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 SL55FACTORY OEM SERVICE PROCEDURE
Electrical Component Locator: Splices
SPLICES LOCATION
| Component | Location |
|---|---|
| Z3/4 | Under front of center console. |
| Z3/12 | Right front of trunk, inside wiring harness, beside tank. |
| Z3/29 | Left side of engine. |
| Z3/29z1 | Left side of engine. |
| Z3/29z2 | Top front of engine. |
| Z3/42 | Stowage compartment, behind driver seat. |
| Z4/3 | Under rear of center console. |
| Z4/4 | Left front footwell. |
| Z4/5 | Front of roof. |
| Z4/7 | Stowage compartment, behind passenger seat. |
| Z5z2 | Right side of engine. |
| Z6 | Right side of engine. |
| Z6z1 | Right side of engine. |
| Z6z2 | Left rear of engine. |
| Z6/1 | Left seat, inside backrest. |
| Z6/2 | Right seat, inside backrest. |
| Z6/4 | Left rear of engine compartment. |
| Z6/8 | Left rear of engine compartment. |
| Z6/26 (5.5L S/C V8) | Left rear of engine compartment. |
| Z6/26 (5.5L V8) | Top right side of engine. |
| Z6/27 | Left rear of engine compartment. |
| Z6/33z1 | Left front footwell. |
| Z6/33z2 | Left front footwell. |
| Z6/92 | Right side of trunk lid. |
| Z7/19 | Left rear interior. |
| Z7/35z1 (5.5L S/C V8) | Top left rear of engine. |
| Z7/35z1 (5.5L V8) | Top right side of engine. |
| Z7/35z2 (5.5L S/C V8) | Top front of engine. |
| Z7/35z2 (5.5L V8) | Top left rear of engine. |
| Z7/35 (5.5L S/C V8) | Left rear of engine. |
| Z7/35 (5.5L V8) | Right side of engine. |
| Z7/36z1 (5.5L S/C V8) | Top left side of engine. |
| Z7/36z1 (5.5L V8) | Top right side of engine. |
| Z7/36z2 | Top left side of engine. |
| Z7/36 (5.5L S/C V8) | Top left side of engine. |
| Z7/36 (5.5L V8) | Top right side of engine. |
| Z7/38 | Top right side of engine. |
| Z7/38z1 | Top right side of engine. |
| Z7/38z2 (V12) | Top left side of engine. |
| Z7/38z2 (5.5L V8) | Rear of engine. |
| Z7/39 | Rear of engine. |
| Z7/40 | Stowage compartment, behind passenger seat. |
| Z7/41 | Right rear of engine. |
| Z7/43 | Top right side of engine. |
| Z7/43z1 | Right rear of engine. |
| Z7/43z2 | Right rear of engine. |
| Z7/44 | Rear of engine. |
| Z7/49 | Inside wiring harness, left of tank. |
| Z9 | Stowage compartment, behind passenger seat. |
| Z10 | Left front footwell. |
| Z11 | Left front footwell. |
| Z12 | Left front footwell. |
| Z13 | Left front footwell. |
| Z14 | Under rear of center console. |
| Z15 | Under rear of center console. |
| Z24 | Right rear of engine compartment. |
| Z28/1 | Left rear interior. |
| Z28/2 | Left rear interior. |
| Z28/25 | Stowage compartment, behind driver seat. |
| Z28/26 | Stowage compartment, behind driver seat. |
| Z28/35 | Inside wiring harness, left of tank. |
| Z36/1 | Left rear of trunk. |
| Z36/2 | Left rear of trunk. |
| Z36/3 | Behind left side of front bumper. |
| Z36/4 | Behind left side of front bumper. |
| Z50/1 | Right rear of engine compartment. |
| Z53/9 | Under front of center console. |
| Z61/1 | Left seat, inside backrest. |
| Z61/2 | Right seat, inside backrest. |
| Z61/8 | Left seat, inside backrest. |
| Z61/9 | Right seat, inside backrest. |
| Z61/10 | Left seat, inside backrest. |
| Z61/11 | Right seat, inside backrest. |
| Z113 | Right rear of engine compartment. |
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.