Mercedes W212 is the fourth generation of the E-class of the German brand Mercedes-Benz which was produced in 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 with both petrol and diesel engines (E200, E220 CDI, E250, E300, E350, E500, E63 AMG 4MATIC, etc.) with various body styles for the S212 station wagon and C207 coupe. During this time, the model has been restyled. In this publication, you will enter the locations of electronic control units, a detailed description of the fuses and relays Mercedes 212 with box diagrams and photo examples of their execution. Select the fuse responsible for the cigarette lighter.
The location of the blocks and the purpose of the elements in them may differ from those shown and depend on the year of manufacture and the level of electrical equipment of your car.
Contents
Location
Control units
The general layout of the control units in the Mercedes w212
Assignment
| 1 | ABS electronic control unit |
| 2 | Electronic air conditioning control unit – in the heater control panel |
| 3 | A/C/Heater Fan Motor Control Module – Near Heater Fan Motor |
| 4 | Antenna Booster 1 – C-pillar |
| 5 | Antenna Booster 2 – C-pillar |
| 6 | Anti-theft siren – Behind the front right wheel arch trim |
| 7 | Additional battery – under hollow luggage compartments |
| 8 | Additional battery – with gearshift on the steering column |
| 9 | Secondary battery relay – under hollow luggage compartments |
| 10 | Battery (except engine 273) |
| 11 | Battery (engine 273) – luggage compartment |
| 12 | Battery Current Monitor Relay (Shared with Engine Compartment Fuse/Relay Box 2) |
| 13 | Trunk lid opening/closing drive control unit – under the rear shelf |
| 14 | Diagnostic 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 | ECM (Diesel) – 651 engine |
| 20 | ECM (Diesel) – Except 651 Engine |
| 21 | Electronic engine control unit (gasoline) – engine 271 |
| 22 | Electronic engine control unit (gasoline) – except for engine 271 |
| 23 | Fuel pump control unit – under rear seat |
| 24 | Fuse/Relay Box, Engine Compartment 1 |
| 25 | Fuse/Relay Box, Engine Compartment 2 (Fusible Links in Engine Compartment Fuse Box) – Power Circuits: ABS/ESP, A/C, Air Suspension, Alternator, Booster Battery Relay, Power Steering, Cooling Fan Motor, Air Heater Heater Element inlet (Diesel), multifunction control unit 1/2, starter, SRS system |
| 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 – Underfloor – Engine 273 |
| 29 | Glow plug control unit |
| 30 | Headlight control unit, left (xenon headlights) |
| 31 | Headlight control unit, right (xenon headlights) |
| 32 | Horn 1 – behind the front bumper |
| 33 | Horn 2 – behind the front bumper |
| 34 | Ignition lock control unit |
| 35 | Control unit for central locking and engine start remote control – behind the right rear trim panel |
| 36 | Lighting control unit |
| 37 | Multifunction control box 1 – Attached to engine compartment fuse/relay box 1 – Functions: A/C compressor, A/C pressure control, brake fluid level, coolant level, headlights, alarms, windshield washer jet heaters, headlight washers, gauges turn signal, interior lamps, ambient temperature, windshield washer, windshield wipers |
| 38 | Multifunctional control unit 2- attached to the fuse/relay box in the luggage compartment 1 -functions: Anti-theft system, central locking – trunk lid, power seats, fuel filler hatch/cap, rear window defogger, seat heater, rear lights, rear seat headrests, rear window shade |
| 39 | Multifunction switch control module 1 – Functions: Auxiliary heater, front seat ventilation, front seat heater, parking assist, rear headrests, rear blind, stop-start system |
| 40 | Multifunction switch control unit 2 – functions: Air conditioning, anti-theft system, interior lamps, local illumination lamps, sunroof |
| 41 | Ambient 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 Seat |
| 45 | Seat heating control unit – behind right rear trim panel |
| 46 | Steering column electrical control unit – under the steering wheel |
| 47 | Steering column lock control unit (some models) |
| 48 | Sunroof electric control unit |
| 49 | SRS electronic control unit |
| 50 | Suspension control unit – under the mat |
| 51 | Trailer ECU – Behind Right Rear Trim Panel |
| 52 | Electronic transmission control unit (722.6) – under the mat |
| 53 | Electronic gearbox control unit (722.9) – in the gearbox |
| 54 | Gear shift control unit – selector |
| 55 | Tire pressure monitoring control unit – above the rear axle |
| 56 | Distance control (cruise control) – under the mat |
Fuse and relay boxes
Diagram
Designation
- F32 – Front input power fuse box
- N10/1 – SAM control unit with front relay and fuse box
- N10/2 – SAM control unit with rear relay and fuse box
- F33 – Rear power fuse box
- F34 – Fuse box in the cabin
Passenger compartment
Inside the Mercedes 212, the main fuse box is located at the end of the dashboard, behind a protective cover.
