The Mercedes-Benz 210 represents the second generation of E-class passenger cars that were produced in 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 and 2003 with the W210 sedan and S210 station wagon. During this time, the model has been restyled. In this material you will find information about the location of all electronic control units, a detailed description of the fuses and relays of the Mercedes 210 with box diagrams, photo examples of performance and their locations. Select the cigarette lighter fuse.
The location of the blocks and elements in them may differ from the one shown and depends on the year of manufacture and the level of electrical equipment of your car. Check the information with your diagrams on the box cover.
Contents
Location
General layout of electronic control units
Assignment
| 1 | Air conditioning control unit – in the heater control panel |
| 2 | Antenna signal booster – under the rear shelf |
| 3 | Anti-theft control unit (combined with a vacuum pump) – under the rear seat |
| 4 | Vehicle Tilt Sensor (Anti-Theft System) – Under Rear Seat |
| 5 | Anti-theft horn (1997) |
| 6 | Anti-theft horn (1998) – Behind wheel arch |
| 7 | Volume change sensor (anti-theft system), left (some models) – B-pillar |
| 8 | Volume change sensor (anti-theft system), right (some models) – B-pillar |
| 9 | Volume change sensors (anti-theft system) (some models) |
| 10 | Audio output amplifier |
| 11 | Additional heater control unit |
| 12 | Battery – under rear seat |
| 13 | Central locking control unit (infrared) |
| 14 | Central locking signal sensor (infrared) – in the interior rear-view mirror |
| 15 | Control unit (in case of accident) (with TELE AlD) – left side of the luggage compartment |
| 16 | Diagnostic connector (DLC) 1 |
| 17 | Diagnostic Connector (DLC) 2(2001) |
| 18 | Door electrical control unit, driver’s side (03/97^) |
| 19 | Door Electrical Control Module, Driver Side (Rear) (03/97^) |
| 20 | Door electrical control unit, passenger side (03/97) |
| 21 | Door Electrical Control Module, Passenger Side (Rear) (03/97) |
| 22 | Power window control unit – in the center console switch box |
| 23 | Fuse/Relay Box, Instrument Panel |
| 24 | Fuse/Relay Box, Engine Compartment 1 |
| 25 | Fuse/Relay Box, Engine Compartment 2 |
| 26 | Fuse/Relay Box, Under Rear Seat |
| 27 | Headlight control unit, left (models with xenon headlights) |
| 28 | Headlight control unit, right (models with xenon headlights) |
| 29 | Headlight range control unit (models with xenon headlights) |
| 30 | Horns – behind the front bumper |
| 31 | Ignition lock control unit |
| 32 | Electronic immobilizer control unit – combined with an ignition switch control unit |
| 34 | Lighting control unit – in the headlight switch |
| 35 | Multifunctional control unit 1 (02/97) – functions: Central locking, power windows, sunroof (central locking system) – (03/97), alarm, rear window defroster, direction indicators, steering column adjustment mechanism, windshield wipers |
| 36 | Multifunction control unit 2 (03/97) – functions: Interior lamps, sunroof, vanity mirror lamps |
| 37 | Navigation system control unit – in the audio unit |
| 38 | Ambient temperature sensor |
| 39 | Parking system control unit (06/99) |
| 40 | Parking system control unit (07/99) |
| 41 | Rain sensor – in the interior rear view mirror |
| 42 | Relay Bank 1 – Includes: ABS Relay, Engine Management System Relay, Cooling Fan Motor Relay, Fuel Pump Relay, Exhaust Air Pump Relay, Throttle Control Relay (^02/97) |
| 43 | Relay Bank 2 – Includes: Exhaust Air Pump Relay, Starter Relay, Overload/Surge Protective Relay (ABS)(03/97) |
| 44 | Left front seat power control unit |
| 45 | Right front seat power control unit |
| 46 | Seat heating control unit, front – in the switch block |
| 47 | Seat heating control unit, rear – under the rear seat |
| 48 | Side impact sensor, left – some models, under the front seat |
| 49 | Side impact sensor, left – some models, under the rear seat |
| 50 | Side impact sensor, right – some models, under the front seat |
| 51 | Side impact sensor, right – some models, under the rear seat |
| 52 | SRS electronic control unit |
| 53 | Steering column lock control unit |
| 54 | Body height sensor, front (models with xenon headlights) |
| 55 | Body height sensor, rear (models with xenon headlights) |
| 56 | Telephone network connection module (06/98) – left side of the luggage compartment |
| 57 | Telephone interface control unit (06/98) – left side of the luggage compartment |
| 59 | Electronic gearbox control unit |
| 60 | Shift control unit – automatic transmission selector |
| 61 | Voice Activation Unit – LH Trunk |
Engine compartment
Main fuse and relay box
The main fuse and relay box is located under the hood on the left side behind the protective cover. Consists of two departments (fuses and relays).
