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

Fuse box diagram (fuse layout), location, and assignment of fuses and relays Mercedes-Benz E-Class (W212; E180, E200, E220, E250, E300, E350, E400, E500 & E63 AMG) (2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016).

Mercedes-Benz E-Class (W212) (2009-2016)

Checking and Replacing Fuses

The fuses in your vehicle serve to close down faulty circuits. If a fuse blows, all the components on the circuit and their functions stop operating. If a fuse has blown, the inside element will be melted. Blown fuses must be replaced with fuses of the same rating, which you can recognize by the color and value. The fuse ratings are listed in the fuse allocation chart. The fuse allocation chart is located in the vehicle tool kit in the storage compartment under the trunk/cargo compartment floor.

If a newly inserted fuse also blows, have the cause traced and rectified at a qualified specialist workshop, e.g. an authorized Mercedes-Benz Center.

Notice

  • Before changing a fuse, secure the vehicle against rolling away and switch off all electrical consumers.
  • Always disconnect the battery before servicing high current fuses.
  • Always replace faulty fuses with the specified new fuses having the correct amperage. If you manipulate or bridge a faulty fuse or if you replace it with a fuse with a higher amperage, the electric cables could be overloaded. This could result in a fire. There is a risk of an accident and injury.
  • Only use fuses that have been approved for Mercedes-Benz vehicles and which have the correct fuse rating for the system concerned. Otherwise, components or systems could be damaged.

Location

Location of fuses

  • 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

Engine Compartment Fuse Box

The fuse block is located in the engine compartment on the left-hand side of the vehicle when viewed in the direction of travel.

Engine Compartment Fuse Box Location

  • Make sure that the windshield wipers are turned off.
  • Open the hood.
  • Use a dry cloth to remove any moisture from the fuse box.
  • To open: remove lines (2) from the guides.
  • Move lines (2) aside. Route the lines behind connection (3) to do this.
  • Open clamp (1).
  • Remove the fuse box cover forwards.
  • To close: check whether the rubber seal is lying correctly in the cover.
  • Insert the cover at the rear of the fuse box into the retainer.
  • Fold-down cover and close clamps (1).
  • Secure lines (2) in the guides.
  • Close the hood.

