The Mercedes-Benz E-Class W212 generation is represented by a wide range of bodies. The first sedan (W212) went on sale in spring 2009. In May 2009, the CLK-Class coupe and cabriolet were replaced by the E-Class coupe under the index C207, and later, near the end of 2009, sales of the station wagon S212 began. The A207 cabriolet went on sale in March 2010. In this article we will understand in detail fuse box diagrams Mercedes W212 E-Class (modifications E200, E250, E300, E350, E500): 2009, 2010, 2011, 2012, 2012, 2013, 2014, 2015, 2016 years of manufacture.
Here you will find the locations and photos of the mounting blocks. Also, we will separately mark the fuses responsible for the cigarette lighter and the fuel pump.
In the engine compartment
Component locations.
Main fuse box
This fuse box is located near the windshield on the left side.
The photo is an example.
| Diagram | ||
|---|---|---|
|
||
| No. | Relay | |
| J | Terminals 15 | |
| K | Terminals 15R | |
| L | Heated wiper blades | |
| M | Terminals 50, starter | |
| N | Terminals 87, motor | |
| O | Horn (beep) relay | |
| P | Catalyst purge (272 engines) | |
| Q | Transmission oil auxiliary pump relay | |
| R | Relay terminal 87, running gear | |
| No. | A | Circuit breakers |
| 1 | 25 | ESP Premium Electronic Stability Control Module (LHD) |
| Regenerative braking system control module (left-hand drive vehicles) | ||
| Fan regulator (right-hand drive vehicles) | ||
| 2 | 30 | Front left door control module (up to 31.05.2010) |
| Rear left door control module (from 01.06.2010; vehicles with right-hand drive) | ||
| 3 | 30 | Front right door control module (up to 31.05.2010) |
| Rear right door control module (from 01.06.2010; vehicles with left-hand drive) | ||
| 4 | 20 | Fuel module control module (fuel pump fuse) (engine 157) |
| 7.5 | Fuel filter condensate sensor control module with heating element (engine 651) | |
| 20 | Condensate sensor in fuel filter with heating element (engines 642, 651; up to 31.05.2010) | |
| 5 | 7.5 | Instrument cluster |
| Outdoor lighting switch | ||
| Rear SAM control module with fuse and relay module | ||
| Control unit for electronic stability control ESP (from 01.03.2013) | ||
| 6 | 10 | Vehicles with diesel engine: CDI control unit |
| For vehicles with petrol engine: ME control unit | ||
| Engines 271.958, 274.920 Control unit CNG | ||
| 7 | 20 | Connected via starter terminal 50 relay: Starter |
| 8 | 7.5 | Passenger Restraint System Control Unit (Supplemental Restraint System) |
| 9 | 15 | Glove box socket |
| 10 | 30 | Wiper motor |
| 30 | Heated wiper blades | |
| 11 | 7.5 | Audio display / COMAND |
| Audio control panel / COMAND | ||
| Navigation unit | ||
| Holder for navigation module | ||
| Fan motor COMAND | ||
| 12 | 7.5 | Climate control system control unit |
| 7.5 | Upper Control Panel Control Module | |
| 7.5 | vehicles with gearbox 722, 724, 725: Automatic transmission drive mode key | |
| Valid with code 489 (AIRMATIC): Chassis pushbutton block | ||
| 13 | 7.5 | Steering column electronics control module |
| Multifunctional camera | ||
| Multifunctional stereo camera (from 01.03.2013) | ||
| 14 | 7.5 | ESP Electronic Stability Control Module |
| 15 | 7.5 | Supplemental Restraint System control module |
| 16 | 5 | Electric A / C Compressor |
| DIRECT SELECT interface (gearboxes 722.930 / 931) | ||
| Control module for electronic selector lever module (gearboxes 722, except 722.930/931) | ||
| 17 | 30 | Overhead Control Panel Control Module |
| Panoramic sliding sunroof control module | ||
| 18 | 7.5 | Outdoor lighting parting switch |
