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Mercedes C Class w203 c240 Automatic 2003 Fuse Box Diagram

avatar Jonathan Yarden Mar 25, 2021 · 5 min. read

In this article you will find a description of fuses and relays Mercedes-Benz, with photos of block diagrams and their locations. Highlighted the cigarette lighter fuse (as the most popular thing people look for).
Get tips on blown fuses, replacing a fuse, and more.

Description Fuse number
ABS 56,59,60,62
Airbag warning lamps 41,42,4549
Airbag/side airbag control unit 45,49
Air-conditioner (SE) 41,51
Anti-thef alarm (SE) 8,9,41
Automatic heater system 41
Auxiliary heater (SE) 35
Blower motor (heater/AC) 30,41
Breake lights 62
Central locking 21,22,32,33,57
Central locking – interior switch 41
Cigar lighter 47
Convenience locking 8,9,21,22,32,33,
Courtesy lights (SE) 21,22
Diagnostic socket 62
Dipped deam 62,63
Dome lights 3,9
E-Call/TeleAid (SE) 40,44
Electronic Stability Program 55,56,57,59,60,62
Engine electronics 48,53,54
Engine fan 51
Engine residual heat system (SE) 30,41,51
Fanfare 43
Fog lamps electronic
Fog tail light electronic
Fuel filter flap unlocking 15
Fuel pump 4
Garage door opener (SE) 9
Glove compartment light 47
Hazard warning flashers 41
Headlamp flasher electronic
Headlamp range adjust (SE) 51
Headlamp washer system (SE) 63
Heated rear window 10,41
High beam, high beam tell-tale electronic
Instrument cluster 42
Language control system (SE) 13,16
License plate illumination electronic
Locking check-back electronic
Low beam 62,63
Main beam, m. b. indic. lamp electronic
Make-up mirror (SE) 9
Mirror adjustment 21,22,63
Mirror automatic dimming (SE) 9,21
Mirror fold-in feature (SE) 21,22,63
Mirror heater 21,22
Multi-contour backrest (SA) 13,19
Multi-function steering wheel electronic
Navigation system (SE) 64
Number plate light electronic
Parking lamps/tail lamps electronic
Parktronic system (SE) 13,41
Power socket, boot (SE) 12
Power window, front 21,22
Power window, rear 21,32,33
Radio 64
Rain sensor (SE) 9
Rear fog light electronic
Rear head release 41
Rear windscreen wash system 14,41
Remote boot/trunk release 8,21
Reversing lamps electronic
Seat adjustment, driver 2,21,27,(29 sp.-coupe)
Seat adjustment, passenger 1,22,38,(34 sp.-coupe)
Seat heater (SE) 25,41
Sound system (SE) 26
Start enable 31,52,57
Steering lock 31
Steering wheel adjustment (SE) 2,21,27,(29 sp.-coupe)
Sun blind for rear window (SE) 20,41
Switch illumination 9,21,22,32,33,41,50
Tele Aid (SE)/E-Call 40,44
Telephone systems (SE)  13,16,40,44
Television (SE) 3
Tilting/sliding roof (SE) 9
Trailer lights (SE) 17
Trailer, power supply (SE) 18
Transmission electronics (SE) 55,58,61
Turn signal, t. s. indicator lamp electronic
Water pump (AMG-Kompressor) 5
Windscreen washer pump electronic
Windscreen wiper 46

Fuse rating

Fuse Number Ampere Colour
13,44,50,56,57,62,63 5 beige
3,5,8,16,40,42,45,49,51,(54 Diesel),55 7,5 brown
15,20,64 10 red
12,14,41,43,47,48,52,(53,54 gasoline),61 15 blue
4,17,18,19,31 20 yellow
9,26,37,(53 Diesel) 25 white
1,2,21,22,25,27,29,32,33,34,35,38 30 green
10,30,46,58,60,65 (Maxi) 40 amber
59 (Maxi) 50 red

Mercedes Class C w203 c240 Automatic – fuse box – luggage compartment

Mercedes Class C w203 c240 Automatic – fuse box – passenger compartment

Mercedes C Class w203 c240 Automatic – fuse box – engine compartment

WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

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