Table of Contents
The electrical power supply circuits of the vehicle are protected by fuses. These fuses are installed in distribution blocks (fuse boxes) located in the engine compartment and the passenger compartment.
In this guide, we provide detailed fuse box diagrams and terminal assignments for the second-generation Lexus GX 460 (J150 series), covering model years 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, and 2019.
Engine Compartment Fuse Box
Located on the left side of the engine compartment.
Engine compartment fuse box assembly.
| Diagram | ||
|---|---|---|
|
||
| No. | Circuit Protected | Rating (A) |
| 1 | Rear air conditioning system | 40 |
| 2 | - | - |
| 3 | Air suspension system (AIR SUS No. 2) | 50 |
| 4 | AC Inverter | 15 |
| 5 | - | - |
| 6 | Rear window defogger | 30 |
| 7 | - | - |
| 8 | Windshield wiper de-icer | 20 |
| 9 | - | - |
| 10 | - | - |
| 11 | Trailer towing | 30 |
| 12 | - | - |
| 13 | Fuel injectors, ignition system, instrument cluster | 20 |
| 14 | Horn | 10 |
| 15 | EFI ECU, A/F sensor heater relay, fuel pump relay, EFI No. 2 | 25 |
| 16 | A/F sensor | 20 |
| 17 | - | - |
| 18 | Fuel filler door opener | 10 |
| 19 | Rear seat heaters | 20 |
| 20 | Power folding seat (Left) | 30 |
| 21 | Power folding seat (Right) | 30 |
| 22 | Trailer towing | 30 |
| 23 | - | - |
| 24 | Air conditioning system | 10 |
| 25 | Heated steering wheel | 10 |
| 26 | A/C condenser fan | 20 |
| 27 | Stop lights, high-mount stop light, brake light switch, brake light relay, VSC ECU, trailer towing, Smart Access with push-button start | 10 |
| 28 | - | - |
| 29 | Air suspension ECU | 7.5 |
| 30 | High-beam headlamp (Right) | 15 |
| 31 | High-beam headlamp (Left) | 15 |
| 32 | Air conditioning system | 50 |
| 33 | Rear window wiper and washer | 30 |
| 34 | Headlamp cleaners | 30 |
| 35 | - | - |
| 36 | AC inverter | 80 |
| 37 | Starter motor | 30 |
| 38 | Headlamp dimmer relay, headlamps, daytime running lights (DRL) | 25 |
| 39 | Alternator (ALT) | 7.5 |
| 40 | Front turn signals, rear turn signals, side turn signal repeaters, turn signal indicators | 15 |
| 41 | Power door lock motors, power moonroof | 25 |
| 42 | EFI ECU | 10 |
| 43 | Fuel pump controller (FPC) | 15 |
| 44 | - | - |
| 45 | Trailer towing | 30 |
| 46 | Air conditioning, air suspension, headlamp cleaners, trailer towing, power reclining seats, stop lights, rear defogger, mirror heaters, A/C condenser fan, rear fog lights, windshield wiper de-icer, alternator control, A/C magnetic clutch, rear seat heaters, heated steering wheel, junction block, rear wiper, rear washer | 140 |
| 47 | Fuel injectors, ignition system, instrument cluster, EFI system, A/F sensor heater, horn | 80 |
| 48 | - | - |
| 49 | Audio system, navigation system, rear-seat entertainment system | 15 |
| 50 | Starting system | 7.5 |
| 51 | Navigation system | 10 |
| 52 | - | 7.5 |
| 53 | Audio system | 30 |
| 54 | ABS, VSC | 50 |
| 55 | ABS, VSC | 30 |
| 56 | Secondary air injection pump | 50 |
| 57 | Warning buzzer, security siren, double-locking ECU | 10 |
| 58 | Smart Access system with push-button start | 7.5 |
| 59 | Electric steering lock system | 20 |
| 60 | Trailer towing | 30 |
| 61 | Rear window wiper | 15 |
| 62 | Interior lights, personal lights, vanity mirror lights, door courtesy lights, footwell lights, puddle lights, overhead console module | 10 |
| 63 | Body ECU, instrument cluster, heater control, steering angle sensor, wireless remote control, seat position memory system, power tilt/telescopic steering column, multi-information display, Smart Access with push-button start, power folding seat, cool box, DSS ECU #2, steering wheel switches, driver module switch, overhead console module | 10 |
| 64 | DSS ECU #1 | 7.5 |
| 65 | Low-beam headlamp (Right), headlamp leveling system | 15 |
| 66 | Low-beam headlamp (Left), headlamp leveling system | 15 |
| 67 | Ignition coils, fuel injectors, noise filter | 10 |
| 68 | Oxygen sensor, air flow meter (AFM), ACIS VSV, air injection switching valve, key-off pump, EVAP VSV, EGR valve, canister VSV, air injection VSV relay, air injection pump heater relay | 10 |
| 69 | DSS ECU #1 | 7.5 |
| 70 | Rear window washer | 15 |
| 71 | Spare fuse | - |
| 72 | - | |
| 73 | - | |
Passenger Compartment Fuse Box
The passenger compartment fuse box is located on the driver’s side, under the lower instrument panel behind a plastic cover.
