Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSAUDI1998A8 SEDAN (4D2) V8-3.7L (AEW)REPAIR AND DIAGNOSISLIGHTING AND HORNSTURN SIGNALSCOMBINATION SWITCHSERVICE AND REPAIR
1998 Audi A8 Sedan (4D2) V8-3.7L (AEW)
Combination Switch: Service and Repair
1998 Audi A8 Sedan (4D2) V8-3.7L (AEW)SECTION Service and Repair
WARNING!
- Airbag system components must only be checked, removed, installed and/or repaired by qualified Service Department personnel
- Before starting work on any parts of the airbag system, disconnect the battery Ground (GND) strap. When reconnecting the Ground strap, the passenger compartment must not be occupied.
- Always refer to airbag system safety precautions.
CAUTION!
Before working on the electrical system:
- Determine the correct coding for the anti-theft radio.
- Switch the ignition off.
- Disconnect the battery Ground (GND) strap.
Removing
- Disconnect battery Ground strap.
- Turn front wheels and steering wheel to straight-ahead position.
- Pull adjustable steering column out as far as it will go and set to lowest position.
- Using Torx: T30 bit, remove screws for airbag unit from left and right sides of back of steering wheel.
- Tightening torque: 7 Nm (62 in.lb.)
- Carefully pivot airbag unit toward front.
- Disconnect harness connector from rear of airbag unit and place airbag unit facing up.
- Remove two screws -8- and carefully pull out upper half of steering column trim -1-.
- Disconnect electrical connector for spiral spring.
- Remove nut -12- (secures steering wheel-11-) and remove steering wheel.
- Tightening torque: 50 Nm (37 ft.lb.)
CAUTION: When removing the steering wheel, the spiral spring must not be unwound from its middle position.
- Remove screws -5- and -6- and Torx screw -9-.
- Remove steering column trim -7-.
- Disconnect electrical connector for steering column height adjuster.
- Remove socket head screw for clamp -2- until steering column switches are loosened.
- Carefully disconnect electrical connector from steering column switches.
- Remove steering column switches from steering column.
Installing
- Install steering column switches -2- and hand-tighten socket head screw -3-.
- Install steering wheel -1- and adjust distance -a- to 3 mm (0.118 in.).
- Remove steering wheel.
- Finish installation in reverse order of removal.
- Airbag system components must only be checked, removed, installed and/or repaired by qualified Service Department personnel
- Before starting work on any parts of the airbag system, disconnect the battery Ground (GND) strap. When reconnecting the Ground strap, the passenger compartment must not be occupied.
- Always refer to airbag system safety precautions.
CAUTION!
Before working on the electrical system:
- Determine the correct coding for the anti-theft radio.
- Switch the ignition off.
- Disconnect the battery Ground (GND) strap.
Removing
- Disconnect battery Ground strap.
- Turn front wheels and steering wheel to straight-ahead position.
- Pull adjustable steering column out as far as it will go and set to lowest position.
- Using Torx: T30 bit, remove screws for airbag unit from left and right sides of back of steering wheel.
- Tightening torque: 7 Nm (62 in.lb.)
- Carefully pivot airbag unit toward front.
- Disconnect harness connector from rear of airbag unit and place airbag unit facing up.
- Remove two screws -8- and carefully pull out upper half of steering column trim -1-.
- Disconnect electrical connector for spiral spring.
- Remove nut -12- (secures steering wheel-11-) and remove steering wheel.
- Tightening torque: 50 Nm (37 ft.lb.)
CAUTION: When removing the steering wheel, the spiral spring must not be unwound from its middle position.
- Remove screws -5- and -6- and Torx screw -9-.
- Remove steering column trim -7-.
- Disconnect electrical connector for steering column height adjuster.
- Remove socket head screw for clamp -2- until steering column switches are loosened.
- Carefully disconnect electrical connector from steering column switches.
- Remove steering column switches from steering column.
Installing
- Install steering column switches -2- and hand-tighten socket head screw -3-.
- Install steering wheel -1- and adjust distance -a- to 3 mm (0.118 in.).
- Remove steering wheel.
- Finish installation in reverse order of removal.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.