| Instrument panel switch module (up to 28.02.2013) | ||
| Upper control panel control unit (until 28.02.2013) | ||
| Relay for auxiliary transmission oil pump (722 gearboxes) | ||
| Power electronic equipment control unit | ||
| 19 | 20 | Electronic ignition switch control module |
| Electric steering lock control module | ||
| 20 | 40 | Electronic Stability Control (ESP) Control Module (Left Hand Drive) |
| Regenerative braking system control module (left-hand drive vehicles) | ||
| 21 | 7.5 | Brake signal sensor (28.02.2013) |
| Hybrid brake light switch (28.02.2013) | ||
| Glove compartment light | ||
| Occupancy detection system and AKSE of the front passenger seat | ||
| Weight Sensing System Control Unit | ||
| 22 | 15 | Internal combustion engine fan motor air conditioner with built-in regulation (650 W, 800 W) |
| Engine 156: | ||
| Electrical plug connection of the passenger compartment and engine wiring harness | ||
| Cable end coupling terminal 87 M2e | ||
| Engines 271, 272.98, 274.9, 276 and engine 651 (except for 4MATIC system): | ||
| Radiator louver actuator | ||
| Engines 157, 271, 272, 273, 274, 276, 278: | ||
| Electrical connector for interior wiring harness and engine wiring | ||
| Engines 642, 651: | ||
| CDI control unit | ||
| Electrical connector for interior wiring harness and engine wiring | ||
| 23 | 20 | On vehicles with diesel engine: SAM with fuse and relay module in the rear of the passenger compartment |
| Motors 271, 642, 651: Cable end coupling terminal 87 M1e | ||
| For engine 156, 157, 271, 272, 273, 274, 276, 278, 642, 651: Electrical connector for passenger compartment and engine wiring | ||
| Engine 271: ME control unit | ||
| 24 | 15 | For engine 156, 157, 271, 272, 273, 274, 276, 278, 642, 651: Electrical connector for passenger compartment and engine wiring |
| For vehicles with diesel engine: CDI | ||
| For vehicles with petrol engine: ME | ||
| Engines 271.958, 274.920 CNG | ||
| 25 | 15 | Engines 642, 651: |
| Nitrogen oxide control unit after the particulate filter | ||
| Nitrogen oxide control unit after SCR catalytic converter | ||
| Soot sensor control unit | ||
| For vehicles with petrol engine: | ||
| ME control unit | ||
| Valid for vehicles type 212.095 / 098/298: | ||
| Transmission oil cooling system circulation pump relay | ||
| HYBRID Power Electronics Coolant Circulating Pump Relays | ||
| Engine 156: | ||
| Cable end coupling terminal 87 M3e | ||
| 26 | 20 | Audio module |
| COMAND | ||
| 27 | 7.5 | Electronic ignition switch control module |
| For vehicles with diesel engine: | ||
| CDI control module | ||
| For vehicles with petrol engine: | ||
| ME control module | ||
| Engines 271.958, 274.920 | ||
| CNG control module | ||
| 28 | 7.5 | Instrument cluster |
| 29 | 10 | Front right headlamp (up to 28.02.2013) |
| 30 | 10 | Front left headlight unit (up to 28.02.2013) |
| 31A | 15 | Left horn (beep) |
| Right horn (beep) | ||
| 31B | 15 | Left horn (beep) |
| Right horn (beep) | ||
| 32 | 40 | Electric air pump |
| 33 | 10 | Automatic transmission electronic control system control unit (gearbox 722.6) |
| 10 | Control unit for fully integrated automatic transmission control system (gearboxes 722.9, 724, 725) | |
| 34 | 7.5 | Engine 156: |
| Fuel pump control module | ||
| Engines 271, 272, 273, 642, 651: | ||
| Fuel pump control module | ||
| 35 | 7.5 | Power relay for HYBRID control units |
| 36 | 7.5 | Night vision control unit |
| DISTRONIC (until 28.02.2013) | ||
| Radar distance sensor at the front (from 01.03.2013) | ||
| COLLISION PREVENTION ASSIST (from 01.03.2013) | ||
Additional fuse box
Diagram.
