11.27.2021
Table of Contents
- In the engine compartment
- Fuse box
- Power fusible links
- In the passenger compartment
- In the luggage compartment
- All electrical equipment
The second generation of Mercedes C-Class (W203) appeared in 2000 and was produced in three bodies: sedan, station wagon and coupe. Sedan, which served as a basis for the C-Class family in this generation differs from its predecessor by a sporty design with dynamic silhouette. In this article we will understand in detail fuse box diagrams Mercedes C-Class W203 (2nd generation; C160, C180, C230, C240, C280, C320) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 years of manufacture.
Here you will find the locations and photos of the mounting blocks. Also, we will separately mark the fuses responsible for the cigarette lighter and the fuel pump.
In the engine compartment
Here there are two units responsible for the protection of the vehicle's electrical circuits.
Fuse box
It is located on the left side of the underhood.
General view.
Diagram | ||
---|---|---|
No. | Decoding | A |
F43a | Horn (beep) | 15 |
F43b | 15 | |
F44 | Telephone | 5 |
F45 | SRS electronic unit | 7.5 |
F46 | Windshield wiper motor relay | 40 |
F47 | Duffel box light bulb, front cigarette lighter fuse Mercedesw203 - C160, C180, C230, C240, C280, C320. | 15 |
F48 | Brake booster control unit (engine 112) | 15 |
F49 | SRS electronic unit | 7.5 |
F50 | Lighting control unit | 5 |
F51 | Air conditioning system, headlight corrector control unit, instrument panel, cooling fan motor | 7.5 |
F52 | Starter | 15 |
F53 | Engine management system (gasoline), multifunction control unit 2 | 15 |
F54 | Engine management system, air conditioning system (gasoline) | 7.5 |
F55 | Steering wheel position sensor, sequential manual transmission - with manual transmission | 7.5 |
F56 | Stop lamp switch (brake pedal position sensor), Electronic Stability Program (ESP) unit | 5 |
F57 | Steering wheel position sensor, electronic engine control module (ECM) (engine 112), electronic ignition switch control module | 5 |
F58 | Gearbox (sequential manual transmission) | 40 |
F59 | ESP (Vehicle Stability Support) | 50 |
F60 | 40 | |
F61 | Gearbox (sequential manual transmission) | 15 |
F62 | Diagnostic connector (DLC), lighting control unit, brake light switch (brake pedal position sensor) | 5 |
F63 | Lighting control unit | 5 |
F64 | Audio system | 10 |
F65 | Exhaust air pump motor (if installed) | 40 |
No. | Relay | |
I | Horn (beep) relay | |
K | Transmission (sequential manual transmission) | |
L | Windshield wiper motor relay (1st and 2nd speed) | |
M | Ignition circuit | |
N | Gearbox pump (sequential manual gearbox) | |
O | Exhaust air pump (112/113/271 engines) | |
P | Ignition circuit | |
Q | Windshield wiper motor (ON / OFF) | |
R | Engine management system | |
S | Starter |
Power fusible links
Next to the battery there is a panel consisting of power fuses.
Diagram | ||
---|---|---|
No. | Description | A |
1 | Fuse box in the passenger compartment | 125 |
2 | SAM control unit, rear | 200 |
3 | Additional fuse box | 125 |
4 | SAM control unit, front | 200 |
5 | Electric suction fan for engine and air conditioning with integrated controller | 125 |
Diesel engines: Preheat output stage | 125 | |
6 | SAM control unit, front | 60 |
In the passenger compartment
The fuse box is located in the left end of the instrument panel behind the plastic cover.
Access example.
Diagram | ||
---|---|---|
No. | Description | A |
F21 | left front door electrical system | 30 |
F22 | right front door electrical system | 30 |
F23 | Cigarette lighter fusemercedes w203 - C160, C180, C230, C240, C280, C320. | 15 |
F24 | - | |
F25 | Rear window heating | 10 |
F26 | Audio system output amplifier | 30 |
F27 | Front left power seat control unit | 30 |
F28 | - | |
F29 | Multifunctional control unit (taxi) | 30 |
F30 | Air conditioner / heater fan motor | 40 |
F31 | Ignition lock | 20 |
F32 | left rear door electrical system | 30 |
F33 | right rear door electrical system | 30 |
F34 | Telephone | 7.5 |
F35 | Additional heater | 30 |
F36 | - | |
F37 | Brake booster vacuum pump | 25 |
F38 | electric drive of the right front seat | 30 |
F39 | - | |
F40 | Multifunctional control unit (taxi) | 30 |
F41 | Air conditioning/heater, multifunction switch control unit (upper) - center console (^05/01) | 7.5 |
F42 | Instrument cluster | 7.5 |
In the luggage compartment
The unit is located on the left side of the luggage compartment.
General view of the Mercedes C-class W203 trunk fuse box.
