We consider fuses and relays in the Mercedes W212 car – 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 years of manufacture.
Mercedes W212 Electrical Control Unit Locations
Description
| 1 | Electronic control unit ABS |
| 2 | Electronic air conditioning control unit – in the heater control panel |
| 3 | Air conditioner/heater fan motor control unit – next to the heater fan motor |
| 4 | Antenna signal amplifier 1 – in rack “C” |
| 5 | Antenna signal amplifier 2 – in rack “C” |
| 6 | Anti-theft alarm siren – behind the front right wheel arch trim |
| 7 | Additional battery – under the hollow luggage compartments |
| 8 | Additional battery – with steering column shift |
| 9 | Additional battery relay – under hollow luggage compartments |
| 10 | Battery (except engine 273) |
| 11 | Battery (engine 273) – luggage compartment |
| 12 | Battery current monitoring relay (combined with fuse box/relay 2 in engine compartment) |
| 13 | Control unit for opening/closing drive of trunk lid – under rear shelf |
| 14 | Diagnostic Link Connector (DLC) |
| 15 | Left front door electrical control unit |
| 16 | Left rear door electrical control unit |
| 17 | Right front door electrical control unit |
| 18 | Right rear door electrical control unit |
| 19 | Electronic Engine Control Unit (Diesel) – Engine 651 |
| 20 | Electronic Engine Control Unit (Diesel) – except engine 651 |
| 21 | Electronic Engine Control Unit (Gasoline) – Engine 271 |
| 22 | Electronic engine control unit (petrol) – except engine 271 |
| 23 | Fuel pump control unit – under the rear seat |
| 24 | Fuse/Relay Box, Engine Compartment 1 |
| 25 | Fuse/Relay Box, Engine Compartment 2 (Fuse links in the fuse box in the engine compartment) – Supply circuits: ABS/ESP, Air Conditioning, Air Suspension, Alternator, Auxiliary Battery Relay, Electric Power Steering, Radiator Fan Motor, Intake Air Heater Heating Element (Diesel), Multifunction Control Module 1/2, Starter, SRS |
| 26 | Fuse/Relay Box, Instrument Panel |
| 27 | Fuse/Relay Box, Luggage Compartment 1 – Behind Right Rear Trim Panel |
| 28 | Fuse/Relay Box, Luggage Compartment 2 – Under Floor – Engine 273 |
| 29 | Glow Plug Control Unit |
| 30 | Headlight control unit, left (xenon headlights) |
| 31 | Headlight control unit, right (xenon headlights) |
| 32 | Sound signal 1 – behind the front bumper |
| 33 | Sound signal 2 – behind the front bumper |
| 34 | Ignition switch control unit |
| 35 | Control unit for remote central locking and engine start system – behind the right rear trim panel |
| 36 | Lighting control unit |
| 37 | Multi-function control unit 1 – attached to the fuse/relay box in the engine compartment 1 – functions: A/C compressor, A/C pressure monitor, brake fluid level, coolant level, headlights, hazard warning lights, windshield washer nozzle heaters, headlight washers, turn signals, interior lights, ambient air temperature, windshield washer, windshield wipers |
| 38 | Multifunction control unit 2 – attached to the fuse/relay box in the luggage compartment 1 – functions: Anti-theft alarm system, central locking – trunk lid, electric seats, fuel filler flap/cap, rear window heater, seat heater, tail lights, rear seat head restraints, rear window blind |
| 39 | Multifunction switch control unit 1 – functions: Additional heater, front seat ventilation system, front seat heater, parking system, rear seat head restraints, rear window blind, stop-start system |
| 40 | Multifunction switch control unit 2 – functions: Air conditioning, anti-theft system, interior lighting, local lighting, sunroof |
| 41 | Ambient air temperature sensor |
| 42 | Parking system control unit – under the mat |
| 43 | Seat adjustment control unit (left) – on the seat |
| 44 | Seat adjustment control unit (right) – on the seat |
| 45 | Seat heating control unit – behind the right rear trim panel |
| 46 | Steering column electrical control unit – under the steering wheel |
| 47 | Steering Column Lock Control Unit (Some Models) |
| 48 | Electric sunroof drive control unit |
| 49 | SRS Electronic Control Unit |
| 50 | Suspension control unit – under the mat |
| 51 | Trailer electrical control unit – behind the right rear trim panel |
| 52 | Electronic control unit of the gearbox (722.6) – under the mat |
| 53 | Electronic control unit of the gearbox (722.9) – in the gearbox |
| 54 | Gear Shift Control Unit – Selector |
| 55 | Tire pressure monitoring system control unit – above rear axle |
| 56 | Distance control unit (cruise control) – under the mat |
Where are the fuses and relays on a Mercedes W212
Description
- F32 – Front Input Power Fuse Block
- N10/1 – SAM control unit with front relay and fuse module
- N10/2 – SAM control unit with rear relay and fuse module
- F33 – Rear power fuse box
- F34 – Passenger compartment fuse box
Fuses in the cabin of Mercedes W212
The fuse box is located on the end of the control panel on the driver’s side. To access it, you need to remove the protective cover.
