2009-2016 Mercedes-Benz E-Class (W212 / S212) Fuse Box Diagram

F32 - Front electrical prefuse box
F33 - Rear prefuse box (engine 273.9)
F96 - Additional battery circuit 30 fuse (7,5 A)(with ECO start/stop )
F270 - Additional battery protection (Hybrid)
K40/10 - HYBRID fuse and relay module (Hybrid)
K114 - ECO start/stop function additional battery relay
N10/1 - Front SAM control unit with fuse and relay module
N10/2 - Rear SAM control unit with fuse and relay module

Fuse box in the engine compartment

Fuses Specifications
No. A Description
1 25 LHD:
   Electronic Stability Program control unit
   Premium Electronic Stability Program control unit
   Hybrid: Regenerative braking system control unit
RHD: Blower regulator
25 RHD: Blower regulator
2 30 →31.05.2010: Left front door control unit
30 RHD (01.06.2010→): Left rear door control unit
3 30 →31.05.2010: Right front door control unit
30 LHD (01.06.2010→): Right rear door control unit
4 20 M157: Fuel system control unit
20 OM642, OM651 (→31.05.2010): Fuel filter condensation sensor with heating element
7.5 OM651 (with retrofitted heated fuel filter (→31.05.2010): Control unit for fuel filter condensation sensor with heating element
5 7.5 Instrument cluster
Exterior lights switch
Rear SAM control unit with fuse and relay module
01.03.2013→: Electronic Stability Program control unit
01.03.2013→: Premium Electronic Stability Program control unit
6 10 Diesel: CDI control unit
10 Gasoline: ME-SFI control unit
10 M271.958, M274.920: CNG control unit
7 20 Starter
8 7.5 Supplemental restraint system control unit
9 15 Glove compartment socket
10 30 Wiper motor
Wiper park position heater
11 7.5 Audio/COMAND display
Audio/COMAND control panel
Navigation module
Cradle for navigation module
COMAND fan motor
12 7.5 ACC control and operating unit
Upper control panel control unit
Valid for transmission 722, 724, 725: Automatic transmission transmission mode button
AIRMATIC: Suspension button group
13 7.5 Steering column tube module control unit
Multifunction camera
Stereo multifunction camera
14 7.5 Electronic Stability Program control unit
Premium Electronic Stability Program control unit
15 7.5 Supplemental restraint system control unit
16 5 Hybrid: Electrical refrigerant compressor
Valid for transmission 722.930/931: DIRECT SELECT INTERFACE
Valid for transmission 722 (except 722.930/931): Electronic selector lever module control unit
17 30 Overhead control panel control unit
Panoramic sliding roof control module
18 7.5 Exterior lights switch
Hybrid: Power electronics control unit
→28.02.2013:
   Instrument panel switch group
   Upper control panel control unit
Valid for transmission 722 with ECO start/stop: Transmission oil auxiliary pump relay
19 20 except transmission 722.9:
   Electronic ignition lock control unit
   Electric steering lock control unit
20 40 LHD:
   Electronic Stability Program control unit
   Premium Electronic Stability Program control unit
LHD (Hybrid): Regenerative braking system control unit
21 7.5 Front passenger seat occupied recognition and ACSR
Weight sensing system (WSS) control unit
except Hybrid (→28.02.2013): Brake lights switch
Hybrid (→28.02.2013):
   Hybrid brake light switch
   Switched through glove compartment lamp switch
   Glove compartment lamp  
22 15 Fan motor 650 or 800 W: Fan motor for internal combustion engine and air conditioning with integrated control
M156:
   Electrical connector for interior harness and engine wiring harness
   Circuit 87 M2e connector sleeve
M157, M271, M272, M273, M274, M276, M278: Electrical connector for interior harness and engine wiring harness
M271, M272.98, M274.9, M276, OM651 (except 4MATIC): Radiator shutters actuator
OM642, OM651:
   CDI control unit
   Electrical connector for interior harness and engine wiring harness
23 20 Diesel: Rear SAM control unit with fuse and relay module
271, 642, 651: Circuit 87 M1e connector sleeve
M156, M157, M271, M272, M273, M274, M276, M278, OM642, OM651: Electrical connector for interior harness and engine wiring harness
271: ME-SFI control unit
24 15 M156, M157, M271, M272, M273, M274, M276, M278, OM642, OM651: Electrical connector for interior harness and engine wiring harness
Diesel: CDI control unit
Gasoline: ME-SFI control unit
M271.958, M274.920: CNG control unit
25 15 OM642, OM651 with BlueTEC:
   Nitrogen oxides control unit downstream of diesel particulate filter 
   Nitrogen oxides control unit downstream of the SCR catalytic converter
   Soot particulate sensor control unit
Gasoline: ME-SFI control unit
Hybrid:
   Transmission cooling coolant circulation pump relay
   HYBRID power electronics coolant circulation pump relay
M156: Connector sleeve, circuit 87 M3e
26 20 Radio
Radio with auto pilot system
COMAND controller unit
27 7.5 Gasoline: ME-SFI control unit
Diesel:
   CDI control unit
   Electronic ignition lock control unit
M271.958, M274.920: CNG control unit
28 7.5 Instrument cluster
29 10 →28.02.2013: Right front lamp unit
30 10 →28.02.2013: Left front lamp unit
31A 15 Left fanfare horn
Right fanfare horn
31B 15 Left fanfare horn
Right fanfare horn
32 40 M272: Electric air pump
33 10 Valid for transmission 722.6: Electronic transmission control control unit
Valid for transmission 722.9, 724, 725: Fully integrated transmission control controller unit
34 7.5 M156, M271, M272, M273, OM642, OM651: Fuel system control unit
35 7.5 Hybrid: HYBRID control unit power supply relay
36 7.5 Night View Assist control unit
→28.02.2013: DISTRONIC electric controller unit
01.03.2013→: Front long-range radar sensor
01.03.2013→: COLLISION PREVENTION ASSIST controller unit
Relay
J Circuit 15
K Circuit 15R
L Wiper park position heater
M Starter circuit 50
N Engine circuit 87
O Horn
P M272: Secondary air injection
Q Transmission oil auxiliary pump
R Chassis circuit 87

