signals are transmitted to the hands-free system control module (A35/1) or the voice control module (A35/11) via the hands-free system microphone group (A67b1).


==Removing inside rearview mirror==
==Removing inside rearview mirror==

Revision as of 19:09, 5 November 2016

Location

The interior rearview mirror unit (A67) is located on the overhead control panel control module (N70) centered at front of the headliner.

  • A67 - Interior rearview mirror unit
  • N70 - Overhead control panel control module

Design

  • A67 - Inside rearview mirror
  • A67e1 - Left reading lamp
  • A67e2 - Right reading lamp
  • A67e3 - Ambient light
  • A67h1 - Automatic dimming mirror forward sensor
  • A67h2 - Automatic dimming mirror backward sensor
  • A67m1 - Vertical adjustment motor
  • A67m2 - Horizontal adjustment motor
  • A67r1 - Vertical position potentiometer
  • A67r2 - Horizontal position potentiometer

Tasks:

  • The inside rearview mirror (A67) can be adjusted manually.
  • Depending on the equipment (see below), the manually adjusted mirror position can be stored, called up later with the memory function and actuated automatically.
  • The mirror lens of the inside rearview mirror (A67) can be electro-chromatically dimmed. Dimming is accomplished according to the variables measured by the mirror dimming forward sensor (A67h1) and mirror dimming backward sensor (A67h2).
  • The left reading lamp (A67e1) and right reading lamp (A67e2) as well as the ambient light (A67e3) are also integrated in the mirror housing.

Ambient lamp

The ambient lamp (A67e3) is a bright LED located in the interior rear view mirror (A67). It serves for illumination of the center console.

The ambient lamp is switched on automatically when C.15r switched on and switched off automatically when C.15r is switched off.

The ambient lamp (A67e3) is controlled directly by the overhead control panel control module (N70). The overhead control panel control module (N70) receives the information "Status c.15r" for this purpose via the CAN bus from the electronic ignition/starter switch control module (N73).

The ambient lamp is independent of the automatic light switch daylight sensor (B32/1) and the position of the door contact ON and OFF switch (N70s3).

Reading lamps

The left reading lamp (A67e1) and right reading lamp (A67e2) are integrated in the mirror housing.

Automatic dimming function

Function prerequisites:

  • No voltage or voltage too low
  • C. 15R or C. 15 ON

The interior rearview mirror unit (A67) can be dimmed electro-chromatically. For this purpose, a layer of electrolyte gel is located in the mirror glass between the reflector and the cover lens. Voltage connected to the gel modifies its permeability to light. The light reaching the surface of the mirror is reflected to a greater or lesser extent due to the magnitude of the actuating voltage. The actuating voltage is controlled by the electronic circuitry in the interior rearview mirror. This procedure is subject to the ambient light and the light reaching the mirror.

These two input variables are sensed by the ambient light sensor (A67h2) in the mirror housing (rear side) and the automatic dimming interior rearview mirror sensor (A67h1) in the mirror glass of the interior rearview mirror unit (A67).

If an interior light is switched on or the reverse gear (CAN message) is engaged, the interior rearview mirror is always switched to a brighter setting. This is accomplished by an additional signal lead from the overhead control panel control module (N70) to the interior rearview mirror unit (A67).

The interior rearview mirror unit (A67) serves also as master for the automatic dimming exterior rearview mirror (driver's side).

Driver-side exterior rearview mirror automatic dimming feature

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).

  • 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.

Memory feature

The inside rearview mirror (A67) can be adjusted automatically with the memory function (depending on equipment), i.e. stored mirror position can be called up. For this purpose, two DC motors, a vertical adjustment motor (A67m1) and a horizontal adjustment motor (A67m2) are present in the housing actuated by the overhead control panel control module (N70). The vertical position potentiometer (A67r1) and horizontal position potentiometer (A67r2) are located next to the motors for position recognition.

Note: As of chassis 392659 with CODE (275a) Memory package (driver's seat, steering column, mirrors) the inside rearview mirror memory function is no longer part of the memory package (seat adjustment, steering wheel height adjustment and outside mirror adjustment). The memory feature for the electrical inside rearview mirror can no longer be ordered and is no longer installed in the series production of the models specified above.

Hands-free system microphone group

A67b1 - Hands-free system microphone group

On vehicles as of 01/09/2003 with telephone or with telephone and voice control system (VCS) a hands-free system microphone group (A67b1) is integrated in the inside rearview mirror (A67). The following functions can be performed via the hands-free system microphone group (A67b1):

  • Voice input for making telephone calls using the hands-free system
  • Voice input for voice control system (VCS) (interactive dialog with VCS)

The signals are transmitted to the hands-free system control module (A35/1) or the voice control module (A35/11) via the hands-free system microphone group (A67b1).

Removing inside rearview mirror

  • 1 - Inside rearview mirror
  • 2 - Paneling
  • 3 - Paneling
  • 4 - Retaining plate
  1. Remove overhead control panel control module with front dome lamp
  2. Unclip paneling (2) on inside rearview mirror
  3. Remove paneling (3)
  4. Remove inside rearview mirror (1) by inserting screwdriver between inside rearview mirror (1) and retaining plate (4) and prying out inside rearview mirror
  5. Install in opposite order
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