Fuse Box Diagrams

2010 Lexus SC Fuse Box Diagram

The 4 fuse boxes on the 2010 Lexus SC, with every fuse and relay. Tap a fuse to see what it protects, or search for the thing that stopped working.

Year2010All years

Where it isUnder the hood in the engine bay. Page 265 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 265 of your owner's manual.

ENGINE COMPARTMENT FUSE BOX · SLOT MAP, NOT TO SCALE120A225A325A415A515A615A710A830A95A1025A1115A1215A1320A147.5A1510A165A1710A

2010 SC engine bay fuses

Engine compartment fuse box. Tap a row to find it on the diagram.

No.AmpsTypeProtects
120AFuse (size not listed)IG2 MAIN: Multiport fuel injection system/sequential multiport fuel injection system
225AFuse (size not listed)P-DOOR: Power windows, Power door lock system, Power rear view mirror control system, Outside rear view mirror defogger, Door courtesy lights
325AFuse (size not listed)D-DOOR: Power windows, Power door lock system, Power rear view mirror control system, Outside rear view mirror defogger, Door courtesy lights
415AFuse (size not listed)D/C CUT: All components “DOME”, “MPX-B1”, “MPX-B2” and “MPX-B3” fuses
515AFuse (size not listed)TURN-HAZ: Turn signal lights, Emergency flashers
615AFuse (size not listed)ETCS: Multiport fuel injection system/sequential multiport fuel injection system
710AFuse (size not listed)HORN: Horn, Headlight switch
830AFuse (size not listed)RADIO NO.1: Audio system
95AFuse (size not listed)ALT-S: Charging system
1025AFuse (size not listed)EFI: Multiport fuel injection system/sequential multiport fuel injection system
1115AFuse (size not listed)H-LP R LWR: Right-hand headlight (low beam)
1215AFuse (size not listed)H-LP L LWR: Left-hand headlight (low beam)
1320AFuse (size not listed)H-LP UPR: Headlight (high beam), Headlight switch
147.5AFuse (size not listed)STARTER: Starting system
1510AFuse (size not listed)EFI NO.2: Multiport fuel injection system/sequential multiport fuel injection system, Emission control system
165AFuse (size not listed)IGN: Multiport fuel injection system/sequential multiport fuel injection system, Anti-lock brake system, Traction control system, Vehicle stability control system, Cruise control system
1710AFuse (size not listed)INJ: Multiport fuel injection system/sequential multiport fuel injection system

2010 SC driver's side panel fuses

Fuse box in the driver’s side kick panel. Tap a row to find it on the diagram.

No.AmpsTypeProtects
115AFuse (size not listed)& TE: Tilt and telescopic steering
25AFuse (size not listed)PANEL: Air conditioning system, Audio system, Glove box light, Trip-information display, Cigarette lighter, Electronic throttle control system
315AFuse (size not listed)FR FOG: Fog lights, Headlight switch
430AFuse (size not listed)D P/SEAT: Power seat system
510AFuse (size not listed)D-IG: Gauges and meters, Headlight cleaner, Charging system, Seat belt pretensioner system
67.5AFuse (size not listed)MPX-IG: Tilt and telescopic steering, Power door lock system, SRS, Power seat system
730AFuse (size not listed)WIPER: Windshield wiper
815AFuse (size not listed)PWR OUTLET: Power outlet
97.5AFuse (size not listed)OBD: On-board diagnosis system
105AFuse (size not listed)AM1: Power source
117.5AFuse (size not listed)ABS-IG: Vehicle stability control system
127.5AFuse (size not listed)SECURITY: Multiport fuel injection system/sequential multiport fuel injection system.
137.5AFuse (size not listed)TAIL: Tail lights, Side marker lights, Parking lights, Headlight switch
145AFuse (size not listed)STOP: Stop lights
1510AFuse (size not listed)HEATER: Air conditioning system

2010 SC passenger side panel fuses

Fuse box in the front passenger’s side kick panel. Tap a row to find it on the diagram.

No.AmpsTypeProtects
17.5AFuse (size not listed)IG2: SRS
27.5AFuse (size not listed)MPX-B1: Power door lock, Steering lock, Power seat system, Retractable hardtop
37.5AFuse (size not listed)MPX-B3: Tilt and telescopic steering, Headlight switch, Windshield wiper and washer switch, Turn signal switch
47.5AFuse (size not listed)DOME: Interior light, Personal lights, Vanity lights, Foot lights, engine switch light, Trunk light, Antenna, Garage door opener system, Audio system
57.5AFuse (size not listed)MPX-B2: Gauges and meters, Vehicle stability control system, tire pressure warning system
610AFuse (size not listed)H-LP LVL: Headlight leveling system
710AFuse (size not listed)P-IG: Shift lock system, Seat heater, Trip-information display, Antenna, Inside rear view mirror
820AFuse (size not listed)SEAT HTR: Seat heater
910AFuse (size not listed)RADIO NO.2: Audio system, Trip-information display, Seat belt warning light, Shift lock system
1015AFuse (size not listed)CIG: Cigarette lighter
1120AFuse (size not listed)WASHER: Windshield washer
125AFuse (size not listed)A/C: Air conditioning system
1330AFuse (size not listed)P P/SEAT: Power seat system
145AFuse (size not listed)TV: TV, Navigation system

2010 SC cargo area fuses

Fuse box in the trunk. Tap a row to find it on the diagram.

No.AmpsTypeProtects
17.5AFuse (size not listed)LCE LP: License plate lights
220AFuse (size not listed)ROOF RH: Retractable hardtop lock system
310AFuse (size not listed)FUEL OPN: Fuel filler door opener
420AFuse (size not listed)ROOF LH: Retractable hardtop lock system
520AFuse (size not listed)P-TRAY: Quarter windows
620AFuse (size not listed)LGG LH: Luggage lock system
720AFuse (size not listed)LGG RH: Luggage lock 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 SC Owner's Manual, "Fuses" section, p. 265 and 267 and 269 and 270.

Always replace a fuse with one of the same amp rating. If a new fuse blows straight away, the circuit has a fault.