2012 Lexus IS F Fuse Box Diagram
The 4 fuse boxes on the 2012 Lexus IS F, with every fuse and relay. Tap a fuse to see what it protects, or search for the thing that stopped working.
Where it isUnder the hood in the engine bay. Page 435 of the owner's manual shows the exact spot.
Slot map: the fuses are listed in the manual's order, not where they sit in the box. Match the numbers to the label inside the box cover, or the drawing on page 435 of your owner's manual.
Where it isUnder the hood in the engine bay. Page 438 of the owner's manual shows the exact spot.
Slot map: the fuses are listed in the manual's order, not where they sit in the box. Match the numbers to the label inside the box cover, or the drawing on page 438 of your owner's manual.
Where it isInside the car, under or behind the dashboard, driver's side. Page 440 of the owner's manual shows the exact spot.
Slot map: the fuses are listed in the manual's order, not where they sit in the box. Match the numbers to the label inside the box cover, or the drawing on page 440 of your owner's manual.
Where it isInside the car, under or behind the dashboard, passenger side. Page 442 of the owner's manual shows the exact spot.
Slot map: the fuses are listed in the manual's order, not where they sit in the box. Match the numbers to the label inside the box cover, or the drawing on page 442 of your owner's manual.
2012 IS F engine bay (type a) fuses
Engine compartment (type A). Tap a row to find it on the diagram.
| No. | Amps | Type | Protects |
|---|---|---|---|
| 1 | 7.5A | Fuse (size not listed) | ALT-S: Charging system |
| 2 | 15A | Fuse (size not listed) | TURN-HAZ: Emergency flashers, turn signals |
| 3 | 20A | Fuse (size not listed) | IG2 MAIN: IG2, IGN, GAUGE |
| 4 | 30A | Fuse (size not listed) | RAD NO. 2: Audio system |
| 5 | 20A | Fuse (size not listed) | D/C CUT: DOME, MPX-B |
| 6 | 30A | Fuse (size not listed) | RAD NO. 1: Audio system |
| 7 | 10A | Fuse (size not listed) | MPX-B: Headlights, front fog lights, parking lights, windshield washer, horns, power door lock system, power windows, power seats, electric tilt and telescopic steering column, meters and gauges, smart access system with push-button start, outside rear view mirrors, air conditioning system |
| 8 | 10A | Fuse (size not listed) | DOME: Interior lights, meters and gauges, front footwell lights |
| 9 | 10A | Fuse (size not listed) | CDS: Electric cooling fans |
| 10 | 60A | Fuse (size not listed) | E/G-B: FR CTRL-B, ETCS, A/F, STR LOCK, INJ2, TEL |
| 12 | 60A | Fuse (size not listed) | 11 P/I-B ABS 1: EFI, F/PMP, INJ VDIMOnly on: some versions (check the rating on the old fuse) |
| 12 | 50A | Fuse (size not listed) | 11 P/I-B ABS 1: EFI, F/PMP, INJ VDIMOnly on: some versions (check the rating on the old fuse) |
| 13 | 30A | Fuse (size not listed) | RH J/B-B: FR DOOR RH, RR DOOR RH, AM2 |
| 14 | 40A | Fuse (size not listed) | VVT: Multiport fuel injection system/ sequential multiport fuel injection system |
| 15 | 30A | Fuse (size not listed) | MAIN: H-LP R LWR, H-LP L LWR, headlight low beams |
| 16 | 30A | Fuse (size not listed) | STARTER: Smart access system with push-button start |
| 18 | 30A | Fuse (size not listed) | 17 LH J/B-B EPS: FR DOOR LH, RR DOOR LH, SECURITY Electric power steeringOnly on: some versions (check the rating on the old fuse) |
| 18 | 80A | Fuse (size not listed) | 17 LH J/B-B EPS: FR DOOR LH, RR DOOR LH, SECURITY Electric power steeringOnly on: some versions (check the rating on the old fuse) |
| 19 | 180A | Fuse (size not listed) | ALT: LH J/B-AM, E/G-AM, HEATER, FAN1, FAN2, DEFOG, RH J/B-AM, ABS 2 |
| 20 | 80A | Fuse (size not listed) | LH J/B-AM: S/ROOF, FR P/SEAT LH, TV NO.1, A/C, F/OPN, PSB, FR WIP, H-LP LVL, LH-IG, ECU-IG LH, PANEL, TAIL, MIR HTR, TV NO. 2, FR S/HTR LH |
| 21 | 80A | Fuse (size not listed) | RH J/B-AM: OBD, STOP SW, TI&TE, FR P/SEAT RH, RAD NO. 3, ECU-IG RH, RH-IG, FR S/HTR RH, ACC, CIG, PWR OUTLET |
| 22 | 30A | Fuse (size not listed) | ABS2: VDIM |
| 23 | 50A | Fuse (size not listed) | DEFOG 436: Rear window defogger |
| 24 | 40A | Fuse (size not listed) | FAN2: Electric cooling fans |
| 25 | 40A | Fuse (size not listed) | FAN1: Electric cooling fans |
| 26 | 50A | Fuse (size not listed) | HEATER: CDS, air conditioning system |
| 27 | 60A | Fuse (size not listed) | E/G-AM: H-LP CLN, FR CTRL AM, DEICER |
2012 IS F engine bay (type b) fuses
Engine compartment (type B). Tap a row to find it on the diagram.