| With ECO start / stop system | ||
|
||
| Code | A | Description |
| R8 | 350 | Alternator |
| Auxiliary heater control unit | ||
| MR4 | 100 | Internal combustion engine fan motor air conditioner with built-in regulation (650 W, 800 W) |
| MR5 | 150 | On vehicles with diesel engine: Electric auxiliary heater |
| MR6 | 60 | Front SAM control unit with fuse and relay module |
| MR7 | 150 | |
| MR9 | - | Reserve |
| MG2 | 100 | Front SAM control unit with fuse and relay module |
| MR3 | 80 | Electric power steering control module |
| IG1 | 150 | Rear SAM control module with fuse and relay module |
| IM1 | 100 | |
| PIN1 | 50 | Fan Regulator (Left Hand Drive) |
| Signals from the control unit of the electronic stability control system ESP (right-hand drive vehicles) | ||
| Electronic Stability Control Module ESP Premium (right-hand drive vehicles) | ||
| PIN2 | 50 | Signals from the control unit of the electronic stability control system ESP (right-hand drive vehicles) |
| ESP Premium Electronic Stability Control Module (Right-Hand Drive Vehicles) | ||
| PIN3 | 60 | Relay AIRMATIC |
| Fully Integrated Transmission Control Module (725 transmission) | ||
| Without ECO start / stop system | ||
|
||
| MR8 | - | Thermal fuse, triggered by Supplemental Restraint System control unit |
| MR1 | 50 | Electric power steering control module |
| MR2 | - | Reserve |
| MR3 | - | Reserve |
| MR4 | 100 | Cooling fan motor and integrated air conditioner (650 W, 800 W) |
| MR5 | 150 | On vehicles with diesel engine : Electric auxiliary heater |
| MR6 | 60 | Front SAM control unit with fuse and relay module |
| MR7 | 150 | |
| PIN1 | 50 | Fan Regulator (Left Hand Drive) |
| Signals from the control unit of the electronic stability control system ESP (right-hand drive vehicles) | ||
| ESP Premium electronic stability control unit (right-hand drive vehicles) | ||
| PIN2 | 50 | Signals from the control unit of the electronic stability control system ESP (right-hand drive vehicles) |
| ESP Premium electronic stability control unit (right-hand drive vehicles) | ||
| PIN3 | 60 | Relay AIRMATIC |
| Fully integrated transmission control unit (725 transmission) | ||
| MRG1 | - | Reserve |
| MRG2 | 100 | Front SAM control unit with fuse and relay module |
| IG1 | 150 | Rear SAM control unit with fuse and relay module |
| I1 | 100 | |
| With hybrid engines | ||
|
||
| MR8 | - | Thermal cutout, Supplemental Restraint System control |
| MR4 | 100 | Cooling fan motor / air conditioner with integrated control (650 W, 800 W) |
| MR5 | 150 | On vehicles with diesel engine: Electric auxiliary heater |
| MR6 | 60 | Front SAM control unit with fuse and relay module |
| MR7 | 150 | |
| MR9 | 150 | Fuse and relay module HYBRID |
| MG2 | 100 | Front SAM control unit with fuse and relay module |
| MR3 | 80 | Electric power steering control unit |
| IG1 | 150 | Rear SAM control unit with fuse and relay module |
| IM1 | 100 | Rear SAM control unit with fuse and relay module |
| PIN1 | 50 | Fan Regulator (Left Hand Drive) |
| Regenerative braking system control unit (right-hand drive vehicles) | ||
| PIN2 | 50 | Regenerative braking system control unit (right-hand drive vehicles) |
| PIN3 | 60 | Relay AIRMATIC |
Separate fuse box for hybrid models
Located near the right headlight.
| Diagram | ||
|---|---|---|
|
||
| No. | A | Description |
| 130 | 5 | Regenerative braking system module |
| 131 | 5 | Battery Management System Module |
| 132 | Reserve | |
| 133 | 5 | Power electronics control module |
| 134 | 5 | Vacuum pump relay (-) |
| 135 | 7.5 | Battery Management System Module |
| 136 | 7.5 | Pyrotechnic separator |
| 137 | 7.5 | Circulation pump 1 |
| 138 | 7.5 | Circulation pump 2 |
| 139 | 7.5 | Engine 651: Transmission Coolant Circulation Pump |
| 140 | 40 | Vacuum pump relay (+) |
| 141 | Reserve | |
| 142 | Reserve | |
| S | Transmission coolant circulation pump relay | |
| T | HYBRID Control Unit Power Relay | |
| U | HYBRID Power Electronics Coolant Circulation Pump Relay | |
In the luggage compartment
Here there are two units responsible for the protection of the vehicle's electrical circuits.
