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In this article, you will find information about the fuses of the Lexus RX350 (AL10) (models 2010, 2011, and 2012), including diagrams of the fuse boxes, a list of fuses, their designation, and the location of the fuse blocks within the vehicle.
Checking and Replacing Fuses in Lexus RX 350
The fuses are designed to blow before the entire wiring harness is damaged. If any of the electrical components do not operate, a fuse may have blown. If this happens, check and replace the fuses as necessary. Replace it with one of an appropriate amperage rating. The amperage rating can be found on the fuse box lid.
If the new fuse immediately blows out, there is a problem with the electrical system. Have your Lexus dealer correct it as soon as possible.
Caution!
- Never use a fuse of a higher amperage rating than indicated, or use any other object in place of a fuse.
- Always use a genuine Lexus fuse or equivalent. Never replace a fuse with a wire, even as a temporary fix. This can cause extensive damage or even fire.
- Do not modify fuses or the fuse box.
- Before replacing the fuses, have the cause of electrical overload determined and repaired by your Lexus dealer.
Location of Fuse Boxes
Engine Compartment:
Push the tab in and lift the lid off.
Removing the engine compartment cover:
Passenger Compartment:
Remove the lid.
Fuse Box Diagrams
2010
Engine Compartment Fuse Box
| № | Fuse | A | Circuit |
|---|---|---|---|
| 1 | RDI FAN NO.1 | 80A | Electric cooling fans |
| 2 | RR DEF | 50A | Rear window defogger |
| 3 | AIR SUS | 50A | Electronically modulated air suspension system |
| 4 | HTR | 50A | Air conditioning system |
| 5 | SPARE | 30A | - |
| 6 | SPARE | 40A | - |
| 7 | ABS NO.2 | 30A | Anti-lock brake system |
| 8 | H-LP CLN | 30A | Headlight cleaner |
| 9 | PBD | 30A | Power back door system |
| 10 | ST | 30A | Starter system |
| 11 | PD | 50A | Daytime running light system, A/F, H-LP RH HI, H-LP LH LO, H-LP RH LO, H-LP LH HI, HORN, S-HORN, multiplex communication system, multiport fuel injection system/ sequential multiport fuel injection system |
| 12 | ABS NO.1 | 50A | Anti-lock brake system |
| 13 | EPS | 60A | Electric power steering system |
| 14 | ALT | 140A | FUEL OPN, DR LOCK,OBD, RR FOG, S/ROOF, 4WD, INVERTER, ECU IG1 NO.1, ECU IG1 NO.2, PANEL, GAUGE NO.1 |
| 15 | AMP1 | 30A | Audio system |
| 16 | EFI MAIN | 30A | Multiport fuel injection system/ sequential multiport fuel injection system, EFI NO.1, EFI NO.2 |
| 17 | AMP2 | 30A | Audio system |
| 18 | IG2 | 30A | Starter system, IGN, GAUGE NO.2, ECU IG NO.2 |
| 19 | IP JB | 25A | Power door lock system |
| 20 | STR LOCK | 20A | Starter system |
| 21 | RAD NO.3 | 15A | Meters and gauges lights, instrument panel lights, navigation system, audio system, rear seat entertainment system |
| 22 | HAZ | 15A | Emergency flashers |
| 23 | ETCS | 10A | Multiport fuel injection system/ sequential multiport fuel injection system |
| 24 | RAD NO.1 | 10A | Audio system |
| 25 | AM2 | 7.5A | Starting system |
| 26 | ECU-B NO.2 | 7.5A | Air conditioning system, front passenger occupant classification system, starter system |
| 27 | MAYDAY | 7.5A | - |
| 28 | IMMOBI | 7.5A | - |
| 29 | ALT-S | 7.5A | Charging system |
| 30 | IGN | 10A | Starter system, multiport fuel injection system/sequential multiport fuel injection system |
| 31 | DOME | 10A | Vanity mirror lights, luggage compartment lights, interior lights, personal lights |