| No. | Amps | Type | Protects |
|---|---|---|---|
| 1 | 30A | Fuse (size not listed) | SPARE: Spare fuse |
| 2 | 25A | Fuse (size not listed) | SPARE: Spare fuse |
| 3 | 10A | Fuse (size not listed) | SPARE: Spare fuse |
| 4 | 25A | Fuse (size not listed) | FR CTRL-B: HORN, H-LP HI |
| 5 | 15A | Fuse (size not listed) | A/F: Exhaust system |
| 6 | 10A | Fuse (size not listed) | ETCS: Multiport fuel injection system/ sequential multiport fuel injection system |
| 7 | 10A | Fuse (size not listed) | TEL: TEL |
| 8 | 25A | Fuse (size not listed) | INJ2: Multiport fuel injection system/ sequential multiport fuel injection system |
| 9 | 25A | Fuse (size not listed) | STR LOCK: Steering lock system |
| 10 | 30A | Fuse (size not listed) | H-LP CLN: Headlight cleaner |
| 11 | 25A | Fuse (size not listed) | DEICER: Windshield wiper de-icer |
| 12 | 30A | Fuse (size not listed) | FR CTRL-AM: FR FOG, WASHER, FR TAIL |
| 13 | 10A | Fuse (size not listed) | IG2: Ignition system |
| 14 | 10A | Fuse (size not listed) | EFI NO. 2: Fuel system, exhaust system, multiport fuel injection system/sequential multiport fuel injection system |
| 15 | 15A | Fuse (size not listed) | H-LP R LWR: Headlight low beam (right) |
| 16 | 15A | Fuse (size not listed) | H-LP L LWR: Headlight low beam (left) |
| 17 | 25A | Fuse (size not listed) | F/PMP: Fuel system |
| 18 | 25A | Fuse (size not listed) | EFI: Multiport fuel injection system/ sequential multiport fuel injection system, EFI NO. 2 |
| 19 | 25A | Fuse (size not listed) | INJ: Multiport fuel injection system/ sequential multiport fuel injection system |
| 20 | 20A | Fuse (size not listed) | H-LP UPR: Headlight high beams |
| 21 | 10A | Fuse (size not listed) | HORN: Horns |
| 22 | 20A | Fuse (size not listed) | WASHER: Windshield washer |
| 23 | 10A | Fuse (size not listed) | FR TAIL: Parking lights, side marker lights |
| 24 | 15A | Fuse (size not listed) | FR FOG: Front fog lights |
2012 IS F driver's side panel fuses
Driver’s side instrument panel. Tap a row to find it on the diagram.