Photo – diagram
Designation of fuses
| F1 | (15A) Cigarette lighter (via ignition switch), ashtray light – 05/99 |
| F2 | (15A) Cigarette lighter (via ignition switch), ashtray light – 06/99 |
| F3 | (15A) Combination switch (low beam, high beam, windshield wiper/washer, rear window washer), glove box lamp |
| F4 | (10A) Air conditioning/heating system, clock, headlights on warning buzzer, steering wheel position sensor (06/99) |
| F5 | (15A) Alarm (with trailer) – 02/970 |
| F6 | (15A) Cigarette lighter (from battery) – 05/99 |
| F7 | (15A/20A) Instrument cluster, air conditioning/heating system, relay box (engine compartment) |
| F8 | (7.5A) Air conditioning / heater control unit – 02/97 |
| F9 | (15A) Steering lock – 03/97 |
| F10 | (7.5A) Rear window cleaner / washer – 02/97 |
| F11 | (15A) Audio/Navigation System, Rear Room Lamp, Power Seat (03/97), Accessory Power Connector (Luggage Compartment) – Estate |
| F12 | (10A) Rear window wiper (some models), seat heaters, seat belt drive (comfort), sunblind |
| F13 | (10A) Audio / navigation system, SRS system, control unit (in case of accident) |
| F14 | (7.5A) Infrared central locking receiver, multifunctional control unit, parking system – ^02/97 |
| F15 | (15A) Automatic transmission control system, variable valve timing actuator (s) (engine 111), diagnostic connector, fuel vapor recovery system (gasoline), glow plug control unit, headlight range control – 02/97 |
| F16 | (15A) Power door mirrors, interior rear view mirror, windshield washer jet heaters – 02/97 |
| F17 | (10A) Infrared receiver. Central locking, steering wheel position sensor -^02/97 |
| F18 | (20A) Door Function Control Module, Driver’s Side (Rear) (Power Window, Position Lamp/Door Light) – 03/97—> |
| F19 | (10A/15A) Cruise control, ignition coils, oil cooler – some models |
| F20 | (30A/50A) Cooling fan motor – some models |
| F22 | (30A) Multifunction control box – some models |
| F23 | (7.5A) Rain sensor, telephone |
| F24 | — |
| F25 | (20A) Additional heater |
| F26 | — |
The fuses numbered 1 or 2 are responsible for the operation of the cigarette lighter.
Relay department diagram
Allocation
| 1 | ABS pump motor relay |
| 2 | Windshield wiper motor relay 1 |
| 3 | Oil cooler fan motor relay |
| 4 | Headlight washer pump relay |
| 5 | Windshield wiper motor relay 2 |
| 6 | Windshield washer pump relay |
| 7 | Horn relay |
| F39 | (30A) Engine oil cooler fan motor |
| F40 | (10A) Sound signals |
| F41 | (15A) Multifunction control box |
| F42 | (7.5A) Heater and windshield washer nozzles |
| F43 | (7.5/10A) Windshield washers |
| F44 | (40A) Windshield wiper |
| F45 | (30A) Headlight washers |
Additional fuse and relay box
It is located on the right side, next to the electronic transmission control unit.
This may include: Exhaust Air Pump Relay, Starter Relay, Overload/ Surge Protective Relay (ABS) and some fuses.
Passenger compartment
Fuse box in the instrument panel
This fuse box is installed at the end of the dashboard behind a protective cover.
Diagram
Appointment
LHD
- Not used
- 15A Stoplight switch / Cruise control
- 7.5A Right high beam, Headlight high beam indicator
- 15A Reversing lamps, Direction indicators, Rear wiper control (T210), Dimming rearview mirror, Parking assistance
- 7.5A Left high beam
- 15A Right dipped beam
- 7.5A Parking lights on the right side
- 15A Left dipped beam
- 15A Front fog lights
- 7.5A Parking lights on the left side
- 7.5A License plate light, Instrument panel light, Warning lamps, Headlight range control
- 7.5A Rear fog lamp
RHD
- 15A Front fog lights
- 7.5A Rear fog lamp
- 7.5A Parking lights on the right side
- 7.5A Parking lights on the left side
- 7.5A Left high beam
- 7.5A License plate light, Instrument panel light, Warning lamps, Headlight range control
- 7.5A Right high beam, Headlight high beam indicator
- 15A Left dipped beam
- 15A Stoplight switch / Cruise control
- 15A Right dipped beam
- Not used
- 15A Reversing lamps, Direction indicators, Rear wiper control (T210), Dimming rearview mirror, Parking assistance
Fuse box under rear seat
There is another fuse and relay box under the rear passenger seat.
