Here is the list of fuse designations for the Mercedes-Benz  C-Class. It is a combined list of all the fuses, including pre-facelift and facelift models through 2007.  Scroll to the bottom of the list if you are wondering where the fuses are on the C-Class. This guide covers W203 C-Class models from 2001 through 2007. Fuse assignments can vary by model year, engine, body style, market, and installed equipment. Check the fuse allocation chart supplied with your vehicle before replacing a fuse.
- Fuses 21 through 42 are located on the driver’s side of the dashboard.

- Fuses 1 through 20 are located in the trunk. Â

- Fuses 43-63 are located under the hood, near the hood hinge on the driver’s side.

Take a look at the pictures for the exact location.
| ABS | 56, 59, 60,62 |
| Airbag Warning Lamps | 41,42,45,49 |
| Active Head Restraint | 7 |
| Airbag / Side Airbag Control Unit | 45, 49 |
| Air Conditioner SE | 41,51 |
| Anti Theft Alarm | 8,9,41 |
| Automatic Heater System | 41 |
| Auxiliary Heater SE | 35 |
| Blower Motor (Heater / AC) | 30,41 |
| Brake Lights | 62 |
| Central Locking | 21, 22,32,57 |
| Central Locking Interior Switch | 41 |
| Cigar Lighter | 47 |
| COMAND | 64 |
| Convenience Locking | 8,9,21,22,32,33 |
| Courtesy Lights | 21,22 |
| Diagnostic Socket | 62 |
| Dipped Beam | 62,63 |
| Dome Lights / Interior Lights | 3,9 |
| E-Call / TeleAid | 40,44 |
| Electronic Stability Program ESP | 55,56,57,59,60,62 |
| Engine Electronics | 48,53,54 |
| Engine Emergency Stop | 53,54 |
| Engine Fan | 51 |
| Engine Residual Heat System | 30,41,51 |
| Fanfare | 43 |
| Fog Lamps | Electronic |
| Fog Tail Light | electronic |
| Fuel Filler Flap Unlocking | 15 |
| Fuel Pump | 4 |
| Garage Door Opener | 9 |
| Glove Compartment Light | 47 |
| Hazard Warning Flashers | 41 |
| Headlamp Flasher | Electronic |
| Headlamp Range Adjustment | 51 |
| Headlamp Washer System | 63 |
| Heated Rear Window | 10,41 |
| High Beam Indicator Lamp | electronic |
| Instrument Cluster | 42 |
| Language Control System | 13,16 |
| License Plate Illumination | Electronic |
| Locking Check Back | Electronic |
| Low Beam | 62,63 |
| Main Beam, M.B. Indicator Lamp | Electronic |
| Makeup Mirror | 9 |
| Mirror Adjustment | 21,22,63 |
| Automatic Dimming Mirror | 9,21 |
| Mirror Heater | 21,22 |
| Mirror Folding Feature | 21,22,63 |
| Multicontour Backrest | 13,19 |
| Multifunction Steering Wheel | Electronic |
| Navigation System | 64 |
| Number Plate Light | Electronic |
| Parking Lamps Tail Lamps | Electronic |
| Parktronic System | 13,41 |
| Power Socket, Boot | 12,20 |
| Front Power Windows | 21,22 |
| Rear Power Windows | 21,32,33 |
| Radio | 64 or 36 |
| Rain Sensor | 9 |
| Rear Fog Light | Electronic |
| Rear Head Release | 41 |
| Rear Windscreen Wash System | 14,41 |
| Remote Boot Trunk Release | 8,21 |
| Reversing Lamps | Electronic |
| Driver Seat Adjustment | 2,21,27, 29 coupe |
| Passenger Seat Adjustment | 1,22,38, 34 coupe |
| Seat Heater | 25,41 |
| Sound System | 26 |
| Start Enable | 31,52,57 |
| Steering Lock | 31 |
| Steering Wheel Adjustment | 2,21,27, Coupe 29 |
| Rear Window Sun Blind | 20,41 |
| Switch Illumination | 9,21,22,32,33,41,50 |
| Tele Aid/E Call | 40,44 |
| Telephone Systems | 13,16,40,44,36 |
| Television | 3 |
| Sunroof Sliding Roof | 9 |
| Trailer Lights | 17 |
| Trailer Power Supply | 18 |
| Transmission Electronics | 55,58,61 |
| Turn Signal Indicator Lamp | Electronic |
| Water Pump AMG | 5 |
| Windshield Washer Pump | Electronic |
| Windscreen Wipers | 46 |
FUSES AND THE CORRESPONDING COLOR
Ampere – Color
| 5 beige |
| 7.5 brown |
| 10 red |
| 15 blue |
| 20 yellow |
| 25 white |
| 30 green |
| 40 amber |
| 50 red |
| 60 blue |



My trunk motor went out so i got the replaycemnt the only thing is the wiring how to connect it back.
Really useful and exactly what one requires when looking to change a fuse.
Wow,thank you so much..I was looking every where for this. Just wondering do you have a relay diagram,need to find ac relay..
I have a 2005 c230k