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.
2003 Mercedes Benz ML320FACTORY OEM SERVICE PROCEDURE
Electrical Component Locator: Grounds
GROUNDS LOCATION
| Component | Location |
|---|---|
| W2 | Behind right headlight. See Figure . |
| W2/1 | Behind right headlight. See Figure . |
| W6 | Behind trim, at left rear of cargo area. See Figure . |
| W7 | Behind trim, at right rear of cargo area. See Figure . |
| W8 | Behind trim, on tailgate. See Figure . |
| W9 | Behind right headlight. |
| W11/3 | At top center front of engine. See Figure . |
| W16 | At left rear of engine compartment. See Figure . |
| W16/4 | At right rear of engine compartment. See Figure . |
| W16/6 | At right rear of engine compartment. See Figure . |
| W18 | Under left front seat, under carpet. See Figure . |
| W19 | Under right front seat, under carpet. See Figure . |
| W26 | Under center console, on SRS mounting bolt. See Figure . |
| W29/2 | At right kick panel. |
| W51 | On right front body frame. |
| W51/2 | Beneath vehicle, at right rear of engine, near M1. |
| W51/3 | Beneath vehicle, at right rear of engine, near M1. |
| W51/4 | Beneath vehicle, at rear of right front wheel housing. |
| W51/5 | Beneath vehicle, at rear of right front wheel housing. |
| W51/6 | Beneath vehicle, at front of right rear wheel housing. |
| W51/7 | Beneath vehicle, at front of right rear wheel housing. |
| W51/8 | Beneath vehicle, on muffler, forward of right rear wheel. |
| W51/9 | Beneath vehicle, on muffler, forward of right rear wheel. |
| W51/10 | On left front firewall. |
| W51/11 | On left front engine firewall. |
| W51/13 | Left front wheel well, at bumper. |
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.