Mercedes-Benz C-Class W203 (2000-2007) - fuse box - Fuse box diagrams (2024)

Number
Description
Amperes [A]
1Front passenger seat adjustment control unit with memory;

Passenger seat partially electric adjustment switch.

302Front driver seat adjustment control with memory;

Driver seat partially electric adjustment switch.

303Dome lamp;

Right trunk lamp;

Left trunk lamp;

Radio remote control receiver STH.

7.5TV tuner (up to 2/29/04)

TV tuner (MOST) (as of 1.4.04)

204Fuel pump relay (N10 / 2kA)205Valid for engine 112.961 (up to 03/31/04):

Charge air cooler circulation pump;

Valid without engine 112.961:

Backup relay 2.

206Reserve257Backup relay 17.58Amplifier module, window antenna;

Alarm signal (H3);

ATA inclination sensor [EDW].

7.59Control panel control unitsuspended.2510Heated rear window4011Reserve2012Internal socket;

Applies tomodel 203.0, US version (up to 03/31/04):

Power socket.

1513Multicontour seat air pump

Voice control system control unit

Dome rear lamp

Dome rear lamp

PTS warning indicator

PTS control unit

Japaneseversion:

VICS + ETC Voltage supply separation point.

514Tailgate Wiper Motor1515Plug polarity reversal relayfuel filler 1;

Plug polarity reversal relay fuel filler 2.

1016Voice control system control unit2017Trailer recognition control unit2018Trailer hitch socket (13-pin)2019Multicontour seat pneumatic pump2020Rear window roller shutter relay

Valid for model 203.2 / 7 USA version:

Power socket

15RelayAFuel pump relayBRelay 2, terminal 15RC.Backup relay 2DBackup relay 1E.Rear window defroster relayG.Relay 1, terminal 15RG.Filler cap relay, polarity reversal 1H.Filler cap relay, polarity switch 2

Number
Description
Amperes [A]
21Left front door control unit3022Right front door control unit3023Until 30/11/04:

Central gate control unit.

1524CD player with changer(in the glove box).7.525Top control panel control unit3026Sound amplifier2527Front seat adjustment control unit driver’s side, with memory;

Special multi-functional vehicle control unit

(SVMCU [MSS]).

3028Reserve3029Driver’s side front seat adjustment control unit, with memory;

Driver’s side front seat adjustment control unit, with memory;

Multifunctional control unit for a special vehicle.

3030Heating systems recirculation unit4031EIS driver [EZS];

Electric steering wheel lock control unit.

2032Left rear door control unit3033Right rear door control unit3034Cell phone separation point;

up to 31.5.01:

Telephone transmitter / receiver and TELE AID;

D2Btelephone transmitter and receiver;

D2Btelephoneinterface;

E-net compensator;

up to 31.5.01, Japanese version:

E-call control unit.

7.5until 03/31/04:

Front passenger seat adjustment control unit with memory;

from 1.4.04:

Front passenger side seat adjustment control unit with memory;

to 31.5.03,Taxi:

Multifunctional control unit for a special vehicle;

from 1.6.03, Taxi:

multifunction control unit of a special vehicle;

from 1.6.01, Police:

multifunction control unit for a special vehicle.

15from 1.4.04:

Front passenger seat adjustment control unit with memory;

from 1.4.04, Taxi:

Multifunctional control unit for a special vehicle.

3035until 03/31/04:

STH heater

30from 1.4.04:

STH heater

2036until 03/31/04, Police:

Internal socket.

30Valid for engine (612.990) (up to 2/29/04):

Charge air cooler circulation pump;

as of 1.4.04, Japanese version:

Audio gateway control unit.

15Universal Portable CTEL Interface control unit(UPCI [UHI])7.537Charge air cooler circulation pump;

to 29.2.04:

Brake booster vacuum pump controller.

2538to 29.2.04:

Front passenger side seat adjustment control unit with memory;

from 1.4.04, Police:

Multifunctional control unit for a special vehicle

(SVMCU [MSS]).

3039Reserve3040Front passenger side seat adjustment control unit with memory;

Universal portable CTEL control unit

(UPCI [UHI]);

Cell phone separation point;

Telephone interface;

Electric network compensator;

as of 1.6.01, MB Standard telephone:

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:

Via boot lid separation point / FFS [RBA]

boot lid emergency release switch i

rear SAM control module with module

fuse-relay;

USA version:

Via boot lid separation point / FFS [RBA]

boot lid emergency release switch i

rear SAM control unit with fuse i

relay module.

as of 1.4.04, Japanese version:

E-call control unit.

