Mercedes-Benz 211 body represents the 3rd generation of E-class cars which were produced in 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 with both petrol and diesel engines (E200, E220, E230, E240, E270, E280, E300, E320, E350, E400, E420, E500, E55 & E63 AMG) and w211 sedan and S211 station wagon. During this time, the model has been restyled. In this material, we will show the locations of all electronic control units, a description of the fuses and relays of the Mercedes 211 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
Layout
Assignment
| 1 | ABS electronic control unit β> 31/05/06 |
| 2 | ABS electronic control unit – 01/06/06^ |
| 3 | Antenna booster – audio/navigation system |
| 4 | Antenna booster 1 (TV tuner) – rear window |
| 5 | Antenna booster 2 (TV tuner) – C-pillar left (sedan) – tailgate left pillar (station wagon) |
| 6 | Antenna Amplifier 3 (TV Tuner) – RH C-pillar (Saloon) – RH C-pillar (Station Wagon) |
| 7 | Impact sensor, left – behind the headlight |
| 8 | Impact sensor, right – behind the headlight |
| 9 | Side Impact Sensor Assembly LH – B Pillar |
| 10 | Side impact sensor assembly, right – B-pillar |
| 11 | Anti-theft control unit – LH side luggage compartment (integrated with multifunction control unit 2) |
| 12 | Anti-theft horn – Behind wheel arch trim |
| 13 | Sunlight sensor – top center windshield |
| 14 | Additional battery -> 31/05/06 if available |
| 15 | Additional battery -> 31/05/06 if available |
| 16 | Additional heater control unit |
| 17 | Auxiliary Heater Remote Control Receiver – Luggage Compartment Right Side |
| 18 | Battery – under the floor of the luggage compartment |
| 19 | Battery control unit – luggage compartment, under floor |
| 20 | Trunk lid opening/closing drive control unit |
| 21 | CAN data bus, gateway control unit |
| 22 | Diagnostic connector (DLC) |
| 23 | Left front door electrical control unit |
| 24 | Left rear door electrical control unit |
| 25 | Right front door electrical control unit |
| 26 | Right rear door electrical control unit |
| 27 | Electronic Engine Control Unit – Diesel/112/113 |
| 28 | Electronic Engine Control Unit – 271 |
| 29 | Electronic Engine Control Unit – 272/273 |
| 30 | Fuse/Relay Box, Engine Compartment |
| 31 | Fuse box/relay dashboard |
| 32 | Fuse/Relay Box, Footwell |
| 33 | Fuse/Relay Box, Luggage Compartment |
| 34 | Fuse box/relay spare wheel well |
| 35 | Headlight control unit, left (models with xenon headlights) |
| 36 | Headlight control unit, right (models with xenon headlights) |
| 37 | Headlight range control unit – under the right front seat, under the carpet (models with xenon headlights) |
| 38 | Horn 1 – Behind the grille |
| 39 | Horn 2 – behind the front bumper |
| 40 | Ignition lock control unit |
| 41 | Electronic immobilizer control unit (combined with ignition lock control unit) |
| 42 | Keyless entry system control unit – behind the ashtray |
| 43 | Lighting control unit – behind the headlight switch |
| 44 | Luggage compartment loading control unit (station wagon) – for hollow luggage compartments |
| 45 | Multifunction Control Module 1 – Attached to Engine Compartment Fuse/Relay Box – Functions: A/C Pressure Control, Brake Fluid Level, Coolant Level, Front Lights, Headlight Washers, Horns, Interior Lamps, Outside Temperature, Windshield Wipers |
| 46 | Multi-Function Control Unit 2-connected to Fuse/Relay Box, Luggage Compartment – Functions: Anti-theft system, tailgate/trunk lid release, central locking, fuel level, fuel pump, alarm, rear window defogger, direction indicators, rear lighting |
