2010 Lexus IS Fuse Box Diagram
The 4 fuse boxes on the 2010 Lexus IS, 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 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 isUnder the hood in the engine bay. Page 443 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 443 of your owner's manual.
Where it isInside the car, under or behind the dashboard, driver's side. Page 445 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 445 of your owner's manual.
Where it isInside the car, under or behind the dashboard, passenger side. Page 447 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 447 of your owner's manual.
2010 IS engine bay (type a) fuses
Engine compartment (type A fuse box). Tap a row to find it on the diagram.
| No. | Amps | Type | Protects |
|---|---|---|---|
| 1 | 25A | Fuse (size not listed) | PWR HTR |
| 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 |
| 5 | 20A | Fuse (size not listed) | D/C CUT: DOME, MPX-B |
| 6 | 30A | Fuse (size not listed) | RAD NO.1: Audio |
| 7 | 10A | Fuse (size not listed) | MPX-B: Headlights, front fog lights, parking lights, license plate lights, windshield washer, horn, power door lock system, power windows, power seats, electric tilt and telescopic steering column, meter, smart access system with pushbutton start, outside rear view mirrors, air conditioning system, multiplex communication system |
| 8 | 10A | Fuse (size not listed) | DOME: Interior lights, meter |
| 9 | 10A | Fuse (size not listed) | CDS: Electric cooling fans |
| 10 | 60A | Fuse (size not listed) | E/G-B: FR CTRL-B, ETCS, ALT-S, steering lock system, exhaust system |
| 11 | 80A | Fuse (size not listed) | DIESEL GLW |
| 12 | 50A | Fuse (size not listed) | ABS1: VDIM |
| 13 | 30A | Fuse (size not listed) | RH J/B-B: Power door lock system, smart access system with push-button start |
| 14 | 30A | Fuse (size not listed) | MAIN: Headlight low beams |
| 15 | 30A | Fuse (size not listed) | STARTER: Smart access system with push-button start |
| 16 | 30A | Fuse (size not listed) | LH J/B-B: Power door lock system, SECURITY |
| 17 | 60A | Fuse (size not listed) | P/I-B: Multiport fuel injection system/ sequential multiport fuel injection system |
| 18 | 80A | Fuse (size not listed) | EPS: Power steering |
| 19 | 150A | Fuse (size not listed) | ALT: LH J/B-AM, E/G-AM, GLW PLG2, HEATER, FAN1, FAN2, DEFOG, ABS2, RH J/B-AM, GLW PLG1, LH J/B-B, RH J/B-B |
| 20 | 50A | Fuse (size not listed) | GLW PLG1: PTC heater |
| 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: 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: Air conditioning system 441 |
| 27 | 50A | Fuse (size not listed) | GLW PLG2: PTC heater |
| 28 | 60A | Fuse (size not listed) | E/G-AM: Headlight cleaners, front fog lights, parking lights, air conditioning system DEICER |
| 29 | 80A | Fuse (size not listed) | LH J/B-AM: S/ROOF, FR P/SEAT LH, TV NO.1, A/C, FUEL/OPEN, PSB, FR WIP, H-LP LVL, LH-IG, ECU-IG LH, PANEL, TAIL, MIR HTR, FR S/HTR LH |
2010 IS engine bay (type b) fuses
Engine compartment (type B fuse box). 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: Headlight high beams, horn |
| 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 | 7.5A | Fuse (size not listed) | ALT-S: Charging system |
| 8 | 10A | Fuse (size not listed) | TEL: Lexus Enform |
| 9 | 25A | Fuse (size not listed) | STR LOCK: Steering lock |
| 10 | 30A | Fuse (size not listed) | H-LP CLN: Headlight cleaner |
| 11 | 7.5A | Fuse (size not listed) | A/C COMP: Air conditioning system |
| 12 | 25A | Fuse (size not listed) | DEICER: Windshield wiper de-icer |
| 13 | 30A | Fuse (size not listed) | FR CTRL-AM: Front fog lights, parking lights, windshield washer |
| 14 | 10A | Fuse (size not listed) | IG2: Ignition system |
| 15 | 10A | Fuse (size not listed) | EFI NO.2: Fuel system, exhaust system |
| 16 | 15A | Fuse (size not listed) | H-LP R LWR: Headlight low beam (right) |
| 17 | 15A | Fuse (size not listed) | H-LP L LWR: Headlight low beam (left) |
| 18 | 25A | Fuse (size not listed) | F/PMP: Fuel system |
| 19 | 25A | Fuse (size not listed) | EFI: Multiport fuel injection system/ sequential multiport fuel injection system |
| 20 | 20A | Fuse (size not listed) | INJ: Multiport fuel injection system/ sequential multiport fuel injection system |
| 21 | 15A | Fuse (size not listed) | H-LP UPR: Headlight high beams |
| 22 | 10A | Fuse (size not listed) | HORN: Horns |
| 23 | 20A | Fuse (size not listed) | WASHER: Windshield washer |
| 24 | 10A | Fuse (size not listed) | FR TAIL: Parking lights |
| 25 | 15A | Fuse (size not listed) | FR FOG: Front fog lights |
2010 IS 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, parking lights |
| 10 | 7.5A | Fuse (size not listed) | PANEL: Switch illumination, air conditioning system, display |
| 11 | 7.5A | Fuse (size not listed) | RR FOG |
| 12 | 10A | Fuse (size not listed) | ECU-IG LH: Cruise control, air conditioning system, power steering, rain sensor, antiglare inside rear view mirror, shift lock system, moon roof, tire inflation pressure warning system |
| 13 | 15A | Fuse (size not listed) | FR S/HTR LH: Seat heaters and ventilators |
| 14 | 20A | Fuse (size not listed) | RR DOOR LH: Power windows |
| 15 | 20A | Fuse (size not listed) | FR DOOR LH: Power windows |
| 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: AFS |
| 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, mirror heaters, sun shade, seat belts, intuitive parking assist, cruise control, air conditioning system, PTC heater |
| 19 | 30A | Fuse (size not listed) | FR WIP: Windshield wipers |
2010 IS 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 |
| 5 | 20A | Fuse (size not listed) | & TE: Electric tilt and telescopic steering column |
| 6 | 10A | Fuse (size not listed) | RAD NO.3: Audio |
| 7 | 7.5A | Fuse (size not listed) | GAUGE: Meter |
| 8 | 10A | Fuse (size not listed) | IGN: SRS airbag system, cruise control, steering lock system, fuel system |
| 9 | 7.5A | Fuse (size not listed) | ACC: Lexus link system, clock, air conditioning system, audio, display, outside rear view mirrors, smart access system with push-button start |
| 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 heater and ventilator |
| 16 | 15A | Fuse (size not listed) | FR S/HTR RH: Seat heaters and ventilators |
| 17 | 10A | Fuse (size not listed) | ECU-IG RH: Power seats, smart access system with push-button start, AWD system, outside rear view mirrors, VDIM, air conditioning system, pre-collision seat belt, electric tilt and telescopic steering, power windows, navigation system |
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: 2010 Lexus IS Owner's Manual, "Fuses" section, p. 440 and 443 and 445 and 447.
Always replace a fuse with one of the same amp rating. If a new fuse blows straight away, the circuit has a fault.