Mercedes-Benz C-klass W204 (2007–2014) fuse box location and fuses
Updated:
The Mercedes-Benz C-klass W204 has 3 fuse boxes. The first is here: left end of the dashboard behind a cover (open the driver's door). Below we show where to find the fuses for the cigarette lighter, ABS, engine control unit, fuel pump, lights and wipers, and what to do if a fuse keeps blowing.
Always verify against the label on the box lid. Fuse layouts change with year and equipment.
Where the fuse boxes are
- 1Left end of the dashboard behind a cover (open the driver's door)
- 2Engine bay, right side, in a box with a lid
- 3In the boot, behind the side panel or under the floor
The diagram shows roughly where the boxes are, not the fuse layout.
There's a paper chart in the dash-end box. The rear box is in the boot.
Common faults and fuses
Cigarette lighter / 12 V socket dead
Look for the socket or cigarette symbol, usually 15–20 A
ABS light on
ABS usually has two fuses: pump (large, 30–60 A) and control unit (5–15 A)
Related fault code: P0500
Engine won't start, dash lights on
The engine control unit (ECU) fuse and main relay are in the engine-bay box
Related fault code: P0606
Fuel pump silent at key-on
Look for the fuel pump symbol, usually 15–25 A, often with a relay
Related fault code: P0230
One headlight or tail light out
Bulb first, then fuse. On many cars a body control module drives the lights and there's no separate fuse
Wipers not working
The wiper fuse is large (20–30 A). If it's fine, the relay or motor is often to blame
How to check a fuse
Switch the ignition off and pull the fuse with the plastic puller. A blown fuse has a broken wire inside. Fit one of the same rating. If the new one blows straight away, there's a short in the wiring that needs diagnosing.
Data confidence: high
Want a definite answer?
Bring the car to our workshop in Estonia for diagnostics. We read the fault codes, test the sensors and tell you what is wrong. Repair price depends on the work involved, generally €45 per hour.