Mercedes-Benz C-Class W203 (2000-2007) – fuse box

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

Mercedes-Benz C-Class W203 – fuse diagram – luggage compartment
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

Mercedes-Benz C-Class W203 – instrument panel fuse diagram
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

Mercedes-Benz C-Class w203 – fuse box diagram – 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

Mercedes-Benz C-Class W203 – fuse box diagram – front fuse box
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
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