2004–2012 Mercedes A-Class (W169) Fuse Box Diagram
Fuse box in the front-passenger footwell
The fuse box is located in the front-passenger footwell in front of the seat.
- Remove the footmats.
- Turn retaining screw (2) anti-clockwise using a coin for example.
- Raise cover (1) and remove it.
- Remove the cover mat from the battery.
- Fuse allocation chart
- Fuse box
| No. | A | Description |
|---|---|---|
| 1 | 10 | Stop light switch |
| 5
|
with Light and vision package: Stop light switch | |
| 2 | 25 | Heated rear window |
| 3 | 7.5 | Instrument cluster
EIS [EZS] control unit |
| 4 | 15 | EIS [EZS] control unit
Electric steering lock control unit |
| 5 | 7.5 | HEAT control and operating unit
or Automatic air conditioning [KLA] control and operating unit or Comfort automatic air conditioning [KLA] control and operating unit |
| 6 | 15 | Left fanfare horn
Right fanfare horn |
| 7 | 25 | Fuel pump relay |
| 5
|
E-CELL: DC/DC converter control unit | |
| 8 | 25 | Overhead control panel control unit |
| 9 | 40 | ESP and BAS control unit |
| 10 | 40 | Blower regulator/interior wiring harness connector |
| 11 | 30
|
M266: Circuit 87 relay, engine |
| 40
|
OM640: Circuit 87 relay, engine | |
| 12 | 5 | Steering column module
Multifunction steering wheel |
| 13 | 25 | Left front door control unit |
| 14 | 25 | Right front door control unit |
| 15 | 25 | ESP and BAS control unit |
| 16 | 10 | Data link connector
PTS control unit |
| 17 | 5 | Rotary light switch |
| 18 | 7,5
|
Valid for transmission 711, 716:
Backup lamp switch |
| 7.5 | E-CELL:
A/C compressor control unit BKGN Energy monitoring control unit Vacuum pump 1 control unit Vacuum pump 2 control unit |
|
| 19 | 5 | Micromechanical turn rate sensor AY pickup |
| 20 | 7.5 | Restraint systems control unit |
| 21 | 30 | Starter relay |
| 22 | 7.5 | Instrument cluster |
| 23 | 7.5 | Washer nozzle heating |
| 20
|
OM640 (01.09.2008→): Fuel filter condensation sensor with heating element | |
| 24 | 7.5 | Electric power steering (ES) control unit |
| 25 | 7.5 | Stop light switch
ESp and BAS control unit |
| 26 | 7.5
|
Valid for transmission 722:
Electronic selector lever module control unit |
| 27 | 10
|
Valid for transmission 722:
CVT (continuously variable automatic transmission) control unit |
| 28 | 5 | Rotary light switch |
| 29 | 30 | SAM control unit |
| 30 | 25 | Circuit 87F relay |
| 31 | 5 | Central gateway control unit (vehicles up to 30.11.05)
Rotary light switch Automatic light switch daylight sensor Rain/light sensor |
| 32 | 7.5
|
M266: ME-SFI [ME] control unit |
| 7.5 | E-CELL: Energy monitoring control unit | |
| 33 | 15 | Radio
Radio and navigation unit COMAND operating, display and control unit (Japan) |
| 34 | 25 | Left rear door control unit |
| 35 | 25 | Right rear door control unit |
| 36 | 7.5 | Cell phone separation point
Trailer control unit |
| 10 | Trailer control unit
PTS control unit |
|
| 37 | 7.5 | Restraint systems control unit
Front passenger seat occupied recognition sensor Front passenger seat occupied and child seat recognition sensor |
| 38 | 25
|
Front cigar lighter with ashtray illumination |
| 39 | 25 | Wiper motor |
| 40 | 7.5 | Overhead control panel control unit |
| 25 | Roof motor | |
| 41 | 15 | Liftgate wiper motor |
| 42 | 7.5 | Glove compartment illumination with switch
Left and right vanity mirrors illumination Footwell illumination switch (driving school package) Pedal operation monitor switch (driving school package) VICS+ETC voltage supply separation point (Japan) |
| 43 | 15 | M266: Terminal 87M1 e connector sleeve |
| 7.5 | OM640: Terminal 87M1e connector sleeve | |
| 20 | E-CELL: Vacuum pump 1 control unit | |
| 44 | 15 | M266: Terminal 87M2e connector sleeve |
| 20 | OM640: Terminal 87M2e connector sleeve | |
| 45 | 25 | OM640: CDI control unit |
| 25 | E-CELL: Vacuum pump 2 control unit | |
| 46 | 7.5 | Telephone control unit, (Japan)
E-net compensator Universal Portable CTeL Interface (UPCI [UHI]) control unit |
