916219 Removing and installing control unit for steering wheel electronics

WM 916219 Removing and installing control unit for steering wheel electronics

Tools





Preliminary work

Preliminary work for removing and installing control unit for steering wheel electronics

1. If a new control unit has to be installed, the values/coding must be read out using the 2nd generation PIWIS Tester 9818 prior to removing the "old" control unit. -> 916255 Replacing control unit for steering wheel electronics 916255 Replacing control unit for steering wheel electronics.
2. Remove steering column casing. -> 481319 Removing and installing steering column casing - section on "Removing" 481319 Removing and installing steering column casing

Removing control unit for steering wheel electronics

Information

- The control unit for steering wheel electronics is bolted to the steering column switch.

1. Pull out electric plug connection -1- at the underside -A-.





Pulling out plug connection at the bottom

2. Pull off electric plug connections -1- ( -A- ).





Unscrewing fastening screw

3. Release and pull out electric plug connection -2- ( -B- ).
4. Unscrew fastening screw -3-.
5. Lift up the clips -1- ( -A- ).





Pressing out clips

6. Remove control unit -2- from the steering column switch -3- ( -B- ).

Installing control unit for steering wheel electronics

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

1. The control unit is installed in reverse order to removal.

Subsequent work

Subsequent work for removing and installing control unit for steering wheel electronics

1. If the control unit was replaced, the "new" control unit must be adapted to suit the vehicle using the 2nd generation PIWIS Tester 9818. -> 916255 Replacing control unit for steering wheel electronics 916255 Replacing control unit for steering wheel electronics.
2. Install steering column casing. -> 481319 Removing and installing steering column casing - section on "Installing" 481319 Removing and installing steering column casing