| 47 | Multifunction control unit 3 – in the multifunction switch control unit (overhead console) – functions: Volume change sensors (anti-theft system), sunlight sensor, interior lamps, rain sensor |
| 48 | Multi-functional control unit 4-in the multi-function switch control unit (dashboard) – functions: air conditioning control unit, central locking, alarm, rear window wiper |
| 49 | Multi-function control unit 5-in multi-function switch control unit (center console) – functions: Auxiliary heater switch, parking system, active suspension system, tailgate/trunk lid switch |
| 50 | Multifunctional Control Unit 6 – Footwell, Under Floor Mat – Functions: Coolant Pump Motor, Fog Lights, Seat Heaters, Reversing Lights, Gear Selector |
| 51 | Multifunctional control unit 7 – in the rear interior lamp (with a transparent roof) – functions: Interior lamps |
| 52 | Navigation system control unit |
| 53 | Ambient temperature sensor |
| 54 | Parking system control unit – luggage compartment left side |
| 55 | Rain sensor – upper center windshield |
| 56 | Power seat control unit, front left – under the seat |
| 57 | Power seat control unit, front right – under the seat |
| 58 | Head restraint relay (01/06/05^) |
| 59 | Solar battery control unit – behind the instrument cluster |
| 60 | Steering column electrical control unit – behind the steering wheel |
| 61 | Steering column lock control unit – built into the ignition lock control unit |
| 62 | Steering wheel position sensor – in the control unit for electrical equipment of the steering column |
| 63 | Heated steering wheel control unit – near instrument cluster (^05/05) |
| 64 | Power sunroof control unit -in multifunction switch control unit (overhead console) |
| 65 | Electronic SRS control unit |
| 66 | Active suspension control unit – legroom, under floor mat |
| 67 | Rear Door Open/Close Control Module – LH Side of Luggage Compartment |
| 68 | phone antenna |
| 69 | Telephone interface control unit – under the panel, in the rear of the luggage compartment |
| 70 | Trailer Electrical Control Module – LH Luggage Compartment |
| 71 | Electronic Transmission Control Unit (Sequential Manual Transmission) – Footwell, Under Floor Mat |
| 72 | Electronic Transmission Control Module – Footwell, Under Floor Mat |
| 73 | Tire pressure monitoring control unit – luggage compartment left side |
| 74 | Voice activation system unit – under the panel, in the rear of the luggage compartment |
| 75 | Lateral movement sensor |
Engine compartment
Under the hood, the main fuse and relay box is located on the left side, next to the rack and is closed with a protective cover.
Diagram
Designation
| 43 | 15A ME control unit (engines 112, 113, 156, 271, 272, 273) |
| CDI system control unit (engines 628, 629, 642, 646, 647, 648) | |
| SAM control unit with rear relay and fuse box (engines 629, 642, 646, 647, 648) | |
| SAM control unit with relay and fuse module on the driver’s side (engines 629, 642) | |
| 44 | 15A CDI system control unit (engines 646, 647, 648) |
| ME control unit (engines 271, 272, 273) | |
| Gas supply valve cyl. 1 (engine 271 CNG) | |
| Gas supply valve cyl. 2 (engine 271 CNG) | |
| Gas supply valve cyl. 3 (engine 271 CNG) | |
| Gas supply valve cyl. 4 (engine 271 CNG) | |
| 45 | 7,5A AIRmatic control unit with ADS system |
| Rear axle body level control unit | |
| Selector lever electronic module control unit (5-speed automatic transmission (NAG)) | |
| Selector Lever Position Sensor (Sequentronic Semi-Automatic (ASG)) | |
