Smart Forfour (W454; 2004-2006) fuses and relays

Fuse box diagram (location and assignment of electrical fuses and relays) for Smart Forfour (W454; 2004, 2005, 2006).

Fuse box diagram: Smart Forfour (W454; 2004-2006)

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 Forfour (2004, 2005, 2006)

Fuse box diagram

Interior fuse box diagram: Smart Forfour (2004, 2005, 2006)

Assignment of the fuses and relays in the Instrument Panel Fuse Box
DescriptionA
1Interior illumination
Upper control panel control unit
Left SAM control unit
Rain sensor/light sensor
Instrument cluster
Combination switch
Central gateway control unit
10
2Left SAM control unit / ETACS10
3Left standing lamp and taillamp7.5
4Right parking light and taillamp7.5
5Front wiper20
6Control unit7.5
7Outside mirror heaters7.5
8Right high beam10
9Left high beam10
10Horn10
11Fuel pump15
12Petrol:
Motor electronics control unit
Motor relay
Throttle valve relay
20
13Trailer hitch socket (13-pin) circuit 3015
14Glass sliding roof20
15Rear window wiper motor15
16Cigarette lighter15
17Rear fog lamp7.5
18Outside mirror adjustment7.5
19Diesel:
EDG control unit
15
20Diesel:
EDG control unit
Fuel pump relay 2
Motor relay
7.5
21Right low beam10
22Left low beam, headlamp range adjustment10
23Front fog lamp10/15
24Diagnostic socket, central locking (2004)15
25Trailer hitch socket (13-pin) circuit 1515
26Turn signal lights15
27Audio/subwoofer15
28Anti-theft alarm system10
29Manual transmission20
30Diagnostic socket, central locking (2005-2006)15
31Brake lights
Stop lamp switch (4-pin)
15
32Control unit for air conditioning system, 12 volt7.5
33ESP control unit
Steering assist control unit
Restraint systems control unit (Airbag)
7.5
34Petrol:
Ignition coils
10
35EDG control unit
Fuel pump relay 1
7.5
36Reversing lights7.5
37Rear window heater30
38Seat heater30
39Diesel:
EDG control unit
30
40Heater blower40
41Ignition/starter switch40
42Power windows
Headlamp cleaning system pump
40
43Engine coolant fan motor40
44Electronic selector lever module control unit (with transmission 717.474, 717.475)40
Relays
APower window relay
BHorn relay
CFuel pump 2 relay
DRear fog lamps relay
EStarter relay
FGasoline/diesel engine relay
GPreexcitation alternator
HFan stage 1 relay
IFog lamp relay
JHeater relay
KFuel pump 1 relay
LTransmission relay
MTrailer hitch bridge
NFree (backup relay)
OFan stage 2 relay
PHeadlamp cleaning system relay
QRear window defroster relay
RHeated seats bridge
SLow beam relay
THigh beam relay
UThrottle valve relay (only with engine 134.910, 135.930/950)
Smart Forfour (W454; 2004-2006) fuses and relays December 18, 2018 admin