2007-2014 Mercedes-Benz C-Class (W204 / S204 / C204) Fuse Box Diagram

Fuse box in the engine compartment

Fuses Specifications
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:

Diesel:

Fuse box in the trunk

   →31.05.2009

   01.06.2009→

Fuses Specifications
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

Fuses Specifications
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)

Fuses Specifications
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

Fuses Specifications
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

Fuses Specifications
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