| 46 | 7.5A EGS control unit (5-speed automatic transmission (NAG)) |
| Semi-automatic gearbox control unit (Sequentronic (ASG)) | |
| Electric control module VGS (7-speed automatic transmission) | |
| 47 | 5A Control unit for ESP, PML and BAS systems |
| 48 | 7.5A SRS control unit |
| Front left reversible seat belt pretensioner (since 2007) | |
| Front right reversible seat belt pretensioner (since 2007) | |
| 49 | 7.5A SRS control unit |
| Passenger/Child Seat Recognition Sensor on the Front Passenger Seat | |
| Head restraint relay NECK-PRO | |
| 50 | 5A Electrical connector mobile phone chain |
| Power supply disconnect point VICS (Japan) | |
| Emergency call system control unit (since 2007; USA) | |
| 51 | 5A Not used |
| 52 | 7.5A Exterior lighting rotary switch |
| instrument cluster | |
| Glove box lighting with microswitch | |
| Headlight range control unit (Bi-Xenon headlights) | |
| Suction fan for engine and air conditioner with integrated regulator (since 2007) | |
| 53a | Not used |
| 53b | 15A Horn relay |
| 54a | 15A Cigarette lighter |
| 54b | 15A Illuminated cigarette lighter |
| 55 | 7.5A Telephone (standard telephone “MB”) |
| Bluetooth module plug connection (standard telephone “MB”) | |
| Electrical connector mobile phone chain | |
| Emergency call system control unit (since 2007; USA) | |
| 56 | 40A Wiper motor (M6/1) |
| 57 | 25A CDI system control unit (engines 628, 646, 647, 648) |
| Suction electric fan for engine and air conditioner with integrated regulator (engines 271, 272, 273) | |
| Me control unit (engines 271, 272, 273) | |
| Regeneration change-over valve (engines 271, 272, 273) | |
| PremAir system sensor (engines 271, 272, 273) | |
| Canister Canister Shutoff Valve (USA) | |
| 58 | 15A Engines 112, 113, 156: |
| Cylinder 1 ignition coil | |
| Cylinder 2 ignition coil | |
| Cylinder 3 ignition coil | |
| Cylinder 4 ignition coil | |
| Cylinder 5 ignition coil | |
| Cylinder 6 ignition coil | |
| Cylinder 7 ignition coil | |
| Cylinder 8 ignition coil | |
| 59 | 15/20A Starter relay |
| 60 | 10A Oil cooler fan (E55 AMG, E63 AMG) |
| 61 | 40A Electric air pump |
| 62 | 30A ASG pump control relay (Sequentronic semi-automatic gearbox (ASG)) |
| 63 | 15A Semi-automatic gearbox control unit (Sequentronic semi-automatic gearbox (ASG)) |
| Terminal 87 relay, motor (motors 112, 113) | |
| ME control unit (engines 112, 113) | |
| 64 | 7.5A Exterior lighting rotary switch |
| instrument cluster | |
| Steering column electronic module (until 2007) | |
| Control panel KLA | |
| 65 | 20A EZS control unit |
| Electric steering lock control unit | |
| 66 | 7.5A Front right headlight |
| Front left headlight | |
| LWR dial (since 2007) | |
| Headlight range adjustment module (Bi-Xenon headlights) | |
| 67 | 5/10A Stop lamp switch |
| Relay | |
| I | Terminal 87 relay, motor |
| K | Relay, electr. circuit terminal 87 undercarriage |
| L | Starter relay |
| Π | ASG pump control relay (until 2007) |
| N | Relay terminal 15 |
| O | Horn relay |
| P | Relay terminal 15R |
| R | Air pump relay (except engine 113.990 (E55 AMG), 156.983 (E63 AMG)) |
| Oil cooler fan relay (engine 113.990 (E55 AMG), 156.983 (E63 AMG)) | |
| S | AIRMATIC relay (semi-active air suspension) |
| T | Isolating relay for disconnected consumers (until 2007) |
Fuse number 54 is responsible for the front cigarette lighter, for the rest of the fuses located in the boxes in the luggage compartment.
Passenger compartment
Fuse box in the dashboard
On the left side of the dashboard, behind a protective cover, there is a fuse box.