Diagram
Allocation
| 116 | 30A Driver’s seat control unit |
| 117 | 15A Control unit for adaptive damping system |
| 118 | Reserve |
| 119 | 7,,5A Rear fan motor |
| AMG Performance Media control unit | |
| 120 | Reserve |
| 121 | Reserve |
| 122 | Reserve |
| 123 | 10A Steering column electronic module control unit |
| 124 | Reserve |
| 125 | Reserve |
| 126 | 30A Front passenger seat control unit |
| 127 | Reserve |
| 128 | Reserve |
| 129 | 20A Oil cooler fan motor relay |
| 130 | Reserve |
| 131 | Reserve |
| 132 | Reserve |
| 133 | Reserve |
| 134 | Reserve |
| 135 | Reserve |
Engine compartment
Fuse and relay box
The main fuse and relay box under the hood is located on the left side.
Diagram
Designation
| 1 | 25A ESP control unit (left-hand drive vehicles) |
| ESP Premium electronic motion stabilization control unit (left-hand drive vehicles) | |
| Regenerative brake system control unit (left-hand drive vehicles) | |
| Fan Regulator (Right Hand Drive Vehicles) | |
| 2 | 30A Front left door control unit (up to 05/31/2010) |
| Rear left door control unit (from 06/01/2010; right-hand drive vehicles) | |
| 3 | 30A Front right door control unit (until 05/31/2010) |
| Rear right door control unit (from 06/01/2010; LHD vehicles) | |
| 4 | 20A Fuel pump control unit (engine 157) |
| 7.5A Fuel filter condensation sensor control unit with heating element (engine 651) | |
| 20A Fuel filter condensation sensor with heating element (engines 642, 651; before 05/31/2010) | |
| 5 | 7.5A Instrument cluster |
| The switch of partings of external lighting | |
| SAM control unit with fuse and relay module in the rear | |
| ESP electronic motion stabilization control unit (from 03/01/2013) | |
| ESP Premium electronic motion stabilization control unit (from 03/01/2013) | |
| 6 | 10A On vehicles with a diesel engine: |
| CDI control unit | |
| For vehicles with 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 Control unit for passenger restraint system (Supplemental Restraint System) |
| 9 | 15A Socket in glove box |
| 10 | 30A Wiper motor |
| 30A Heated wiper blades | |
| 11 | 7.5A Audio display /COMAND |
| Audio control panel /COMAND | |
| Navigation module | |
| Holder for navigation module | |
| COMAND fan motor | |
| 12 | 7.5A Climate control panel |
| Upper Control Panel Control Unit | |
| Valid for vehicles with gearbox 722, 724, 725: | |
| Automatic transmission mode button | |
| Valid with code 489 (AIRMATIC): | |
| Chassis button block | |
| 13 | 7.5A Steering column electronic module control unit |
| Multifunction camera | |
| Multifunctional stereo camera (from 03/01/2013) | |
| 14 | 7.5A Control unit for electronic stabilization system ESP |
| Control unit for electronic motion stabilization system ESP Premium | |
| 15 | 7.5A Control unit for passenger restraint system (Supplemental Restraint System) |
| 16 | 5A Electric air conditioner compressor |
| DIRECT SELECT interface (gearboxes 722.930/931) | |
| Selector lever electronic module control unit (gearboxes 722, except 722.930/931) | |
| 17 | 30A Ceiling control box |
| Panoramic sunroof control module | |
| 18 | 7.5A Switch for exterior lighting |
| Instrument panel switch block (until 02/28/2013) | |
| Upper block control panel control unit (until 02/28/2013) | |
| Auxiliary Transmission Oil Pump Relay (722 Transmissions) | |
| Power electronic equipment control unit | |
| 19 | 20A Electronic ignition lock control unit |
| Electric steering lock control unit | |
