Mercedes-Benz C-Class Diesel (Jun 07 - Feb 14) 07 to 63 Haynes Repair Manual

2007—2014 Mercedes-Benz W204 (C-Class) fuse diagram

Mercedes-Benz C-Class
W202 (1993-2001)
W203 (2000-2007)
W204 (2007-2014)
W205 (2014-present)
W202
W203
W204
W205

Fuse box in the engine compartment

2007—2014 Mercedes-Benz W204 (C-Class) fuse diagram



No.
Fused function
A
1 Electronic Stability Program control unit 25
2 Left front door control unit
30
3 Valid up to 31.3.10:
   Right front door control unit
Valid as of 1.4.10 with model 204.0/2/9:
   Right rear door control unit
30
4 up to 31.8.08:
   Fuel pump control unit
Valid for engine 156 up to 31.8.08:
   Left fuel pump control unit
   Right fuel pump control unit
Valid for engine 642, engine 651:
   Fuel filter condensation sensor with heating element
Valid for engine 651 up to 31.5.10, engine 646:
Control unit for fuel filter condensation sensor with heating element
7.5
Valid for diesel engine as of 1.9.08:
   Fuel filter condensation sensor with heating element
Valid for engine 276 (USA, South Korea):
   Activated charcoal canister shutoff valve
Valid for model 204.0/2/3 as of 1.3.11, 204.9 as of 1.6.12:
   Headlamp control unit
20
5 Rear SAM control unit with fuse and relay module
Valid as of 1.6.10
   Exterior lights switch
Valid for engine 156 Black Series as of 1.7.11:
   Rear axle differential coolant circuit relay
7.5
6 Valid for diesel engine:
   ME-SFI [ME] control unit
Valid for gasoline engine:
   CDI control unit
10
7 Starter
20
8 Supplemental restraint system control unit
7.5
9 Glove compartment power outlet 15
10 Wiper motor
30
11 Audio/COMAND display
Audio/COMAND control panel
Holder for navigation module
7.5
12 Automatic air conditioning control and operating unit
Upper control panel control unit
7.5
13 Steering column module control unit
Multifunction camera
7.5
14 Electronic Stability Program control unit 7.5
Headlamp control unit
20
15 Supplemental restraint system control unit 7.5
16 Diagnostic connector (up to 31.5.09)
Mobile phone electrical connector
Valid for transmission 722: Electronic selector lever module control unit
5
ECO start/stop function:
   Electric transmission oil pump
20
17 Panoramic sliding roof control module
Overhead control panel control unit
30
18 Valid up to 30.11.09:
   Exterior lights switch
Valid for model 204.0/2 as of 1.3.11, model 204.3:
   Upper control panel control unit
Valid for model 204.0/2 up to 28.2.11, model 204.9:
   Instrument panel climate control LIN positive line connector sleeve
Vehicle interior and harness for taillamp electrical connector
7.5
19 Electric steering lock control unit
Electronic ignition lock control unit
20
20 Electronic Stability Program control unit 40
21 Stop lamp switch
Glove compartment lamp switch
Front passenger seat occupied recognition and ACSR
Electronic Toll Collection preinstallation electrical fuse (Japan)
7.5
22 Combustion engine fan motor and air conditioning with integrated control
Electrical connector for interior harness and engine wiring harness
15
23 Electrical connector for interior harness and engine wiring harness
Valid for diesel engine:
   Rear SAM control unit with fuse and relay module
   CDI control unit
   Terminal 87 connector sleeve
Valid for engine 271:
   Terminal 87 M1e connector sleeve
Valid for engine 272:
   Circuit 87 M1i connector sleeve
20
24 Electrical connector for interior harness and engine wiring harness
Interior and engine wiring harness electrical connector
Valid for engine 642:
   Radiator shutters actuator
Valid for engine 272:
   Terminal 87 M1e connector sleeve
Valid for diesel engine:
   Terminal 87 connector sleeve
Valid for engine 646:
   CDI control unit
15
25 Valid for engine 156, 271, 272, 274, 276:
   ME-SFI [ME] control unit
Valid for diesel engine:
   Oxygen sensor upstream of catalytic converter
Valid as of 1.6.10 for model 204.3 with engine 651 Sport Edition:
   Exhaust system sound generator control unit
15
26 Radio
Radio with auto pilot system
COMAND controller unit
20
27 Electric steering lock control unit
Electronic ignition lock control unit
Valid for diesel engine:
   CDI control unit
Valid for gasoline engine:
   ME-SFI [ME] control unit
7.5
28 Instrument cluster
7.5
29 Right front lamp unit 10
30 Left front lamp unit
Valid for engine 642:
   Electrical connector for interior harness and engine wiring harness
10
31A Left fanfare horn
Right fanfare horn
15
31B Left fanfare horn
Right fanfare horn
15
32 Valid for engine 156, 271, 272, 276:
   Electric air pump
40
Valid for engine 156:
   Oil cooler fan motor
20
33 Valid for transmission 722.6:
   Electronic transmission-control control unit
Valid for transmission 722.9:
   Fully integrated transmission control controller unit
10
34 Valid for engine 271, 272 as of 1.9.08:
   Fuel pump control unit
Valid for engine 156 as of 1.9.08:
   Left fuel pump control unit
   Right fuel pump control unit
7.5
35 Valid as of 1.3.11:
   Electronic Stability Program control unit
5
36 Valid as of 1.3.11:
   DISTRONIC electric controller unit
Valid for model 204.902/982/984:
   Electrohydraulic power steering
7.5
Relay
J Circuit 15 relay
K Terminal 15R relay
LL Backup relay
M Circuit 50 starter relay
O Engine circuit 87 relay
O Fanfare horn relay
P Valid for engine 156, 272, 276: Secondary air injection relay
Q Backup relay
R Chassis circuit 87 relay
 