| 32 | ECU-B NO.1 | 7.5A | Interior lights, personal lights, tilt and telescopic steering, multiplex communication system, meters and gauges, power window, driving position memory system, power seats, power back door, head-up display, starter system, air conditioning system, power door lock system |
| 33 | EFI NO.1 | 10A | Multiport fuel injection system/ sequential multiport fuel injection system |
| 34 | WIP-S | 7.5A | Windshield wipers and washer |
| 35 | AFS | 7.5A | Adaptive front-lighting system |
| 36 | BK/UP LP | 7.5A | Buck-up lights |
| 37 | HEATER NO.2 | 7.5A | Air conditioning system, AWD system |
| 38 | ECU IG1 | 10A | Adaptive front-lighting system, headlight cleaner, cooling fan, cruise control, electronically modulated air suspension system, vehicle stability control, vehicle dynamics integrated management |
| 39 | EFI NO.2 | 10A | Multiport fuel injection system/ sequential multiport fuel injection system |
| 40 | F/PUMP | 15A | Multiport fuel injection system/ sequential multiport fuel injection system |
| 41 | DEICER | 25A | Windshield wipers and washer |
| 42 | STOP | 7.5A | Vehicle stability control, vehicle dynamics integrated management, high mounted stoplight |
| 43 | TOWING BATT | 20A | Trailer battery |
| 44 | TOWING | 30A | Trailer lights |
| 45 | FILTER | 10A | Condenser |
| 46 | IG1 MAIN | 30A | ECU IG1, BK/UP LP, HEATER NO.2, AFS |
| 47 | H-LP RH HI | 15A | Right-hand headlight (high beam) |
| 48 | H-LP LH HI | 15A | Left-hand headlight (high beam) |
| 49 | BIXENON | 10A | Discharge headlight |
| 50 | H-LP RH LO | 15A | Right-hand headlight (low beam) |
| 51 | H-LP LH LO | 15A | Left-hand headlight (low beam) |
| 52 | HORN | 10A | Horn |
| 53 | A/F | 20A | Multiport fuel injection system/ sequential multiport fuel injection system |
| 54 | S-HORN | 7.5A | Security horn |
Instrument Panel Fuse Box
| № | Fuse | A | Circuit |
|---|---|---|---|
| 1 | P/POINT | 15A | Power outlet |
| 2 | ECU-ACC | 10A | Navigation system, outside rear view mirror, multiplex communication system, multi-information display, head-up display |
| 3 | CIG | 15A | Power outlet |
| 4 | RADIO NO.2 | 7.5A | Audio system, power outlet |
| 5 | GAUGE NO.1 | 10A | Emergency flashers, navigation system, head-up display |
| 6 | ECU-IG1 NO.3 | 10A | Outside rear view mirror, windshield wipers and washer, seat heaters, starter system, power outlet, moon roof, Automatic High Beam |
| 7 | ECU-IG1 NO.1 | 10A | Multiplex communication system, electric power steering system, shift lock control system, tilt and telescopic steering, starter system, automatic transmission system, power back door, tire pressure warning system |
| 8 | S/ROOF | 30A | Moon roof |
| 9 | FUEL OPN | 7.5A | Fuel filler door opener |
| 10 | PSB | 30A | Pre-collision seat belt |
| 11 | TI&TE | 30A | Tilt and telescopic steering system |
| 12 | DR LOCK | 10A | Power door lock system |
| 13 | FR FOG | 15A | Front fog lights |
| 14 | P-SEAT LH | 30A | Power seat (left-side) |
| 15 | 4WD | 7.5A | AWD system |
| 16 | INVERTER | 20A | - |
| 17 | RR FOG | 7.5A | - |
| 18 | D/L ALT B | 25A | Multiplex communication system |
| 19 | HEATER | 10A | Air conditioning system |
| 20 | ECU-IG1 NO.2 | 10A | Air conditioning system, multiport fuel injection system/sequential multiport fuel injection system, SRS airbag system, multi-information display |
| 21 | PANEL | 10A | Switch illumination, navigation system, height control system, headlight cleaner, windshield wiper de-icer, seat heater, power back door, audio system, multi-information display, air conditioning system |
| 22 | TAIL | 10A | Parking lights, side marker lights, tail lights, license plate lights, front fog lights, towing converter |
| 23 | AIR SUS | 20A | Electronically modulated air suspension system |
