2007-2014 Mercedes-Benz C-Class (W204 / S204 / C204) Fuse Box Diagram
Fuse box in the engine compartment
| No. | A | Description |
|---|---|---|
| 1 | 25 | Electronic Stability Program control unit |
| 2 | 30 | Left front door control unit |
| 3 | 30 | →31.03.2010:
Right front door control unit 01.04.2010→ (W204.0/2/9): Right rear door control unit |
| 4 | 7.5 | →31.08.2008:
Fuel pump control unit →31.08.2008 (M156): Left fuel pump control unit Right fuel pump control unit OM642, OM651: Fuel filter condensation sensor with heating element →31.05.2010, (OM651, OM646): Control unit for fuel filter condensation sensor with heating element |
| 20 | 01.09.2008→ (Diesel):
Fuel filter condensation sensor with heating element M276 (USA, South Korea): Activated charcoal canister shutoff valve W204.0/2/3 (01.03.2011→), W204.9 (01.06.2012→): Headlamp control unit |
|
| 5 | 7.5 | Rear SAM control unit with fuse and relay module
01.06.2010→ Exterior lights switch 01.07.2011→ (M156 Black Series): Rear axle differential coolant circuit relay |
| 6 | 10 | Diesel:
ME-SFI [ME] control unit Gasoline: CDI control unit |
| 7 | 20 | Starter |
| 8 | 7.5 | Supplemental restraint system control unit |
| 9 | 15 | Glove compartment power outlet |
| 10 | 30 | Wiper motor |
| 11 | 7.5 | Audio/COMAND display
Audio/COMAND control panel Holder for navigation module |
| 12 | 7.5 | Automatic air conditioning control and operating unit
Upper control panel control unit |
| 13 | 7.5 | Steering column module control unit
Multifunction camera |
| 14 | 7.5 | Electronic Stability Program control unit |
| 20 | Headlamp control unit | |
| 15 | 7.5 | Supplemental restraint system control unit |
| 16 | 5 | Diagnostic connector (→31.05.2009)
Mobile phone electrical connector Valid for transmission 722: Electronic selector lever module control unit |
| 20 | ECO start/stop:
Electric transmission oil pump |
|
| 17 | 30 | Panoramic sliding roof control module
Overhead control panel control unit |
| 18 | 7.5 | →30.11.2009:
Exterior lights switch W204.0/2 (01.03.2011→, W204.3): Upper control panel control unit 2204.0/2 (→28.02.2011, W204.9): Instrument panel climate control LIN positive line connector sleeve Vehicle interior and harness for taillamp electrical connector |
| 19 | 20 | Electric steering lock control unit
Electronic ignition lock control unit |
| 20 | 40 | Electronic Stability Program control unit |
| 21 | 7.5 | Stop lamp switch
Glove compartment lamp switch Front passenger seat occupied recognition and ACSR Electronic Toll Collection preinstallation electrical fuse (Japan) |
| 22 | 15 | Combustion engine fan motor and air conditioning with integrated control
Electrical connector for interior harness and engine wiring harness |
| 23 | 20 | Electrical connector for interior harness and engine wiring harness
Diesel: Rear SAM control unit with fuse and relay module CDI control unit Terminal 87 connector sleeve M271: Terminal 87 M1e connector sleeve M272: Circuit 87 M1i connector sleeve |
| 24 | 15 | Electrical connector for interior harness and engine wiring harness
Interior and engine wiring harness electrical connector OM642: Radiator shutters actuator M272: Terminal 87 M1e connector sleeve Diesel: Terminal 87 connector sleeve OM646: CDI control unit |
| 25 | 15 | M156, M271, M272, M274, M276:
ME-SFI [ME] control unit Diesel: Oxygen sensor upstream of catalytic converter 01.06.2010→ (W204.3 with engine OM651 Sport Edition): Exhaust system sound generator control unit |
| 26 | 20 | Radio
Radio with auto pilot system COMAND controller unit |