Diagram
Decoding
| 1 | 30A до 28.2.97: |
| Multifunctional control box: | |
| Left rear power window | |
| Right rear power window | |
| 20A from 1.3.97: Right front door control unit | |
| 2 | 30A until 28.2.97: |
| Multifunctional control box: | |
| Front left power window | |
| Front right power window | |
| 20A from 1.3.97: Right rear door control unit | |
| 3 | 15A until 28.2.97: |
| trunk lighting | |
| Combined control unit | |
| front cover | |
| rear cover | |
| Lamps in the doors | |
| Ventilation front left seat | |
| Ventilation front right seat | |
| Taxi: | |
| Interior lighting | |
| 7.5A since 1.3.97: | |
| Bottom control panel | |
| rear cover | |
| trunk lighting | |
| Taxi: | |
| Interior lighting | |
| 4 | 25A until 28.2.97: |
| Luke | |
| sunroof switch | |
| 25A from 1.3.97: Overhead control panel control unit | |
| 5 | 25A Pneumatic system |
| Horn of the anti-theft system | |
| Radio | |
| Radio and navigation system control panel | |
| Navigation processor | |
| CD player with changer (in trunk) | |
| Receiver and amplifier (in the trunk) | |
| Display and function control unit COMAND (from 1.6.99) | |
| Rear window aerial amplifier module (as of 1.6.99) | |
| 6 | 20A until 28.2.97: |
| Wagon: Tailgate closing system | |
| 25A from 1.3.97: | |
| Engines 111, 112, 113: Fuel pump | |
| 7 | 30A until 28.2.97: |
| Power mirrors | |
| Steering column adjustment drive | |
| 20A from 1.3.97: | |
| Wagon: Tailgate closing system | |
| 8 | 25A Power seat control unit, left (with memory) |
| 25A Partially electric driver’s seat adjustment (as of 1.6.99) | |
| 9 | 25A Power seat control unit, left (with memory) |
| 25A Adjusting the partially electric passenger seat (from 1.6.99) | |
| 10 | 10A Refrigerator |
| Interior monitoring (in the presence of an alarm) (until 28.2.97): | |
| Motion Sensor | |
| Signaling (ATA) (until 2/28/97): | |
| ATA Tilt Sensor | |
| Information systems, (Japan; from 1.3.97 to 31.5.99): | |
| CD player with changer (in trunk) | |
| Antenna amplifier | |
| TV tuner | |
| Navigation processor | |
| Relay 15 terminals | |
| Display and function control unit COMAND (from 1.6.99): | |
| TV tuner | |
| 11 | 7.5A from 1.3.97 to 31.5.99: |
| Signaling (ATA): | |
| Alarm horn with optional battery | |
| Tilt sensor (US) | |
| ADS or ESP, engine 112, 113 and 606: | |
| Steering wheel position sensor | |
| Interior monitoring (if there is an alarm): | |
| tilt sensor | |
| Motion Sensor | |
| from 1.6.99: | |
| USA: | |
| Emergency unlocking of the boot lid (from 1.6.00) | |
| Electronic Stability Program (ESP): | |
| Steering wheel position sensor | |
| Interior monitoring (if there is an alarm): | |
| Motion Sensor | |
| tilt sensor | |
| 12 | 25A Trailer connector |
| 13 | 25A Power seat control unit, right (with memory) |
| 14 | 25A Power seat control unit, right (with memory) |
| 15 | 7.5A Taxi (until 2/28/97): |
| Taxi sign illumination | |
| Taxi sign light switch | |
| Dynamic navigation system (from 1.3.97 to 31.5.98): | |
| Phone | |
| TELE AID control unit (since 1.3.97) | |
| Emergency call control unit (since 1.3.97) | |
| CTEL transmitter / receiver (up to 31.5.98) | |
| Voice control control unit (as of 1.6.98) | |
| D2B interface (until 31.5.00) | |
| Tire pressure monitoring control unit (as of 1.3.97) | |
| 16 | 25A Audio amplifier |
| 17 | 25A until 28.2.97: |
| Rear seat heating | |
| 20A from 1.3.97: | |
| Rear seat heating | |
| 18 | 20A Heated front seats |
| 19 | 40A Pneumatic system |
| Rear window heating | |
| central locking | |
| Signaling | |
| Volume sensor and towing sensor | |
| 20 | 40A from 1.3.97: |
| official cars | |
| Taxi: | |
| Additional fuse box |
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That’s all. If you know how to make the material better – write in the comments.
thank you for this guide to fuses and relays so helpful.
But what are the fuses in the Additional fuse and relay box as I have a 2000 w210 e200k right hand drive and have blown a fuse in this K40 relay box which caused starting problems and esp and abs codes once 3rd fuse replaced all ok except now no air conditioning.
Any help please
Regards
John
Hi its Hennie my E240 stand for a 1and a half year i recently start it a few times and the last 2 times it start intermitendly somethimes it start immediatly somethimes longer. Can it be the starter relay or can i spray electrical cleaner i living at the coast and think its part of it .Nothing can just break down while standing .Maybe you can advise where to check Its a E240 1999 model W210 Rh drive as i live in South Africa.Regards
How do you check if the fuses are out of order?
Hi it’s Eddie from zambia I just recently bought a w210 RHD, which had a lost key. tried to get another key reprogrammed but still can’t start. pleas help. what should I do?