Accessing the fuse box panel.
| Passenger Compartment Fuse Box Assignment | ||
|---|---|---|
|
||
| No. | Circuit Protected | Rating (A) |
| 1 | Cigarette lighter / Power outlet | 15 |
| 2 | Power mirror motors, Body ECU, air conditioning system, audio system, navigation system, intuitive parking assist, back-up light relay, DSS ECU #2, automatic transmission shift indicator, EFI ECU, shift-lock ECU, DCM, MAYDAY ECU | 7.5 |
| 3 | Back-up lights, audio system, multi-information display, DSS ECU #2, parking assist sensors | 10 |
| 4 | Trailer towing | 10 |
| 5 | Air suspension system | 20 |
| 6 | KDSS ECU | 10 |
| 7 | 4WD system, rear differential lock | 20 |
| 8 | Power front seat (Left) | 30 |
| 9 | Double locking system, power moonroof, Body ECU | 25 |
| 10 | - | - |
| 11 | Pre-Crash Seatbelt (PSB) ECU | 30 |
| 12 | Power tilt and telescopic steering | 15 |
| 13 | Front fog lights | 15 |
| 14 | ||
| 15 | Data Link Connector 3 (DLC3 / OBD-II) | 7.5 |
| 16 | Air conditioning system | 7.5 |
| 17 | Starting system | 7.5 |
| 18 | Rear power window (Left) | 25 |
| 19 | - | - |
| 20 | Shift-lock ECU, VSC ECU, ABS ECU, steering angle sensor, yaw rate sensor, sequential shift switch, wiper ECU, back-up light relay, power tilt/telescopic steering, PSB ECU, DSS ECU #1, radar cruise control sensor, AFS ECU, tire pressure warning ECU, driver unit | 10 |
| 21 | Front turn signals, rear turn signals, side turn signals, instrument cluster turn indicators, trailer lights, alternator, VSC system, cruise control switch, stop light relay, magnetic clutch relay, A/C condenser fan relay | 7.5 |
| 22 | Rear window defogger, outer mirror memory, seat heater/ventilation switches, inverter relay, air conditioning system, electrochromic (auto-dimming) mirror, Body ECU, exhaust sensor, parking assist sensors, navigation system, DSS ECU #2, meter switch, auxiliary meter, power folding seat ECU, overhead console ignition feed, headlamp cleaners, rear air conditioning, windshield defroster, 4.2-inch multi-information display, driver module, rain sensor, air suspension, rear valve ECU, heated steering wheel, Lane Keeping Assist (LKA), power seat indicator | 10 |
| 23 | - | - |
| 24 | Seat heaters and climate control seats (fans) | 20 |
| 25 | Power front seat (Right) | 30 |
| 26 | Front power window (Passenger side), outer mirror memory | 30 |
| 27 | Power windows | 10 |
| 28 | Front power window (Driver's side) | 25 |
| 29 | Rear power window (Right) | 25 |
| 30 | - | - |
| 31 | Power moonroof | 25 |
| 32 | Windshield wipers and washer | 30 |
| 33 | Windshield wipers and washer | 20 |
| 34 | - | - |
| 35 | Cooling fan | 10 |
| 36 | EFI ECU, circuit opening relay (C/OPN RLY), VSC ECU, airbag ECU, Smart Access with push-button start system, steering lock ECU, CAN gateway ECU | 10 |
| 37 | Instrument cluster / Gauges | 7.5 |
| 38 | Hazard warning switch, seat heater switch, 4WD switch, center differential lock switch, rear differential lock switch, air suspension switch, VSC switch, interior light switch, glove box light, shift lever indicator light, audio system, navigation system, steering wheel switches, parking assist switch, headlamp leveling switch, headlamp washer switch, power seat folding switch, outer mirror switch, ODO/TRIP switch, power seat indicator, shift indicator, cool box, multi-information display, air conditioning system, cup holder illumination, auxiliary switch illumination | 7.5 |
| 39 | Front parking lights, tail lights, license plate lights, EFI ECU, rear fog lights, trailer towing, front fog lights | 10 |