Seat Leon (2005) – fuse box diagram
Year of production: 2005
Fuses on left side of dash panel
| Number | Component | Ampers |
| 1 | Petrol and diesel engine control | 10 |
| 2 | ABS/ESP control | 5 |
| 3 | Airbag control | 5 |
| 4 | Heating controls, pressure sensor, heated seats, ESP switch, reverse gear | 5 |
| 5 | Left and right hand side headlight motor, dimmer, GDL control | 5 |
| 6 | Gateway, automatic gearbox lever | 5 |
| 7 | Windscreen relay, heated rear-view mirrors, VDA telephone | 5 |
| 8 | Trailer control | 5 |
| 9 | — | — |
| 10 | — | — |
| 11 | — | — |
| 12 | Door control | 10 |
| 13 | Diagnosis, light switch, brake | 10 |
| 14 | Automatic gearbox | 5 |
| 15 | Wiring control | 7,5 |
| 16 | Heating / air and climate controls | 10 |
| 17 | Rain sensor | 5 |
| 18 | Automatic gearbox, parking aid control | 5 |
| 19 | — | — |
| 20 | ESP control | 5 |
| 21 | D2L (20 147 kW) Engine | 10 |
| 22 | Heater | 40 |
| 23 | Door control | 30 |
| 24 | Cigarette lighter | 25 |
| 25 | Wiring control | 25 |
| 26 | 12 V current sockets | 30 |
| 27 | FSI advance control, petrol relay, EKP 1.6 | 15 |
| 28 | — | — |
| 29 | Flow gauge, engine | 10 |
| 30 | Pre-wired | 20 |
| 31 | Vacuum pump | 20 |
| 32 | Door control | 30 |
| 33 | Sunroof | 30 |
| 34 | Convenience controls | 25 |
| 35 | Alarm sensor, horn | 5 |
| 36 | Headlight washer system | 20 |
| 37 | Seats | 30 |
| 38 | Engine | 10 |
| 39 | Automatic gearbox | 20 |
| 40 | Heater | 40 |
| 41 | Tailgate, power | 15 |
| 42 | Wiring control | 15 |
| 43 | Trailer control | 15 |
| 44 | Trailer control | 20 |
| 45 | Trailer control | 15 |
| 46 | Heating jets, heating controls, air, climate | 5 |
| 47 | Lambda probe | 10 |
| 48 | Lambda probe | 10 |
| 49 | Light switch | 7,5 |
Fuses layout, engine compartment, left part
| Number | Component | Ampers |
| 1 | Cleaning | 30 |
| 2 | Steering column | 5 |
| 3 | Wiring control | 5 |
| 4 | ABS | 30 |
| 5 | AQ gearbox | 15 |
| 6 | Kombi | 5 |
| 7 | — | — |
| 8 | Radio | 15 |
| 9 | Telephone | 5 |
| 10 | Principal relay in the FSI engine compartment and diesel/injection module power supply | 5 |
| Principal relay in the engine compartment D2L (2.0 FSI 147 kW) | 10 | |
| 11 | — | — |
| 12 | Gateway | 5 |
| 13 | Petrol injection module power supply | 25 |
| Diesel injection module power supply | 30 | |
| 14 | Coil | 20 |
| 15 | T71 / 20 FSI engine | 5 |
| Pump relay | 10 | |
| 16 | ADS pump | 30 |
| 17 | Horn | 15 |
| 18 | — | — |
| 19 | Cleaning | 30 |
| 20 | — | — |
| 21 | Lambda probe | 15 |
| 22 | Brake pedal, speed sensor | 5 |
| 23 | 1.6 litre engine, principal relay (relay 100) | 5 |
| T 71 diesel EGR | 15 | |
| 2.0 D2L High pressure fuel pump | 10 | |
| 24 | ARF, gear change valve | 10 |
| 25 | Right lighting | 40 |
| 26 | Left lighting | 40 |
| 27 | 1.6 SLP engine | 40 |
| 1.9 TDI glow plug relay | 50 | |
| 28 | L15 | 40 |
| 29 | Electric windows (front and rear) | 50 |
| Electric windows (front) | 30 | |
| 30 | KLX | 40 |
Position in engine compartment: side box
| Number | Component | Ampers |
| B1 | Alternator < 140 W | 150 |
| Alternator > 140 W | 200 | |
| C1 | Power steering | 80 |
| D1 | PTC’s (Supplementary electrical heating using air) | 100 |
| E1 | Electric ventilator < 500 W / Electric ventilator > 500 W | 50 |
| 80 | ||
| F1 | Multiterminal power voltage supply “30”. Internal fuse box | 100 |
| G1 | Trailer fuse voltage supply in internal fuse box | 50 |
| H1 | — | — |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
