Smart Fortwo (W450; 2002-2007) fuses and relays



In this article, we consider the first-generation Smart Fortwo (W450) after a facelift, produced from 2002 to 2007. Here you will find fuse box diagrams of Smart Fortwo 2002, 2003, 2004, 2005, 2006 and 2007, get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout) and relay.

Fuse Layout Smart Fortwo 2002-2007

Cigar lighter (power outlet) fuse in the Smart Fortwo is the fuse #21 in the Instrument panel fuse box.

Fuse box location

The fuse box is located under the instrument panel (on the left side).The location of the fuses in the passenger compartment: Smart Fortwo (2002-2007)

Fuse box diagram

Interior fuse box diagram: Smart Fortwo (2002, 2003, 2004, 2005, 2006, 2007)



Assignment of the fuses and relays in the Instrument Panel
2Windshield wiper, washer pump20
3Heater blower
Heated seats, only with heated seats
4Left/right power window30
5Low beam, high beam, front fog lamp, taillamp, backup lamp7.5
6Right standing lamp/taillamp, license plate illumination
Right side-marker lamp, only for Canada
7Left standing lamp/taillamp, parking lamp
Left side-marker lamp, only for Canada
8Engine main relay, circuit 87/320
9Engine main relay, circuit 87/210
10Engine main relay, circuit 87/115
11Instrument cluster, safety console, data link connector Horn, only with leather sport steering wheel with steering wheel rocker switch system7.5
12Radio CD, interior lamp15
13Front fog lamp15
14ESP control unit25
15Charge air fan motor
Air conditioning compressor, only with air conditioning system Plus
16Electric fuel pump10
17Rear window wiper (fortwo coupe)15
18ESP control unit, restraint systems control unit7.5
19Outside mirror adjustment, only with electrically adjustable and heated outside mirrors7.5
20Radio, instrument cluster, tachometer, data link connector, backup lamp CD changer15
21Interior socket
Cigarette lighter, only with smoking set
22Right low beam7.5
23Left low beam7.5
24Right high beam7.5
25Left high beam, high beam indicator lamp7.5
26Stop lamps15
27MEG engine electronics control unit, EDG engine control unit7.5
28Rear window heater (fortwo coupe), cooling fan motor30
29Soft top (fortwo cabrio)
Electric glass sliding roof (as of model year 2005)
30Electronic selector lever module control unit40
31Horn, central locking, remote trunk lid release30
32Secondary air injection pump (emission control)30
33Ignition switch50
34ESP control unit (N47-5)50
35Steering assist control unit (N68)30
R1Electric glass sliding roof (up to model year 2004)15
R2Multifunction control unit, only for Canada5
R3Not Used
R4Not Used
R5Multifunction control unit, only for Canada15
R6Not Used
R7Not Used
R8Soft top (fortwo cabrio)25
R9Heated seats25
AFog lamp relay
BLeft heated seat control unit
CRight heated seat control unit


Relays inside the fuse box

To open the fuse box, remove the three Torx10 screws and unclip all the plastic clips around the outside.Relays inside the fuse box (location): Smart Fortwo (2002-2007)

Relays inside the fuse box: Smart Fortwo (2002, 2003, 2004, 2005, 2006, 2007)

Relays inside the fuse box
FusesSends Power To...
18, 9, 10Evap purge valve Z36 & Z35
2Front wiper motor
3Rear wiper motor
432Secondary air injection pump
51Starter motor
7Rear window and side mirror heater
8Soft top motor(s)
924, 25High beam headlights
1022, 23Low beam headlights
115, 11, 12, 13, 14, 15, 16ECU, light switch, speedo, dash buttons, OBD, CD, interior light, fog lights, ESP controller, AC, charge/intercooler, fuel pump
126, 7Fuel pump, parking lights, boot release, rear lights
133, 4Heater fan, heated seats, power windows
1431Central locking
16Boot release