| 27 | 7.5 | Electric steering lock control unit
Electronic ignition lock control unit Diesel: CDI control unit Gasoline: ME-SFI [ME] control unit |
| 28 | 7.5 | Instrument cluster |
| 29 | 10 | Right front lamp unit |
| 30 | 10 | Left front lamp unit
OM642: Electrical connector for interior harness and engine wiring harness |
| 31A | 15 | Left fanfare horn
Right fanfare horn |
| 31B | 15 | Left fanfare horn
Right fanfare horn |
| 32 | 40 | M156, M271, M272, M276:
Electric air pump |
| 20 | M156:
Oil cooler fan motor |
|
| 33 | 10 | Valid for transmission 722.6:
Electronic transmission-control control unit Valid for transmission 722.9: Fully integrated transmission control controller unit |
| 34 | 7.5 | 01.09.2008→ (M271, M272):
Fuel pump control unit M156 01.09.2008→: Left fuel pump control unit Right fuel pump control unit |
| 35 | 5 | 01.03.2011→:
Electronic Stability Program control unit |
| 36 | 7.5 | 01.03.2011→:
DISTRONIC electric controller unit W204.902/982/984: Electrohydraulic power steering |
| Relay | ||
| J | Circuit 15 | |
| K | Terminal 15R | |
| LL | Backup | |
| M | Circuit 50 starter | |
| O | Engine circuit 87 | |
| O | Fanfare horn | |
| P | M156, M272, M276: Secondary air injection | |
| Q | Backup | |
| R | Chassis circuit 87 | |
Gasoline:
- 1.6L - M271 (C180 Kompressor BlueEFFICIENCY)
- 1.6L - M274 (C180)
- 1.8L - M271 (C180 Kompressor, C180 CGI BlueEFFICIENCY, C200, C 200 Kompressor, C250)
- 2.5L - M272 (C230)
- 3.0L - M272 (C280 4MATIC, C300 4MATIC)
- 3.5L - M272 (C350 4MATIC, C350 CGI BlueEFFICIENCY)
- 3.5L - M276 (C350 4MATIC)
- 6.2L - M156 (C63 AMG, C63 AMG Edition 507,C63 AMG Coupe Black Series)
Diesel:
- 2.2L (C180 CDI, C200 CDI, C220 CDI 4MATIC, C220 CDI BlueEFFICIENCY, C250 CDI 4MATIC, C250 CDI Sport)
- 2.2L - OM646 (C200 CDI, C200 CDI BlueEFFICIENCY, C220 CDI)
- 3.0L - OM642 (C300 CDI 4MATIC, C320 CDI 4MATIC, C350 CDI 4MATIC, C350 CDI 4MATIC BlueEFFICIENCY, C350 CDI)
Fuse box in the trunk
→31.05.2009
01.06.2009→
| No. | A | Description |
|---|---|---|
| 37 | 5 | 2008→:
Driver seat NECK-PRO head restraint solenoid Front passenger seat NECK-PRO head restraint solenoid |
| 7.5 | →2008: | |
| 38 | 15 | Tailgate wiper motor |
| 39 | 30 | W204.0/2/9 (except UK →31.05.2009):
Left rear door control unit |
| 40 | - | Spare |
| 41 | 30 | W204.0/2/9 (→31.03.2010):
Right rear door control unit 01.04.2010→: Right front door control unit |
| 42 | 25 | Gasoline or OM642 (01.12.2009→) or OM651 (01.06.2009→):
Fuel pump control unit |
| 20 | OM646 or OM642 (→30.11.2009) or OM651 (→31.05.2009):
Fuel pump Gasoline (→2009): Fuel pump control unit |
|
| 43 | 5 | 01.06.2009→ (with automatic air conditioning):
Rear blower motor |
| 44 | 30 | Switch group, right front seat setting
Front passenger seat partially electric seat adjustment switch |
| 45 | 30 | Left front seat adjustment switch group
Driver seat partially electric seat adjustment switch |
| 46 | 7.5 | Antenna amplifier for rear window FM antenna
Alarm siren Interior protection and tow-away protection control unit Rear window antenna amplifier 1 TV 1 antenna amplifier and DAB Band III DAB band III antenna TV 2 antenna amplifier and KEYLESS-GO KEYLESS-GO antenna amplifier |
| 47 | - | Spare |
| 48 | - | Spare |
| 49 | 40 | Rear window heater |
| 50 | 50 | Right front reversible emergency tensioning retractor |
| 51 | 50 | Left front reversible emergency tensioning retractor |
| 52 | - | Spare |
| 53 | 15 | 2008→: Trailer recognition control unit |
| 30 | →2008: Trailer recognition control unit | |
| 54 | 7.5 | →31.5.2009: Trailer recognition control unit