Engine Compartment Fuse Box Diagram

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Fused componentA
1Valid for left-hand drive vehicle:25
   Electronic Stability Program control unit
   Premium Electronic Stability Program control unit
   Hybrid: Regenerative braking system control unit
Valid for right-hand drive vehicles: Blower regulator
2up to 31.05.2010: Left front door control unit30
Valid for right-hand drive vehicles as of 01.06.2010: Left rear door control unit
3up to 31.05.2010: Right front door control unit30
Valid for left-hand drive vehicles as of 01.06.2010: Right rear door control unit
4Valid with engine 157: Fuel system control unit20
Valid for engine 642, 651 up to 31.05.2010: Fuel filter condensation sensor with heating element
Valid for engine 651 (with retrofitted heated fuel filter) up to 31.05.2010: Control unit for fuel filter condensation sensor with heating element7.5
5Instrument cluster7.5
Exterior lights switch
Rear SAM control unit with fuse and relay module
Valid as of 01.03.2013: Electronic Stability Program control unit
Valid as of 01.03.2013: Premium Electronic Stability Program control unit
6Valid for diesel engine: CDI control unit10
Valid for gasoline engine: ME-SFI control unit
Valid for engine 271.958, 274.920: CNG control unit
7Starter20
8Supplemental restraint system control unit7.5
9Glove compartment socket15
10Wiper motor30
Wiper park position heater
11Audio/COMAND display7.5
Audio/COMAND control panel
Navigation module
Cradle for navigation module
COMAND fan motor
12ACC control and operating unit7.5
Upper control panel control unit
Valid for transmission 722, 724, 725: Automatic transmission transmission mode button
AIRMATIC: Suspension button group
13Steering column tube module control unit7.5
Multifunction camera
Stereo multifunction camera
14Electronic Stability Program control unit7.5
Premium Electronic Stability Program control unit
15Supplemental restraint system control unit7.5
16Hybrid: Electrical refrigerant compressor5
Valid with transmission 722.930/931: DIRECT SELECT INTERFACE
Valid for transmission 722 (except 722.930/931): Electronic selector lever module control unit
17Overhead control panel control unit30
Panoramic sliding roof control module
18Exterior lights switch7.5
Hybrid: Power electronics control unit
Valid up to 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
19Valid except transmission 722.9:20
   Electronic ignition lock control unit
   Electric steering lock control unit
20Valid for left-hand drive vehicle:40
   Electronic Stability Program control unit
   Premium Electronic Stability Program control unit
Valid for left-hand drive vehicle, Hybrid: Regenerative braking system control unit
21Front passenger seat occupied recognition and ACSR7.5
Weight sensing system (WSS) control unit
except Hybrid up to 28.02.2013:Brake lights switch
Hybrid up to 28.02.2013:
   Hybrid brake light switch
   Switched through glove compartment lamp switch
   Glove compartment lamp  
22Valid for fan motor with 650, 800 W: Fan motor for internal combustion engine and air conditioning with integrated control15
Valid for engine 156:
   Electrical connector for interior harness and engine wiring harness
   Circuit 87 M2e connector sleeve
Valid for engine 157, 271, 272, 273, 274, 276, 278: Electrical connector for interior harness and engine wiring harness
Valid for engine 271, 272.98, 274.9, 276 and engine 651 (except with 4MATIC): Radiator shutters actuator
Valid for engine 642, 651:
   CDI control unit
   Electrical connector for interior harness and engine wiring harness
23Valid for diesel engine: Rear SAM control unit with fuse and relay module20
Valid for engine 271, 642, 651: Circuit 87 M1e connector sleeve
Valid for engine 156, 157, 271, 272, 273, 274, 276, 278, 642, 651: Electrical connector for interior harness and engine wiring harness
Valid for engine 271: ME-SFI control unit
24Valid for engine 156, 157, 271, 272, 273, 274, 276, 278, 642, 651: Electrical connector for interior harness and engine wiring harness15
Valid for diesel engine: CDI control unit
Valid for gasoline engine: ME-SFI control unit
Valid for engine 271.958, 274.920: CNG control unit
25Valid for engine 642, 651 with BlueTEC:15
   Nitrogen oxides control unit downstream of diesel particulate filter 
   Nitrogen oxides control unit downstream of the SCR catalytic converter
   Soot particulate sensor control unit
Valid for gasoline engine: ME-SFI control unit
Hybrid:
   Transmission cooling coolant circulation pump relay
   HYBRID power electronics coolant circulation pump relay
Valid for engine 156: Connector sleeve, circuit 87 M3e
26Radio20
Radio with auto pilot system
COMAND controller unit
27Valid for gasoline engine: ME-SFI control unit7.5
Valid for diesel engine:
   CDI control unit
   Electronic ignition lock control unit
Valid for engine 271.958, 274.920: CNG control unit
28Instrument cluster7.5
29Valid up to 28.02.2013: Right front lamp unit10
30Valid up to 28.02.2013: Left front lamp unit10
31ALeft fanfare horn15
Right fanfare horn
31BLeft fanfare horn15
Right fanfare horn
32Valid for engine 272: Electric air pump40
33Valid for transmission 722.6: Electronic transmission control control unit10
Valid for transmission 722.9, 724, 725: Fully integrated transmission control controller unit
34Valid for engine 156, 271, 272, 273, 642, 651: Fuel system control unit7.5
35Hybrid: HYBRID control unit power supply relay7.5
36Night View Assist control unit7.5
Valid up to 28.02.2013: DISTRONIC electric controller unit
Valid as of 01.03.2013: Front long-range radar sensor
Valid as of 01.03.2013: COLLISION PREVENTION ASSIST controller unit
Relay
JCircuit 15 relay
KCircuit 15R relay
LWiper park position heater relay
MStarter circuit 50 relay
NEngine circuit 87 relay
OHorn relay
PValid for engine 272: Secondary air injection relay
QTransmission oil auxiliary pump relay
RChassis circuit 87 relay

HYBRID fuse and relay module

HYBRID fuse and relay module

Fused componentA
130Regenerative braking system control unit5
131Battery management system control unit5
132Spare-
133Power electronics control unit5
134Vacuum pump relay (-)5
135Battery management system control unit7.5
136Pyrotechnical separator7.5
137Power electronics circulation pump 17.5
138Power electronics circulation pump 27.5
139Valid for engine 651: Transmission cooling coolant circulation pump7.5
140Vacuum pump relay (+)40
141Spare-
142Spare-
Relay
STransmission cooling coolant circulation pump relay
THYBRID control unit power supply relay
UHYBRID power electronics coolant circulation pump relay

Front electrical prefuse box

Front electrical prefuse box

Fused componentA
MR8Pyrofuse, triggered by Supplemental Restraint System control unit-
MR1Electrical power steering control unit50
MR2Spare-
MR3Spare-
MR4Fan motor for internal combustion engine and air conditioning with integrated control100
MR5Valid for diesel engine: PTC heater booster150
MR6Valid for front on-board electrical system battery: Front SAM control unit with fuse and relay module60
MR7Front SAM control unit with fuse and relay module150
PIN1Valid for left-hand drive vehicles: Blower regulator50
Valid for right-hand drive vehicles:
   Electronic Stability Program control unit
   Premium Electronic Stability Program control unit
PIN2Valid for right-hand drive vehicles:50
   Electronic Stability Program control unit
   Premium Electronic Stability Program control unit
PIN3AIRmatic relay60
Valid with transmission 725: Fully integrated transmission control unit
MRG1Spare-
MRG2Front SAM control unit with fuse and relay module100
IG1Rear SAM control unit with fuse and relay module150
I1Valid for front on-board electrical system battery: Rear SAM control unit with fuse and relay module100
with ECO start/stop

