Toyota Highlander 2003 Fuse Box Info
Passenger compartment fuse box location:
The fuse box is located under the instrument panel behind the coin tray on the driver’s side.
Engine compartment fuse box location:
Fuse Box Diagram | Layout
Passenger compartment fuse box:
| Fuse/Relay N° and Name | Rating | Functions |
| 21. IGN | 7.5A | Gauges and meters, SRS airbag system |
| 22. RADIO NO.2 | 7.5A | Car audio system |
| 23. CIG | 15A | Cigarette lighter |
| 24. D RR DOOR | 20A | Power windows |
| 25. PWR OUTLET | 15A | Power outlets |
| 26. FR FOG | 10A | Front fog lights |
| 27. SRS−IG | 15A | SRS airbag system |
| 28. ECU−IG | 15A | Electric moon roof, anti−lock brake system, vehicle skid control system, shift lock system, charging system, cruise control system, emergency flashers, starting system |
| 29. WIPER | 25A | Windshield wipers and washer |
| 30. P RR DOOR | 20A | Power windows |
| 31. P FR DOOR | 25A | Power windows, door courtesy lights, power door lock system |
| 32. S/ROOF | 20A | Electric moon roof |
| 33. HEATER | 15A | Air conditioning system, electric cooling fan, rear defogger, outside rear view mirror defogger, gauges and meters |
| 34. IG1 | 7.5A | Back−up lights, vehicle skid control system, multiport fuel injection system/sequential multiport fuel injection system, outside rear view mirror heaters, power door lock system, wireless remote control system |
| 35. RR WIP | 15A | Rear window wiper |
| 36. STOP | 20A | Stop lights, high mounted stoplight, anti−lock brake system, vehicle skid control system, shift lock system, cruise control system, multiport fuel injection system/sequential multiport fuel injection system |
| 37. OBD | 7.5A | On−board diagnosis system |
| 38. SEAT HTR | 15A | Seat heaters |
| 39. IG2 | 15A | Multiport fuel injection system/sequential multiport fuel injection system, charging system, starter system |
| 40. WASHER | 20A | Washer fluid level warning light |
| 41. RR FOG | 7.5A | No circuit |
| 42. FR DEF | 20A | Air conditioning system, outside rear view mirror defoggers |
| 43. D FR DOOR | 20A | Power windows, door courtesy lights |
| 44. TAIL | 10A | Tail lights, license plate lights, instrument panel lights, front fog lights, front side marker lights, rear side marker lights, parking lights |
| 45. PANEL | 7.5A | Instrument panel lights |
| 56. AM1 | 40A | Multiport fuel injection system/sequential multiport fuel injection system, starting system |
| 57. POWER | 30A | Power seat |
Engine compartment fuse box (Fuse box 1):
| Fuse/Relay N° and Name | Rating | Functions |
| 1. STARTER | 7.5A | Multiport fuel injection system/sequential multiport fuel injection system |
| 2. ABS3 | 7.5A | Vehicle skid control system |
| 3. HEAD LP RH LWR | 15A | Right−hand headlight (low beam) |
| 4. HEAD LP LH LWR | 15A | Left−hand headlight (low beam) |
| 5. A/F | 25A | Air fuel ratio sensor |
| 6. ALT−S | 7.5A | Charging system |
| 7. TOWING | 20A | Trailer lights |
| 8. HORN | 10A | Horn |
| 9. SECURITY | 15A | Theft deterrent system |
| 10. HEAD LP RH UPR | 10A | Right−hand headlight (high beam) |
| 11. ECU−B | 7.5A | Theft deterrent system, air conditioning system, vehicle skid control system, gauges and meters, wireless remote control system, power door lock |
| 12. EFI | 20A | Multiport fuel injection system/sequential multiport fuel injection system, fuel pump, engine immobiliser system |
| 13. DOOR LOCK | 25A | Power door lock system, theft deterrent system |
| 14. HEAD LP LH UPR | 10A | Left−hand headlight (high beam) |
| 15. RADIO NO.1 | 25A | Car audio system |
| 16. DOME | 10A | Personal light, interior lights, vanity mirror lights, ignition switch light, wireless remote control system, gauges and meters |
| 17. HAZARD | 15A | Emergency flashers, instrument panel light |
| 18. SPARE | 7.5A | Spare fuse |
| 19. SPARE | 15A | Spare fuse |
| 20. SPARE | 25A | Spare fuse |
| 47. AM2 | 30A | Multiport fuel injection system/sequential multiport fuel injection system, starting system |
| 48. ABS2 | 40A | Anti−lock brake system, vehicle skid control system |
| 49. ABS1 | 40A | Anti−lock brake system, vehicle skid control system |
| 50. HEATER | 50A | Air conditioning system |
| 51. RDI | 30A | Electric cooling fans |
| 52. RR DEF | 30A | Rear window defoggers |
| 53. CDS | 30A | Electric cooling fans |
| 54. RDI | 50A | No circuit |
| 55. MAIN | 40A | “HEAD LP RH LWR”, “HEAD LP LH LWR”, “HEAD LP RH UPR” and “HEAD LP LH UPR” fuses |
| 58. ALT | 140A | “ABS1”, “ABS2”, “RDI”, “CDS”, “RR DEF”, “HEATER”, “AM1”, “AM2”, “TAIL”, “PANEL”, “STOP”, “S/ROOF” and “SEAT HTR” fuses |
Engine compartment fuse box - Engine with daytime running light system (Fuse box 2):
| Fuse/Relay N° and Name | Rating | Functions |
| 46. DRL | 7.5A | Daytime running light system |
