ᐅ Mercedes-Benz E-Class w212 (2009 (2024)

ᐅ Mercedes-Benz E-Class w212 (2009 (1)Jonathan Yarden Mar 25, 2021 · 5 min. read

In this article you will find a description of fuses and relays Mercedes-Benz,with photos of block diagrams and their locations.Highlighted the cigarette lighter fuse (as the most popular thing people look for).
Get tips on blown fuses, replacing a fuse, and more.

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

FuseACircuit protected125Valid for left-hand drive vehicle:
Electronic Stability Program control unit
Premium Electronic Stability Program control unit
Hybrid: Regenerative braking system control unit
Valid for right-hand drive vehicles:Blower regulator230up to 31.05.2010:Left front door control unit
Valid for right-hand drive vehicles as of 01.06.2010:Left rear door control unit330up to 31.05.2010:Right front door control unit
Valid for left-hand drive vehicles as of 01.06.2010:Right rear door control unit420Valid with engine 157:Fuel system control unit
Valid for engine 642, 651 up to 31.05.2010:Fuel filter condensation sensor with heating element7,5Valid for engine 651 (with retrofitted heated fuel filter) up to 31.05.2010:Control unit for fuel filter condensation sensor with heating element57,5Instrument cluster
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 unit610Valid for diesel engine:CDI control unit
Valid for gasoline engine:ME-SFI control unit
Valid for engine 271.958, 274.920:CNG control unit720Starter87,5Supplemental restraint system control unit915Glove compartment socket1030Wiper motor
Wiper park position heater117,5Audio/COMAND display
Audio/COMAND control panel
Navigation module
Cradle for navigation module
COMAND fan motor127,5ACC control and operating unit
Upper control panel control unit
Valid for transmission 722, 724, 725:Automatic transmission transmission mode button
AIRMATIC:Suspension button group137,5Steering column tube module control unit
Multifunction camera
Stereo multifunction camera147,5Electronic Stability Program control unit
Premium Electronic Stability Program control unit157,5Supplemental restraint system control unit165Hybrid:Electrical refrigerant compressor
Valid with transmission 722.930/931:DIRECT SELECT INTERFACE
Valid for transmission 722 (except 722.930/931):Electronic selector lever module control unit1730Overhead control panel control unit
Panoramic sliding roof control module187,5Exterior lights switch
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 relay1920Valid except transmission 722.9:
Electronic ignition lock control unit
Electric steering lock control unit2040Valid for left-hand drive vehicle:
Electronic Stability Program control unit
Premium Electronic Stability Program control unit
Valid for left-hand drive vehicle, Hybrid:Regenerative braking system control unit
217,5Front passenger seat occupied recognition and ACSR
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 lamp2215Valid for fan motor with 650, 800 W:Fan motor for internal combustion engine and air conditioning with integrated control
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
2320Valid for diesel engine:Rear SAM control unit with fuse and relay module
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
2415Valid for engine 156, 157, 271, 272, 273, 274, 276, 278, 642, 651:Electrical connector for interior harness and engine wiring harness
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
2515Valid for engine 642, 651 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
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
2620Radio
Radio with auto pilot system
COMAND controller unit
277,5Valid for gasoline engine:ME-SFI control unit
Valid for diesel engine:
CDI control unit
Electronic ignition lock control unit
Valid for engine 271.958, 274.920:CNG control unit
287,5Instrument cluster2910Valid up to 28.02.2013:Right front lamp unit3010Valid up to 28.02.2013:Left front lamp unit31A15Left fanfare horn
Right fanfare horn31B15Left fanfare horn
Right fanfare horn
3240Valid for engine 272:Electric air pump3310Valid for transmission 722.6:Electronic transmission control control unit
Valid for transmission 722.9, 724, 725:Fully integrated transmission control controller unit
347,5Valid for engine 156, 271, 272, 273, 642, 651:Fuel system control unit357,5Hybrid:HYBRID control unit power supply relay367,5Night View Assist control unit
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
RelayJCircuit 15 relayKCircuit 15R relayLWiper park position heater relayMStarter circuit 50 relayNEngine circuit 87 relayOHorn relayPValid for engine 272:Secondary air injection relayQTransmission oil auxiliary pump relayRChassis circuit 87 relay
No.Circuit protectedA37Driver seat NECK-PRO head restraint solenoid
Front passenger seat NECK-PRO head restraint solenoid7,538Valid for model 212.2:Tailgate wiper motor1539up to 31.05.2010:Left rear door control unit
Valid for right-hand drive vehicles as of 01.06.2010:Left front door control unit3040Spare—41up to 31.05.2010:Right rear door control unit
Valid for left-hand drive vehicles as of 01.06.2010:Right front door control unit3042Fuel pump relay