W204.075/077/275/277: Driver seat lumbar support and side bolster adjustment switch group Front passenger seat lumbar support and side bolster adjustment switch group Front passenger seat AMG valve block Driver seat AMG valve block |
| 15 | 01.06.2009→: Trailer recognition control unit | |
| 55 | 5 | 01.06.2009→: AdBlue |
| 56 | 15 | Trailer recognition control unit
Trailer socket |
| 5 | →31.05.2009 (W204.077/277/377):
Driver seat lumbar support and side bolster adjustment switch group Front passenger seat lumbar support and side bolster adjustment switch group Front passenger seat AMG valve block Driver's seat AMG valve block |
|
| 57 | 20 | Trailer recognition control unit |
| 58 | 20 | 2008→: Trailer recognition control unit |
| 30 | →2008: Trailer recognition control unit | |
| 59 | 5 | 2008→:
Parking system control unit Left front bumper DISTRONIC (DTR) sensor Right front bumper DISTRONIC (DTR) sensor Intelligent radar sensor for left rear bumper Intelligent radar sensor for right rear bumper |
| 7.5 | →2008:
PARKTRONIC control unit Radar sensors control unit |
|
| 60 | 7.5 | Multicontour seat pneumatic pump |
| 61 | 40 | Liftgate-control control unit |
| 62 | 30 | Driver seat control unit |
| 63 | 30 | Front passenger seat control unit |
| 64 | 25 | DC/AC converter control unit |
| 65 | 15 | Adaptive damping system control unit
Steering column tube module control unit |
| 66 | - | Spare |
| 67 | 30 | 2008→: Sound system amplifier control unit |
| 40 | →2008: Sound system amplifier control unit | |
| 68 | - | Spare |
| 69 | 20 | Rear bass speaker amplifier |
| 70 | 5 | Tire pressure monitor control unit |
| 71 | 15 | Front cigarette lighter with ashtray illumination
Front vehicle interior power outlet |
| 72 | 15 | Cargo area connector box
115 V power outlet |
| 73 | 7.5 | Diagnostic connector (01.06.2009→)
Stationary heater radio remote control receiver 01.07.2011→ (M156): Transmission mode control unit |
| 74 | 15 | KEYLESS-GO control unit |
| 75 | 20 | Stationary heater unit |
| 76 | 15 | Vehicle interior power outlet |
| 77 | 7.5 | Weight Sensing System (WSS) control unit |
| 78 | 7.5 | Left front seat ventilation blower regulator
Right front seat ventilation blower regulator |
| 79 | 5 | Parking system control unit |
| 80 | 7.5 | Video and radar sensor system control unit
Parking system control unit |
| 81 | 5 | Media interface control unit |
| 82 | 5 | Cellular telephone system compensator UMTS
TV tuner control unit (→31.05.2009; Japan) Digital TV tuner (→31.05.2009; Japan) |
| 83 | 7.5 | Electronic Toll Collection control unit (Japan)
Emergency call system control unit Reversing camera Left rear display Right rear display |
| 84 | 7.5 | Satellite digital audio radio (SDAR) control unit
SDAR/high definition tuner control unit Digital Audio Broadcasting control unit Backup camera power supply module Backup camera control unit 360° camera control unit |
| 85 | 7.5 | TV tuner control unit (→31.05.2009; Japan)
Digital TV tuner (01.06.2009→; Japan) |
| 86 | 7.5 | DVD player |
| 87 | 7.5 | Emergency call system control unit |
| 88 | - | 01.06.2009→:
Spare |
| 89 | 20 | 01.06.2009→:
Trailer recognition control unit 01.06.2009→ (M156): Oil cooler fan motor relay |
| 90 | 40 | 01.06.2009→:
AdBlue® fuse block AdBlue® supply relay |
| 91 | 25 | DC/AC converter control unit |
| 20 | ECO start/stop: Transmission oil auxiliary pump control unit
OM642: Vent line heater element |
|
| 92 | - | 01.06.2009→:
Spare |
| Relay | ||
| A | Terminal 15 | |
| B | Circuit 15R(1) | |
| C | Heated rear window y | |
| D | Diesel: Fuel pump | |
| E | Tailgate windshield wiper | |