Fuse box
Located on the right side behind the trim (sedan).
Behind the trim on the right (station wagon).
Photo is an example.
| Diagram | ||
|---|---|---|
|
||
| No. | Relay assignment | |
| A | Terminal 15 relay | |
| B | Terminal 15R (1) | |
| C | Rear window heating | |
| D | For vehicles with diesel engine: fuel module | |
| E | Tailgate wiper | |
| F | Seat adjustment | |
| G | Terminal 15R (2) | |
| No. | A | Purpose of fuses |
| 37 | 7.5 | Solenoid coil, NECK-PRO driver's seat head restraint |
| Solenoid coil, NECK-PRO front passenger seat head restraint | ||
| 38 | 15 | Tailgate wiper motor |
| 39 | 30 | Rear left door control unit (up to 31.05.2010) |
| Front left door control unit (from 01.06.2010; RHD) | ||
| 40 | - | Reserve |
| 41 | 30 | Rear right door control unit (up to 31.05.2010) |
| Front right door control unit (from 01.06.2010; LHD) | ||
| 42 | 25 | Electric fuel pump relay, fuel pump fuse Mercedes 212 |
| 25 | Engines 271, 272, 273, 274, 642, 651, 156, 276, 278: fuel pump control module | |
| 43 | 7.5 | Telecommunication services communication module |
| 44 | 30 | Switch for partially electrically adjusting the front passenger seat position |
| 45 | 30 | Partial electric driver's seat position adjustment switch |
| 46 | 7.5 | Antenna amplifier FM 1, AM, ZV and KEYLESS-GO |
| Valid for type 212.0 / 1: | ||
| Rear window aerial amplifier 1 | ||
| Valid for type 212.2: | ||
| DAB III antenna | ||
| Alarm siren (H3 / 1) | ||
| Interior security and towing protection system control unit | ||
| Valid from 01.06.2011 for engine 157, 276, 278: | ||
| Coolant circulation pump relay | ||
| 47 | - | Reserve Reserve |
| 48 | - | |
| 49 | 40 | The rear window heater relay is switched on: Rear window heating |
| 50 | 50 | Reversible right front seat belt tensioner |
| 51 | 50 | Front left reversible seat belt tensioner |
| 52 | - | Reserve |
| 53 | 30 | Trailer recognition control unit |
| 54 | 15 | |
| 55 | - | Reserve |
| 56 | 15 | Trailer socket |
| 57 | 20 | Trailer recognition control unit |
| 7.5 | Valid for type 212.074 / 075/076/077/092/274/275/276/277/292: | |
| Front left illuminated sill trim transformer | ||
| Sill trim transformer illuminated front right | ||
| 58 | 25 | Trailer recognition control unit |
| 59 | 7.5 | DiStRONIC sensor (DTR) front bumper left |
| DISTRONIC sensor (dTr) front bumper right | ||
| 60 | 7.5 | Multicontour seat air pump |
| 30 | Air pump of the multicontour dynamic support seat | |
| 61 | 40 | Trunk lid actuator control system control unit |
| Luggage compartment door tilt actuator control system control unit | ||
| 62 | 25 | Driver's seat control unit |
| 63 | 25 | Rear seat heating control unit |
| 64 | 25 | Front passenger seat control unit |
| 65 | 7.5 | Steering wheel heating control unit (up to 28.02.2013) |
| 10 | Electronic steering column module control unit (from 01.03.2013) | |
| 66 | 7.5 | Rear passenger compartment blower motor |
| 67 | 40 | Speaker amplifier control unit |
| 68 | 15 | AIRMATIC control unit |
| 15 | Control unit for electronic level control of the vehicle body on the rear axle | |
| 69 | 25 | Rear Woofer Amplifier |
| 70 | 5 | Tire pressure monitor control unit |
| 71 | 15 | Power outlet in the front of the passenger compartment |
| Cigarette lighter fuse Mercedes 212 | ||
| 72 | 15 | Trunk socket |
| 73 | 5 | Diagnostic connector |
| Auxiliary heater radio remote control receiver | ||
| Drive mode control unit (gearbox 722.930 / 931) | ||
| 74 | 15 | KEYLESS-GO |
| 15 | Valid from 01.03.2013 with code 641 (LED headlights dynamic for left-hand traffic) or code 642 (LED headlights dynamic for right-hand traffic): | |