Front electrical prefuse box (with ECO start/stop)

Fused componentA
MR8Alternator350
Stationary heater control unit
MR4Fan motor for internal combustion engine and air conditioning with integrated control100
MR5Valid for diesel engine: PTC heater booster150
MR6Valid for front on-board electrical system battery: Front SAM control unit with fuse and relay module60
MR7Front SAM control unit with fuse and relay module150
MR9Spare-
MG2Front SAM control unit with fuse and relay module100
MR3Electrical power steering control unit80
IG1Rear SAM control unit with fuse and relay module150
IM1Valid for front on-board electrical system battery: Rear SAM control unit with fuse and relay module100
PIN1Valid for left-hand drive vehicles: Blower regulator50
Valid for right-hand drive vehicles:
   Electronic Stability Program control unit
   Premium Electronic Stability Program control unit
PIN2Valid for right-hand drive vehicles:50
   Electronic Stability Program control unit
   Premium Electronic Stability Program control unit
PIN3AIRmatic relay60
Valid with transmission 725: Fully integrated transmission control unit
Hybrid

Front electrical prefuse box (Hybrid)

Fused componentA
MR8Pyrofuse, triggered by Supplemental Restraint System control unit-
MR4Fan motor for internal combustion engine and air conditioning with integrated control100
MR5Valid for diesel engine: PTC heater booster150
MR6Valid for front on-board electrical system battery: Front SAM control unit with fuse and relay module60
MR7Front SAM control unit with fuse and relay module150
MR9HYBRID fuse and relay module150
MG2Front SAM control unit with fuse and relay module100
MR3Electrical power steering control unit80
IG1Rear SAM control unit with fuse and relay module150
IM1Valid for front on-board electrical system battery: Rear SAM control unit with fuse and relay module100
PIN1Valid for left-hand drive vehicles: Blower regulator50
Valid for right-hand drive vehicles: Regenerative braking system control unit
PIN2Valid for right-hand drive vehicles: Regenerative braking system control unit50
PIN3AIRmatic relay60

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Luggage Compartment Fuse Box

It is in the trunk/cargo compartment on the right-hand side of the vehicle, when viewed in the direction of travel.

Sedan

Luggage Compartment Fuse Box Location

  • Open the trunk lid.
  • To open: release cover (1) at the top right and left-hand sides with a flat object.
  • Open the cover (1) downwards in the direction of the arrow.

Wagon

Luggage Compartment Fuse Box Location

  • Open the tailgate.
  • To open: pull handle (1) on the cover.
  • Open the cover downwards.
  • Swing trim (2)