Fuse box in the trunk

 
up to 31.05.2009
2007—2014 Mercedes-Benz W204 (C-Class) fuse diagram
as of 1.06.2009
2007—2014 Mercedes-Benz W204 (C-Class) fuse diagram



No.
Fused function
A
37 as of 2008:
   Driver seat NECK-PRO head restraint solenoid
   Front passenger seat NECK-PRO head restraint solenoid
5
up to 2008:
   Driver seat NECK-PRO head restraint solenoid
   Front passenger seat NECK-PRO head restraint solenoid
7.5
38 Tailgate wiper motor
15
39 Valid for model 204.0/2/9 except vehicles for Great Britain up to 31.5.09:
   Left rear door control unit
30
40 Spare -
41 Valid for model 204.0/2/9 up to 31.3.10:
   Right rear door control unit
Valid as of 1.4.10
   Right front door control unit
30
42 Valid for gasoline engine or engine 642 as of 1.12.09 or engine 651 as of 1.6.09:
   Fuel pump control unit
25
Valid for engine 646 or engine 642 up to 30.11.09 or engine 651 up to 31.5.09:
   Fuel pump
Valid for gasoline engine (up to 2009):
   Fuel pump control unit
20
43 Valid as of 1.6.09 with automatic air conditioning:
   Rear blower motor
5
44 Switch group, right front seat setting
Front passenger seat partially electric seat adjustment switch
30
45 Left front seat adjustment switch group
Driver seat partially electric seat adjustment switch
30
46 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
7.5
47 Spare -
48 Spare -
49 Rear window heater
40
50 Right front reversible emergency tensioning retractor 50
51 Left front reversible emergency tensioning retractor (A76) 50
52 Spare -
53 as of 2008: Trailer recognition control unit
15
up to 2008: Trailer recognition control unit
30
54 up to 31.5.09: Trailer recognition control unit
Valid for model 204.075/077/275/277:
   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
7.5
as of 1.6.09: Trailer recognition control unit 15
55 Valid as of 1.6.09
   AdBlue
5
56 Trailer recognition control unit
Trailer socket
15
Valid for model 204.077/277/377 up to 31.5.09:
   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
5
57 Trailer recognition control unit
20
58 as of 2008: Trailer recognition control unit
20
up to 2008: Trailer recognition control unit
30
59 as of 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
5
up to 2008: T
   PARKTRONIC control unit
   Radar sensors control unit
7.5
60 Multicontour seat pneumatic pump
7.5
61 Liftgate-control control unit 40
62 Driver seat control unit
30
63 Front passenger seat control unit 30
64 DC/AC converter control unit
25
65 Adaptive damping system control unit
Steering column tube module control unit
15
66 Spare -
67 as of 2008: Sound system amplifier control unit 30
up to 2008: Sound system amplifier control unit 40
68 Spare -
69 Rear bass speaker amplifier
20
70 Tire pressure monitor control unit 5
71 Front cigarette lighter with ashtray illumination
Front vehicle interior power outlet
15
72 Cargo area connector box
115 V power outlet
15
73 Diagnostic connector (as of 1.6.09)
Stationary heater radio remote control receiver
Valid for engine 156 as of 1.7.11:
   Transmission mode control unit
7.5
74 KEYLESS-GO control unit
15
75 Stationary heater unit 20
76 Vehicle interior power outlet
15
77 Weight Sensing System (WSS) control unit
7.5
78 Left front seat ventilation blower regulator
Right front seat ventilation blower regulator
7.5
79 Parking system control unit
5
80 Video and radar sensor system control unit
Parking system control unit
7.5
81 Media interface control unit
5
82 Cellular telephone system compensator UMTS
TV tuner control unit (up to 31.5.09; Japan)
Digital TV tuner (up to 31.5.09; Japan)
5
83 Electronic Toll Collection control unit (Japan)
Emergency call system control unit
Reversing camera
Left rear display
Right rear display
7.5
84 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
7.5
85 TV tuner control unit (up to 31.5.09; Japan)
Digital TV tuner (as of 1.6.09; Japan)
7.5
86 DVD player 7.5
87 Emergency call system control unit
7.5
88 Valid as of 1.6.09
   Spare
-
89 Valid as of 1.6.09:
   Trailer recognition control unit
Valid as of 1.6.09 with engine 156:
   Oil cooler fan motor relay
20
90 Valid as of 1.6.09
   AdBlue® fuse block
   AdBlue® supply relay
40
91 DC/AC converter control unit 25
ECO start/stop: Transmission oil auxiliary pump control unit
Valid for engine 642: Vent line heater element
20
92 Valid as of 1.6.09
   Spare
-
Relay
A Terminal 15 relay
B Circuit 15R relay (1)
C Heated rear window relay
D Valid for diesel engine: Fuel pump relay
E
Tailgate windshield wiper relay
F Seat adjustment relay
G
Circuit 15R relay (2)