| Front right headlamp | ||
| 15 | Valid with code 631 (LED static headlights for left-hand traffic) or code 632 (LED static headlights for right-hand traffic): | |
| Front left headlight block (from 01.03.2013) | ||
| Front right headlamp | ||
| 15 | DC / AC converter (from 01.12.2011) | |
| 75 | 20 | Heating device for auxiliary heater |
| 25 | Oil cooler fan motor relay (156 engines :) | |
| 20 | Valid from 01.03.2013 with code 641 (Dynamic LED headlights for left-hand drive) or code 642 (Dynamic LED headlights for right-hand drive): | |
| Front left headlamp | ||
| 20 | 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 headlamp | ||
| Front right headlamp | ||
| 76 | 15 | Rear cupholder |
| Center console socket, rear | ||
| USB electrical plug connection at the rear of the vehicle | ||
| 77 | 7.5 | Weight Sensing System control unit (until 28.02.2013) |
| Navigation computer (China, Korea) | ||
| Cup holder in the back | ||
| 78 | 7.5 | Media interface |
| Multimedia device connection module | ||
| 79 | 5 | radar sensors (up to 31.05.2010) |
| Control unit for video and radar sensors (from 01.06.2010) | ||
| Chassis data bus interface control unit (from 01.03.2013) | ||
| 80 | 5 | Parking assist control unit |
| 81 | 5 | Antenna amplifier / mobile compensator |
| Cell phone electrical plug connection | ||
| Navigation computer (China, Korea) | ||
| 82 | 10 | Left Front Seat Ventilation Fan Regulator |
| Right Front Seat Ventilation Fan Regulator | ||
| 83 | 7.5 | End sleeve, terminal 15R |
| Navigation computer (China, Korea) | ||
| Emergency call control unit | ||
| "Electronic Toll Collection" (Japan) | ||
| 84 | 5 | Rear view camera (from 01.03.2013) |
| 360 ° camera control unit (from 01.03.2013) | ||
| SDAR/High Definition Tuner Control Unit (SIRIUS Satellite Radio) (till 31.05.2010) | ||
| Satellite Digital Audio Radio (SDAR) control unit (SIRIUS Satellite Radio) (from 01.06.2010) | ||
| Digital Sound Broadcasting Control Unit (Digital Radio (DAB) | ||
| Rear view camera control unit (Japan) | ||
| Rear View Camera Power Supply Module (Japan) | ||
| 85 | 7.5 | TV tuner (analog / digital) (until 28.02.2015) |
| Digital TV tuner (until 28.02.2015) | ||
| Tuner module (from 01.03.2015) | ||
| 86 | 7.5 | DVD-player |
| Rear display, left | ||
| Display in the rear of the passenger compartment, right | ||
| 87 | 7.5 | Emergency call control unit |
| Coolant circulation pump relay (from 01.06.2011; USA) | ||
| Communication module for telecommunication services (from 01.03.2015) | ||
| Multifunctional control unit for special vehicle (N26 / 14) | ||
| 88 | 15 | Servo module for automatic gearbox for DIRECT SELECT system (gearbox 722.9) |
| 89 | 30 | Trailer recognition control unit |
| Multifunctional vehicle control unit (MSS) | ||
| Fuel pump control unit (up to 28.02.2013; engine 157) | ||
| Valid from 01.03.2013 with code 632 (LED static headlights for right-hand traffic) and code 494 (US version): | ||
| Front right headlamp | ||
| Valid from 01.03.2013 with code 642 (SAE dynamic LED headlights for right-hand traffic) and code 494 (US version): | ||
| Front left headlamp | ||
| Front right headlamp | ||
| 90 | 40 | AdBlue ® fuse box (engine 642.8) |
| Valid for type 212.076 / 276: | ||
| Coolant circulation pump relay | ||
| 91 | 10 | Front SAM control unit with fuse and relay module (transmission 722) |
| 92 | 15 | KEYLESS-GO |
| Keyless trunk lid opening module under the rear bumper (from 01.03.2013) | ||
| AC / DC converter control unit (up to 30.11.2011) | ||
Power fuse panel
The power panel is located in the luggage compartment near the battery.
