Mercedes-Benz C-Class W203 (2000-2007) – fuse box diagram
Year of manufacture: 2001, 2001, 2002, 2003, 2004, 2005, 2006, 2007.
Lighter fuse (electrical outlet) in Mercedes C-Class W203 (2000-2007). Is fuse 47 in the fuse box in the engine compartment.
Starter fuse box
No. |
Description |
Amps [A] |
1 | Front passenger seat adjustment control unit with memory;
Passenger seat partial electric adjustment switch. |
30 |
2 | Front driver’s seat adjustment control with memory;
Driver’s seat partial electric adjustment switch. |
30 |
3 | Dome lamp;
Start light on the right; Left trunk light; STH radio remote control receiver. |
7.5 |
TV tuner (until 29.2.04)
TV Tuner (MOST) (since 1.4.04) |
20 | |
4 | Fuel pump relay (N10/2kA) | 20 |
5 | Valid for engine 112.961 (until 31.3.04):
Charge air cooler circulation pump; Valid without motor 112.961: Support Relay 2. |
20 |
6 | Reservation | 25 |
7 | Reserve courier 1 | 7.5 |
8 | Amplifier module, window antenna;
Emergency signal (H3); ATA tilt sensor [EDW]. |
7,5 |
9 | Control panel control unit
above. |
25 |
10 | Heated rear window | 40 |
11 | Reservation | 20 |
12 | Internal socket;
Refers to Model 203.0 US version (until 31.3.04): Electrical socket. |
15 |
13 | Pneumatic multi-contour seat pump
Control unit for the voice control system Rear dome lamp Rear dome lamp PTS warning indicator PTS control unit Version Japanese: VICS + ETC Supply voltage separation point. |
5 |
14 | Rear door wiper motor | 15 |
15 | Relay for changing the polarity of the plug
fuel supply 1; Relay for changing the polarity of the cap fuel tank cap 2. |
10 |
16 | Control unit for the voice control system | 20 |
17 | Trailer recognition control unit | 20 |
18 | Trailer Hitch Socket (13-pin) | 20 |
19 | Pneumatic multicontour pump with seat | 20 |
20 | Rear window blind relay
Valid for model 203.2/7 US version: Power socket |
15 |
Relay | ||
A | Fuel pump relay | |
B | Relay 2, terminal 15R | |
C | Support Relay 2 | |
D | Reserve courier 1 | |
E | Rear Window Defrost Relay | |
G | Relay 1, terminal 15R | |
G | Fill buffer relay, polarity change 1 | |
H | Fill buffer relay, polarity switch 2 |
Instrument panel fuse panel
No. |
Description |
Amps [A] |
21 | Front left door control unit | 30 |
22 | Front right door control unit | 30 |
23 | Until 30.11.04:
Central gate control unit. |
15 |
24 | CD player with switch
(in the glove box). |
7.5 |
25 | Upper control panel control unit | 30 |
26 | Sound amplifier | 25 |
27 | Front seat adjustment control unit
Driver’s side, with memory; Special multifunctional vehicle control unit (SVMCU [MSS]). |
30 |
28 | Reservation | 30 |
29 | Driver’s side front seat adjustment control unit, with memory;
Front seat adjustment control unit on the driver’s side, with memory; Multifunction control unit for special vehicle. |
30 |
30 | Heating system recirculation unit | 40 |
31 | CIS Controller [EZS];
Electric steering wheel lock command. |
20 |
32 | Left rear door control unit | 30 |
33 | Right tailgate control unit | 30 |
34 | Cell phone separation point;
until 31.5.01: Telephone transmitter/receiver and TELE AID; Telephone Transmitter and Receiver D2B; Telephone Interface D2B; E-net Compensator; until 31.5.01, Japanese version : Electronic call control unit. |
7.5 |
until 31.3.04 :
Front passenger seat adjustment control unit with memory; from 1.4.04: Front passenger side seat adjustment control unit with memory; until 31.5.03, Cab: Multifunction control unit for special vehicle; From 1.6.03, Taxi: multifunction control unit of a special vehicle; from 1.6.01, Police : multifunctional control unit of a special vehicle. |
15 | |
from 1.4.04 :
Front passenger seat adjustment control unit with memory; from 1.4.04Cab: Multifunction control unit for special vehicle. |
30 | |
35 | until 31.3.04 :
STH Heater |
30 |
from 1.4.04 :
STH Heater |
20 | |
36 | on 31.3.04, Police:
Internal take. |
30 |
Valid for engine (612.990) (until 29.2.04):
Charge air cooler circulation pump; As of 1.4.04, Japanese version: Audio gate control unit. |
15 | |
CTEL Universal Portable Interface Control Unit
(UPCI [UHI]) |
7.5 | |
37 | Charge air cooler circulation pump;
a 29.2.04 : Brake booster vacuum pump controller. |
25 |
38 | by 29.2.04:
Front passenger side seat adjustment control unit with memory; From 1.4.04, Police: Multifunctional control unit for special vehicle (SVMCU [MSS]). |
30 |
39 | Reservation | 30 |
40 | Passenger side front seat adjustment control unit with memory;
CTEL universal portable control unit (UPCI [UHI]); Cell phone separation point; Telephone interface; Power grid compensator; from 1.6.01, Standard MB Phone: Telephone transmitter and receiver, D2B as of 1.6.01, TELE AID: Telephone transmitter/receiver and TELE AID, D2B As of 1.6.01, Canadian vehicles: Through the trunk lid separation point/FFS [RBA] trunk lid emergency release switch i rear SAM control unit with module fuse and relay; American version: Through the luggage compartment lid partition/FFS [RBA] trunk lid emergency release switch i Rear SAM switchboard with fuse and relay module. From 1.4.04, Japanese version: Electronic call control unit. |
