The Mercedes-Benz 211 body represents 3 generations of E-class cars, which were produced in 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 with both gasoline and diesel engines (E200, E220, E230, E240, E270, E280, E300, E320, E350, E400, E420, E500, E55 & E63 AMG) and with the bodies of the sedan w211 and the station wagon S211. During this time, the model has undergone restyling. 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 block diagrams and photo examples of their execution. We will highlight the fuse responsible for the cigarette lighter.
The location of the blocks and the purpose of the elements in them may differ from the one presented and depends on the year of manufacture and the level of electrical equipment of your car.
Arrangement Mercedes-Benz w211
| № | Description |
|---|---|
| 1 | ABS electronic control unit -> 31/05/06 |
| 2 | Electronic control unit ABS – 01/06/06^ |
| 3 | Antenna signal amplifier – audio system/navigation system |
| 4 | Antenna signal amplifier 1 (TV tuner) – rear window |
| 5 | Amplifier 2 antenna signals (TV tuner) – left rear pillar (sedan) – left rear door pillar (wagon) |
| 6 | Amplifier 3 antenna signal (TV tuner) – right rear pillar (sedan) – right rear door pillar (wagon) |
| 7 | Impact sensor, left – behind the headlight |
| 8 | Impact sensor, right – behind the headlight |
| 9 | Side impact sensor assembly, left – center pillar |
| 10 | Side impact sensor assembly, right – center pillar |
| 11 | Anti-theft system control unit – left side of luggage compartment (combined with multi-function control unit 2) |
| 12 | Anti-theft alarm sound – behind the wheel arch trim |
| 13 | Sunlight sensor – upper center of windshield |
| 14 | Additional battery -> 31/05/06, if available |
| 15 | Additional battery -> 31/05/06, if available |
| 16 | Auxiliary heater control unit |
| 17 | Auxiliary heater remote control receiver – right side of luggage compartment |
| 18 | Battery – under the luggage compartment floor |
| 19 | Battery control unit – luggage compartment, under the 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 block, engine compartment |
| 31 | Fuse/relay block dashboard |
| 32 | Fuse/relay block, footwell |
| 33 | Fuse/relay block, luggage compartment |
| 34 | Fuse box/relay spare wheel niche |
| 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 mat (models with xenon headlights) |
| 38 | Sound signal 1 – behind the radiator grille |
| 39 | Horn 2 – behind the front bumper |
| 40 | Ignition lock control unit |
| 41 | Electronic Immobilizer Control Unit (combined with the 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 (wagon) – for hollow luggage compartments |
| 45 | Multifunction Control Unit 1 – attached to the fuse/relay box in the engine compartment – functions: Air conditioning pressure control, brake fluid level, coolant level, front lighting, headlight washers, horn, interior lighting, outside temperature, windshield wipers |
| 46 | Multifunctional Control Unit 2-connected to fuse/relay block, luggage compartment-functions: Anti-theft system, opening rear doors/trunk lid, central locking, fuel level, fuel pump, hazard warning light, rear window heater, turn signals, rear lighting |
| 47 | Multifunctional Control Unit 3 – in the multifunction switch control unit (ceiling console) – functions: Volume change sensors (anti-theft system), sunlight sensor, interior lighting lamps, rain sensor |
| 48 | Multifunctional Control Unit 4-in the multifunction switch control unit (dashboard)-functions: Air conditioning control unit, central locking, alarm, rear window wiper |
| 49 | Multifunctional Control Unit 5-in multifunction switch control unit (center console)-functions: Auxiliary heater switch, parking system, active suspension system, tailgate/trunk lid actuator switch |
