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).

Smart Fortwo W451 (2007-2014) - fuse and relay box

Smart Fortwo W451 (2007-2014) - fuse and relay box

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:
CDI control unit;
Electronic gear lever module control;

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);
Tank vent valve;

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:
Hot foil mass air flow sensor;

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;
Automated manual gearbox control unit;

TPM control unit [RDK];
Combination switch

Cockpit switch;
Data link connector;
Starter-alternator control unit;
STH radio remote control receiver (engine 780.009);

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;
Seat occupancy recognition pressure sensor;

Indicator light for disabling the airbag for automatic child Seat recognition;
Safety systems control unit;

ESP control unit;
Steering angle sensor

Steering assist control unit;
Driver’s Seat belt restraint system switch;
Front passenger Seat belt buckle restraint systems switch.

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:
Data link connector;

Engine 660.9:
CDI control unit;

Automated manual gearbox control unit;
Data link connector.

7.5
20 Smart radio 9;
Smart radio 10;Heater / air conditioning control unit;

Front Seat heating (SIH) control unit;
Right wiper switch;

Outside mirror adjustment switch;
Electrically adjustable and heated exterior mirrors;

Soft roof support;
Electronic gear lever module control unit.

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;
Stop light switch.

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];
Fuel filler flap Engine CL [ZV];
Horn switch.

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.

Smart Fortwo W451 (2007-2014) - fuse and relay box

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;
Starter.

200
F91 SAM control unit 100

Relays

Smart Fortwo W451 (2007-2014) - fuse and relay box

Smart Fortwo W451 (2007-2014) - fuse and relay box

 

READ:  Smart Forfour W454 (2004-2007) - fuse and relay box
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);
Fuel pump relay

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

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