7.5up to 31.5.01:

Multifunctional control unit for a special vehicle

3041HEAT control and operating unit

up to 31.5.01:

AAC [KLA] control and operating unit

Comfort AAC control and operating unit [kLa]

7.5as of 1.6.01:

AAC [KLA] control and service unit;

Comfortable control and operating unit AAC [KLA].

1542Instrument cluster7.5

Number
Description
Amperes [A]
43aHorn relay1543bHorn relay1544Telephone transmitter and receiver and TELE AID;

D2B telephone transmitter and receiver;

D2B cell phone separation point.

545Control unit for restraint systems7.546Wiper switch on and off relay;

Wiper speed relay 1 and 2.

4047Glove box lighting with switch;

Front cigarette lighter (with illumination).

1548Valid for engine 612.990 (up to 31.3.04):

Vacuum pump control unit brake assist;

Valid for engine 112 and engine 113:

Circuit connector sleeve 15 (with fuse);

Valid for engine 646 USA version (up to 03/31/04):

Circuit 30 connector sleeve;

Valid for engine 646 (as of 1.4.04):

O2 sensor upstream of TWC [kAt].

1549Control unit for restraint systems7.550Light switch module;

Valid for engine 612.990

The output stageglow(to 31/03/04);

Hot foil mass air flow sensor

(1.4.04 to 30.11.04).

551AAC with integrated auxiliary controlfan motor

Instrument cluster

Refers to code (581) for the comfort air conditioning

automatic:

C-AAC [K-KLA] multifunctional sensor

C-AAC [K-KLA] sun sensor (4 in total)

Left headlamp assembly

Right headlamp assembly

Applies toAMG vehicles:

Charge air cooler circulation pump

Valid for model 203.0 (up to 31.7.01):

SPS [PML] control unit

7.552Starter1553Valid for diesel engines:Starter relay;

Rear SAM control unit with fuse and relay module;

Valid for engine 611/612/642/646:

CDI control unit.

25Valid for gasoline engines:

Starter relay;

Rear SAM control unit with fuse and

relay module;

Valid forengine 111/271/272:

ME-SFI [ME] control unit;

Valid forengine 112/113:

ME-SFI [ME] control unit;

Circuit 87M1e coupler sleeve.

1554Valid for engine 271.940:

ME-SFI [ME] control unit;

Purge control valve (US version);

Activated carbon tank shut-off valve;

Valid for engine 271.942:

NOX (nitrogen oxides) control unit;

Valid for engine 642/646:

CDI control unit;

Valid for engine 642/646:

Circuit connector sleeve 30.

15Valid for engines 611/612:

CDI control unit;

Valid for engine 611/612 (until 30/11/04):

Heating element for deaeration hose.

7.555Distronic steering angle sensor;

DTR control unit;

Valid for gearbox 722:

ETC control unit [EGS] (up to 31.5.04);

Electronic lever module control unit

gear changes;

Electric Control Unit (VGS);

Valid for gearbox 716:

Gear recognition switch;

Automatic manual gearbox control

gear unit.

7.556ESP and BAS control unit;

Stop light switch.

557Steering angle sensor (up to 31.5.02);

EIS control unit [EZS];

Steering column module (as of 1.6.02);

Valid for engine 112/113:

ME-SFI [ME] control unit.

558Valid for transmission 716:

hydraulic pump SEQ

4059ESP and BAS control unit5060ESP and BAS control unit4061Valid for transmission 716:

Automatic manual gearbox control unit

1562Data link connector;

Light switch module;

Stop light switch.

563Light switch module564Radio;

Radio and navigation unit;

Operating and display unit i

control COMAND.

1065Valid for engine 112/113:

Electric air pump.

40RelayJ.Horn system relayK.Terminal 87 relay, chassisLWiper speed relay 1 and 2M.Terminal 15R relayNSEQ pump control relay [ASG](with automatic manual transmission

Sequentronic (ASG))

OAir pump relay (112, 113, 271 engines only)P.Terminal 15 relayQWipers on and off relayRRelay 87, engineSStarter relay