Hi-ya!,at this moment. In this article you will find a description of fuses and relays Smart Roadster (2003-2005) – fuse box
Include with images of box diagrams as well as their locations. Highlighted the cigarette lighter fuse (as the most used thing people look for).
Get tips on Service fuses, changing a fuse, and more.
Smart Roadster (2003-2005) – fuse box diagram
Year of production: 2003, 2004, 2005.
Cigarette lighter fuse (power socket) on the Smarta Roadster (2003-2005) is fuse 21 in the fuse box.
Front fuse box

No |
Amperes [A] |
Description |
1 | 25 | Starter |
2 | twenty | Windshield wipers, washer pump |
3 | twenty | Heater blower, seat heating |
4 | thirty | Electric windows, L. and R. |
5 | 7.5 | Light switch |
6 | 7.5 | Parking lights / rear lights, R. |
7 | 7.5 | Parking lights / tail lights, L. |
8 | twenty | Terminal 87/3 main relay (engine) |
9 | 10 | Terminal 87/2 main relay (engine) |
10 | 15 | Terminal 87/1 main relay (engine) |
11 | 7.5 | Instrument cluster, safety kit, OBD, horn (only with leather sports steering wheel with rocker switch system) |
12 | 15 | Radio CD, interior lighting |
13 | 15 | Fog lights |
14 | 25 | ESP valves |
15 | 15 | Charge air cooler, air conditioning compressor |
16 | 10 | Electric fuel pump |
17 | 15 | Rear window wiper |
18 | 7.5 | Airbag triggering device, ESP |
19 | 7.5 | Mirror adjustment |
twenty | 15 | Radio, CD, instrument cluster, tachometer, OBD, backup lamp, CD changer |
21 | 15 | Power socket, lighter |
22 | 7.5 | Dipped beam, R. |
23 | 7.5 | Dipped beam, L. |
24 | 7.5 | Road lights, R. |
25 | 7.5 | High beam, combination light L. / |
26 | 15 | Brake light |
27 | 7.5 | Engine control unit |
28 | thirty | Heated rear window / engine fan |
29 | thirty | Soft top |
thirty | 40 | Manual gearbox |
31 | thirty | Horn, central locking, remote tailgate unlock |
36 | – | Spare fuse 15 |
37 | 15 | Spare fuse 15 (W450, glass sliding roof) |
38 | – | Spare fuse 15 |
39 | – | Spare fuse 15 |
40 | – | Spare fuse 30 |
41 | – | Spare fuse 30 |
42 | – | Spare fuse 30 |
43 | 25 | Spare fuse 30 |
44 | 25 | Spare fuse 30, seat heating |
Rear fuse box

No |
Amperes [A] |
Description |
32 | thirty | Secondary Air Injection Pump (Emission Control) |
33 | 50 | Ignition switch |
34 | 50 | ESP control unit |
35 | thirty | Power steering control unit |
Mounting frame with relay pin positions

No |
Switchable function |
and | Wiper system relay |
b | Fog lamp relay |
c | Left heated seat controller |
d | Right heated seat control unit |