2014-2017 Smart Fortwo / Forfour Fuse Box Diagram (A453, C453, W453)

16.04.2017 (US:04.16.17), Category: Fortwo / Forfour

Smart Fortwo / Forfour
1998-2002 2002-2007 2007-2014 2014-present 2004-2006 2014-present
W450 450 W451 W453 W454 W453

Vehicle interior fuse and relay module

2014-2017 Smart Fortwo / Forfour Fuse Box Diagram (A453, C453, W453)


No.
Fused function
A
1 Rear roof rack electrical connection 20
2 - -
3 - -
4 - -
5 Driver-side SAM control unit 25
6 Driver-side SAM control unit 25
7 Driver-side SAM control unit 25
8 Center SAM control unit
Radio
Radio over connector sleeve for terminal 15 R
15
9 - -
10 Horn 15
11 Battery sensor and driver-side SAM control unit 5
12 Front cigarette lighter with ashtray illumination 15
13 - -
14 Automatic transmission protected through connector sleeve for circuit 30
Diagnostic connector
Valid for electric vehicle:
   Fused circuit 30 connector sleeve
   Diagnostic connector
20
15 Supply for fused circuit 30 connector sleeve 15
16 Motor electronics protected through connector sleeve for circuit 30
Valid for electric vehicle: Supply for fused circuit 30 connector sleeve
5
17 Supply protected through connector sleeve for circuit 30 15
18 Brake lights switch 10
19 Outside mirror adjustment switch 5
20 Transponder coil
Electronic Stability Program control unit and brake light switch
Protected through connector sleeve for circuit 30
3
21 Light functions protected through connector sleeve for circuit 30 10
22 Steering wheel angle sensor
Dual-clutch transmission control unit
5
23 - -
24 Center SAM control unit 15
25 Center SAM control unit 10
26 Center SAM control unit 15
27 Center SAM control unit 20
28 Driver-side SAM control unit 10
29 Driver-side SAM control unit 10
30 Combination switch
Alarm siren
Supply for fused circuit 30 connector sleeve (valid for electric vehicle)
15
31 Instrument cluster and additional instruments 10
32 - -
33 Supplemental Restraint System control unit 5
34 Combination switch 5
35 Electrical power steering control unit 5
36 Center SAM control unit 5
37 Driver-side SAM control unit 30
38 Air conditioning power supply solenoid switch 40
39 Starter
Through starter relay
30
Valid for electric vehicle: Blower motor 40
1/1 Valid for electric vehicle: Electric vehicle circuit 30 connector sleeve supply 10
1/2 Valid for electric vehicle:  
   Brake booster vacuum pump control unit
   Power electronics control unit
-
1/3 - -
1/4 Sound system amplifier control unit 20
1/5 Dual clutch transmission control unit
Valid for electric vehicle: Electric drive control unit
5
1/6 Left front power window motor and right front power window motor 25
1/7 Left electrically adjustable and heated outside mirror and right electrically adjustable and heated outside mirror 5
1/8 Valid for electric vehicle:
   Front passenger seat heater control unit
   Driver seat heater control unit
25
1/9 - -
1/10 Valid for electric vehicle: Steering wheel heater relay -
2/1 Supply for soft top control drive unit 20
2/2 Supply for soft top control drive unit 20
2/3 - -
2/4 - -
Relay
K1 Heated rear window/outside mirrors relay
K2 Front power window relay
K3 Sliding roof relay
K4 Front headlamps relay
K5 Starter relay
K6 Fanfare horn relay
K7 Valid for electric vehicle: Steering wheel heater relay


Combustion engine fuse and relay module (F1)

No.
Fused function
A
1 Internal combustion engine relay module
Valid for electric vehicle: -
Diode
2 Valid for USA: Supply for vacuum pump relay Diode
Valid for electric vehicle:
   Transmission mode recognition sensor
   Electric drive control unit
15
3 Fuel pump with fill level sensor and temperature sensor 20
Valid for electric vehicle: Electric vehicle drive motor fan relay 40
4 Supply for fused circuit 30 connector sleeve 25
Valid for electric vehicle: Battery cooling system coolant pumps relay 30
5 Supply for connector sleeves for circuit 87 15
Valid for electric vehicle: Battery cooling system coolant pump 15
6 Refrigerant compressor relay 15
Valid for electric vehicle:
   Battery management system control unit
   Electric drive control unit
5
7 Fan
Through fan relay
10
Valid for electric vehicle: Power electronics control unit power supply connector sleeve supply 20
8 Dual clutch transmission control unit 10
Valid for electric vehicle: Circuit 87 supply connector sleeve 15
Relay
K1 Engine function circuit 87 relay
K2 Fan relay
K3 Ignition coils/fuel pump actuation relay
K4 Valid for electric vehicle: Battery cooling system coolant pumps relay

Battery clamp fuse (F108)

No.
Fused function
A
F1 Electrical fuse 3A (F108f3A) and electrical fuse 3B (F108f3B)
Valid for electric vehicle:
   Power supply fuse and relay module (F1)
   DC/DC converter control unit
200
F2A Vehicle interior fuse and relay module supply (F2)
Protected through connector sleeve for circuit 30
Connector sleeve for circuit 30
70
F2B Electrical power steering control unit 60
F3A Vehicle interior fuse and relay module supply (F2)
Ignition lock
Protected through connector sleeve for circuit 30
Connector sleeve for circuit 30
70
F3B Electronic Stability Program control unit 50


Power supply fuse and relay module

No.
Fused function
A
1 Heated rear window over relay for heated rear window/outside mirrors 30
2 Front passenger seat heater control unit
Driver seat heater control unit
Valid for electric vehicle: Brake booster vacuum pump control unit
30
3 Supply for Electronic Stability Program control unit 25
4 Valid for electric vehicle: -
Electrical fuse 1 and electrical fuse 2
40
Sliding roof relay 25
5 Supply for internal combustion engine fuse and relay module 60
6 Dual clutch transmission control unit
Protected through connector sleeve for circuit 30
50
Valid for electric vehicle: Vehicle interior fuse and relay module supply 40
7 Fan motor
Over fan relay
30
Fan solenoid switch
ICE combustion engine cooling
30
8 - -
9 Valid for USA:Secondary air injection pump
Valid for electric vehicle:
   Heater for high-voltage battery
   Over heater relay for high-voltage battery
60
Relay
K1 Fan relay

Fuse Box Layout Smart Fortwo / Forfour - 0.9, 1.0, 0.9 Brabus and Electric Drive (A453, C453, W453; 2014, 2015, 2016, 2017)