Seat Leon (2008) – fuse box diagram
Year of production: 2008
Fuses on left side of dash panel
| Number | Component | Ampers |
| 1 | Diagnosis Switchboard/Instrument lights / Headlights switchboard/ Flowmeter/ Heated wipers | 10 |
| 2 | Engine control unit/ ABS-ESP switchboard/ Automatic gearbox/ Instrument panel/ Trailer switchboard/ Light switch / Brake sensor/ Power steering/ Right and left headlights | 5 |
| 3 | Airbag | 5 |
| 4 | Heating/Reverse gear switch (ASR-ESP switch/Telephone/Jets/Electrochromic mirror/Tomtom route finder | 5 |
| 5 | Right xenon headlight | 5 |
| 6 | Left xenon headlight | 5 |
| 7 | — | — |
| 8 | — | — |
| 9 | — | — |
| 10 | — | — |
| 11 | — | — |
| 12 | Central locking | 10 |
| 13 | Diagnosis/ Lights switch/ Rain sensor | 10 |
| 14 | Automatic gearbox / Heating/ ESP switchboard/ Automatic gearbox lever | 5 |
| 15 | Cable control unit | 7,5 |
| 16 | — | — |
| 17 | Alarm | 5 |
| 18 | — | — |
| 19 | — | — |
| 20 | — | — |
| 21 | Engine management | 10 |
| 22 | Fan switch | 40 |
| 23 | Electric windows (front) | 30 |
| 24 | — | — |
| 25 | Rear window heater | 25 |
| 26 | Rear electric windows | 30 |
| 27 | Engine (fuel control unit/pump relay) | 15 |
| 28 | Convenience controls | 25 |
| 29 | — | — |
| 30 | Automatic gearbox | 20 |
| 31 | Vacuum pump | 20 |
| 32 | — | — |
| 33 | Sunroof | 30 |
| 34 | Convenience controls | 25 |
| 35 | — | — |
| 36 | Headlight washer system | 20 |
| 37 | Heated seats | 30 |
| 38 | Engine management | 10 |
| 39 | — | — |
| 40 | Fan switch | 40 |
| 41 | Rear wiper motor / Switchboard wiring | 15 |
| 42 | 12 V socket/ Cigarette lighter | 15 |
| 43 | Trailer bracket preinstallation | 15 |
| 44 | Trailer bracket preinstallation | 20 |
| 45 | Trailer bracket preinstallation | 15 |
| 46 | — | — |
| 47 | Engine management | 10 |
| 48 | Engine management | 10 |
| 49 | — | — |
Fuses layout, engine compartment, left part
| Number | Component | Ampers |
| 1 | Clean | 30 |
| 2 | — | — |
| 3 | Cable control unit | 5 |
| 4 | ABS | 30 |
| 5 | AQ gearbox | 15 |
| 6 | Kombi / Steering column | 5 |
| 7 | Ignition key | 40 |
| 8 | Radio | 15 |
| 9 | Telephone/TomTom Navigator | 5 |
| 10 | Engine management | 5 |
| Engine management | 10 | |
| 11 | — | — |
| 12 | Gateway | 5 |
| 13 | Petrol injection module supply | 25 |
| Diesel injection module supply | 30 | |
| 14 | Coil | 20 |
| 15 | Engine management | 5 |
| Fuel pump relay | 10 | |
| 16 | Right lighting | 30 |
| 17 | Horn | 15 |
| 18 | — | — |
| 19 | Clean | 30 |
| 20 | — | — |
| 21 | Lambda probe | 15 |
| 22 | Brake pedal, speed sensor | 5 |
| 23 | Engine management | 5 |
| Engine management | 10 | |
| Engine management | 15 | |
| 24 | ARF, change valve | 10 |
| 25 | ABS pump | 40 |
| 26 | Left lighting | 40 |
| 27 | Engine management | 40 |
| Engine management | 50 | |
| 28 | — | — |
| 29 | Electric windows (front and rear) | 50 |
| Electric windows (front) | 30 | |
| 30 | Ignition key | 40 |
Position in engine compartment: side box
| Number | Component | Ampers |
| B1 | Alternator < 140 W | 150 |
| Alternator > 140 W | 200 | |
| C1 | Power steering | 80 |
| D1 | Multi-terminal voltage supply “30”. Internal fuse box | 100 |
| E1 | Ventilator < 500 W / Ventilator > 500 W | 50 |
| 80 | ||
| F1 | PTCs (Supplementary electrical heating using air) | 80 |
| G1 | PTC (Supplementary electrical heating using air) | 40 |
| H1 | Central locking control unit | — |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.