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.
2001 Audi S8FACTORY OEM SERVICE PROCEDURE
Control Units
CONTROL UNITS LOCATION
| Component | Component Location |
|---|---|
| ABS Control Module (W/EDL) | Below left side of dash. See Figure . |
| Air Bag Control Module | Below center of dash, on transmission tunnel. See Figure . |
| Antenna Selection Control Module | Behind lower "C" pillar trim. |
| Central Locking/Alarm System/Interior Light Delay Module | At left side of luggage compartment, near wheelwell. See Figure . |
| Cruise Control Module | In plenum chamber E-box, at right rear of engine compartment. |
| Fresh Air Blower Control Module | At right rear of engine compartment, in fresh air intake. |
| Front Lamp Control Module | On right front footwell E-box relay panel. |
| Front/Rear Fog Light Control Module | On right front footwell E-box relay panel. |
| Headlight Beam Adjusting Control Module | At base of right "B" pillar, behind trim. |
| High Intensity Gas Discharge Lamp Control Module (Left/Right) | Behind respective headlight assembly. |
| Lamp Control Module | On right front footwell E-box relay panel. |
| Memory Seat Control Module | On bottom of left front seat. |
| Mirror Fold-Away Function Control Module | On right front footwell E-box relay panel. |
| Mirror Memory Control Module | At base of left "B" pillar, behind trim. See Figure . |
| Motronic Engine Control Module | In plenum chamber E-box. See Figure . |
| Multifunction Steering Wheel Control Module | On relay panel. See Figure . |
| Multifunction Steering Wheel Interface | Behind instrument cluster. |
| Operating Electronics & Telephone Control Module | Below rear of center console. |
| Parking Aid Control Module | Below CD changer unit on left side of luggage compartment. See Figure . |
| Power Sunroof Control Module | Above interior light assembly, forward of sunroof. |
| Power Window Control Module (4) | Integral with window motor, in respective door. |
| Rear Window Shade Control Module | Below right side of rear parcel shelf. See Figure . |
| Servotronic Control Module | On right front footwell E-box relay panel. See Figure . |
| Speech Input Control Module | At left side of luggage compartment, in storage compartment. |
| Steering Column/Belt Height Control Module | Below left front seat. See Figure . |
| Telephone/Telematic Control Module | At front of luggage compartment, on bottom of parcel shelf. |
| Transmission Control Module | In plenum chamber E-box. See Figure . |
| Ultrasound Control Module | At left side of luggage compartment. See Figure . |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.