The Instrument Panel Fuse Panel

2007—2014 Mercedes-Benz W204 (C-Class) fuse diagram



No.
Fused function
A
116 Driver seat control unit
30
117 Adaptive damping system control unit 15
118 Spare -
119 Rear blower motor
AMG Performance Media control unit (valid as of 1.6.12)
7.5
120 Spare -
121 Spare -
122 Spare -
123 Steering column tube module control unit 10
124 Spare -
125 Spare -
126 Front passenger seat control unit
30
127 Spare -
128 Spare -
129 Valid for engine 156: Oil cooler fan motor relay
20
130 Spare -
131 Spare -
132 Spare -
133 Spare -
134 Spare -
135 Spare -

Front prefuse box (up to 2010)

2007—2014 Mercedes-Benz W204 (C-Class) fuse diagram
No.
Fused function
A
88 Pyrofuse:
   Alternator
   Starter

89 Front SAM control unit with fuse and relay module
125
90 Rear SAM control unit with fuse and relay module 40
91 Combustion engine fan motor and air conditioning with integrated control
80
100 Air conditioner housing
40
101 Valid for gasoline engine: Front SAM control unit with fuse and relay module
60
103 Valid for diesel engine: PTC heater booster
150
104 Interior fuse box
70
105 Front SAM control unit with fuse and relay module
100
106 Rear SAM control unit with fuse and relay module
150
107 Spare -
108 Spare -
109 Spare -
110 Spare -
as of 2010
without ECO start/stop
2007—2014 Mercedes-Benz W204 (C-Class) fuse diagram
ECO start/stop
2007—2014 Mercedes-Benz W204 (C-Class) fuse diagram
No.
Fused function
A
150 without ECO start/stop: Pyrofuse 88
400
ECO start/stop:
   Alternator
   Starter
200
151 Combustion engine fan motor and air conditioning with integrated control 100
152 Front SAM control unit with fuse and relay module 150
153 without ECO start/stop: Spare
100
ECO start/stop function and front battery position: Front SAM control unit with fuse and relay module
60
154 ECO start/stop function and front battery position: Front SAM control unit with fuse and relay module 60
Valid for diesel engine and ECO start/stop: PTC heater booster
150
155 without ECO start/stop: Spare 50
ECO start/stop function: Spare 100
156 Valid for diesel engine without ECO start/stop: PTC heater booster
150
ECO start/stop function: Front SAM control unit with fuse and relay module
100
157 Valid for model 204.902/982/984 without ECO start/stop function: Electrohydraulic power steering
ECO start/stop: Spare
100
158 without ECO start/stop: Blower regulator
50
ECO start/stop: Rear SAM control unit with fuse and relay module
150
159 Special-purpose vehicle multifunction control unit
50
ECO start/stop: Additional battery relay
200
160 without ECO start/stop: Spare 60
ECO start/stop: Blower regulator
50
161 without ECO start/stop: Front SAM control unit with fuse and relay module 100
Special-purpose vehicle multifunction control unit
50
162 without ECO start/stop: Spare 100
ECO start/stop: Spare 60
163 without ECO start/stop: Rear SAM control unit with fuse and relay module
150
164 without ECO start/stop function: Rear SAM control unit with fuse and relay module 80



Rear prefuse box

2007—2014 Mercedes-Benz W204 (C-Class) fuse diagram
No.
Fused function
A
111 Valid for gasoline engine: ME-SFI [ME] control unit 
Valid for diesel engine: CDI control unit
60
112 Special-purpose vehicle multifunction control unit 80
113 Valid for engine 156:
   Left fuel pump control unit
    Right fuel pump control unit
40
114 Spare -
115 Special-purpose vehicle multifunction control unit 100