| 20 | 40A ESP control unit (left-hand drive vehicles) |
| ESP Premium electronic motion stabilization control unit (left-hand drive vehicles) | |
| Regenerative brake system control unit (left-hand drive vehicles) | |
| 21 | 7.5A Brake signal sensor (02/28/2013) |
| Hybrid brake light switch (02/28/2013) | |
| Glove box light | |
| Occupancy recognition and AKSE, front passenger seat | |
| Weight Sensing System control unit | |
| 22 | 15A Internal combustion engine fan motor air conditioner with built-in control (650W, 800W) |
| Engine 156: | |
| Electrical plug-in connection for passenger compartment and engine wiring harness | |
| Cable termination 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-in connection for passenger compartment and engine wiring harness | |
| Engines 642, 651: | |
| CDI control unit | |
| Electrical plug-in connection for passenger compartment and engine wiring harness | |
| 23 | 20A On vehicles with a diesel engine: |
| SAM control unit with fuse and relay module in the rear | |
| Engines 271, 642, 651: | |
| Cable termination terminal 87 M1e | |
| Engines 156, 157, 271, 272, 273, 274, 276, 278, 642, 651: | |
| Electrical plug-in connection for passenger compartment and engine wiring harness | |
| Engine 271: | |
| ME control unit | |
| 24 | 15A Engines 156, 157, 271, 272, 273, 274, 276, 278, 642, 651: |
| Electrical plug-in connection for passenger compartment and engine wiring harness | |
| On vehicles with a diesel engine: | |
| CDI control unit | |
| For vehicles with petrol engine: | |
| ME control unit | |
| Engines 271.958, 274.920 | |
| CNG control unit | |
| 25 | 15A Engines 642, 651: |
| Nitrogen oxide control unit after particulate filter | |
| Nitrogen oxide control unit after SCR catalytic converter | |
| Soot sensor control unit | |
| For vehicles with petrol engine: | |
| ME control unit | |
| Valid for vehicle type 212.095/098/298: | |
| Relay for the circulation pump of the gearbox oil cooling system | |
| HYBRID Power Electronics Coolant Circulation Pump Relay | |
| Engine 156: | |
| Cable termination terminal 87 M3e | |
| 26 | 20A Audio module |
| Audio module with Auto-Pilot system | |
| COMAND control module | |
| 27 | 7.5A Electronic ignition lock control unit |
| On vehicles with a diesel engine: | |
| CDI control unit | |
| For vehicles with petrol engine: | |
| ME control unit | |
| Engines 271.958, 274.920 | |
| CNG control unit | |
| 28 | 7.5A Instrument cluster |
| 29 | 10A Front right headlight (until 02/28/2013) |
| 30 | 10A Front left headlight (until 02/28/2013) |
| 31A | 15A Left horn |
| Right horn | |
| 31B | 15A Left horn |
| Right horn | |
| 32 | Electric air pump |
| 33 | 10A Control unit for automatic transmission electronic control system (gearbox 722.6) |
| 10A Fully integrated automatic transmission control unit (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 Power supply relay for HYBRID control units |
| 36 | 7.5A Night vision control unit |
| Electric control module DISTRONIC (until 02/28/2013) | |
| Far-field radar sensor, front (as of 03/01/2013) | |
| COLLISION PREVENTION ASSIST control module (from 03/01/2013) | |
| Relay | |
| J | Relay terminal 15 |
| K | Relay terminal 15R |
| L | Wiper heater relay |
| M | Terminal 50 relay, starter |
| N | Terminal 87 relay, motor |
| O | Horn relay |
| P | Catalyst purge relay (272 engines) |
| Q | Auxiliary transmission oil pump relay |
| R | Terminal 87 relay, running gear |
Power fuse box
Installed on the right side, next to the rack.
