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Fuse box diagram (fuse layout), location, and assignment of fuses and relays Smart Roadster (2003, 2004, 2005, 2006).
Checking and Replacing Fuses
The electrical fuses in your vehicle serve to switch off malfunctioning power circuits. If a fuse is blown, the components and systems secured by that fuse will stop operating. A blown fuse can be identified by the melted metal strip inside it.
Before replacing fuses:
- Set the parking brake.
- Make sure the gear selector lever is in park position P.
- Turn off all electrical accessories.
- Turn off the engine.
- Remove the key from the starter switch.
A blown fuse must be replaced by an appropriate spare fuse (recognizable by its color or the fuse rating given on the fuse) of the amperage recommended in the fuse chart.
- From the fuse chart determine which fuse belongs to the malfunctioning accessory or component.
- Remove the respective fuse.
- Replace the defective fuse with a new one of the same amperage.
If a newly inserted fuse blows again, have the cause determined and rectified at an authorized Smart center.
Notice
- Only use fuses approved by Smart with the specified amperage for the system in question and do not attempt to repair or bridge a blown fuse this may cause an overload leading to a fire, and/or cause damage to electrical components and/or systems. Contact a smart center if you encounter any electrical problems.
- Never use a fuse with a higher amperage rating, or any other object, in place of a fuse. This may cause extensive damage and possibly a fire.
- We recommend always carrying replacement fuses in the vehicle.
Location
The fuse box is located on the driver’s side below the dashboard.
Instrument Panel Fuse Box Diagram
Front side:
Rear-side:
Relay:
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| № | A | Consumers |
|---|---|---|
| 1 | 25 | Starter |
| 2 | 20 | Windscreen wipers, washer pump |
| 3 | 20 | Heater blower, seat heater |
| 4 | 30 | Power windows, L. & R. |
| 5 | 7.5 | Light switch |
| 6 | 7.5 | Parking lights/tail lights, R. |
| 7 | 7.5 | Parking lights/tail lights, L. |
| 8 | 20 | Terminal 87/3 master relay (engine) |
| 9 | 10 | Terminal 87/2 master relay (engine) |
| 10 | 15 | Terminal 87/1 master relay (engine) |
| 11 | 7.5 | Instrument cluster, safety cluster, OBD, Horn (only with leather sport steering wheel with steering wheel rocker switch system) |
| 12 | 15 | Radio CD, interior light |
| 13 | 15 | Fog lamps |
| 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 |
| 20 | 15 | Radio, CD, instrument cluster, tachometer, OBD, backup lamp, CD changer |
| 21 | 15 | Power socket, Cigarette lighter |
| 22 | 7.5 | Low beam light, R. |
| 23 | 7.5 | Low beam light, L. |
| 24 | 7.5 | High beam light, R. |
| 25 | 7.5 | High beam light, L./combined light |
| 26 | 15 | Brake light |
| 27 | 7.5 | Engine control unit |
| 28 | 30 | Rear window heater/engine fan |
| 29 | 30 | Soft top |
| 30 | 40 | Manual gearbox |
| 31 | 30 | Horn, central locking, rear lid remote unlocking |
| 36 | - | Backup fuse 15 |
| 37 | 15 | Backup fuse 15 (W450, glass sliding roof) |
| 38 | - | Backup fuse 15 |
| 39 | - | Backup fuse 15 |
| 40 | - | Backup fuse 30 |
| 41 | - | Backup fuse 30 |
| 42 | - | Backup fuse 30 |
| 43 | 25 | Backup fuse 30 |
| 44 | 25 | Backup fuse 30, seat heater |
| 32 | 30 | Secondary air injection pump (emission control) |
| 33 | 50 | Ignition switch |
| 34 | 50 | ESP control unit |
| 35 | 30 | Steering assist control unit |
| A | Wiper system relay | |
| B | Fog lamp relay | |
| C | Left heated seat control unit | |
| D | Right heated seat control unit | |
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