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 MANUALSBMW1992735ILREPAIR AND DIAGNOSIS (SINGLE PAGE)ELECTRICALCOMPONENT LOCATIONSELECTRICAL COMPONENT LOCATORCONTROL UNITS/MODULES
1992 BMW 735iL
Control Units/Modules
1992 BMW 735iLSECTION Control Units/Modules
CONTROL UNITS/MODULES LOCATION
| Component | Location |
|---|---|
| ABS/ASC Control Unit | In electrical box, behind right front shock tower. |
| Air Bag Diagnostic Module | Behind left side of dash, left of steering column. |
| Anti-Theft Module | Below left side of dash. |
| Automatic A/C Control Unit | Behind front footwell, ahead of plenum. |
| Check Control Module | On front fuse/relay block. See Figure . |
| Crash Control Unit | On front fuse/relay block. See Figure . |
| Cruise Control Module | In electrical box, behind right front shock tower. |
| EDC Electronic Control Unit | Under right side of rear seat, near battery. |
| Electric Power Protection Relay | On rear fuse/relay block. |
| Electronic Trans. Control Unit | Behind right kick panel. |
| Final Stage Unit | On left side of right footwell. |
| General Module | On rear fuse/relay block. See Figure . |
| Headrest Control Unit (Rear) | On rear fuse/relay block. See Figure . |
| Headlight/Foglight Module | On auxiliary relay block. See Figure . |
| Infrared Locking Control Unit | On rear fuse/relay block. See Figure . |
| Light Control Module | On front fuse/relay block. See Figure . |
| Lock Sensor Control Unit | Behind left kick panel, left of driver's footrest. |
| Motronic Control Unit (DME) | In electrical box, behind right front shock tower. |
| On-Board Computer | Behind center of dash, right of radio. |
| Relay Module | On rear fuse/relay block. See Figure . |
| Seat/Mirror/Steering Column Memory Control Module | Under driver's seat. |
| Servotronic Control Unit | Behind left kick panel, left of driver's footrest. |
| Wheel Camber Control Unit | Under car, above right side half-shaft. |
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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.