Photo – example
Diagram
Allocation
| 150A Power supply: Rear power fuse box | |
| 21 | 25/30A Rear right door control unit |
| 22 | Front right door control unit |
| 23 | 30A Seat adjustment control unit with memory function, front passenger |
| 24 | 25A Terminal 30 cable lug, Keyless-Go |
| 25 | 25A Auxiliary heater protected via cable termination:( STH heater) |
| 5A Additional protection via auxiliary heater switch fuse: | |
| Receiving unit for radio remote control of the auxiliary heater STH | |
| 26 | 7.5A CD changer |
| 27 | 5A Terminal 15 relay (since 2007) |
| 28 | 5A Audio system |
| Control panel with COMAND system display (Japan) | |
| 15A Audio module and navigation box control panel (Audio 50 APS) | |
| 15A Control panel with COMAND system display | |
| 29 | 15A Cable lug electr. terminal 30 circuits |
| 15A DC/DC converter control unit (before 2003) | |
| El7.5 Electronic steering column module | |
| 7.5A EZS control unit | |
| 30 | 7.5A Diagnostic connector |
| 31 | 5A Upper control box |
| 5A Isolating relay for disconnected consumers (2006) | |
| 7.5A SAM control unit with relay and fuse module on the driver’s side (until 2006) | |
| 32 | 25/30A Rear control unit a lion. doors |
| 33 | 25/30A Front left door control unit |
| 34 | 30A Driver’s seat adjustment control unit with memory function |
| 35 | 5A Passenger weight system (WSS) control unit (since 2007; USA) |
| 36 | 25A Seat heating and ventilation control unit |
| 37 | 7,5/15A AIRmatic control unit with ADS system |
| 38 | 7,5A Headrest relay NECK-PRO |
| 39 | 5A Control box lower control box |
| 40 | 5A Upper control box (before 2006) |
| 10A Seat heating and ventilation control unit | |
| 41 | 5A Central interface control unit |
| 42 | 7.5A Isolating relay for disconnected consumers (until 2006) |
| ME control unit (engines 112, 113) | |
| Terminal 87 relay, motor (motors: 629, 642, 646 EVO) | |
| SAM control unit with relay and fuse module on the driver’s side (engines 271, 272, 628, 629, 642, 646, 647, 648) | |
| CNG control unit (engine 271) | |
Fuse box under the dashboard
This fuse box is located in the front passenger footwell. To access it is necessary to remove the casing and the protective cover.
Diagram
Appointment
| 68 | 200A Auxiliary heater (engines 629, 642, 646, 647, 648) |
| 69 | 150A Glow output stage (646, 647, 648 engines) |
| 150A End of glow plug time (engines 629, 642, 646) | |
| 70 | 150A Secondary Battery Relay |
| Engine starting point from an external energy source (since 2007; type 211.2) | |
| 71 | 100A Engine and A/C suction fan with integrated regulator (engines 112, 113, 156, 271, 272, 273, 629, 642, 646, 647, 648) |
| 72 | 50A Hydraulic block SBC |
| 73 | 40A Hydraulic block SBC |
| 40A ESP control unit (since 2007) | |
| 74 | 40A Relay AIRMATIC |
| 75 | 40A SAM control unit, passenger side |
| 76 | 40A Catalyst purge relay (2003; engines 113.990 (E55 AMG)) |
| 40A Front right reversible seat belt pretensioner (PRE-SAFE) | |
| 77 | 40A Heating air recirculation unit |
| Solar generator control unit | |
| Fan electric motor (since 2007) |
Luggage compartment
Fuse box behind the trim panel
On the left side in the luggage compartment, behind the trim, there is a box with fuses and relays.