| 25 | Bass module speaker (Japan) | |
| 40 | Amplifier for sound system | |
| 5
|
E-CELL: Charging control unit | |
| 47 | 7.5 | Telephone control unit (Japan)
Universal Portable CTEL Interface (UPCI [UHI]) control unit Cell phone separation point Voice control system (VCS [SBS]) control unit E-CELL: Charger 1 |
| 48 | 7.5 | ATA [EDW]/tow-away protection/interior protection control unit
Alarm signal horn with additional battery E-CELL: Charger 2 |
| 49 | 25 | Upper control panel control unit
Left front seat heated cushion Left front backrest heated cushion Right front seat cushion heater element Right front backrest seat cushion heater element |
| 50 | 7.5 | CD changer
Media interface control unit Digital TV tuner Digital Audio Broadcasting control unit VICS+ETC voltage supply separation point (Japan) |
| 30 | Government vehicles:
Roof light bar Circuit 30 connector sleeve |
|
| 51 | 10 | E-CELL:
Cooling fan Low temperature coolant pump |
| 52 | 5 | VICS+ETC voltage supply separation point (Japan) (vehicles up to 31.5.06)
E-CELL: Electric drive control unit |
| 7.5 | Spare (vehicles as of 1.6.06) | |
| 7.5 | Emergency call system control unit (USA) (vehicles up to 31.5.06) | |
| 53 | 30
|
Rear cigar lighter with ashtray illumination
Interior socket |
| 54 | 25 | Amplifier for sound system
Bass module speaker |
| 5
|
E-CELL: Electric drive control unit | |
| 55 | 7.5 | Left front lamp unit (Bi-xenon)
Right front lamp unit (Bi-xenon) |
| 10 | Left front lamp unit (Hi-xenon) | |
| 56 | 10 | Spare |
| 10 | Right front lamp unit (Hi-xenon) | |
| 57 | 15 | 01.06.2005→: Trailer hitch socket (13-pin) |
| 25 | →31.05.2005: Audio gateway control unit (Japan) | |
| 7.5 | SDAR control unit
Emergency call system control unit (USA) |
|
| 58 | 25 | Trailer control unit |
| 25 | E-CELL: Vehicle gateway control unit | |
| 59 | 20 | →31.05.2005: Trailer control unit |
| 20 | 01.06.2005→: Trailer hitch socket (13-pin) | |
| 5
|
E-CELL: Battery management system control unit 1 | |
| 60 | 20 | Driver seat connector block |
| 61 | 20 | Front passenger seat connector block |
| 62 | 25 | Circuit 15 relay (2) (SA: xenon, cell phone) |
| 63 | 25 | 01.06.2005→: Audio gateway control unit (Japan)
Valid for government vehicles: Roof light bar |
| 7.5 | Emergency call system control unit (USA) (01.06.2005→)
SDAR control unit |
|
| 5 | E-CELL: Battery management system control unit 2 | |
| 64 | 40 | M266: Air pump relay |
| 80 | OM640:
Engine wiring harness/engine compartment connector Glow time output stage |
|
| 65 | 80 | Electric power steering (ES) control unit |
| 66 | 60 | SAM control unit |
| 67 | 50 | Circuit 15R relay (2) (SE) |
| 68 | 50 | M266.920 and M266.940 with transmission 722: AAC with integrated control additional fan motor |
| 60 | OM640.940, OM640.941, M266.960, M266.980 and M266.920, M266.940 with Trailer hitch: AAC with integrated control additional fan motor | |
| 69 | 50 | Circuit 15R relay (1) |
| 70 | 60 | Circuit 15 relay (1) |
| 71 | 150
|
OM640: PTC heater booster |
| 72 | 60 | Circuit 30 connector sleeve
Special vehicle multifunction control unit (SVMCU [MSS]) (Taxi) |
Petrol:
- M266E15 - 1.5L - A150 and A160
- M266E17 - 1.7L - A170 and A 180,
- M266E21 - 2.0L - A200
- M266E21AL - 2.0L - A200 Turbo
Diesel:
- OM640DE20 - 2.0L - A160 CDI, A180 CDI and A200 CDI
| No. | A | Description |
|---|---|---|
| 80 | 30 | Reserved for special-purpose vehicles |
| 81 | 30 | Reserved for special-purpose vehicles |
| 82 | 30 | Reserved for special-purpose vehicles |
| 83 | 30 | Reserved for special-purpose vehicles |
| Relay | ||
| A | Circuit 15R (2) (SA) | |
| B | Circuit 15R (1) | |
| C | Fanfare horn | |
| D | Heated rear window | |
| E | Wiper stage 1/2 | |
| F | Wiper ON/OFF | |
| G | Circuit 15 (1) | |
| H | Backup | |
| I | Air pump | |
| K | Fuel pump | |
| L | Engine circuit 87 | |
| M | Starter | |
| N | Circuit 87F | |
| O | Circuit 15 (2) (SA: xenon, cell phone) | |