Smart EQ Forfour 2021 Fuse Box Info
Passenger compartment fuse box location:
The fuse box is located in the glove box, behind the cover (left-hand drive vehicle).
The fuse box is located to the right of the steering wheel (right-hand drive vehicle).
Fuse Box Diagram | Layout
Passenger compartment fuse box:
| Fuse/Relay N° | Rating | Functions |
| 1 | - | - |
| 2 | 25A | Power windows (with automatic reversing function) |
| 3 | 5A | Electrical outside mirrors |
| 4 | 20A | Radio amplifier |
| 5 | 25A | Daytime running lamps, right; headlamps, front fog lamp |
| 6 | 25A | Daytime running lamps, left; licence plate lighting, tail lamps |
| 7 | 15A | Alarm system, horn |
| 8 | 5A | Central control unit, audio system |
| 9 | 5A | Electric motor control unit |
| 10 | 15A | Horn |
| 11 | 30A | Rear window heating |
| 12 | 15A | 12 V socket / cigarette lighter |
| 13 | - | - |
| 14 | 20A | Audio system, media system, media system connect |
| 15 | 5A | Power steering control unit |
| 16 | 5A | Airbag |
| 17 | 15A | Folding roof control unit (not for cabrio), headlamp range control, cruise control, limiter, parking assistance systems, emergency braking system, interior rearview mirror, seat heating |
| 18 | 10A | Brake lamps |
| 19 | 5A | Electrical outside mirrors |
| 20 | 3A | Brake control system |
| 21 | 10A | Tailgate lamp, roof lighting, roof opening, seat belt warning, sound generator, rain/light sensor |
| 22 | 5A | Steering wheel angle sensor |
| 23 | 15A | Reversing lamp, rear window wiper, windscreen wiper |
| 24 | 15A | Central control unit |
| 25 | 5A | Light control unit |
| 26 | 15A | Turn signal |
| 27 | 20A | Central locking system |
| 28 | - | - |
| 29 | - | - |
| 30 | - | - |
| 31 | 10A | Instrument cluster |
| 32 | 15A | Telematic control unit, charge communications module, service box (ready-to), media system, media system connect |
| 33 | 5A | Light control unit |
| 34 | 5A | Light switch |
| 35 | 251/302A | Window lifter (without automatic reversing function) |
| 36 | - | - |
| 37 | 30A | Windscreen wipers |
| 38 | 5A | High-voltage battery |
| 39 | 40A | Cooling fan |
| FA1 | 10A | Air conditioning, battery/electric motor cooling, selector lever, HV crash sensor, rear window heater |
| FA2 | 10A | HV power supply control unit |
| FA3 | - | - |
| FA4 | 15A | Folding roof (not for all models) |
| FA5 | - | - |
| FA6 | - | - |
| FA7 | - | - |
| FA8 | 25A | Driver/front passenger seat heating |
| FA9 | 15A | Rear seat heating (only forfour) |
| FA10 | 5A | Steering wheel heating |
| FB1 | 20A | 1 Soft top (only cabrio) |
| FB2 | 20A | 2 Soft top (only cabrio) |
| FB3 | - | - |
| FB4 | - | - |
1 1 window without reversing function
2 2 windows without reversing function