Type 1
Diagram for models without “ECO Start-Stop”
Decoding
| MR8 | Pyro-fuse, triggered by 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 integrated control (650W, 800W) |
| MR5 | 150A On vehicles with a diesel engine: |
| Additional electric heater | |
| MR6 | 60A Front SAM control box with fuse and relay module |
| MR7 | 150A Front SAM control box with fuse and relay module |
| PIN1 | 50A Fan regulator (left-hand drive vehicles) |
| Signals from the ESP control unit (right-hand drive vehicles) | |
| ESP Premium electronic motion stabilization control unit (right-hand drive vehicles) | |
| PIN2 | 50A Signals from the ESP control unit (right-hand drive vehicles) |
| ESP Premium electronic motion stabilization control unit (right-hand drive vehicles) | |
| PIN3 | 60A Relay AIRMATIC |
| Fully Integrated Transmission Control Module (725 Transmission) | |
| MRG1 | Reserve |
| MRG2 | 100A Front SAM control box with fuse and relay module |
| IG1 | 150A SAM control unit with fuse and relay module in the rear |
| I1 | 100A SAM control unit with fuse and relay module in the rear |
Type 2
Diagram for models with “ECO Start-Stop”
Assignment
| R8 | 350A Generator |
| Autonomous heater control unit | |
| MR4 | 100A Combustion engine fan motor air conditioner with built-in regulation (650W, 800W) |
| MR5 | 150A On vehicles with a diesel engine: |
| Additional electric heater | |
| MR6 | 60A Front SAM control box with fuse and relay module |
| MR7 | 150A Front SAM control box with fuse and relay module |
| MR9 | Reserve |
| MG2 | 100A Front SAM control box with fuse and relay module |
| MR3 | 80A Electric power steering control unit |
| IG1 | 150A SAM control unit with fuse and relay module in the rear |
| IM1 | 100A SAM control unit with fuse and relay module in the rear |
| PIN1 | 50A Fan regulator (left-hand drive vehicles) |
| Signals from the ESP control unit (right-hand drive vehicles) | |
| ESP Premium electronic motion stabilization control unit (right-hand drive vehicles) | |
| PIN2 | 50A Signals from the ESP control unit (right-hand drive vehicles) |
| ESP Premium electronic motion stabilization control unit (right-hand drive vehicles) | |
| PIN3 | 60A Relay AIRMATIC |
| Fully Integrated Transmission Control Module (725 Transmission) |
Type 3
Diagram for models “Hybrid”
Designation
| MR8 | Pyro-fuse, triggered by Supplemental Restraint System control unit |
| MR4 | 100A Combustion engine fan motor air conditioner with built-in regulation (650W, 800W) |
| MR5 | 150A On vehicles with a diesel engine: |
| Additional electric heater | |
| MR6 | 60A Front SAM control box with fuse and relay module |
| MR7 | 150A Front SAM control box with fuse and relay module |
| MR9 | 150A Fuse and relay module HYBRID |
| MG2 | 100A Front SAM control box with fuse and relay module |
| MR3 | 80A Electric power steering control unit |
| IG1 | 150A SAM control unit with fuse and relay module in the rear |
| IM1 | 100A SAM control unit with fuse and relay module in the rear |
| PIN1 | 50A Fan regulator (left-hand drive vehicles) |
| Regenerative brake system control unit (right-hand drive vehicles) | |
| PIN2 | 50A Regenerative brake system control unit (right-hand drive vehicles) |
| PIN3 | 60A Relay AIRMATIC |
Luggage compartment
Fuse and relay box
Installed on the right side behind the side protection.