Diagram
Decoding
| 1 | 30A Switch for partially electric seat adjustment, passenger side |
| Driver’s seat adjustment control unit with memory function | |
| 2 | 30A Switch for partially electric seat adjustment, driver’s side |
| Seat adjustment control unit with memory function, front passenger | |
| 3 | 7.5A RDK control unit (tire pressure monitoring system) |
| PTS control unit (parktronic) | |
| TV tuner (analogue / digital) | |
| Navigation processor | |
| 4 | 15/20A Fuel pump (except 113.990 (E55 AMG), 156.983 (E63 AMG)) |
| 7.5/15A Charge air cooler circulation pump (113.990 (E55 AMG)) | |
| 5 | Not used |
| 6 | 40A Audio interface control unit |
| Antenna amplifier module, left | |
| Audio system | |
| 7 | 15A Tailgate control unit |
| 8 | 7.5A Antenna amplifier module left |
| Tilt sensor EDW | |
| Audible alarm | |
| 9 | 25A Ceiling Control Panel |
| 10 | 40A Heated rear window |
| 11 | 20A Tailgate control unit |
| 12 | 15A Socket in luggage compartment |
| 13 | 15A Socket in saloon |
| 14 | Not used |
| 15 | 10A El. central locking drive fuel tank cap |
| 16 | 20A Seat heating and ventilation control unit |
| 17 | 20A AAG control unit (drawbar) |
| 18 | 20A AAG control unit (drawbar) |
| 19 | 20A Air pump for multi-contour seat |
| 20 | 7.5A Rear window blind relay |
| Relay | |
| A | Fuel pump relay (except engine 113.990 (E55 AMG), 156.983 (E63 AMG)) |
| Charge air cooler circulation pump relay (only for engine 113.990 (E55 AMG)) | |
| B | Relay 2, terminal 15R |
| C | Backup relay 2 |
| D | Rear Wiper Relay |
| E | Heated rear window relay |
| F | Relay 1, terminal 15R |
| G | Gas Cap Relay, Polarity Reversal 1 |
| H | Gas cap relay, polarity switch 2 |
Fuse box next to the battery
Another high power fuse box is installed next to the battery.
Diagram
Assignment
| 78 | 200A SAM control unit with driver side fuse relay module |
| 79 | 200A SAM control unit with rear relay and fuse box |
| 80 | 150A SAM control unit with driver side fuse relay module |
| 81 | 150A Interior fuse box |
| 82 | 150A Fuse box II, wheel arch rear right (service vehicles) |
| 150A Fuse 82A and 82B (engines 113.990 (E55 AMG), 156.983 (E63 AMG)) | |
| 82A | 30A Fuel pump relay (engine 113.990 (E55 AMG)) |
| 40A Fuse for the left fuel pump control unit (engine 156.983 (E63 AMG)) | |
| 40A Fuse for the right fuel pump control unit (engine 156.983 (E63 AMG)) | |
| 82B | 40A Catalyst Purge Relay |
| 83 | 30A Multifunctional control unit spec. cars (MSS) (taxi) |
| 84 | 5A Battery control unit |
| battery sensor | |
| 85 | 5A Phone interface |
| Hands-free telephone system control unit | |
| Voice control control unit | |
| UHI control unit (universal mobile phone interface) | |
| 86 | Interior socket (5A until 2003, 30A from 2004-2007, 5A from 2007) |
| 5A SDAR control unit (since 2007; USA) | |
| 30A Multifunctional control unit spec. Vehicles (MSS) (service vehicles, taxis) | |
| 30A GAS control unit (service vehicles) | |
| 30A Wire connector, terminal 30/interior (company vehicles) | |
| 87 | 40A Air pump for dynamic seat adjustment |
| 88 | 30A HDS control unit (type 211.0) |
| Tailgate closing control unit (type 211.2) | |
| 89 | 40A Luggage compartment floor control unit (type 211.2) |
| 90 | 40A Front left reversible seat belt pretensioner (PRE-SAFE) |
| Multifunctional control unit spec. cars (MSS) (taxi) | |
| 30A Fuel pump relay (up to 2004; engine 113.990 (E55 AMG)) | |
| 91 | 40A Multifunctional control unit spec. cars (MSS) (taxi) |
That’s all. And if you have something to add – write in the comments.
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Missing – where is fuse 3-rd stop light?!