Cabin Fuse Box Diagram
Description
| 116 | 30A Driver’s seat control unit (before 31.05.09) |
| 117 | 15A Adaptive Damping System Control Unit (up to 31.05.09) |
| 118 | Reserve |
| 119 | 7,,5A Rear passenger compartment fan motor (up to 31.05.09) |
| AMG Performance Media Control Unit (up to 1.6.12) | |
| 120 | Reserve |
| 121 | Reserve |
| 122 | Reserve |
| 123 | 10A Electronic Steering Column Module Control Unit |
| 124 | Reserve |
| 125 | Reserve |
| 126 | 30A Front passenger seat control unit (before 31.05.09) |
| 127 | Reserve |
| 128 | Reserve |
| 129 | 20A Oil cooler fan motor relay (engine 156; up to 31.05.09) |
| 130 | Reserve |
| 131 | Reserve |
| 132 | Reserve |
| 133 | Reserve |
| 134 | Reserve |
| 135 | Reserve |
Fuses and relays under the hood Mercedes W212
The engine compartment fuse box is located on the left side of the engine compartment.
Under Hood Fuse and Relay Box Diagram
Description
| 1 | 25A Electronic Stability Program (ESP) control unit (left-hand drive vehicles) |
| Electronic Stability Program (ESP) Premium Control Unit (left-hand drive vehicles) | |
| Regenerative braking system control unit (left-hand drive vehicles) | |
| Fan controller (right hand drive vehicles) | |
| 2 | 30A Front left door control unit (before 31.05.2010) |
| Rear left door control unit (since 01.06.2010; right-hand drive vehicles) | |
| 3 | 30A Front right door control unit (before 31.05.2010) |
| Rear right door control unit (since 01.06.2010; left-hand drive vehicles) | |
| 4 | 20A Fuel Pump Control Unit (Engine 157) |
| 7.5A Fuel Filter Condensate Sensor Control Unit with Heating Element (Engine 651) | |
| 20A Fuel filter condensate sensor with heating element (engines 642, 651; up to 31.05.2010) | |
| 5 | 7.5A Instrument cluster |
| Outdoor lighting switch | |
| SAM control unit with fuse and relay module in the rear compartment | |
| Electronic Stability Program (ESP) control unit (since 01.03.2013) | |
| Control unit for electronic stability control system ESP Premium (since 01.03.2013) | |
| 6 | 10A For vehicles with diesel engines: |
| CDI control unit | |
| For vehicles with a petrol engine: | |
| ME control unit | |
| Engines 271.958, 274.920 | |
| CNG control unit | |
| 7 | 20A Connected via starter terminal 50 relay: Starter |
| 8 | 7.5A Supplemental Restraint System Control Unit |
| 9 | 15A Socket in Glove Box |
| 10 | 30A Windscreen Wiper Motor |
| 30A Windscreen wiper heating | |
| 11 | 7.5A Audio display /COMAND |
| Audio control panel /COMAND | |
| Navigation module | |
| Holder for navigation module | |
| COMAND Fan Motor | |
| 12 | 7.5A Climate control unit control panel |
| Upper control panel control unit | |
| Valid for vehicles with gearbox 722, 724, 725: | |
| Automatic transmission driving mode key | |
| Valid with code 489 (AIRMATIC): | |
| Chassis Button Block | |
| 13 | 7.5A Electronic Steering Column Module Control Unit |
| Multifunctional camera | |
| Multifunctional stereo camera (since 01.03.2013) | |
| 14 | 7.5A Electronic Stability Program (ESP) Control Unit |
| Control unit of the electronic stability control system ESP Premium | |
| 15 | 7.5A Supplemental Restraint System Control Unit |
| 16 | 5A Electric Air Conditioning Compressor |
| DIRECT SELECT interface (gearboxes 722.930/931) | |
| Electronic selector lever module control unit (gearboxes 722, except 722.930/931) | |
| 17 | 30A Ceiling Control Panel Control Unit |
| Panoramic sunroof control module with sliding sunroof | |
| 18 | 7.5A Outdoor Lighting Switch |
| Instrument panel switch block (before 28.02.2013) | |
| Control unit of the upper control panel (before 28.02.2013) | |
| Auxiliary transmission oil pump relay (722 gearboxes) | |
| Power electronic equipment control unit | |
| 19 | 20A Electronic ignition switch control unit |
| Electric steering lock control unit | |