7.5 |
until 31.5.01:
Multifunction control unit for special vehicle |
30 | |
41 | Heating operation and control unit
until 31.5.01: AAC Control and Maintenance Unit [KLA] Comfort Control and maintenance unit AAC [kLa] |
7,5 |
as of 1.6.01:
AAC [KLA] control and maintenance unit; Comfort control and service unit AAC [KLA]. |
15 | |
42 | Instrument cluster | 7.5 |
Fuse box in engine compartment
No. |
Description |
Amps [A] |
43a | Horn relay | 15 |
43b | Horn relay | 15 |
44 | Telephone and TELE AID transmitter and receiver;
D2B telephone transmitter and receiver; D2B cell phone separation point. |
5 |
45 | Control unit for restraint systems | 7.5 |
46 | Wiper switch on/off relay;
Wiper speed relay 1 and 2. |
40 |
47 | Glove box lighting with switch;
Front cigarette lighter (with lighting). |
15 |
48 | Valid for engine 612.990 (until 31.3.04):
Vacuum pump control unit brake booster; Valid for engine 112 and engine 113: Bushing for circuit connector 15 (with fuse); Valid for engine 646, American version (until 31.3.04): Circuit 30 connector sleeve; Valid for engine 646 (from 1.4.04): O2 sensor in front of TC coupling [kAt]. |
15 |
49 | Control unit for restraint systems | 7.5 |
50 | Light Switch Module;
Applies to engine 612.990 Output phase shines (until 31.3.04); Hot foil mass flow sensor (1.4.04 a 30.11.04). |
5 |
51 | AAC with additional integrated control
fan motor Instrument cluster Refers to code (581) for comfort air conditioning auto: C-AAC [K-KLA] multifunction sensor C-AAC [K-KLA] Solar sensor (4 in total) Front left lamp unit Right Front Lamp Assembly Refers to AMG vehicles: Charge air cooler circulation pump Valid for model 203.0 (until 31.7.01): SPS control unit [PML] |
7.5 |
52 | Starter | 15 |
53 | Applies to diesel engines: | |
Starter Relay;
Rear SAM control unit with fuse and relay module; Applies to the 611/612/642/646 engine: CDI control unit. |
25 | |
Applies to gasoline engines:
Starter Relay; Rear SAM control unit with fuse and relay module; Refers to Engine 111/271/272: ME-SFI control unit [ME]; Refers to Engine 112/113: ME-SFI control unit [ME]; 87M1e circuit connector sleeve. |
15 | |
54 | Valid for engine 271.940:
ME-SFI control unit [ME]; Blowdown control valve (US version); Carbon tank shut-off valve activated carbon; Valid for engine 271.942: NOX (oxides of nitrogen) control unit; Valid for engine 642/646: CDI control unit; Valid for engine 642/646: 30 circuit connector bushing. |
15 |
Valid for 611/612 engines :
CDI control unit; Valid for engine 611/612 (until 30.11.04): Heating element of the ventilation line. |
7,5 | |
55 | Distronic steering angle sensor;
DTR control unit; Applies to the 722 gearbox: ETC control unit [EGS] (until 31.5.04); Electronic control unit for lever module gear shift; Electrical control unit (VGS); Applies to the 716 gearbox: Gear recognition switch; Automatic manual transmission control Gear unit. |
7.5 |
56 | ESP and BAS control unit;
Stop light switch. |
5 |
57 | Steering angle sensor (up to 31.5.02);
CIS control unit [EZS]; Steering column module (from 1.6.02); Valid for the 112/113 engine: ME-SFI control unit [ME]. |
5 |
58 | Valid for 716 transmissions:
SEQ Hydraulic pump |
40 |
59 | ESP and BAS control unit | 50 |
60 | ESP and BAS control unit | 40 |
61 | Valid for 716 transmissions:
Manual transmission control unit automatic |
15 |
62 | Data link connector;
Light switch module; Stop light switch. |
5 |
63 | Light Switch Module | 5 |
64 | Radio;
Radio and navigation unit; Operation, display, and Control unit COMAND. |
10 |
65 | Valid for engine 112/113:
Electric air pump. |
40 |
Relay | ||
J | Horn system relay | |
K | Terminal 87 relay, chassis | |
L | Wiper speed relay 1 and 2 | |
M | Terminal 15R Relay | |
N | SEQ Pump Control Relay [ASG]
(with automatic manual transmission Sequentronic (ASG)) |
|
O | Air pump relay (112, 113, 271 motors only) | |
P. | Terminal 15 relay | |
Q | Wiper On/Off Switch Relay | |
R | Relay 87, engine | |
S | Startup Relay |
Front box
![](https://fuse-box-diagrams.com/wp-content/uploads/2023/01/1674222608_908_Mercedes-Benz-C-Class-W203-2000-2007-fuse-box.jpg)
No. |
Description |
Amps [A] |
1 | Internal fuse box | 125 |
2 | Rear SAM control unit with fuse and
relay module |
200 |
3 | Additional fuse holder l,
Spare wheel recess. |
125 |
4 | SAM front control unit with fuse and
relay module |
200 |
5 | AC motor and electric suction fan with
integrated control. Applies to diesel engines: Luminous power stage. |
125 |
6 | SAM front control unit with fuse and
relay module |
60 |