| 50 | Multifunction Control Unit 6 – footwell, under the mat – functions: Coolant pump motor, fog lights, seat heaters, reversing lights, gear selector |
| 51 | Multifunction Control Unit 7 – in the rear interior lighting lamp (with transparent roof) – functions: Interior lighting lamps |
| 52 | Navigation system control unit |
| 53 | Ambient temperature sensor |
| 54 | Parking system control unit – left side of luggage compartment |
| 55 | Rain sensor – upper center of windshield |
| 56 | Electric seat control unit, front left – under the seat |
| 57 | Electric seat control unit, front right – under the seat |
| 58 | Headrest drive relay (01/06/05^) |
| 59 | Solar battery control unit – by device combination |
| 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 steering column electrical control unit |
| 63 | Steering wheel heating control unit – near the instrument cluster (^05/05) |
| 64 | Electric sunroof control unit – in the multifunction switch control unit (ceiling console) |
| 65 | SRS Electronic Control Unit |
| 66 | Active suspension control unit – footwell, under the mat |
| 67 | Rear door opening/closing drive control unit – left part of the luggage compartment |
| 68 | Telephone antenna |
| 69 | Telephone interface control unit – under the panel, in the rear of the luggage compartment |
| 70 | Trailer electrical equipment control unit – left part of the luggage compartment |
| 71 | Electronic gearbox control unit (sequential manual transmission) – footwell, under the mat |
| 72 | Electronic Transmission Control Unit – footwell, under the mat |
| 73 | Tire pressure monitoring system control unit – left side of luggage compartment |
| 74 | Voice activation system unit – under the panel, in the rear of the luggage compartment |
| 75 | Lateral displacement sensor |
Block under the hood Mercedes-Benz w211
Under the hood, the base block with fuses and relays is located on the left side, next to the rack and is covered by a protective cover.
| № | A | Marking |
|---|---|---|
| 43 | 15A | ME control unit (engines 112, 113, 156, 271, 272, 273) CDI control unit (engines 628, 629, 642, 646, 647, 648) SAM control unit with rear relay and fuse block (engines 629, 642, 646, 647, 648) SAM control unit with driver’s side relay and fuse module (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 level control unit Electronic selector lever module control unit (5-speed automatic transmission (NAG)) Selector lever position sensor (Sequentronic semi-automatic transmission (ASG)) |
| 46 | 7.5A | EGS system control unit (5-speed automatic transmission (NAG)) Semi-automatic transmission control unit (Sequentronic (ASG)) VGS electrical control module (7-speed automatic transmission) |
| 47 | 5A | ESP, PML and BAS control unit |
| 48 | 7.5A | Passive safety system control unit Front left reversible seat belt tensioner (from 2007) Front right reversible reversible seat belt tensioner (from 2007) |
| 49 | 7.5A | Passive safety system control unit Passenger/child seat detection sensor on the front passenger seat NECK-PRO head restraint relay |
| 50 | 5A | Mobile phone power circuit connector Power circuit disconnection point VICS (Japan) Emergency call system control unit (since 2007; USA) |
| 51 | 5A | Not used |
| 52 | 7.5A | Outdoor lighting rotary switch |
| Instrument combination | ||
| Glove box lighting with microswitch | ||
| Headlight range adjustment control unit (bi-xenon headlights) | ||
| Electric suction fan for engine and air conditioning with integrated regulator (since 2007) | ||
| 53a | Not used | |
| 53b | 15A | Audible signal relay |
| 54a | 15A | Cigarette lighter with light |
| 54b | 15A | Cigarette lighter with light |
| 55 | 7.5A | Telephone (standard “MB” telephone) |
| Plug connection of the Bluetooth module (standard phone “MB”) | ||