Diagram | ||
---|---|---|
No. | Circuit breakers | A |
F1 | electric drive of the left front seat | 30 |
F2 | electric seat drive, right front. electric seat drive relay (front) | 30 |
F3 | tire pressure monitoring system, interior lamp (rear) | 7.5 |
F4 | Fuel pump fuse Mercedesw203 (gasoline engines) | 20 |
F5 | - | |
F6 | - | |
F7 | - | |
F8 | Antenna signal amplifier, anti-theft system horn, vehicle tilt sensor (anti-theft system) | 7.5 |
F9 | electric sunroof | 25 |
F10 | Heated rear window | 40 |
F11 | - | |
F12 | Accessory power connector (rear cigarette lighter) | 15 |
F13 | Lumbar support adjustment pump, local light bulbs (rear), telephone | 5 |
F14 | Rear window wiper motor (station wagon) | 10 |
F15 | Relay 1 of the fuel filler flap lock actuator | 10 |
F16 | Telephone | 20 |
F17 | Trailer control unit | 20 |
F18 | Trailer electrical connector | 20 |
F19 | Lumbar support adjustment pump | 20 |
F20 | Rear window curtain relay | 7.5 |
No. | Relay modules | |
A | Fuel pump relay | |
B | Ignition circuit | |
C | - | |
D | - | |
E | rear window heating | |
F | Ignition circuit | |
G | Fuel filler neck lock actuators 1 and 2 | |
H |
All electrical equipment
General layout of the electrical system in Mercedes W203.
1. Air conditioner/heater control module - in the heater control panel;
2. Air conditioner/heater fan control module - next to the fan motor;
3. Clean air sensor (air conditioning system);
4. Sunlight sensor (air conditioning system);
5. Antenna signal amplifier - 1, top of rear window;
7. Anti-theft system control module (integrated with the multifunction control unit) - left side of the luggage compartment;
8. Vehicle tilt sensor (anti-theft system) - left-hand side of the luggage compartment;
9. Anti-theft alarm system buzzer - behind the wheel arch lining;
10. Volume change sensors (anti-theft system);
11. Audio system module - in the navigation system;
12. Audio system output amplifier (if fitted) - right-hand side of the luggage compartment;
13. Auxiliary heater control unit;
14. Receiver for remote control of the auxiliary heater - under the panel (rear part of the luggage compartment);
15. BATTERY;
16. Brake booster vacuum pump control unit;
17. Central locking signal sensor (infrared) - in the driver's door handle;
18. Diagnostic connector (DLC);
19. Driver's door electrical control module;
20. Left rear door electrical control module;
21. Passenger door electrical control module;
22. Right rear door electrical control module;
23. Fuse/relay box, engine compartment 1;
24. Fuse box in the passenger compartment;
25. Fuse/relay box, luggage compartment;
26. Headlamp control module, left (xenon headlamp models);
27. Headlamp control module, right (xenon headlamp models);
28. Horns 1/2- behind the grille;
29. Ignition switch control module;
30. Electronic immobilizer control module - (combined with ignition switch control module);
31. Turn signal/emergency signaling relay - in multifunction control module 2;
32. Lighting control module - behind the headlight switch;
34. Multifunction control unit 1 - attached to the fuse/relay box in the engine compartment - functions: Interior lamps, head lights, horns, windshield wipers, air conditioning pressure control, headlight washers, coolant level, brake fluid level, thermometer, power door mirrors;
35. Multifunction control unit 2 - connected by fuse/relay box, luggage compartment-Functions: Central locking, fuel level, anti-theft system, emergency alarm, rear window heater, tail lights, trunk lid opening actuator, rear window wiper (station wagon);
36 Navigation system control module;
37. Ambient air temperature sensor;
38. Parking system control module under the panel in the rear luggage compartment;
39. Rain sensor - upper center section of the windshield;
40. Power seat control module (with memory), front left seat - under the seat;
41. Control module for the power seat (with memory), front right - under the seat;
42. Control module for seat heating, front. - in the switch unit;
43. Electronic control module for the transmission - sequential automatic transmission;
44. Side impact sensor, left - under the rear seat;
45. Side impact sensor, right - under the rear seat;
46 SRS electronic control unit;
47. Steering column electrical control module - behind the steering wheel;
48. Steering column lock control module - integrated in the ignition switch control unit;
49. Electric sunroof control module;
50. Body height sensor, front (models with xenon headlamps) - front stabilizer bar;
51. Body height sensor, rear (xenon headlamp models) - rear axle;
52. Telephone network connection module - under the panel at the rear of the luggage compartment;
53. Telephone interface control module - under the panel, at the rear of the luggage compartment;
54. Telephone transceiver - under the panel, at the rear of the luggage compartment;
55. Trailer electrical control module - under the panel, in the rear part of the luggage compartment;
56. Transmission control unit;
57. Gearshift control module - automatic transmission selector lever;
59. Voice activation system module - under the panel, in the rear part of the luggage compartment;
60. Fuse box, engine compartment 2.
Related fuse diagrams
Mercedes C-class (W202; 1993 - 2000) |
Mercedes C-class (W204; 2007 - 2014) |
Mercedes C-Class (W205, 2014 - 2021) |
Mercedes Gelandewagen (W463; 1989 - 2006) |
Mercedes Actros (MP2/MP3; 2003 - 2012) |
Mercedes E-Class (W211, 2002 - 2009) |
Comments
ايمن العكري
merci
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