Valid for engine 156, 271, 272, 273, 274, 276, 278, 642, 651:Fuel system control unit2543Telematics services communications module7,544Front passenger seat partially electric seat adjustment switch3045Driver seat partially electric seat adjustment switch3046FM 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
Valid as of 01.06.2011 on engine 157, 276, 278:Coolant circulation pump relay7,547Spare—48Spare—49Rear window heater4050Right front reversible emergency tensioning retractor5051Left front reversible emergency tensioning retractor5052Spare—53Trailer recognition control unit3054Trailer recognition control unit1555Spare—56Trailer socket1557Trailer recognition control unit20Left front illuminated door sill molding voltage converter
Right front illuminated door sill molding voltage converter7,558Trailer recognition control unit2559Left front bumper DISTRONIC (DTR) sensor
Right front bumper DISTRONIC (DTR) sensor7,560Multicontour seat pneumatic pump7,5Dynamic multicontour seat pneumatic pump3061Trunk lid control control unit
Tailgate control control unit4062Driver seat control unit2563Rear seat heater control unit2564Front passenger seat control unit2565up to 28.02.2013:Steering wheel heater control unit7,5as of 01.03.2013:Steering column tube module control unit1066Rear blower motor7,567Sound system amplifier control unit4068AIRmatic control unit
Rear axle electronic level control control unit
1569Rear bass speaker amplifier2570Tire pressure monitor control unit571Vehicle interior socket, front
Front cigarette lighter with ashtray illumination
1572Cargo area socket1573Diagnostic connector
Stationary heater radio remote control receiver
Valid with transmission 722.930/931:Transmission mode control unit574KEYLESS-GO control unit
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 unit1575Stationary heater unit
Valid as of 01.03.2013 (with Dynamic LED headlamps:
Left front lamp unit
Right front lamp unit20Valid for engine 156:Oil cooler fan motor relay2576Rear cup holder
Rear center console socket
Rear USB electrical connection
1577Rear cup holder
Valid until 28.02.2013:Weight sensing system (WSS) control unit
Valid for China, South Korea vehicles:Navigation processor
7,578Media interface control unit
Multimedia connection unit7,579Valid up to 31.05.2010:Radar sensors control unit
Valid as of 01.06.2010:Video and radar sensor system control unit
Valid as of 01.03.2013:Chassis gateway control unit580Parking system control unit581Cellular telephone system antenna amplifier / compensator
Mobile phone electrical connector
Navigation processor
582Left front seat ventilation blower regulator
Right front seat ventilation blower regulator
1083Circuit 15R connector sleeve
Emergency call system control unit
Valid until 31.05.2010:Navigation processor
Japan version:Electronic Toll Collection control unit7,584Reversing camera power supply module
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 unit585Valid until 28.02.2015:TV tuner (analog/digital)
Valid until 28.02.2015 :Digital TV tuner
Valid as of 01.03.2015:Tuner unit7,586DVD player
Left rear display
Right rear display
7,587Emergency call system control unit
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
7,588Valid with transmission 722.9:Intelligent servo module for DIRECT SELECT1589Trailer recognition control unit
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
3090Coolant circulation pump relay
Valid for engine 642.8 with BlueTEC:AdBlue® fuse block4091Valid for transmission 722 with ECO start/stop function:Front SAM control unit with fuse and relay module1092Valid as of 01.03.2013:KEYLESS-GO control unit
Valid as of 01.03.2013:Rear switching module
Valid until 30.11.2011:DC/AC converter control unit
15Relay
ACircuit 15 relayBCircuit 15R relay (1)CRear window heater relayDValid for diesel engine:Fuel pump relayELiftgate windshield wiper relayFSeat adjustment relayGCircuit 15R relay (2)
No.Fused componentAMR8Pyrofuse, triggered by Supplemental Restraint System control unit—MR1Electrical power steering control unit50MR2Spare—MR3Spare—MR4Fan motor for internal combustion engine and air conditioning with integrated control100MR5Valid for diesel engine:PTC heater booster150MR6Valid for front on-board electrical system battery:Front SAM control unit with fuse and relay module60MR7Front SAM control unit with fuse and relay module150PIN1Valid for left-hand drive vehicles:Blower regulator
Valid for right-hand drive vehicles:
Electronic Stability Program control unit
Premium Electronic Stability Program control unit50PIN2Valid for right-hand drive vehicles:
Electronic Stability Program control unit
Premium Electronic Stability Program control unit50PIN3AIRmatic relay
Valid with transmission 725:Fully integrated transmission control unit60MRG1Spare—MRG2Front SAM control unit with fuse and relay module100IG1Rear SAM control unit with fuse and relay module150I1Valid for front on-board electrical system battery:Rear SAM control unit with fuse and relay module100

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)

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)

WARNING:Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.

ᐅ Mercedes-Benz E-Class w212 (2009 (2024)
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