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 E55FACTORY OEM SERVICE PROCEDURE
Control Units
CONTROL UNITS
| Component | Component Location |
|---|---|
| AIR Control Module | On left front of engine compartment. See Figure . |
| ASR/ETS/ESP Hydraulic Control Module | On left front of engine compartment. See Figure . |
| Combination Control Module | In module box, on right rear of engine compartment. See Figure . |
| DAS Control Module | Behind left side of dash. See Figure . |
| Diagnostic Module (OBD II) | On left rear corner of engine compartment. See Figure . |
| EA/CC/ISC Control Module | On front passenger's foot plate. |
| Engine Control Module (ME-SFI) | In module box, on right rear of engine compartment. See Figure . |
| ESP/SPS Control Module | In module box, on right rear of engine compartment. See Figure . |
| ETS/SPS Control Module | In module box, on right rear of engine compartment. See Figure . |
| Garage Door Opener Control Module | In left sun visor. |
| Headlight Range Adjustment Control Module | Under left side of rear seat. See Figure . |
| Illumination Control Module | Behind left side of dash, part of headlight switch. |
| In-Dash Controller | In middle of dash. See Figure . |
| Kickdown Cut-Out Relay Module | On front passenger's foot plate. See Figure . |
| Left Front ESA Control Module | Below left front seat. See Figure . |
| PSE Control Module | Below right rear seat. See Figure . |
| Pulse Module | On left rear of engine compartment. See Figure . |
| RCL Control Module | On front passenger's foot plate. See Figure . |
| Relay Module | In module box, on right rear of engine compartment. See Figure . |
| Right Front ESA Control Module | Below right front seat. See Figure . |
| SRS Control Module | In front of transmission shift lever. See Figure . |
| Transmission Control Module | In module box, on right rear of engine compartment. 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.