| 24 | P-SEAT RH | 30A | Power seat (right-side) |
| 25 | OBD | 7.5A | On-Board diagnosis |
| 26 | FR DOOR | 25A | Front power window (right-side) |
| 27 | RR DOOR | 25A | Rear power window (right-side) |
| 28 | FL DOOR | 25A | Front power window (left-side) |
| 29 | RL DOOR | 25A | Rear power window (left-side) |
| 30 | FR WASH | 25A | Windshield wipers and washer |
| 31 | RR WIP | 15A | Windshield wipers and washer |
| 32 | RR WASH | 20A | Windshield wipers and washer |
| 33 | FR WIP | 30A | Windshield wipers and washer |
| 34 | ECU IG2 | 10A | Starter system, Intuitive parking assistsensor, AWD system |
| 35 | GAUGE NO.2 | 7.5A | Starter system |
| 36 | RH S-HTR | 15A | Seat heater (right-side) |
| 37 | LH S-HTR | 15A | Seat heater (left-side) |
2011-2012
Engine Compartment Fuse Box
| № | Fuse | A | Circuit |
|---|---|---|---|
| 1 | RDI FAN NO.1 | 80A | Electric cooling fans |
| 2 | RR DEF | 50A | Rear window defogger |
| 3 | AIR SUS | 50A | - |
| 4 | HTR | 50A | Air conditioning system |
| 5 | SPARE | 30A | - |
| 6 | SPARE | 40A | - |
| 7 | ABS NO.2 | 30A | Anti-lock brake system |
| 8 | H-LP CLN | 30A | Headlight cleaner |
| 9 | PBD | 30A | Power back door system |
| 10 | ST | 30A | Starter system |
| 11 | PD | 50A | Daytime running light system, A/F, H-LP RH HI, H-LP LH LO, H-LP RH LO, H-LP LH HI, HORN, S-HORN, multiplex communication system, multiport fuel injection system/ sequential multiport fuel injection system |
| 12 | ABS NO.1 | 50A | Anti-lock brake system |
| 13 | EPS | 60A | Electric power steering system |
| 14 | ALT | 140A | FUEL OPN, DR LOCK, OBD, RR FOG, S/ROOF, 4WD, INVERTER, ECU IG1 NO.1, ECU IG1 NO.2, PANEL, GAUGE NO.1 |
| 15 | AMP1 | 30A | Audio system |
| 16 | EFI MAIN | 30A | Multiport fuel injection system/ sequential multiport fuel injection system, EFI NO.1, EFI NO.2 |
| 17 | AMP2 | 30A | Audio system |
| 18 | IG2 | 30A | Starter system, IGN, GAUGE NO.2, ECU IG2 |
| 19 | IP JB | 25A | Power door lock system |
| 20 | STR LOCK | 20A | Starter system |
| 21 | RAD NO.3 | 15A | Meters and gauges lights, instrument panel lights, navigation system, audio system, rear seat entertainment system |
| 22 | HAZ | 15A | Emergency flashers |
| 23 | ETCS | 10A | Multiport fuel injection system/ sequential multiport fuel injection system |
| 24 | RAD NO.1 | 10A | Audio system |
| 25 | AM2 | 7.5A | Starting system |
| 26 | ECU-B NO.2 | 7.5A | Air conditioning system, front passenger occupant classification system, starter system |
| 27 | MAYDAY/TEL | 7.5A | Mayday system |
| 28 | IMMOBI | 7.5A | - |
| 29 | ALT-S | 7.5A | Charging system |
| 30 | IGN | 10A | Starter system, multiport fuel injection system/sequential multiport fuel injection system |
| 31 | DOME | 10A | Vanity mirror lights, luggage compartment lights, interior lights, personal lights |
| 32 | ECU-B NO.1 | 7.5A | Interior lights, personal lights, tilt and telescopic steering, multiplex communication system, meters and gauges, power window, driving position memory system, power seats, power back door, head-up display, starter system, air conditioning system, power door lock system |
| 33 | EFI NO.1 | 10A | Multiport fuel injection system/ sequential multiport fuel injection system |
| 34 | WIP-S | 7.5A | Windshield wipers and washer |
| 35 | AFS | 7.5A | Adaptive front-lighting system |
| 36 | BK/UP LP | 7.5A | Back-up lights |
| 37 | HEATER NO.2 | 7.5A | Air conditioning system, AWD system |
| 38 | ECU IG1 | 10A | Adaptive front-lighting system, headlight cleaner, cooling fan, cruise control, vehicle stability control, vehicle dynamics integrated management |
