Overhaul

WM 945037 Disassembling and assembling steering column switch

Preliminary work - steering column switch

=> 695819 Removing and installing driver's airbag unit - "Removing" section

=> 481019 Removing and installing steering wheel - "Removing" section

=> 481319 Removing and installing trim - "Removing" section

Disassembling and assembling steering column switch

Disassembling steering column switch





Diagram of steering column switch





Information

Ensure that arrow -A- on the rotor is positioned between the markings -B- of the arrows -C- on the airbag contact unit and that the locking element -D- is engaged.





Airbag contact unit marking

1. Carefully lift up the three retaining tabs and remove airbag contact unit -C-.





Airbag contact unit locking tabs

2. Unscrew the six fastening screws.





Fastening screws

3. Turn the steering column switch round and remove the electronic unit -E-.





Electronic unit

4. Pull the GRA switch -B- downward and disengage.





GRA switch

5. Pull switch for wiper and washer system -D- up and out of the mount.





Switch for wiper and washer system

Assembling steering column switch

WARNING

Airbag contact unit not set correctly

- Malfunction in driver's airbag unit

-> When removing and installing the steering column switch, turn the steering wheel so that the wheels are in straight-ahead position. This ensures that the airbag contact unit is locked in the central position.
-> Do not trap the cable of the airbag contact unit.
-> Check that the cable is routed correctly.

Information

If the airbag contact unit setting was changed accidentally, it must be adjusted. To position the airbag contact unit in the central position, press the locking element and turn the rotor carefully to the left as far as it will go. Then turn the rotor carefully to the right, approx. 3.5 to 3.75 revolutions, until the lock engages. The arrow marking on the rotor must be positioned between the arrow markings on the contact unit.

1. Insert switch for wiper and washer system -D- into the mount.





Switch for wiper and washer system

2. Attach the GRA switch -B- and fold it upwards.





GRA switch

3. Turn the steering column switch and position the electronic unit.
4. Turn the steering column switch round again and screw in the six fastening screws.





Screw in 6 fastening screws.

5. Position airbag contact unit and press onto the steering column switch until the three tabs engage -arrows-.





Position airbag contact unit

Subsequent work - steering column switch

=> 481319 Removing and installing trim - "Installing" section

=> 481019 Removing and installing steering wheel - "Installing" section

=> 695819 Removing and installing driver's airbag unit - "Installing" section