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.
1987 Audi 5000 CS, StandardFACTORY OEM SERVICE PROCEDURE
Control Units
CONTROL UNITS LOCATION
| Component | Location |
|---|---|
| ABS Control Unit | Under left rear passenger's seat. |
| A/C Blower Control Unit | On right side of A/C evaporator housing. |
| A/C Control Unit | In center of dash. |
| A/C Programmer Control Unit | Behind glove box. See Figure . |
| Auto-Check/Main Control Unit | Under right side of center console. See Figure . |
| Automatic Seat Control Unit | Under driver's seat. |
| Cruise Control Unit | Under left side of dash. See Figure . |
| Electronic Control Unit (ECU) | Behind right kick panel. See Figure . |
| Front Head Light Control Unit | Under left side of dash. |
| Ignition Control Unit | On left kick panel. |
| On-Board Computer Control Module | Built into instrument cluster. |
| Taillight Control Unit | On left side of trunk, near antenna. |
Factory Service Tools
Use the Manual With the Right Hardware
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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.