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 DIAGNOSISACCESSORIES AND OPTIONAL EQUIPMENTANTITHEFT AND ALARM SYSTEMSULTRASONIC SENSORTESTING AND INSPECTIONINTERIOR MONITORING, FUNCTIONAL CHECK
1998 Audi A8 Sedan (4D2) V8-3.7L (AEW)
Interior Monitoring, Functional Check
1998 Audi A8 Sedan (4D2) V8-3.7L (AEW)SECTION Interior Monitoring, Functional Check
- Cover all ultrasonic interior monitoring sensors with masking tape.
- Open all side windows approximately 10 cm (4 inches).
- Lock vehicle, thereby activating anti-theft alarm and interior monitoring systems.
- Wait 30 seconds, until LED in rear fog light switch blinks slowly.
- Extend hand through one window opening and remove tape from interior monitoring sensor.
If interior monitor is working properly, alarm will sound.
- Unlock vehicle to disable alarm.
- Carry out same procedure on each remaining interior monitoring sensor.
- Make sure tape is reapplied to each sensor that has been checked.
- Open all side windows approximately 10 cm (4 inches).
- Lock vehicle, thereby activating anti-theft alarm and interior monitoring systems.
- Wait 30 seconds, until LED in rear fog light switch blinks slowly.
- Extend hand through one window opening and remove tape from interior monitoring sensor.
If interior monitor is working properly, alarm will sound.
- Unlock vehicle to disable alarm.
- Carry out same procedure on each remaining interior monitoring sensor.
- Make sure tape is reapplied to each sensor that has been checked.
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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.