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.
2000 Mercedes Benz C43FACTORY OEM SERVICE PROCEDURE
Control Units
CONTROL UNITS LOCATION
| Component | Component Location |
|---|---|
| ABS Control Module | At right rear of engine compartment. |
| AIR Control Module | At front of left front wheelwell. |
| ASR/SPS Control Module | At right rear of engine compartment. |
| ATA Control Module | At front of luggage compartment. |
| BAS Control Module | Next to brake booster. |
| CF Control Module | At right rear of luggage compartment, under frame rail. See Figure . |
| DAS Control Module | Behind instrument cluster. |
| Daytime Running Lamp Control Module | Under left side of dash. |
| EA/CC/ISC Control Module | At right rear of engine compartment. |
| Electric Cooling Fan Control Module | In left front wheelwell, on frame rail. |
| Electronic Ignition Switch Control Module | At right side of steering column. |
| Engine Control Module (ME-SFI) | At right rear of engine compartment. See Figure . |
| Navigation Processor (APS) | In trunk, in spare wheel housing. |
| PSE Control Module | At right rear of luggage compartment. See Figure . |
| RCL Control Module | At right front of luggage compartment. See Figure . |
| Seat Belt Warning Module | At left kick panel. |
| SRS Control Module | Under center console, forward of shifter, bolted to transmission tunnel. See Figure . |
| Transmission Control Module | In right front footwell, under carpet. 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.