| 39 | EFI NO.2 | 10A | Multiport fuel injection system/ sequential multiport fuel injection system |
| 40 | F/PUMP | 15A | Multiport fuel injection system/ sequential multiport fuel injection system |
| 41 | DEICER | 25A | Windshield wipers and washer |
| 42 | STOP | 7.5A | Vehicle stability control, vehicle dynamics integrated management, high mounted stoplight |
| 43 | TOWING BATT | 20A | Trailer battery |
| 44 | TOWING | 30A | Trailer lights |
| 45 | FILTER | 10A | Condenser |
| 46 | IG1 MAIN | 30A | ECU IG1, BK/UP LP, HEATER NO.2, AFS |
| 47 | H-LP RH HI | 15A | Right-hand headlight (high beam) |
| 48 | H-LP LH HI | 15A | Left-hand headlight (high beam) |
| 49 | BIXENON | 10A | Discharge headlight |
| 50 | H-LP RH LO | 15A | Right-hand headlight (low beam) |
| 51 | H-LP LH LO | 15A | Left-hand headlight (low beam) |
| 52 | HORN | 10A | Horn |
| 53 | A/F | 20A | Multiport fuel injection system/ sequential multiport fuel injection system |
| 54 | S-HORN | 7.5A | Security horn |
Instrument Panel Fuse Box
| № | Fuse | A | Circuit |
|---|---|---|---|
| 1 | P/POINT | 15A | Power outlet |
| 2 | ECU-ACC | 10A | Navigation system, outside rear view mirror, multiplex communication system, multi-information display, head-up display |
| 3 | CIG | 15A | Power outlet |
| 4 | RADIO NO.2 | 7.5A | Audio system, power outlet |
| 5 | GAUGE NO.1 | 10A | Emergency flashers, navigation system, head-up display |
| 6 | ECU-IG1 NO.3 | 10A | Outside rear view mirror, windshield wipers and washer, seat heaters, starter system, power outlet, moon roof, Automatic High Beam |
| 7 | ECU-IG1 NO.1 | 10A | Multiplex communication system, electric power steering system, shift lock control system, tilt and telescopic steering, starter system, automatic transmission system, power back door, tire pressure warning system |
| 8 | S/ROOF | 30A | Moon roof |
| 9 | FUEL OPN | 7.5A | Fuel filler door opener |
| 10 | PSB | 30A | Pre-collision seat belt |
| 11 | TI&TE | 30A | Tilt and telescopic steering system |
| 12 | DR LOCK | 10A | Power door lock system |
| 13 | FR FOG | 15A | Front fog lights |
| 14 | P-SEAT LH | 30A | Power seat (left-side) |
| 15 | 4WD | 7.5A | AWD system |
| 16 | INVERTER | 20A | - |
| 17 | RR FOG | 7.5A | - |
| 18 | D/L ALT B | 25A | Multiplex communication system |
| 19 | HEATER | 10A | Air conditioning system |
| 20 | ECU-IG1 NO.2 | 10A | Air conditioning system, multiport fuel injection system/sequential multiport fuel injection system, SRS airbag system, multi-information display |
| 21 | PANEL | 10A | Switch illumination, navigation system, headlight cleaner, windshield wiper de-icer, seat heater, power back door, audio system, multi-information display, air conditioning system |
| 22 | TAIL | 10A | Parking lights, side marker lights, tail lights, license plate lights, front fog lights, towing converter |
| 23 | AIR SUS | 20A | - |
| 24 | P-SEAT RH | 30A | Power seat (right-side) |
| 25 | OBD | 7.5A | On-Board diagnosis |
| 26 | FR DOOR | 25A | Front power window (right-side) |
| 27 | RR DOOR | 25A | Rear power window (right-side) |
| 28 | FL DOOR | 25A | Front power window (left-side) |
| 29 | RL DOOR | 25A | Rear power window (left-side) |
| 30 | FR WASH | 25A | Windshield wipers and washer |
| 31 | RR WIP | 15A | Windshield wipers and washer |
| 32 | RR WASH | 20A | Windshield wipers and washer |
| 33 | FR WIP | 30A | Windshield wipers and washer |
| 34 | ECU IG2 | 10A | Starter system, Intuitive parking assist, AWD system |
| 35 | GAUGE NO.2 | 7.5A | Starter system |
| 36 | RH S-HTR | 15A | Seat heater (right-side) |
| 37 | LH S-HTR | 15A | Seat heater (left-side) |