| 20 | 40A Electronic Stability Program (ESP) control unit (left-hand drive vehicles) |
| Electronic Stability Program (ESP) Premium Control Unit (left-hand drive vehicles) | |
| Regenerative braking system control unit (left-hand drive vehicles) | |
| 21 | 7.5A Brake Light Sensor (02/28/2013) |
| Hybrid Brake Light Switch (02/28/2013) | |
| Glove compartment light | |
| Front passenger seat occupancy recognition system and AKSE | |
| Weight Sensing System Control Unit | |
| 22 | 15A Electric motor for combustion engine fan air conditioner with built-in regulation (650W, 800W) |
| Engine 156: | |
| Electrical plug connection of the interior and engine wiring harness | |
| Cable termination joint terminal 87 M2e | |
| Engines 271, 272.98, 274.9, 276 and engine 651 (except 4MATIC system): | |
| Radiator shutter actuator | |
| Engines 157, 271, 272, 273, 274, 276, 278: | |
| Electrical plug connection of the interior and engine wiring harness | |
| Engines 642, 651: | |
| CDI control unit | |
| Electrical plug connection of the interior and engine wiring harness | |
| 23 | 20A For vehicles with diesel engines: |
| SAM control unit with fuse and relay module in the rear compartment | |
| Engines 271, 642, 651: | |
| Cable end joint terminal 87 M1e | |
| Engines 156, 157, 271, 272, 273, 274, 276, 278, 642, 651: | |
| Electrical plug connection of the interior and engine wiring harness | |
| Engine 271: | |
| ME control unit | |
| 24 | 15A Engines 156, 157, 271, 272, 273, 274, 276, 278, 642, 651: |
| Electrical plug connection of the interior and engine wiring harness | |
| For vehicles with diesel engines: | |
| CDI control unit | |
| For vehicles with a petrol engine: | |
| ME control unit | |
| Engines 271.958, 274.920 | |
| CNG control unit | |
| 25 | 15A Motors 642, 651: |
| Nitrogen oxide control unit after diesel particulate filter | |
| Nitrogen Oxide Control Unit After SCR Catalytic Converter | |
| Soot Sensor Control Unit | |
| For vehicles with a petrol engine: | |
| ME control unit | |
| Valid for vehicle type 212.095/098/298: | |
| Relay of the circulation pump of the gearbox oil cooling system | |
| Relays for coolant circulation pumps of power electronic equipment HYBRID | |
| Engine 156: | |
| Cable end joint terminal 87 M3e | |
| 26 | 20A Audio Module |
| Audio module with Auto-Pilot system | |
| COMAND control module | |
| 27 | 7.5A Electronic ignition switch control unit |
| For vehicles with diesel engines: | |
| CDI control unit | |
| For vehicles with a petrol engine: | |
| ME control unit | |
| Engines 271.958, 274.920 | |
| CNG control unit | |
| 28 | 7.5A Instrument cluster |
| 29 | 10A Front right headlight (before 28.02.2013) |
| 30 | 10A Front left headlight (before 28.02.2013) |
| 31A | 15A Left horn |
| Right horn | |
| 31B | 15A Left horn |
| Right horn | |
| 32 | Electric air pump |
| 33 | 10A Electronic control unit for automatic transmission (gearbox 722.6) |
| 10A Control unit for fully integrated automatic transmission control system (gearboxes 722.9, 724, 725) | |
| 34 | 7.5A Engine 156: |
| Fuel pump control unit | |
| Engines 271, 272, 273, 642, 651: | |
| Fuel pump control unit | |
| 35 | 7.5A HYBRID control unit power supply relay |
| 36 | 7.5A Night Vision Control Unit |
| Electrical control module DISTRONIC (before 28.02.2013) | |
| Front long-range radar sensor (since 01.03.2013) | |
| COLLISION PREVENTION ASSIST control module (since 01.03.2013) | |
| Relay | |
| J | Relay terminal 15 |
| K | Relay terminal 15R |
| L | Windscreen wiper heating relay |
| M | Relay terminal 50, starter |
| N | Relay terminal 87, engine |
| O | Horn relay |
| P | Catalytic converter purge relay (272 engines) |
| Q | Auxiliary transmission oil pump relay |
| R | Relay terminal 87, chassis |
On the right side of the engine compartment, next to the pillar, a power fuse box is installed.