Gasoline:

Diesel:

Fuse box in the trunk

Fuses Specifications
No. A Description
37 7.5 Driver seat NECK-PRO head restraint solenoid
Front passenger seat NECK-PRO head restraint solenoid
38 15 W212.2: Tailgate wiper motor
39 30 →31.05.2010: Left rear door control unit
RHD (01.06.2010→): Left front door control unit
40 - -
41 30 →31.05.2010: Right rear door control unit
LHD (01.06.2010→): Right front door control unit
42 25 Fuel pump relay
M156, M271, M272, M273, M274, M276, M278, OM642, OM651: Fuel system control unit
43 7.5 Telematics services communications module
44 30 Front passenger seat partially electric seat adjustment switch
45 30 Driver seat partially electric seat adjustment switch
46 7.5 FM 1, AM, CL [ZV] and KEYLESS-GO antenna amplifier
Rear window antenna amplifier 1
DAB band III antenna
Alarm siren
Interior protection and tow-away protection control unit
M157, M276, M278 (01.06.2011→): Coolant circulation pump relay
47 - -
48 - -
49 40 Rear window heater
50 50 Right front reversible emergency tensioning retractor
51 50 Left front reversible emergency tensioning retractor
52 - -
53 30 Trailer recognition control unit
54 15 Trailer recognition control unit
55 - -
56 15 Trailer socket
57 20 Trailer recognition control unit
7.5 Left front illuminated door sill molding voltage converter
Right front illuminated door sill molding voltage converter
58 25 Trailer recognition control unit
59 7.5 Left front bumper DISTRONIC (DTR) sensor
Right front bumper DISTRONIC (DTR) sensor
60 7.5 Multicontour seat pneumatic pump
30 Dynamic multicontour seat pneumatic pump
61 40 Trunk lid control control unit
Tailgate control control unit
62 25 Driver seat control unit
63 25 Rear seat heater control unit
64 25 Front passenger seat control unit
65 7.5 →28.02.2013: Steering wheel heater control unit
10 01.03.2013→: Steering column tube module control unit
66 7.5 Rear blower motor
67 40 Sound system amplifier control unit
68 15 AIRmatic control unit
Rear axle electronic level control control unit
69 25 Rear bass speaker amplifier
70 5 Tire pressure monitor control unit
71 15 Vehicle interior socket, front
Front cigarette lighter with ashtray illumination
72 15 Cargo area socket
73 5 Diagnostic connector
Stationary heater radio remote control receiver
Valid with transmission 722.930/931: Transmission mode control unit
74 15 KEYLESS-GO control unit
01.03.2013→: Right front lamp unit
01.03.2013→: Left front lamp unit
01.12.2011→: DC/AC converter control unit
75 20 Stationary heater unit
01.03.2013→ (with Dynamic LED headlamps):
   Left front lamp unit
   Right front lamp unit
25 M156: Oil cooler fan motor relay
76 15 Rear cup holder
Rear center console socket
Rear USB electrical connection
77 7.5 Rear cup holder
→28.02.2013: Weight sensing system (WSS) control unit
China, South Korea: Navigation processor
78 7.5 Media interface control unit
Multimedia connection unit
79 5 →31.05.2010: Radar sensors control unit
