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.
2009 Audi A6 BaseFACTORY OEM SERVICE PROCEDURE
Control Units
CONTROL UNITS LOCATION
| Component | Location |
|---|---|
| ABS Control Module (S6) | Left side of engine compartment. See Figure. |
| Access/Start Control Module | Base of steering column. See Figure. |
| Airbag Control Module | Under front of center console. See Figure. |
| Comfort System Central Control Module (4) | Right side of luggage compartment. See Figure. |
| Coolant Fan Control (FC) Control Module (1) | On coolant fan. See Figure. |
| Coolant Fan Control (FC) Control Module 2 (16) | On coolant fan 2. See Figure. |
| Digital Sound System Control Module | Left rear of luggage compartment. See Figure. |
| Door Control Module (Driver's/Front Passenger's) | In respective front door. See Figure. |
| Door Control Module (Left/Right Rear) | In respective rear door. See Figure. |
| Electro-Mechanical Parking Brake Control Module (6) | Right side of luggage compartment. See Figure. |
| Energy Management Control Module | Near spare tire, at negative cable from battery. See Figure. |
| Engine Control Module (ECM) (Master) (5.2L) (1) | Right rear of engine compartment, in plenum. See Figure. |
| Engine Control Module (ECM) (Slave) (5.2L) (2) | Right rear of engine compartment, in plenum. See Figure. |
| Engine Control Module (ECM) (4.2L) (2) | In right plenum chamber. See Figure. |
| Front Information Display Control Head Control Module (1) | Above glove box. See Figure. |
| Fuel Pump (FP) Control Module | Under right front luggage compartment floor. See Figure. |
| Garage Door Opener Control Module | Under front bumper. See Figure. |
| Headlight Range Control Module (4) | Above glove box. See Figure. |
| High-Intensity Gas Discharge Lamp Control Modules (Gas-Discharge Headlights) | Bottom of headlight assemblies. See Figure. |
| Instrument Cluster Control Module | In instrument cluster. See Figure. |
| Level Control System Control Module (7) | Behind glove box. See Figure. |
| Memory Seat/Steering Column Adjustment Control Module | Under driver's seat. |
| Navigation System W/CD Drive Control Module (MMI) | Left rear of luggage compartment. See Figure. |
| Parking Aid Control Module (Avant) | Right rear floor of luggage compartment. |
| Parking Aid Control Module (Sedan) (1) | Right side of luggage compartment. See Figure. |
| Power Steering Control Module | On steering box. See Figure. |
| Power Sunroof Control Module | Center front of roof. See Figure. |
| Speech Input Control Module (MMI) | Left side of luggage compartment. See Figure. |
| Steering Column Electronic Systems Control Module | Bottom of steering column. See Figure. |
| Throttle Valve Control Module (Left) (5.2L) (2) | Top left side of engine. See Figure. |
| Throttle Valve Control Module (Right) (5.2L) (7) | Top right side of engine. See Figure. |
| Throttle Valve Control Module (3.2L) (10) | At rear of engine. See Figure. |
| Throttle Valve Control Module (4.2L) (7) | At rear of engine. See Figure. |
| Tire Pressure Monitoring Control Module (6) | Above glove box. See Figure. |
| Towing Recognition Control Module (2) | Right side of luggage compartment. See Figure. |
| Transmission Control Module (TCM) | Under transmission oil pan. See Figure. |
| Vehicle Electrical System Control Module | Under left side of dash. See Figure. |
| Vehicle Electrical System Control Module 2 (5) | Above glove box. See Figure. |
| Wiper Motor Control Module | In left plenum chamber. See Figure. |
Factory Service Tools
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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.
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