Underhood fuse box diagram without ECO Start-Stop
Description
| MR8 | Pyro fuse, triggered by the Supplemental Restraint System control unit |
| MR1 | 50A Electric Power Steering Control Unit |
| MR2 | Reserve |
| MR3 | Reserve |
| MR4 | 100A Combustion Engine Fan Motor and Air Conditioner with Built-in Regulation (650W, 800W) |
| MR5 | 150A For vehicles with diesel engines: |
| Additional electric heater | |
| MR6 | 60A Front SAM Control Unit with Fuse and Relay Module |
| MR7 | 150A Front SAM Control Unit with Fuse and Relay Module |
| PIN1 | 50A Fan Controller (Left Hand Drive Vehicles) |
| Signals from the ESP electronic stability control unit (right-hand drive vehicles) | |
| Electronic Stability Program (ESP) Premium Control Unit (Right Hand Drive Vehicles) | |
| PIN2 | 50A Signals from the ESP electronic stability control unit (right-hand drive vehicles) |
| Electronic Stability Program (ESP) Premium Control Unit (Right Hand Drive Vehicles) | |
| PIN3 | 60A AIRMATIC Relay |
| Control unit for fully integrated transmission control system (725 transmission) | |
| MRG1 | Reserve |
| MRG2 | 100A Front SAM Control Unit with Fuse and Relay Module |
| IG1 | 150A SAM Control Unit with Rear Fuse and Relay Module |
| I1 | 100A SAM Control Unit with Rear Fuse and Relay Module |
Underhood fuse box diagram with ECO Start-Stop module
Description
| R8 | 350A Generator |
| Autonomous heater control unit | |
| MR4 | 100A Electric motor for combustion engine fan air conditioner with built-in regulation (650W, 800W) |
| MR5 | 150A For vehicles with diesel engines: |
| Additional electric heater | |
| MR6 | 60A Front SAM Control Unit with Fuse and Relay Module |
| MR7 | 150A Front SAM Control Unit with Fuse and Relay Module |
| MR9 | Reserve |
| MG2 | 100A Front SAM Control Unit with Fuse and Relay Module |
| MR3 | 80A Electric Power Steering Control Unit |
| IG1 | 150A SAM Control Unit with Rear Fuse and Relay Module |
| IM1 | 100A SAM Control Unit with Rear Fuse and Relay Module |
| PIN1 | 50A Fan Controller (Left Hand Drive Vehicles) |
| Signals from the ESP electronic stability control unit (right-hand drive vehicles) | |
| Electronic Stability Program (ESP) Premium Control Unit (Right Hand Drive Vehicles) | |
| PIN2 | 50A Signals from the ESP electronic stability control unit (right-hand drive vehicles) |
| Electronic Stability Program (ESP) Premium Control Unit (Right Hand Drive Vehicles) | |
| PIN3 | 60A AIRMATIC Relay |
| Control unit for fully integrated transmission control system (725 transmission) |
Hybrid Underhood Fuse Box Wiring Diagram
Description
| MR8 | Pyro fuse, triggered by the Supplemental Restraint System control unit |
| MR4 | 100A Electric motor for combustion engine fan air conditioner with built-in regulation (650W, 800W) |
| MR5 | 150A For vehicles with diesel engines: |
| Additional electric heater | |
| MR6 | 60A Front SAM Control Unit with Fuse and Relay Module |
| MR7 | 150A Front SAM Control Unit with Fuse and Relay Module |
| MR9 | 150A Fuse and Relay Module HYBRID |
| MG2 | 100A Front SAM Control Unit with Fuse and Relay Module |
| MR3 | 80A Electric Power Steering Control Unit |
| IG1 | 150A SAM Control Unit with Rear Fuse and Relay Module |
| IM1 | 100A SAM Control Unit with Rear Fuse and Relay Module |
| PIN1 | 50A Fan Controller (Left Hand Drive Vehicles) |
| Regenerative braking system control unit (right-hand drive vehicles) | |
| PIN2 | 50A Regenerative Brake Control Unit (Right Hand Drive Vehicles) |
| PIN3 | 60A AIRMATIC Relay |
Fuses and relays in the luggage compartment of the Mercedes W212
In the luggage compartment, the fuse and relay box is located on the right side behind the trim.