| No. | Amps | Type | Protects |
|---|---|---|---|
| 1 | 30A | Fuse (size not listed) | FR P/SEAT LH: Power seat |
| 2 | 7.5A | Fuse (size not listed) | A/C: Air conditioning system |
| 3 | 15A | Fuse (size not listed) | MIR HTR: Outside rear view mirror defoggers |
| 4 | 10A | Fuse (size not listed) | TV NO. 1: Display |
| 5 | 10A | Fuse (size not listed) | FUEL OPEN: Fuel filler door opener |
| 6 | 7.5A | Fuse (size not listed) | TV NO. 2 |
| 7 | 30A | Fuse (size not listed) | PSB: Pre-collision seat belt |
| 8 | 25A | Fuse (size not listed) | S/ROOF: Moon roof |
| 9 | 10A | Fuse (size not listed) | TAIL: Tail lights, license plate lights, rear side marker lights |
| 10 | 7.5A | Fuse (size not listed) | PANEL: Switch illumination, air conditioning system, display, cigarette lighter illumination, shift lever light, instrument panel lights |
| 11 | 7.5A | Fuse (size not listed) | RR FOG |
| 12 | 10A | Fuse (size not listed) | ECU-IG LH: Cruise control, air conditioning system, electric power steering, shift lock system, moon roof, tire inflation pressure warning system |
| 13 | 15A | Fuse (size not listed) | FR S/HTR LH: Seat heaters |
| 14 | 20A | Fuse (size not listed) | RR DOOR LH: Power windows |
| 15 | 20A | Fuse (size not listed) | FR DOOR LH: Power windows, outside rear view mirror (left) |
| 16 | 7.5A | Fuse (size not listed) | SECURITY: Smart access system with push-button start |
| 17 | 7.5A | Fuse (size not listed) | H-LP LVL: Automatic headlight leveling system |
| 18 | 10A | Fuse (size not listed) | LH-IG: Charging system, headlight cleaner, rear window defogger, electric cooling fans, emergency flashers, turn signal lights, back-up lights, stop lights, outside rear view mirror defoggers, seat belts, intuitive parking assist, air conditioning system |
| 19 | 30A | Fuse (size not listed) | FR WIP: Windshield wipers |
2012 IS F passenger side panel fuses
Passenger’s side instrument panel. Tap a row to find it on the diagram.
| No. | Amps | Type | Protects |
|---|---|---|---|
| 1 | 30A | Fuse (size not listed) | FR P/SEAT RH: Power seat |
| 2 | 15A | Fuse (size not listed) | DOOR DL |
| 3 | 7.5A | Fuse (size not listed) | OBD: On-board diagnosis system |
| 4 | 7.5A | Fuse (size not listed) | STOP SW: Stop lights, VDIM, shift lock system, multiport fuel injection system/ sequential multiport fuel injection system, smart access system with pushbutton start |
| 5 | 20A | Fuse (size not listed) | & TE: Electric tilt and telescopic steering column |
| 6 | 10A | Fuse (size not listed) | RAD NO. 3: Audio system |
| 7 | 7.5A | Fuse (size not listed) | GAUGE: Meters and gauges |
| 8 | 10A | Fuse (size not listed) | IGN: SRS airbag system, stop lights, steering lock system, fuel system, front passenger occupant classification system |
| 9 | 7.5A | Fuse (size not listed) | ACC: Clock, air conditioning system, audio system, navigation system, display, outside rear view mirrors, smart access system with push-button start, glove box light, console box light |
| 10 | 15A | Fuse (size not listed) | CIG: Cigarette lighter |
| 11 | 15A | Fuse (size not listed) | PWR OUTLET: Power outlet |
| 12 | 20A | Fuse (size not listed) | RR DOOR RH: Power windows |
| 13 | 20A | Fuse (size not listed) | FR DOOR RH: Power windows, outside rear view mirrors |
| 14 | 7.5A | Fuse (size not listed) | AM2: Smart access system with push-button start |
| 15 | 7.5A | Fuse (size not listed) | RH-IG: Seat belts, intuitive parking assist, automatic transmission, seat heaters, windshield wiper de-icer |
| 16 | 15A | Fuse (size not listed) | FR S/HTR RH: Seat heaters |
| 17 | 10A | Fuse (size not listed) | ECU-IG RH: Power seats, smart access system with push-button start, outside rear view mirrors, VDIM, air conditioning system, pre-collision seat belt, electric tilt and telescopic steering, power windows, navigation system, headlights, front fog lights, parking lights, license plate lights, windshield washer |
Blade fuse colours
- 5A Tan
- 7.5A Brown
- 10A Red
- 15A Blue
- 20A Yellow
- 25A Clear
- 30A Green
- 35A Blue-green
- 40A Orange
Cartridge (J-case) colours
- 20A Blue
- 25A White
- 30A Pink
- 40A Green
- 50A Red
- 60A Yellow
Source: 2012 Lexus IS F Owner's Manual, "Fuses" section, p. 435 and 438 and 440 and 442.
Always replace a fuse with one of the same amp rating. If a new fuse blows straight away, the circuit has a fault.