01.06.2010→: Video and radar sensor system control unit
01.03.2013→: Chassis gateway control unit
80 5 Parking system control unit
81 5 Cellular telephone system antenna amplifier / compensator
Mobile phone electrical connector
Navigation processor
82 10 Left front seat ventilation blower regulator
Right front seat ventilation blower regulator
83 7.5 Circuit 15R connector sleeve
Emergency call system control unit
→31.05.2010: Navigation processor
Japan: Electronic Toll Collection control unit
84 5 Reversing camera power supply module
Digital Audio Broadcasting control unit
→28.02.2013: Reversing camera control unit
01.03.2013→: Reversing camera
→31.05.2010: SDAR/high definition tuner control unit
01.06.2010→: Satellite digital audio radio (SDAR) control unit
01.03.2013→: 360° camera control unit
85 7.5 →28.02.2015: TV tuner (analog/digital)
→28.02.2015 : Digital TV tuner
01.03.2015→: Tuner unit
86 7.5 DVD player
Left rear display 
Right rear display
87 7.5 Emergency call system control unit
Special vehicle multifunction control unit (SVMCU)
M157, M274, M276, M278 (01.06.2011→): Coolant circulation pump relay
01.03.2015→: Telematics services communications module
88 15 Valid with transmission 722.9: Intelligent servo module for DIRECT SELECT
89 30 Trailer recognition control unit
Special vehicle multifunction control unit (SVMCU)
M157 (→28.02.2013): Fuel system control unit
01.03.2013→ (with Static LED headlamps):
   Right front lamp unit
   Left front lamp unit
90 40 Coolant circulation pump relay
OM642.8 with BlueTEC: AdBlue® fuse block
91 10 Valid for transmission 722 with ECO start/stop: Front SAM control unit with fuse and relay module
92 15 01.03.2013→: KEYLESS-GO control unit
01.03.2013→: Rear switching module
→30.11.2011: DC/AC converter control unit
Relay
A Circuit 15
B Circuit 15R (1)
C Rear window heater
D Diesel: Fuel pump
E Liftgate windshield wiper
F Seat adjustment
G Circuit 15R (2)

Front electrical prefuse box

Fuses Specifications
No. A Description
MR8 - Pyrofuse, triggered by Supplemental Restraint System control unit
MR1 50 Electrical power steering control unit
MR2 - -
MR3 - -
MR4 100 Fan motor for internal combustion engine and air conditioning with integrated control
MR5 150 Diesel: PTC heater booster
MR6 60 Valid for front on-board electrical system battery: Front SAM control unit with fuse and relay module
MR7 150 Front SAM control unit with fuse and relay module
PIN1 50 LHD: Blower regulator
RHD:
   Electronic Stability Program control unit
   Premium Electronic Stability Program control unit
PIN2 50 RHD:
   Electronic Stability Program control unit
   Premium Electronic Stability Program control unit
PIN3 60 AIRmatic relay
Valid with transmission 725: Fully integrated transmission control unit
MRG1 - -
MRG2 100 Front SAM control unit with fuse and relay module
IG1 150 Rear SAM control unit with fuse and relay module
I1 100 Valid for front on-board electrical system battery: Rear SAM control unit with fuse and relay module