Luggage Compartment Fuse Box Diagram

Fused componentA
37Driver seat NECK-PRO head restraint solenoid7.5
Front passenger seat NECK-PRO head restraint solenoid
38Valid for model 212.2: Tailgate wiper motor15
39up to 31.05.2010: Left rear door control unit30
Valid for right-hand drive vehicles as of 01.06.2010: Left front door control unit
40Spare-
41up to 31.05.2010: Right rear door control unit30
Valid for left-hand drive vehicles as of 01.06.2010: Right front door control unit
42Fuel pump relay25
Valid for engine 156, 271, 272, 273, 274, 276, 278, 642, 651: Fuel system control unit
43Telematics services communications module7.5
44Front passenger seat partially electric seat adjustment switch30
45Driver seat partially electric seat adjustment switch30
46FM 1, AM, CL [ZV] and KEYLESS-GO antenna amplifier7.5
Rear window antenna amplifier 1
DAB band III antenna
Alarm siren
Interior protection and tow-away protection control unit
Valid as of 01.06.2011 on engine 157, 276, 278: Coolant circulation pump relay
47Spare-
48Spare-
49Rear window heater40
50Right front reversible emergency tensioning retractor50
51Left front reversible emergency tensioning retractor50
52Spare-
53Trailer recognition control unit30
54Trailer recognition control unit15
55Spare-
56Trailer socket15
57Trailer recognition control unit20
Left front illuminated door sill molding voltage converter7.5
Right front illuminated door sill molding voltage converter
58Trailer recognition control unit25
59Left front bumper DISTRONIC (DTR) sensor7.5
Right front bumper DISTRONIC (DTR) sensor
60Multicontour seat pneumatic pump7.5
Dynamic multicontour seat pneumatic pump30
61Trunk lid control control unit40
Tailgate control control unit
62Driver seat control unit25
63Rear seat heater control unit25
64Front passenger seat control unit25
65up to 28.02.2013: Steering wheel heater control unit7.5
as of 01.03.2013: Steering column tube module control unit10
66Rear blower motor7.5
67Sound system amplifier control unit40
68AIRmatic control unit15
Rear axle electronic level control control unit
69Rear bass speaker amplifier25
70Tire pressure monitor control unit5
71Vehicle interior socket, front15
Front cigarette lighter with ashtray illumination
72Cargo area socket15
73Diagnostic connector5
Stationary heater radio remote control receiver
Valid with transmission 722.930/931: Transmission mode control unit
74KEYLESS-GO control unit15
Valid as of 01.03.2013: Right front lamp unit
Valid as of 01.03.2013: Left front lamp unit
Valid as of 01.12.2011: DC/AC converter control unit
75Stationary heater unit20
Valid as of 01.03.2013 (with Dynamic LED headlamps:
   Left front lamp unit
   Right front lamp unit
Valid for engine 156: Oil cooler fan motor relay25
76Rear cup holder15
Rear center console socket
Rear USB electrical connection
77Rear cup holder7.5
Valid until 28.02.2013: Weight sensing system (WSS) control unit
Valid for China, South Korea vehicles: Navigation processor
78Media interface control unit7.5
Multimedia connection unit
79Valid up to 31.05.2010: Radar sensors control unit5
Valid as of 01.06.2010: Video and radar sensor system control unit
Valid as of 01.03.2013: Chassis gateway control unit
80Parking system control unit5
81Cellular telephone system antenna amplifier / compensator5
Mobile phone electrical connector
Navigation processor
82Left front seat ventilation blower regulator10
Right front seat ventilation blower regulator
83Circuit 15R connector sleeve7.5
Emergency call system control unit
Valid until 31.05.2010: Navigation processor
Japan version: Electronic Toll Collection control unit
84Reversing camera power supply module5
Digital Audio Broadcasting control unit
Valid up to 28.02.2013: Reversing camera control unit
Valid as of 01.03.2013: Reversing camera
Valid up to 31.05.2010: SDAR/high definition tuner control unit
Valid as of 01.06.2010: Satellite digital audio radio (SDAR) control unit
Valid as of 01.03.2013: 360° camera control unit
85Valid until 28.02.2015: TV tuner (analog/digital)7.5
Valid until 28.02.2015 : Digital TV tuner
Valid as of 01.03.2015: Tuner unit
86DVD player7.5
Left rear display 
Right rear display
87Emergency call system control unit7.5
Special vehicle multifunction control unit (SVMCU)
Valid as of 01.06.2011 with engine 157, 274, 276, 278: Coolant circulation pump relay
Valid as of 01.03.2015: Telematics services communications module
88Valid with transmission 722.9: Intelligent servo module for DIRECT SELECT15
89Trailer recognition control unit30
Special vehicle multifunction control unit (SVMCU)
Valid up to 28.02.2013 with engine 157: Fuel system control unit
Valid as of 01.03.2013 (with Static LED headlamps):
   Right front lamp unit
   Left front lamp unit
90Coolant circulation pump relay40
Valid for engine 642.8 with BlueTEC: AdBlue fuse block
91Valid for transmission 722 with ECO start/stop function: Front SAM control unit with fuse and relay module10
92Valid as of 01.03.2013: KEYLESS-GO control unit15
Valid as of 01.03.2013: Rear switching module
Valid until 30.11.2011: DC/AC converter control unit
Relay
ACircuit 15 relay
BCircuit 15R relay (1)
CRear window heater relay
DValid for diesel engine: Fuel pump relay
ELiftgate windshield wiper relay
FSeat adjustment relay
GCircuit 15R relay (2)

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Rear prefuse box

Rear prefuse box

Fused componentA
170Reserve-
171Front SAM control module with fuse and relay module60
172Rear SAM control unit with fuse and relay module100

AdBlue fuse block

AdBlue fuse block

Fused componentA
19AdBlue control unit15
20AdBlue control unit20
21AdBlue control unit7.5
22AdBlue control unit5

Other relays

Oil cooler fan motor relay (engine 157)

Oil cooler fan motor relay

 

Other relays

  • F12 – Stationary heater fuse (Hybrid)
  • F37 – AdBlue fuse block (with engine 642.8 with BlueTEC)
  • K27/7 – AdBlue supply relay (with engine 642.8 with BlueTEC)

 

Other relays

  • K60 – Coolant circulation pump relay (as of 01.06.2011 with engine 157, 274, 276, 278)
  • K67 – AIRMATIC relay
  • K109 – Vacuum pump relay (+) (Hybrid)
  • K109/1 – Vacuum pump relay (-) (Hybrid)