| Mobile phone circuit connector | ||
| Emergency call system control unit (since 2007; USA) | ||
| 56 | 40A | Slag cleaner motor (M6/1) |
| 57 | 25A | CDI system control unit (engines 628, 646, 647, 648) |
| Electric suction fan for engine and air conditioner with integrated regulator (engines 271, 272, 273) | ||
| Me control unit (engines 271, 272, 273) | ||
| Regeneration switching valve (engines 271, 272, 273) | ||
| PremAir system sensor (engines 271, 272, 273) | ||
| Coal adsorber shut-off 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 transmission (ASG)) |
| 63 | 15A | Semi-automatic gearbox control unit (Sequentronic semi-automatic gearbox (ASG)) |
| Relay terminal 87, engine (engines 112, 113) | ||
| ME control unit (engines 112, 113) | ||
| 64 | 7.5A | Outdoor lighting rotary switch |
| Instrument combination | ||
| Electronic steering column module (up to 2007) | ||
| KLA control panel | ||
| 65 | 20A | EZS control unit |
| Electric steering lock control unit | ||
| 66 | 7.5A | Front right headlight |
| Front left headlight | ||
| LWR disc regulator (since 2007) | ||
| Headlight range adjustment module (bi-xenon headlights) | ||
| 67 | 5/10A | Brake light switch |
| Relay | ||
| I | Relay terminal 87, engine | |
| K | Relay for the electrical circuit of the chassis terminal 87 | |
| L | Starter relay | |
| M | ASG pump control relay (until 2007) | |
| N | Relay terminals 15 | |
| O | Audible signal relay | |
| P | Relay terminals 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 | Separate relay for consumers that are switched off (until 2007) | |
Fuse number 54 is responsible for the front cigarette lighter, the remaining fuses are located in blocks in the luggage compartment.
Blocks in the cabin Mercedes-Benz w211
Unit in the instrument panel
On the left side of the dashboard, behind a protective cover, there is a fuse box.
| № | A | Appointment |
|---|---|---|
| 150A Power Supply: Rear Power Fuse Block | ||
| 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 electrical circuit cable lug, Keyless-Go |
| 25 | 25A | The stand-alone heater is protected via a cable end sleeve: (STH heater) |
| 5A | Additional protection via the fuse of the auxiliary heater switch: | |
| Receiver unit for remote radio control of the STH autonomous heater | ||
| 26 | 7.5A | CD changer |
| 27 | 5A | Relay terminal 15 (since 2007) |
| 28 | 5A | Audio system |
| Control panel with COMAND system display (Japan) | ||
| 15A | Audio module and navigation unit control panel (Audio 50 APS) | |
| 15A | Control panel with COMAND display | |
| 29 | 15A | Cable lug electrical circuit terminal 30 |
| 15A | DC-DC converter control unit (up to 2003) | |
| 7.5A | Electronic steering column module | |
| 7.5A | EZS control unit | |
| 30 | 7.5A | Diagnostic connector |
| 31 | 5A | Upper control panel |
| 5A | Separate relay for consumers that are disconnected (2006) | |
| 7.5A | SAM control unit with relay and fuse module on the driver’s side (up to 2006) | |
| 32 | 25/30A | Rear left door control unit |
| 33 | 25/30A | Front left door control unit |
| 34 | 30A | Driver’s seat adjustment control unit with memory function |
| 35 | 5A | Weight Sensing 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 | NECK-PRO headrest relay |
| 39 | 5A | Control unit of the lower control panel |
| 40 | 5A | Upper control panel (until 2006) |
| 10A | Seat heating and ventilation control unit | |
| 41 | 5A | Central interface control unit |
| 42 | 7.5A | Separate relay for consumers to be switched off (up to 2006) ME control unit (engines 112, 113) Terminal 87 relay, engine (engines: 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) |
Unit under the dashboard Mercedes-Benz w211
This fuse box is located in the front passenger footwell. To access it, you must remove the trim and protective cover.