Front electrical prefuse box (with ECO start/stop)

Fuses Specifications
No. A Description
MR8 350 Alternator
Stationary heater control unit
MR4 100 Fan motor for internal combustion engine and air conditioning with integrated control
MR5 150 Diesel: PTC heater booster
MR6 60 Valid for front on-board electrical system battery: Front SAM control unit with fuse and relay module
MR7 150 Front SAM control unit with fuse and relay module
MR9 - -
MG2 100 Front SAM control unit with fuse and relay module
MR3 80 Electrical power steering control unit
IG1 150 Rear SAM control unit with fuse and relay module
IM1 100 Valid for front on-board electrical system battery: Rear SAM control unit with fuse and relay module
PIN1 50 LHD: Blower regulator
RHD:
   Electronic Stability Program control unit
   Premium Electronic Stability Program control unit
PIN2 50 RHD:
   Electronic Stability Program control unit
   Premium Electronic Stability Program control unit
PIN3 60 AIRmatic relay
Valid with transmission 725: Fully integrated transmission control unit

Front electrical prefuse box (Hybrid)

Fuses Specifications
No. A Description
MR8 - Pyrofuse, triggered by Supplemental Restraint System control unit
MR4 100 Fan motor for internal combustion engine and air conditioning with integrated control
MR5 150 Diesel: PTC heater booster
MR6 60 Valid for front on-board electrical system battery: Front SAM control unit with fuse and relay module
MR7 150 Front SAM control unit with fuse and relay module
MR9 150 HYBRID fuse and relay module
MG2 100 Front SAM control unit with fuse and relay module
MR3 80 Electrical power steering control unit
IG1 150 Rear SAM control unit with fuse and relay module
IM1 100 Valid for front on-board electrical system battery: Rear SAM control unit with fuse and relay module
PIN1 50 LHD: Blower regulator
RHD: Regenerative braking system control unit
PIN2 50 RHD: Regenerative braking system control unit
PIN3 60 AIRmatic relay

Rear prefuse box

Fuses Specifications
No. A Description
170 - Reserve
171 60 Front SAM control module with fuse and relay module
172 100 Rear SAM control unit with fuse and relay module

AdBlue fuse block

Fuses Specifications
No. A Description
19 15 AdBlue® control unit
20 20 AdBlue® control unit
21 7.5 AdBlue® control unit
22 5 AdBlue® control unit

HYBRID fuse and relay module

Fuses Specifications
No. A Description
130 5 Regenerative braking system control unit
131 5 Battery management system control unit
132 - -
133 5 Power electronics control unit
134 5 Vacuum pump relay (-)
135 7.5 Battery management system control unit
136 7.5 Pyrotechnical separator
137 7.5 Power electronics circulation pump 1
138 7.5 Power electronics circulation pump 2
139 7.5 OM651: Transmission cooling coolant circulation pump
140 40 Vacuum pump relay (+)
141 - -
142 - -
Relay
S Transmission cooling coolant circulation pump
T HYBRID control unit power supply
U HYBRID power electronics coolant circulation pump

Additional fuses and relay

Oil cooler fan motor relay (M157)
F12 - Stationary heater fuse (Hybrid)
F37 - AdBlue® fuse block (with engine OM642.8 with BlueTEC)
K27/7 - AdBlue® supply relay (with engine OM642.8 with BlueTEC)

K60 - Coolant circulation pump relay (01.06.2011→ with engine M157, M274, M276, M278)
K67 - AIRMATIC relay
K109 - Vacuum pump relay (+) (Hybrid)
K109/1 - Vacuum pump relay (-) (Hybrid)