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.
2002 Mercedes Benz S430FACTORY OEM SERVICE PROCEDURE
Control Units
CONTROL UNITS LOCATION
| Component | Location |
|---|---|
| AB Control Module | In center console. |
| Active Body Control (ABC) Control Module | Left rear of engine compartment. |
| Electronic Selector Lever Control Module | Under center console, at base of selector lever assembly. |
| Electronic Stepper Motor Control Module | In center console. |
| Engine Control Module (ME-SFI) | Right rear of engine compartment. See Figure. |
| ETC Control Module | Right rear of engine compartment. |
| Left Front Door Control Module | In left front door. |
| Left Front ESA Control Module (With Memory) | Under left front seat. |
| Left Front SAM Control Module | In fuse/relay box, left side. See Figure. |
| Pneumatic Suspension With ADS Control Module | In left fuse/relay box. |
| PSE Control Module | Left side of trunk. See Figure. |
| Rear A/C Electronic Blower Regulator | In rear of center console. |
| Rear Multi-Contour Backrest Control Module | In driver's backrest. |
| Rear SAM Control Module | Under right rear seat. See Figure. |
| Right Front Door Control Module | In right front door. |
| Right Front ESA Control Module (With Memory) | Under right front seat. |
| Right Front SAM Control Module | In fuse/relay box, right side. See Figure. |
| Right Rear Door Control Module | In right rear door. |
| Roof Control Unit Control Module | Center front of roof. |
| Steering Column Module | At top of steering column. |
| Suction Cooling Fan Control Module | Behind right front bumper. |
| Traction System Hydraulic Unit | Left front 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.