695819 Removing and Installing Driver's Airbag Unit
WM 695819 Removing and installing driver's airbag unit
Removing driver's airbag unit
WARNING
Danger of injury and material damage if airbag units are not handled correctly.
-> Always observe the safety regulations for handling airbag units => 69 Safety regulations for vehicles with airbag and belt tensioner
-> 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.
-> Switch off ignition and leave ignition key inserted (steering must not be locked). Disconnect battery. Route or isolate ground strap so that all contact with a ground carrier (e.g. body, seat frame) is avoided. => 90 Work instructions after disconnecting the battery.
-> After the battery is disconnected, always wait for 1 minute before disconnecting the airbag plugs.
Overview of driver's airbag unit
1. Switch on the ignition and move the steering wheel back and down as far as possible.
2. Disconnect the battery => 90 Work instructions after disconnecting the battery.
3. Turn steering wheel 90° to the right -arrow A-.
Undoing airbag unit
4. Insert a long hexagon-socket wrench (size 3 with ball head) fully into the opening on the back of the steering wheel -arrow C- , press the strap outwards -arrow D- and pull the airbag unit.
Undoing airbag unit
5. Turn the steering wheel 180° -arrow B- , position the long hexagon-socket wrench through the opening in the steering wheel and press the strap out -arrow D-.
Undoing airbag unit
6. Pull airbag unit down from the steering wheel, turn steering wheel back 180° if necessary -arrow A- and repeat process.
Undoing airbag unit
7. Disconnect electrical plug connection on the steering column switch and remove airbag unit.
Information
- The airbag unit is fastened with a strap to the steering wheel. The strap can be pressed apart at the two openings using a screwdriver.
Removing airbag unit
Installing driver's airbag unit
Information
- To make sure that the emission spring on the airbag unit is not positioned on the foam section of the steering wheel, the airbag unit must not be tilted from top to bottom on the steering wheel.
- Two additional electrical connectors need to be connected to the steering column support for heated steering wheels.
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
Danger of injury and material damage.
-> Before installing the airbag unit, check to see whether the leg spring and/or the metal stop are bent.
-> The airbag unit must only be installed using operational leg springs in the correct position.
-> The leg spring must not jam or grind.
-> Maintain a maximum distance whilst checking the equipment.
-> Do not expose face and other parts of the body to the airbag unit.
1. Place airbag unit on a suitable support.
2. Visual inspection: The leg spring and metal stop must not be bent.
Checking spring and metal stop
3. Remove the leg spring from the side, the leg spring must not jam or catch.
CAUTION
Risk of damage.
-> Make sure that the electrical buttons on the airbag unit are not damaged.
4. Place airbag unit on the bottom spoke of the steering wheel -arrow A- and press the connector into the steering column switch using your thumbs until the connector engages audibly.
Installing airbag unit
5. Press the airbag unit against the steering wheel at the top -arrow B-.
Installing airbag unit
CAUTION
Risk of damage.
-> Make sure that the electrical buttons on the airbag unit are not damaged.
6. Insert the airbag unit into the steering wheel with both hands using intermittent pressure.
Engaging the airbag unit
Information
- It is important to ensure that the strap on the airbag unit is completely engaged. This can be ensured by pulling and pressing on the airbag unit.
7. 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
Connect the battery and carry out work instructions after disconnecting the battery. => 90 Work instructions after disconnecting the battery