Particularly important from the list of precautions are the following:
When repairing a vehicle equipped with an airbag, be sure to disconnect the battery.
Separate the plug connection additionally and insulate (cover up) negative pole of the voltage supply. It is located in cars up to 6/92 behind the front console, and from 7/92 - at the location of the legs of the passenger sitting next to the driver, above the electronics unit (bottom illustration).
Although the airbag should only be handled by professionals, it must be remembered that it is imperative to disconnect the additional plug connection when working on it (arrow) supply voltage. It is located in cars up to 6/92 behind the front console, and from 7/92 - at the location of the legs of the passenger sitting next to the driver, above the electronics unit (pic. on right). Where the electronics unit is located, you will find out in the chapter «Body electrical system», removal of the center console is described in chapter «Salon».
Removing the airbag unit in the steering wheel:
Left: The upper part of the steering column trim has been removed so that the plug connection can be disconnected (1) airbag wires. Next, unscrew the T30 bolts (2), that hold the airbag unit in the steering wheel.
Right: airbag (2) removed from steering wheel (1). plug connection (arrow) additionally reinforced with a bracket.
- When interrupting work, never leave the airbag out of sight.
- Lay the airbag unit only with an energy absorbing plate (gasket) up.
- When welding on the vehicle, disconnect the battery.
- After an accident, replace all system components.
- Dispose of the vehicle only in accordance with the regulations!
Removing the steering wheel. Models equipped with an airbag
Removing the steering wheel of a vehicle equipped with an airbag should only be recommended by an experienced mechanic. Those who are not confident in their abilities should contact the workshop.
Be sure to follow the safety requirements (see previous text).
Disconnect the battery cable leading to «mass».
Unclip the left and right airbag module at the rear of the steering wheel using the T30 key.
Lay the airbag unit back.
Disconnect the safety clip of the airbag unit plug.
Disconnect the plug from the airbag unit.
Lay down the airbag unit so that the Audi rings on the unit are visible.
Remove the top section of the steering column trim. To do this, unscrew the two cross-head screws on the bottom of the steering column trim.
Pull the plug connection for the airbag unit wiring inlet from the lower trim panel. To do this, use a screwdriver to slightly press the fastening lug in the middle of the lower part of the plug and pull out the connection.
Disconnect plug connection.
Remove steering wheel as described for models without airbag.
When installing, in addition to the instructions for models without airbag, note the following: After installing the steering wheel and tightening the bolts by hand, screw in the two mounting bolts of the airbag unit.
Then tighten the right one first (along the car) bolt torque 6 Nm.
Lastly, tighten the left bolt to 6 Nm.
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