Trunk Fuse and Relay Box Diagram
Description
| 37 | 7.5A Electromagnet Coil, NECK-PRO Driver Seat Headrest |
| Electromagnet coil, NECK-PRO headrest, front passenger seat | |
| 38 | 15A Tailgate Windscreen Wiper Motor |
| 39 | 30A Rear left door control unit (before 31.05.2010) |
| Front left door control unit (since 01.06.2010; RHD) | |
| 40 | Reserve |
| 41 | 30A Rear right door control unit (before 31.05.2010) |
| Front right door control unit (since 01.06.2010; LHD) | |
| 42 | 25A Fuel Pump Relay |
| 25A Motors 156, 276, 278: | |
| Fuel pump control unit | |
| Engines 271, 272, 273, 274, 642, 651: | |
| Fuel pump control unit | |
| 43 | 7.5A Telecommunication Services Communication Module |
| 44 | 30A Front passenger seat semi-electric adjustment switch |
| 45 | 30A Driver’s seat semi-electric adjustment switch |
| 46 | 7.5A Antenna amplifier FM 1, AM, ZV and KEYLESS-GO |
| Valid for type 212.0/1: | |
| Antenna amplifier 1 rear window | |
| Valid for type 212.2: | |
| DAB III band antenna | |
| Alarm siren (H3/1) | |
| Control unit for interior security and towing protection system | |
| Valid from 01.06.2011 for engine 157, 276, 278: | |
| Coolant circulation pump relay | |
| 47 | Reserve |
| 48 | Reserve |
| 49 | 40A The rear window heating relay switches on: Rear window heating |
| 50 | 50A Front Right Reversible Seat Belt Tensioner |
| 51 | 50A Front Left Reversible Seat Belt Pretensioner |
| 52 | Reserve |
| 53 | 30A Trailer Recognition Control Unit |
| 54 | 15A Trailer Recognition Control Unit |
| 55 | Reserve |
| 56 | 15A Trailer Socket |
| 57 | 20A Trailer Recognition Control Unit |
| 7.5A Valid for type 212.074/075/076/077/092/274/275/276/277/292: | |
| Transformer door sill trims with illumination front left | |
| Transformer door sill trims with illumination front right | |
| 58 | 25A Trailer Recognition Control Unit |
| 59 | 7.5A DiStRONIC (DTR) sensor front bumper left |
| DISTRONIC (dTr) sensor, front bumper right | |
| 60 | 7.5A Multi-contour Seat Air Pump |
| 30A Pneumatic pump for multi-contour seat with dynamic support | |
| 61 | 40A Tailgate Drive Control Unit |
| Control unit for tailgate drive control system | |
| 62 | 25A Driver Seat Control Unit |
| 63 | 25A Rear seat heating control unit |
| 64 | 25A Front Passenger Seat Control Module |
| 65 | 7.5A Steering wheel heating control unit (before 28.02.2013) |
| 10A Electronic steering column module control unit (since 01.03.2013) | |
| 66 | 7.5A Rear Cabin Blower Motor |
| 67 | 40A Speaker Amplifier Control Unit |
| 68 | 15A AIRMATIC control unit |
| 15A Electronic level control system control unit for the rear axle | |
| 69 | 25A Rear Woofer Amplifier |
| 70 | 5A Tire pressure monitoring system control unit |
| 71 | 15A Socket in Front of Cabin |
| Cigarette lighter with illuminated ashtray in front | |
| 72 | 15A Socket in the Trunk |
| 73 | 5A Diagnostic socket |
| Receiver for remote control radio for autonomous heater | |
| Drive mode control unit (gearbox 722.930/931) | |
| 74 | 15A KEYLESS-GO Control Unit |
| Valid from 01.03.2013 with code 641 (LED dynamic headlights for left-hand traffic) or code 642 (LED dynamic headlights for right-hand traffic): | |
| Front right headlight | |
| Valid with code 631 (LED headlights, static, for left-hand traffic) or code 632 (LED headlights, static, for right-hand traffic): | |
| Front left headlight (since 01.03.2013) | |
| Front right headlight | |
| DC/AC converter control unit (since 01.12.2011) | |
| 75 | 20A Heating device of independent heater |
| 25A Oil Cooler Fan Motor Relay (156 Engines:) | |
| 20A Valid from 01.03.2013 with code 641 (LED dynamic headlights for left-hand traffic) or code 642 (LED dynamic headlights for right-hand traffic): | |
