Description - Special Tools
Reference: W220 Wiki Section WIS 58 Tools and Accessories
There are a number of useful Mercedes-Benz special tools that considerably help (or are required) when dismantling interior of car to retrofit stuff - here is a list of some of them.
|W126 589 0010 00||Steering Wheel Airbag removal tool|
|W963 589 0105 00||COMAND/Audio-30/W220 Cluster Removal Tools|
|W140 589 0233 00||Pulling hooks (for removing cluster) 124/126/129/new cars|
|W110 589 0059 00||Pulling hooks (for removing cluster) W107/W123|
|W110 589 0359 00||Hard Wedge (for unclipping panels etc)|
|W115 589 0359 00||Long Wedge (for unclipping panels etc)|
|TBA||Connector dissasembly tool (to remove wires from connector plugs/sockets)|
Long Wedge and Pulling Hooks
Spark Plug HT Wires Removal Tool
A special spark plug wire removal tool is available. It is a 17mm, open ended tool with a 25mm off-set and is made by JTC with part number J-1308. It can be found in eBay for $20.
JTC Spark Plug Wire Removal Tool J-1308
Instrument Cluster Repair Tool Kit
Homemade ones fashioned out of 1mm thick sheet aluminium.
Electronic Ignition Switch (EIS)
A home made tool can be manufactured several pieces of PVC pipe for unscrewing the EIS bezel.
The bezel is easily unscrewed.
Strut Seal Remover Tool - AIRmatic
A commercial tool is available to remove the top seal on the front axle AIRmatic suspension strut.
How to make a DIY version is shown here http://w220.ee/Airmatic#Tools_Required_-_DIY_Refurbishment_Airmatic_Spring_Strut_Front_.2840.29
Residual Pressure Valve Socket - AIRmatic
A commercial 1/4" drive AIRmatic Residual Pressure Holding Valve Tool is available. It is used to remove and install the brass Residual Pressure Holding Valves at each of the air inlets to the front-axle AIRmatic suspension struts.
How to make a DIY version of an AIRmatic Residual Pressure Holding Valve Tool is shown here http://w220.ee/Airmatic#Tools_Required_-_DIY_Refurbishment_Airmatic_Spring_Strut_Front_.2840.29
Front and Rear Axle Angle Measurement Tool
When adjusting the height of a M-B W220 with AIRmatic suspension it is necessary to know the angles of the front and rear axles.
WIS specifies that an inclinometer should be used but any angle measuring device will suffice, although some are easier to use than others.
There are several free applications for measuring angles available for smart phones.
For how to use see Section Angle Measuring Device or Inclinometer
Front Suspension Tools
Ball Joint Separator/Remover Tool - Front Suspension
The W220 requires a larger size Ball Joint separator/remover (19mm).
- Mercedes-Benz Ball Joint Installer Remover W220 W211 W230 JTC 1310A or
- Pro-Auto-Tools 1310A Mercedes Ball Joint Tool.
- Mercedes/BMW ball joint separator $25 on eBay.
Torque Strut Bushing Kit - Front Suspension
Baum Tools have a Torque Strut Bushing Kit Number 8220-0643 for about US$171 to be used on the Front Lower Control Arm Bushings. However it seems that this tool is not an absolute necessity. You can get by with making do with other means.
Photo of Baum Torque Strut Bushing Kit B220-0643.
LCA Bushing Removal and Installation Tool - Front Suspension
Removal and installation tool for supporting joint in wheel carrier. Required to replace lower control arm bushings.
MB Part number W202589004300 (replaces W140589074300 and W201589054300). While the tool can be bought only in full by part number W202589004300, the tool has part number W202589004301 engraved on the inner part and part number W202589004302 on the outer part. Both parts have also the month of manufacture engraved.
Rear Suspension Tools
AIRmatic Lower Rubber Bushes - Rear Suspension
The Rear AIRmatic to Lower Control Arm connection Rubber Bushes are designated (17), and require a special extraction and insertion tool (202589004300). Note this is the same tool as the Front Lower Control Arm (LCA) Bushing Removal and Installation Tool described above.
Distronic (DTR) Calibration Tool
Distronic calibration and alignment should be performed by a M-B expert using an alignment tool such as MERCEDES Distronic Adjustment Calibration Tool 900589072100 manufactured by Polytec with model number OJV-060.
Engine Mounts - Special Offset Spanner
BenzWorld Members report there is a special M-B offset wrench/spanner that is used on the top bolt of the W140 chassis mounts as they are particularly tough to get at. They may be useful for W220 engine mount replacement.
The wrenches are available in both 16mm and 17mm sizes. 
Mercedes Benz Offset 17mm Engine Mount Wrench