| Diagram | ||
|---|---|---|
|
||
| No. | A | Appointment |
| 170 | - | Reserve |
| 171 | 60 | Front SAM control unit |
| 172 | 100 | Rear SAM control unit |
All electrical equipment
General layout of the electrical system in the Mercedes W212.
1. ABS control module;
2. Air conditioner control module - 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 the "C" pillar;
5. Antenna signal amplifier 2 - in the "C" pillar;
6. Antitheft alarm system siren - behind the wheel arch cover of the front right wheel;
7. Additional battery - under the hollow luggage compartments;
8. Additional battery - with gearshift on steering column;
9. Additional battery relay - under hollow luggage compartments;
10. Battery (except engine 273);
11. Battery (engine 273) - luggage compartment;
12. Battery amperage control relay (combined with fuse box/relay 2 in engine compartment);
13. Trunk lid opening/closing actuator control unit - under the rear shelf;
14. Diagnostic connector (DLC);
15. left front door electrical control module;
16. left rear door electrical control module;
17. right front door electrical control module;
18. right rear door electrical control module;
19. engine control module (Diesel) - engine 651;
20. Engine control module (Diesel) - except engine 651;
21. engine control module (gasoline) - engine 271;
22. engine control module (gasoline) - except engine 271;
23. Fuel pump control module - under the rear seat;
24. Fuse/relay box, engine compartment 1;
25. Additional fuse box under the hood;
26. Fuse box in the passenger compartment;
27. Fuse/relay box, luggage compartment 1 - behind the right rear trim panel;
28. Fuse box/relay box, luggage compartment 2- under the floor - engine 273;
29. glow plug control module;
30. Headlight control module, left (xenon headlamps);
31. Headlamp control module, right. (xenon headlights);
32. Horn 1 - behind the front bumper;
33. Horn 2 - behind the front bumper;
34. Ignition switch control module;
35. Control unit for the central locking and engine start remote control system - behind the right-hand rear trim panel;
36. Lighting control unit;
37. Multifunction control unit 1 - attached to fuse/relay box in engine compartment 1 - functions: A/C compressor, air conditioning pressure control , brake fluid level, coolant level, headlights, hazard warning, windshield washer nozzle heaters, headlight washers, headlight washers, turn signal indicators, interior lamps, ambient air temperature, windshield washer, windshield wipers;
38. Multifunction control unit 2- attached to fuse/relay box in luggage compartment 1 -functions: Anti-theft system, central locking-trunk lid, power seats, fuel filler flap/cover, rear window heater, seat heater, taillights, rear seat head restraints, rear window shade;
39. Multifunction switch control unit 1 - Functions: Auxiliary heater, front seat ventilation system, front seat heater, parking system, rear seat head restraints, rear window curtain, stop-start system;
40. Multifunction switch control unit 2-function: Air conditioning, anti-theft system, interior lighting lamps, local illumination lamps, sunroof;
41. Ambient air temperature sensor;
42. Parking system control module - under the mat;
43. Seat adjustment control module (left) - on the seat;
44. seat adjustment control module (right) - on the seat;
45. seat heating control module - behind the right rear trim panel;
46. steering column electrical control module - under the steering wheel;
47. steering column lock control module (some models);
48. sunroof electrical control module;
49. SRS electronic control module;
50. suspension control module - under the mat;
51. Trailer electrical control module - behind the right rear trim panel;
52. Electronic transmission control module (722.6) - under the mat;
53. Electronic transmission control module (722.9) - in the gearbox;
54. gear selector control module;
55. tire pressure monitoring system control module - above the rear axle;
56 Distance control module (cruise control) - under the mat.