| F | Seat adjustment | |
| G | Circuit 15R (2) | |
The Instrument Panel Fuse Panel
| No. | A | Description |
|---|---|---|
| 116 | 30 | Driver seat control unit |
| 117 | 15 | Adaptive damping system control unit |
| 118 | - | Spare |
| 119 | 7.5 | Rear blower motor
AMG Performance Media control unit (01.06.2012→) |
| 120 | - | Spare |
| 121 | - | Spare |
| 122 | - | Spare |
| 123 | 10 | Steering column tube module control unit |
| 124 | - | Spare |
| 125 | - | Spare |
| 126 | 30 | Front passenger seat control unit |
| 127 | - | Spare |
| 128 | - | Spare |
| 129 | 20 | M156: Oil cooler fan motor relay |
| 130 | - | Spare |
| 131 | - | Spare |
| 132 | - | Spare |
| 133 | - | Spare |
| 134 | - | Spare |
| 135 | - | Spare |
Front prefuse box (→2010)
| No. | A | Description |
|---|---|---|
| 88 | Pyrofuse:
Alternator Starter |
|
| 89 | 125 | Front SAM control unit with fuse and relay module |
| 90 | 40 | Rear SAM control unit with fuse and relay module |
| 91 | 80 | Combustion engine fan motor and air conditioning with integrated control |
| 100 | 40 | Air conditioner housing |
| 101 | 60 | Gasoline: Front SAM control unit with fuse and relay module |
| 103 | 150 | Diesel: PTC heater booster |
| 104 | 70 | Interior fuse box |
| 105 | 100 | Front SAM control unit with fuse and relay module |
| 106 | 150 | Rear SAM control unit with fuse and relay module |
| 107 | - | Spare |
| 108 | - | Spare |
| 109 | - | Spare |
| 110 | - | Spare |
Front prefuse box (2010→)
without ECO start/stop
with ECO start/stop
| No. | A | Description |
|---|---|---|
| 150 | 400 | without ECO start/stop: Pyrofuse 88 |
| 200 | ECO start/stop:
Alternator Starter |
|
| 151 | 100 | Combustion engine fan motor and air conditioning with integrated control |
| 152 | 150 | Front SAM control unit with fuse and relay module |
| 153 | 100 | without ECO start/stop: Spare |
| 60 | ECO start/stop and front battery position: Front SAM control unit with fuse and relay module | |
| 154 | 60 | ECO start/stop and front battery position: Front SAM control unit with fuse and relay module |
| 150 | Diesel and ECO start/stop: PTC heater booster | |
| 155 | 50 | without ECO start/stop: Spare |
| 100 | ECO start/stop: Spare | |
| 156 | 150 | Diesel without ECO start/stop: PTC heater booster |
| 100 | ECO start/stop: Front SAM control unit with fuse and relay module | |
| 157 | 100 | W204.902/982/984 without ECO start/stop: Electrohydraulic power steering
ECO start/stop: Spare |
| 158 | 50 | without ECO start/stop: Blower regulator |
| 150 | ECO start/stop: Rear SAM control unit with fuse and relay module | |
| 159 | 50 | Special-purpose vehicle multifunction control unit |
| 200 | ECO start/stop: Additional battery relay | |
| 160 | 60 | without ECO start/stop: Spare |
| 50 | ECO start/stop: Blower regulator | |
| 161 | 100 | without ECO start/stop: Front SAM control unit with fuse and relay module |
| 50 | Special-purpose vehicle multifunction control unit | |
| 162 | 100 | without ECO start/stop: Spare |
| 60 | ECO start/stop: Spare | |
| 163 | 150 | without ECO start/stop: Rear SAM control unit with fuse and relay module |
| 164 | 80 | without ECO start/stop: Rear SAM control unit with fuse and relay module |
Rear prefuse box
| No. | A | Description |
|---|---|---|
| 111 | 60 | Gasoline: ME-SFI [ME] control unit
Diesel: CDI control unit |
| 112 | 80 | Special-purpose vehicle multifunction control unit |
| 113 | 40 | M156:
Left fuel pump control unit Right fuel pump control unit |
| 114 | - | Spare |
| 115 | 100 | Special-purpose vehicle multifunction control unit |