Diagram
Allocation
| 37 | 7,5A Solenoid coil, driver seat NECK-PRO headrest |
| Solenoid Coil, Passenger Seat NECK-PRO Headrest | |
| 38 | 15A Tailgate wiper motor |
| 39 | 30A Rear left door control unit (until 05/31/2010) |
| Front left door control unit (from 06/01/2010; RHD) | |
| 40 | Reserve |
| 41 | 30A Rear right door control unit (until 05/31/2010) |
| Front right door control unit (from 06/01/2010; LHD) | |
| 42 | 25A Electric fuel pump relay |
| 25A Engines 156, 276, 278: | |
| Fuel pump control unit | |
| Engines 271, 272, 273, 274, 642, 651: | |
| Fuel pump control unit | |
| 43 | 7.5A Telecom Services Communication Module |
| 44 | 30A Switch for partially electric seat adjustment, front passenger |
| 45 | 30A Driver’s seat partially 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 monitor and towing protection | |
| Valid from 06/01/2011 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 seat belt reversible pretensioner |
| 51 | 50A Front left reversible seat belt pretensioner |
| 52 | Reserve |
| 53 | 30A Trailer detection control unit |
| 54 | 15A Trailer detection control unit |
| 55 | Reserve |
| 56 | 15A Trailer socket |
| 57 | 20A Trailer detection control unit |
| 7.5A Valid for type 212.074/075/076/077/092/274/275/276/277/292: | |
| Illuminated treadplate transformer front left | |
| Illuminated treadplate transformer front right | |
| 58 | 25A Trailer detection control unit |
| 59 | 7,5A DiStRONIC sensor (DTR) front bumper left |
| DISTRONIC sensor (dTr) front bumper right | |
| 60 | 7.5A Air pump for multicontour seat |
| 30A Air pump for multi-contour seat with dynamic support | |
| 61 | 40A Trunk lid actuator control unit |
| Tailgate control system control unit | |
| 62 | 25A Driver seat control unit |
| 63 | 25A Seat heating control unit, rear |
| 64 | 25A Front passenger seat control unit |
| 65 | 7.5A Steering wheel heating control unit (up to 02/28/2013) |
| 10A Steering column electronic module control unit (from 03/01/2013) | |
| 66 | 7.5A Rear blower motor |
| 67 | 40A Speaker amplifier control unit |
| 68 | 15A AIRMATIC control unit |
| 15A Control unit for electronic vehicle level control on the rear axle | |
| 69 | 25A Rear subwoofer amplifier |
| 70 | 5A Tire pressure monitoring control unit |
| 71 | 15A Socket in front of passenger compartment |
| Cigarette lighter with illuminated ashtray in front | |
| 72 | 15A Socket in trunk |
| 73 | 5A Diagnostic socket |
| Remote radio remote control receiver for auxiliary heater | |
| Driving modes control unit (gearbox 722.930/931) | |
| 74 | 15A KEYLESS-GO control unit |
| Valid from 01.03.2013 with code 641 (Dynamic LED headlights for left-hand traffic) or code 642 (Dynamic LED 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 (from 03/01/2013) | |
| Front right headlight | |
| DC/AC converter control unit (from 12/01/2011) | |
| 75 | 20A Auxiliary heater heater |
| 25A Oil cooler fan motor relay (156 engines:) | |
| 20A Valid from 03/01/2013 with code 641 (Dynamic LED headlights for left-hand traffic) or code 642 (Dynamic LED headlights for right-hand traffic): | |
| Front left headlight | |
| Valid from 03/01/2013 with code 631 (Static LED headlights for left-hand traffic) or code 632 (Static LED headlights for right-hand traffic): | |
| Front left headlight | |
| Front right headlight | |
| 76 | 15A Rear cup holder |
| Center console socket in the rear | |
| Electrical USB connection at the rear of the vehicle | |
