69581900 Removing and installing driver's airbag unit
WM 695819 Removing and installing driver's airbag unit
Preliminary work for driver's airbag unit
Information
Operate the steering wheel with the battery disconnected. Before disconnecting the battery, observe the following points:
1. Insert ignition key into ignition lock, switch on ignition and then off again.
2. Leave ignition key inserted.
3. Disconnect battery. => Work instructions after disconnecting the battery
General warning notes
General warnings for driver's airbag unit
WARNING
Incorrect triggering of airbag module.
- Danger of injury and damage to property as a result of incorrect handling of airbag units!
-> The safety regulations => Safety regulations for handling airbag and belt tensioner units must be followed.
-> The airbag unit must always be stowed so that the airbag opening faces upwards!
-> If removed for an extended period, the airbag unit must be kept in a locked place!
-> Remove ignition key. Disconnect battery. Route or isolate ground strap so that all contact with a ground carrier (e.g. body, seat frame) is avoided.
-> After the battery is disconnected, always wait for 1 minute before disconnecting the airbag plugs.
CAUTION
Incorrect release of airbag unit.
- Danger of injury and material damage if airbag units are not installed correctly!
-> Before installing the airbag unit, check whether the locking clip, the airbag unit mounting and/or the metal stop on the steering wheel are deformed. If there is deformation, replace the damaged component (steering wheel/airbag unit).
-> The airbag unit must only be installed with locking clips that are operational and are in the correct position.
-> The locking clip must not jam or grind.
-> Do not expose face and other parts of the body to the airbag unit.
Removing driver's airbag unit
Overview of driver' airbag unit
1. Turn steering wheel 90° and stick a T30 (Torx with handle) or medium-size screwdriver through the opening of the steering wheel.
Releasing driver's airbag unit
WARNING
Incorrect triggering of airbag module.
- Danger of injury and damage to property as a result of incorrect handling of airbag units!
-> The safety regulations => Safety regulations for handling airbag and belt tensioner units must be followed.
-> The airbag unit must always be stowed so that the airbag opening faces upwards!
-> If removed for an extended period, the airbag unit must be kept in a locked place!
-> Remove ignition key. Disconnect battery. Route or isolate ground strap so that all contact with a ground carrier (e.g. body, seat frame) is avoided.
-> After the battery is disconnected, always wait for 1 minute before disconnecting the airbag plugs.
Incorrect triggering of airbag module.
2. Use the screwdriver or T30 to compress the locking clip and pull the airbag unit from the steering wheel with the fingers.
Locking clip compressed -A-
Locking clip
Locking clip relieved -B-
3. Unlock electrical connector -2- on steering wheel -A- and remove.
Unlocking connector for airbag wiring harness
Removing airbag lead:
4. Unlock electrical connectors -1, 2- with a screwdriver and unplug.
Removing airbag lead
5. Unplug electrical connector -3-.
Installing driver's airbag unit
Information
If a new component (e.g. sensor, airbag control unit, airbag unit) of the airbag system has to be installed, the new component will be supplied with a barcode sticker (tear-off label).
Sample tear-off label shown >> airbag sensor
- Tear off the tear-off label -2- on the new component -1- and stick it under the heading Proof of airbag system check/component replacement in the Guarantee and Maintenance booklet.
Tear-off label
- The replacement date and mileage must be documented and the booklet must be stamped with the dealer's stamp.
CAUTION
Incorrect release of airbag unit.
- Danger of injury and material damage if airbag units are not installed correctly!
-> Before installing the airbag unit, check whether the locking clip, the airbag unit mounting and/or the metal stop on the steering wheel are deformed. If there is deformation, replace the damaged component (steering wheel/airbag unit).
-> The airbag unit must only be installed with locking clips that are operational and are in the correct position.
-> The locking clip must not jam or grind.
-> Do not expose face and other parts of the body to the airbag unit.
Installing airbag line:
1. Push in the electric connector -3- until it clicks into place.
Installing airbag line
2. Press in the electric connectors -1, 2- until they click into place, then clip the retainer into the electric connectors -1, 2-.
Incorrect triggering of airbag module. => Removing and installing driver's airbag unit - General warnings
3. Insert electric connector for the airbag wire harness -2- until it clicks into place.
Inserting connector for airbag wire harness
4. Engage the airbag unit in the steering wheel with both hands using intermittent pressure.
Engaging airbag unit
5. Each time the airbag unit is fitted, it is important to check that it is installed correctly by pulling the airbag unit, tapping the steering wheel rim and performing a visual inspection (position of airbag unit on steering wheel).
Checking that airbag unit is seated securely
Subsequent work
Work in wake of driver's airbag unit
1. Connect the battery. Carry out => Work instructions after disconnecting the battery.