Removing and Installing/Replacing Control Unit for Left or Right Seat Adjustment (Front Seat)

61 35 080 - Removing and installing (replacing) control unit for left or right seat adjustment (front seat)





Important!
Read and comply with notes on protection against electrostatic discharge (ESD protection) 61 35 ... Notes on ESD Protection (Electro Static Discharge).





Illustration of problem: (replacement only)
In the event of a faulty seat module, new variants with a 30 mm wider housing will be used as replacements as of 03/05.
- Seat module up to 03/05 approx. 135 mm
- Seat module from 03/05 approx. 165 mm
This results (on the right seat only) in a collision with the central seat connector.
In vehicles up to 03/05 it is therefore necessary to fit the right seat with a new seat pan (applicable from 03/05).
The following SM variants are affected:
- SM H
- SM BA/M
- SM BA/M-HK





Necessary preliminary tasks:
- Disconnect battery negative lead Instructions for Disconnecting and Connecting Battery
- Remove trims for top rail Removing and Installing/Replacing All Trims on Left or Right Seat Rails





Removal and installation:

Note:
To facilitate installation/removal of control unit, move seat upwards fully.

Unlock and disconnect all plug connections in area (1).

Unlock catches (2) towards rear, feed out control unit for seat adjustment (3) in direction of arrow and remove from seat rail (4).





Installation Note:
Make sure mounts (1) and retaining lugs (2) of control unit for seat adjustment (3) are correctly seated.





Replacement:
Remove Removing and Installing/Replacing All Trims on Left or Right Seat Rails trim for top rail on outside.
Unlock central seat connector (1) and disconnect.
Unlock and disconnect all plug connections from connector strips (2).





Pull seat pan (1) forwards slightly and unclip from seat linkage.
Lift seat pan at rear left and right out of seat rail.





Turn seat pan in seat mechanism and feed out towards front.
Unclip seat wiring harnesses from seat pan.
Remove seat pan.





The new seat module is secured to the new seat pan in the area marked "R".
Wiring harness (1) must be relaid accordingly.
Pay attention to new clip positioning (2).





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