| 77 | 7.5A Weight Sensing System control unit (up to 02/28/2013) |
| Navigation computer (China, Korea) | |
| Rear cup holder | |
| 78 | 7.5A Media Interface control unit |
| Media Connectivity Module | |
| 79 | 5A Radar sensors control unit (until 05/31/2010) |
| Control unit for video sensors and radar sensors (from 06/01/2010) | |
| Chassis data bus interface control unit (as of 03/01/2013) | |
| 80 | 5A Parking assistance control unit |
| 81 | 5A Antenna Amplifier / Mobile Phone Compensator |
| Mobile phone electrical plug | |
| Navigation computer (China, Korea) | |
| 82 | 10A Front left seat ventilation fan control |
| Front Right Seat Ventilation Fan Regulator | |
| 83 | 7.5A Terminal 15R cable termination |
| Navigation computer (China, Korea) | |
| Emergency call control unit | |
| Control unit “Electronic Toll Collection” (Japan) | |
| 84 | 5A Rear view camera (from 01.03.2013) |
| 360° camera control unit (from 03/01/2013) | |
| SDAR/High Definition Tuner Control Unit (SIRIUS Satellite Radio) (until 05/31/2010) | |
| Satellite Digital Audio Radio (SDAR) control unit (SIRIUS satellite radio) (from 06/01/2010) | |
| Digital audio broadcasting control unit (Digital radio (DAB) | |
| Rear view camera control unit (Japan) | |
| Rear View Camera Power Module (Japan) | |
| 85 | 7.5A TV tuner (analog/digital) (until 02/28/2015) |
| Digital TV tuner (until 02/28/2015) | |
| Tuner module (from 03/01/2015) | |
| 86 | 7.5A DVD player |
| Rear left display | |
| Rear right display | |
| 87 | 7.5A Emergency call system control unit |
| Coolant circulation pump relay (as of 06/01/2011; USA) | |
| Communication module of telecommunication services (from 01.03.2015) | |
| Multifunction control unit for special vehicle (N26/14) | |
| 88 | 15A Automatic transmission servo drive module for DIRECT SELECT system (gearbox 722.9) |
| 89 | 30A Trailer detection control unit |
| Special vehicle multifunction control unit (MSS) | |
| Fuel pump control unit (up to 02/28/2013; engine 157) | |
| Valid from 03/01/2013 with code 632 (LED static headlights for right-hand traffic) and code 494 (US version): | |
| Front right headlight | |
| Valid from 03/01/2013 with code 642 (SAE dynamic LED headlights 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 (transmission 722) |
| 92 | 15A KEYLESS-GO control unit |
| Module for keyless opening of the trunk lid under the rear bumper (from 03/01/2013) | |
| AC/DC converter control unit (until 11/30/2011) | |
| Relay | |
| A | Relay terminal 15 |
| B | Relay terminal 15R (1) |
| C | Heated rear window relay |
| D | On vehicles with a diesel engine: |
| Fuel pump relay | |
| E | Tailgate Wiper Relay |
| F | Seat adjustment relay |
| G | Relay terminal 15R (2) |
Fuses with numbers 71, 72 and 76 are responsible for the operation of the cigarette lighters.
Power fuse box
Another high power fuse box is attached to the positive terminal on the battery in trunk.
Diagram
Appointment
- F170 – Reserve
- F171 – 60A Front SAM control unit with fuse and relay module
- F172 – 100A SAM control unit with fuse and relay module in the rear
Next to the AdBlue unit (if any), additional protection elements can be installed that are responsible for its operation.
Found a mistake or have something to add – write in the comments.
what fuse controls the air raize and lower compressor
My AC/Heater fan stops working after I park the car on hot days. Do any know which relay controls this system? Or do any know of a different problem?