| № | A | Description |
|---|---|---|
| 68 | 200A | Additional heater (engines 629, 642, 646, 647, 648) |
| 69 | 150A | Preheating output stage (engines 646, 647, 648) |
| 150A | End of spark plug ignition timing (engines 629, 642, 646) | |
| 70 | 150A | Auxiliary battery relay Engine start point from an external energy source (since 2007; type 211.2) |
| 71 | 100A | Electric suction fan for engine and air conditioner with integrated regulator (engines 112, 113, 156, 271, 272, 273, 629, 642, 646, 647, 648) |
| 72 | 50A | SBC hydraulic block |
| 73 | 40A | SBC hydraulic unit ESP control unit (since 2007) |
| 74 | 40A | AIRMATIC relay |
| 75 | 40A | SAM control unit, passenger side |
| 76 | 40A | Catalytic converter purge relay (2003; 113.990 (E55 AMG) engines) Front right reversible seat belt tensioner (PRE-SAFE) |
| 77 | 40A | Heating system air recirculation unit Solar generator control unit Fan electric motor (since 2007) |
Blocks in the trunk Mercedes-Benz w211
Block behind the interior trim
On the left side in the luggage compartment behind the trim, a block with fuses and relays is installed.
| № | A | Description |
|---|---|---|
| 1 | 30A | Switch for partially electric seat adjustment, front passenger side Driver’s seat adjustment control unit with memory function |
| 2 | 30A | Switch for partially electric seat adjustment, driver’s side Control unit for seat adjustment with memory function, front passenger |
| 3 | 7.5A | RDK control unit (tire pressure monitoring system) PTS control unit (parking system) TV tuner (analog / 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 on the left Audio system |
| 7 | 15A | Tailgate control unit |
| 8 | 7.5A | Antenna amplifier module on the left EDW tilt sensor Audible alarm |
| 9 | 25A | Ceiling control panel |
| 10 | 40A | Heated rear window |
| 11 | 20A | Tailgate control unit |
| 12 | 15A | Socket in the luggage compartment |
| 13 | 15A | Socket in the cabin |
| 14 | Not used | |
| 15 | 10A | Electric central locking drive fuel tank cap |
| 16 | 20A | Seat heating and ventilation control unit |
| 17 | 20A | AAG control unit (traction coupling device) |
| 18 | 20A | AAG control unit (traction coupling device) |
| 19 | 20A | Multi-circuit seat air pump |
| 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 | Rear window heating relay | |
| F | Relay 1, terminal 15R | |
| G | Fuel cap relay, polarity switching 1 | |
| H | Fuel cap relay, polarity switching 2 | |
Block near the battery Mercedes-Benz w211
Another high-power fuse block is installed next to the battery.
| 78 | 200A | SAM control unit with fuse relay module on the driver’s side |
| 79 | 200A | SAM control unit with rear relay and fuse block |
| 80 | 150A | SAM control unit with fuse relay module on the driver’s side |
| 81 | 150A | Interior fuse box |
| 82 | 150A | Fuse block II, rear right wheel arch (company vehicles) Fuse 82A and 82B (engines 113.990 (E55 AMG), 156.983 (E63 AMG)) |
| 82A | 30A | Fuel pump relay (engine 113.990 (E55 AMG)) |
| 40A | Left fuel pump control unit fuse (engine 156.983 (E63 AMG)) Right fuel pump control unit fuse (engine 156.983 (E63 AMG)) | |
| 82B | 40A | Catalyst cleaning relay |
| 83 | 30A | Multifunctional control unit for special vehicles (MSS) (taxi) |
| 84 | 5A | Battery control unit Battery sensor |
| 85 | 5A | Telephone interface Hands-free telephone control unit Voice control unit UHI control unit (Universal Mobile Phone Interface) |
| 86 | Internal socket (5A before 2003, 30A from 2004-2007, 5A from 2007) | |
| 5A | SDAR control unit (since 2007; USA) | |
| 30A | Multifunctional control unit for special vehicles (MSS) (company cars, taxis) GAS control unit (company cars) Wire connector, terminal 30/interior (company cars) | |
| 87 | 40A | Pneumatic 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 tensioner (PRE-SAFE) |
| Multifunctional control unit for special vehicles (MSS) (taxi) | ||
| 30A | Fuel pump relay (until 2004; engine 113.990 (E55 AMG)) | |
| 91 | 40A | Multifunctional control unit for special vehicles (MSS) (taxi) |
Mercedes-Benz w211 fuses and relays. Mercedes-Benz w211 fuse diagram.