Smart Fortwo W451 (2007-2014) – fuse and relay box
Diagrams of fuse and relay boxes – Smart Fortwo W451
Applies to vehicles manufactured in the years:
2007, 2008, 2009, 2010, 2011, 2013, 2014.
The cigarette lighter (power socket) fuse on the Smart Fortwo is fuse # 21 in the instrument panel fuse box.
Instrument panel fuse box
The fuse box is located under the dashboard (on the left side).
| Number | Description | Amperes [A] |
|---|---|---|
| 1 | Engine 132.9, 660.9: Starter; Engine 780.009: Brake servo vacuum pump. |
25 |
| 2 | Wiper motor | 25 |
| 3 | Control unit for convenient window lifter function | twenty |
| 4 | Blower motor | 25 |
| 5 | Left front fog lamp; Right front fog lamp. |
10 |
| 6 | Right rear light; Right parking lamp; Left license plate lamp; Right license plate lamp. |
7.5 |
| 7 | Left tail light; Left parking light. |
7.5 |
| 8 | Engine 132.9: Secondary air injection pump relay; ME-SFI [ME] control unit; Electronic gear lever module control unitAutomated manual gearbox control unit; Cylinder 1 ignition coil; Cylinder 2 ignition coil; Cylinder 3 ignition coil; Engine 660.9: Automated manual transmission unit; Control unit; Engine 780.009: High voltage battery heater. |
25 |
| 9 | Engine 132.9: O2 sensor after CAT O2 sensor in front of CAT; Camshaft timing adjustment solenoid; External shut-off valve;Activated carbon canister shut-off valve; EGR reversing valve (with engine 132.910); Pressure regulating valve (for engine 132.930) Engine 780.009: Electric drive and high voltage charger fan motor; Engine 660.9: CDI control unit. |
7.5 |
| 10 | Engine 132.9: O2 sensor upstream of CAT; Secondary air injection pump diverter valve; Cylinder 1 fuel injection valve; Cylinder 2 fuel injection valve; Cylinder 3 fuel injection valveEngine 780.009: Electric drive and high voltage charger coolant pump; Coolant pump for the battery cooling system; Engine 660.9: O2 sensor in front of CAT CDI control unit; Glow output stage; EGR reversing valve. |
15 |
| 11 | ESP control unit | 25 |
| 12 | Instrument cluster; Additional instruments; Microwave sensor;Rain sensor / light sensor; Alarm siren with tilt sensor; Left turn signals / brake lamp relay; Right turn signals / brake lamp relay Mirror heating relay; TPM control unit [RDK]; Cockpit switch; Rear fog lamp relay. |
10 |
| 13 | Spare fuse | 15 |
| 14 | Refrigerant compressor; Charge air fan motor. |
15 |
| 15 | Smart radio 9; Smart radio 10; Front interior lamp; Soft top – opening and closing. |
15 |
| 16 | Engine 132.9: Fuel pump with fuel gauge sensor; ME-SFI [ME] control unit;Engine 660.9: Fuel pump with fuel gauge sensor; CDI control unit; Engine 780.009: Blower motor relay 1. |
15 |
| 17 | Rear door wiper motor | 15 |
| 18 | Instrument cluster;
Lateral and longitudinal speed sensor; Indicator light for disabling the airbag for automatic child seat recognition; ESP control unit; Steering assist control unit; |
10 |
| 19 | Engine 132.9: ME-SFI [ME] control unit;Automated manual gearbox control unit; Data link connector; TPM control unit [RDK]; Starter-alternator control unit; Engine 780.009: Engine 660.9: Automated manual gearbox control unit; |
7.5 |
| 20 | Smart radio 9; Smart radio 10;Heater / air conditioning control unit; Front seat heating (SIH) control unit; Outside mirror adjustment switch; Soft roof support; |
10 |
| 21 | Internal socket | 15 |
| 22 | Left low beam | 7.5 |
| 23 | Right low beam | 7.5 |
| 24 | Engine 132.9:
Electronic gear lever module control unit; Engine 132.9, 660.9, 780.009: Rear fog light relay; |
15 |
| 25 | Right high beam | 7.5 |
| 26 | Left high beam | 7.5 |
| 27 | Engine 132.9: ME-SFI [ME] control unit | 7.5 |
| 28 | Heated rear window | 40 |
| 29 | Soft top – closing and opening | thirty |
| 30 | Engine 132.9, 660.9: automated manual gearbox control unit;
Motor 780.009: high voltage battery and indoor fan motor. |
40 |
| 31 | Horn; Right door CL motor;Left front door central locking motor; Rear door motor CL motor [ZV]; |
twenty |
| 32 | Empty | – |
| 33 | Ignition / starter switch | 50 |
| 34 | ESP control unit | 40 |
| 35 | Power steering control unit | thirty |
| R1 | Engine 132.9, 660.9:
Mirror heater relay |
7.5 |
| R2 | Engine 132.9:
Stop light switch |
7.5 |
| R3 | Empty | – |
| R4 | Engine 780.009:
Mirror heater relay |
7.5 |
| R5 | Engine 780.009: High voltage charger control unit;Communication control unit with external socket. |
7.5 |
| R6 | Engine 780.009: EVCM electric vehicle control unit | 15 |
| R6 | Engine 132.9, 660.9: Hazard flasher relay;Brake light relay. |
10 |
| R7 | from 2.9.10; engine 132.9:
Front interior lamp; Engine 660.9: Front interior lamp. |
– |
| R7 | Engine 780.009:
EDCM electric motor control unit. |
10 |
| R8 | from 2.9.10; engine 132.9:
Sound amplifier; Engine 660.9: Sound amplifier. |
twenty |
| R8 | Engine 780.009:
PDU high voltage splitter control unit |
7.5 |
| R9 | Engine 132.9, 660.9:
Front seat heating (SIH) control unit; Engine 780.009: Brake servo vacuum pump control unit. |
25 |
Fuses near the battery
Remove the floor covering and cover.
| Number | Description | Amperes [A] |
|---|---|---|
| F36 | Engine 132.9: Secondary air injection pump | 50 |
| F58 | Engine 780.009: EDCM electric motor control unit |
60 |
| F58 | Engine 132.9:
Alternator; |
200 |
| F91 | SAM control unit | 100 |
Relays
| Number | Relays |
|---|---|
| A | Left turn signal / stop lamp relay;
High voltage battery heater backup relay (ECE vehicles only). |
| b | Right turn signal / stop lamp relay;
Radiator fan motor relay (ECE vehicles only); |
| C. | Mirror heater relay;
Rear fog light relay. |
| K57 | High voltage battery heater support relay |
| K59 | Radiator fan motor relay |
| K61 | Blower motor relay 1 |
| K62 | Blower motor relay 2 |