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 MANUALSAUDI1999A6 BASEREPAIR AND DIAGNOSISQUICK LOOKUPSELECTRICAL COMPONENT LOCATIONSELECTRICAL COMPONENT LOCATORCONTROL UNITS
1999 Audi A6 Base
Control Units
1999 Audi A6 BaseSECTION Control Units
CONTROL UNITS
| Component | Component Location |
|---|---|
| ABS Control Module | Integral with ABS hydraulic unit, left side of engine compartment. |
| ABS Hydraulic Unit | Left side of engine compartment. |
| Air Bag Control Module | Below front of center console. See Figure. |
| Central Locking Control Module | Below driver's seat & carpet. See Figure. |
| Cruise Control Module | Behind glove box. See Figure. |
| Engine Control Module (ECM) | In electronic box, left side of fresh air plenum. See Figure. |
| Fresh Air Blower Control Module | Behind right side of dash. See Figure. |
| Headlight Adjustment System Control Module | On left side of luggage compartment. See Figure. |
| Light Control Module | On 13-fold relay panel. See Figure. |
| Mirror Fold-Away Control Module | On 13-fold relay panel. See Figure. |
| Multifunction Steering Wheel Module | On 13-fold relay panel. See Figure. |
| Rear Window Shade Control Module | On left side of luggage compartment. See Figure. |
| Servotronic Control Module | On 13-fold relay panel. See Figure. |
| Throttle Valve Control Module | On throttle body. See Figure. |
| Transmission Control Module (TCM) | Under right front seat & carpet. See Figure. |
| Ultra-Sound Sensor Control Module | Mounted below left "C" pillar. See Figure. |
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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.