| Front left headlight | |
| Valid from 01.03.2013 with code 631 (LED static headlights for left-hand traffic) or code 632 (LED static headlights for right-hand traffic): | |
| Front left headlight | |
| Front right headlight | |
| 76 | 15A Rear Cup Holder |
| Power outlet in the center console in the rear of the cabin | |
| Electrical USB plug connection at the rear of the vehicle | |
| 77 | 7.5A Weight Sensing System Control Unit (until 28.02.2013) |
| Navigation computer (China, Korea) | |
| Cup holder at the back | |
| 78 | 7.5A Media Interface Control Unit |
| Multimedia device connection module | |
| 79 | 5A Radar sensor control unit (before 31.05.2010) |
| Control unit for video and radar sensors (since 01.06.2010) | |
| Chassis data bus interface control unit (since 01.03.2013) | |
| 80 | 5A Parking assistance control unit |
| 81 | 5A Mobile Antenna Amplifier/Compensator |
| Electrical plug connection of a mobile phone | |
| Navigation computer (China, Korea) | |
| 82 | 10A Front Left Seat Ventilation Fan Control |
| Front right seat ventilation fan control | |
| 83 | 7.5A Cable End Cap Terminal 15R |
| Navigation computer (China, Korea) | |
| Emergency call system control unit | |
| Control unit “Electronic Toll Collection” (Japan) | |
| 84 | 5A Rear view camera (from 01.03.2013) |
| 360° camera control unit (since 01.03.2013) | |
| SDAR/HD Tuner Control Unit (SIRIUS Satellite Radio) (until 31.05.2010) | |
| Satellite Digital Audio Radio (SDAR) Control Unit (SIRIUS Satellite Radio) (since 01.06.2010) | |
| Digital Audio Broadcasting (DAB) Control Unit | |
| Rear view camera control unit (Japan) | |
| Rear View Camera Power Module (Japan) | |
| 85 | 7.5A TV tuner (analog/digital) (until 28.02.2015) |
| Digital TV tuner (until 28.02.2015) | |
| Tuner module (since 01.03.2015) | |
| 86 | 7.5A DVD Player |
| Display in the rear of the cabin on the left | |
| Display in the rear of the cabin on the right | |
| 87 | 7.5A Emergency Call System Control Unit |
| Coolant circulation pump relay (since 01.06.2011; USA) | |
| Communication module of telecommunication services (since 01.03.2015) | |
| Multifunctional control unit for special vehicle (N26/14) | |
| 88 | 15A Automatic transmission servo module for DIRECT SELECT system (gearbox 722.9) |
| 89 | 30A Trailer Recognition Control Unit |
| Multifunctional control unit of special vehicle (MSS) | |
| Fuel pump control unit (before 28.02.2013; engine 157) | |
| Valid from 01.03.2013 with code 632 (LED headlights, static, for right-hand traffic) and code 494 (US version): | |
| Front right headlight | |
| Valid from 01.03.2013 with code 642 (LED headlights dynamic SAE for right-hand traffic) and code 494 (US version): | |
| Front left headlight | |
| Front right headlight | |
| 90 | 40A AdBlue® Fuse Box (Engine 642.8) |
| Valid for type 212.076/276: | |
| Coolant circulation pump relay | |
| 91 | 10A Front SAM Control Unit with Fuse and Relay Module (722 Transmission) |
| 92 | 15A KEYLESS-GO Control Unit |
| Keyless trunk lid opening module under the rear bumper (since 01.03.2013) | |
| AC/DC Converter Control Unit (before 11/30/2011) | |
| Relay | |
| A | Relay terminal 15 |
| B | Relay terminal 15R (1) |
| C | Rear window heating relay |
| D | For vehicles with diesel engines: |
| Fuel pump relay | |
| E | Trunk Wiper Relay |
| F | Seat Position Adjustment Relay |
| G | Relay terminals 15R (2) |
Trunk fuse box diagram
Description
- F170 – Reserve
- F171 – 60A Front SAM Control Module with Fuse and Relay Module
- F172 – 100A SAM control unit with rear fuse and relay module
Mercedes W212 fuses and relays. Mercedes W212 fuse diagram.