Turn Signal Switch: Service and Repair

WM 945019 Removing and installing steering-column switch

Technical values





Preliminary work

Preliminary work for removing and installing steering column switch

1. Observe the airbag safety regulations. => 69 Safety regulations for vehicles with airbag and belt tensioner
2. Remove driver's airbag unit. => 695819 Removing and installing driver's airbag unit - section on "Removing"
3. Remove steering wheel. => 481019 Removing and installing steering wheel - section on "Removing"
4. Remove steering column trim. => 481319 Removing and installing steering column trim - section on "Removing"

Removing steering column switch

CAUTION

Risk of short circuit.

-> Before removing steering column switch, remove ignition key.

WARNING

Risk of damage to airbag contact unit.

-> When removing and installing steering column switch, the steering wheel must be pulled off in the straight-ahead position. This ensures that the airbag contact unit is locked in the central position.
-> If the setting has inadvertently changed (locking element released, airbag contact unit out of adjustment), the airbag contact unit must be adjusted as follows. => 945019 Removing and installing steering column switch - section on "disassembling and assembling".





Overview of steering column switch

1. Press locking element for the electrical plug and pull off the plug.





Pulling off plug

2. Loosen fastening screw and pull steering column switch downwards from the steering column.





Removing steering column switch

Installing steering column switch

1. Slide steering column switch as far as it will go on to the steering column and secure with fastening screw. => Tightening torque: 4.5 ftlb.





Installing steering column switch

2. Push on plug of steering column switch until it is felt to engage.





Inserting the plug

Disassembling and assembling steering-column switch

Disassembling steering column switch





Overview of disassembling and assembling steering column switch





Information

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





Steering column switch designations

1. Lift up the three retaining tabs carefully and remove airbag contact unit -C-.





Removing airbag contact unit

2. Unscrew the six fastening screws.





Unscrewing fastening screws

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





Removing electronic unit

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





Removing GRA switch

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





Removing switch for wiper and washer system

Assembling steering column switch

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





Inserting switch for wiper and washer system

2. Engage the GRA switch and fold it upwards.





Installing 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.





Screwing in fastening screws

WARNING

Risk of damage to airbag contact unit.

- If the contact unit has been adjusted, proceed in accordance with the following work instruction:

-> 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 locking element engages. The rotor arrow marking must be positioned between the arrow markings of the contact unit

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





Installing airbag contact unit

Subsequent work

Subsequent work for removing and installing steering column switch

1. Install steering column trim. => 481319 Removing and installing steering column trim - section on "Installing"
2. Install steering wheel. => 481019 Removing and installing steering wheel - section on "Installing"
3. Install driver's airbag unit. => 695819 Removing and installing driver's airbag unit - section on "Installing"