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 C280FACTORY OEM SERVICE PROCEDURE
Electrical Component Locator: Splices
SPLICES
| Component | Component Location |
|---|---|
| Z2 | Center rear of engine compartment, in main harness along firewall, 500 mm from S11. |
| Z3 | Rear of engine compartment, in wiring harness on firewall. |
| Z3/1 | Left center of dash, near windshield. |
| Z3/15 | In wiring harness, near center console. |
| Z3/26 | In wiring harness, near center console. |
| Z3/27 | Left component compartment. |
| Z3/29 | In engine harness, center rear of engine compartment. |
| Z4/4 | In right component compartment. |
| Z6/1 | Left front door rubber boot, between door & door jamb. |
| Z6/16 | Left center of dash, at base of windshield |
| Z6/18 | Right component compartment, near engine control module. |
| Z7/1 | In left harness crosstray, on left of center console. |
| Z7/24 | At circuit 87 connector sleeve, (feed from overvoltage protection relay module K1). |
| Z7/25 | Approximately, 550 mm from kickdown cut-out relay module connector. |
| Z7/29 | At circuit 87 connector sleeve, (feed from overvoltage protection relay module K1). |
| Z7/35 | In engine harness, center rear of engine compartment. |
| Z9 | In engine harness, center rear of engine compartment. |
| Z10 | In bottom left side of luggage compartment, in CTEL transmitter/receiver connector. |
| Z11 | In bottom left side of luggage compartment, in CTEL transmitter/receiver connector. |
| Z21/2 | In right harness crosstray, on lower right of console. |
| Z21/5 | Right front door sill. |
| Z21/6 | Right front door sill. |
| Z23 | In main harness, between EA/CC/ISC control module & ASR brake fluid level switch. |
| Z23/2 | In main harness, between EA/CC/ISC control module & ASR brake fluid level switch. |
| Z28/1 | At left rear speaker connector. |
| Z28/5 | In wiring tray, between crosspiece & left front footwell. |
| Z28/6 | In wiring tray, between crosspiece & left front footwell. |
| Z28/7 | In wiring tray, between crosspiece & left front footwell. |
| Z28/8 | In wiring tray, between crosspiece & left front footwell. |
| Z28/10 | In bottom left side of luggage compartment, in CTEL transmitter/receiver connector. |
| Z30/1 | Behind instrument cluster, at sleeve to left turn signal connector. |
| Z30/2 | Behind instrument cluster, at sleeve to right turn signal connector. |
| Z36/3 | In engine compartment harness, behind left front bumper. |
| Z36/4 | In engine compartment harness, behind left front bumper. |
| Z36/8 | Behind instrument cluster. |
| Z37/2 | In right engine compartment harness, under right fuse & relay box. |
| Z37/3 | In right engine compartment harness, under right fuse & relay box. |
| Z81 | In left harness tray, at left rear of center console. |
| Z81/4 | In left harness crosstray, on left of center console. |
| Z84/1 | In main harness, between EA/CC/ISC control module & ASR brake fluid level switch. |
| Z84/2 | In main harness, between EA/CC/ISC control module & ASR brake fluid level switch. |
| Z87/15 | Behind radio. |
| Z96 | Right component compartment, in control module connector plug. |
| Z99 | In main harness, between EA/CC/ISC control module & ASR brake fluid level switch. |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
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.