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Fuse box diagram (fuse layout), location, and assignment of fuses and relays Lexus SC 430 (Z40) (2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010).
Checking and Replacing Fuses
The fuses are designed to blow, protecting the wiring harness and electrical systems from damage. If any of the electrical components do not operate, a fuse may have melted. If this happens, check and replace the fuses as necessary. Look carefully at the fuse. If the thin wire inside is broken, the fuse has blown. If you are not sure or if it is too dark to see, try replacing the suspected fuse with one of the same value that you know is good.
In case if you do not have a spare fuse, in an emergency you can pull out fuses, which may be dispensable for normal driving (for example, audio system, cigarette lighter, OBD, seat heater, and the like), and use it if its amperage rating is the same. If you cannot use one of the same amperage, use one lower than, but as close as possible to, the amperage. If the amperage is lower than that specified, the fuse might blow out again but this does not indicate anything wrong. Be sure to get the correct fuse as soon as possible and return the substitute to its original clips.
Notice
- Always switch off the ignition system and the affected electrical circuit before replacing a fuse.
- Never use a fuse of a higher amperage rating than that indicated, or use any other object in place of a fuse, even as a temporary fix. This can cause extensive damage or even fire.
- If the replaced fuse blows again, have the vehicle inspected by any authorized Lexus dealer or repairer, or another duly qualified and equipped professional.
Fuse box locations
- Engine compartment (left/ right)
- Passenger’s side kick panel
- Driver’s side kick panel
- Trunk
Passenger Compartment Fuse Box №1 (Driver’s side)
Pull the knob and remove the lid.
| № | Fuse | A | Description |
|---|---|---|---|
| 1 | Tl & TE | 15 | Tilt and telescopic steering |
| 2 | PANEL | 5 | Air conditioning system, Audio system, Glove box light, Trip-information display, Cigarette lighter, Electronic throttle control system |
| 3 | FR FOG | 15 | Fog lights, Headlight switch |
| 4 | D P/SEAT | 30 | Power seat system |
| 5 | D-IG | 10 | Gauges and meters, Headlight cleaner, Charging system, Seat belt pretensioner system |
| 6 | MPX-IG | 7.5 | Tilt and telescopic steering, Power door lock system, SRS, Power seat system |
| 7 | WIPER | 30 | Windshield wiper |
| 8 | PWR OUTLET | 15 | Power outlet |
| 9 | OBD | 7.5 | On-board diagnosis system |
| 10 | AM1 | 5 | Power source |
| 11 | ABS-IG | 7.5 | 2001-2005: Vehicle skid control system |
| 2005-2010: Vehicle stability control system | |||
| 12 | SECURITY | 7.5 | 2001-2005: Theft deterrent system |
| 2005-2010: Multiport fuel injection system/sequential multiport fuel injection system | |||
| 13 | TAIL | 7.5 | Tail lights, Side marker lights, Parking lights, Headlight switch |
| 14 | STOP | 5 | Stop lights |
| 15 | HEATER | 10 | Air conditioning system |
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Passenger Compartment Fuse Box №2 (Passenger’s side)
Pull the knob and remove the lid.
| № | Fuse | A | Description |
|---|---|---|---|
| 16 | IG2 | 7.5 | SRS |
| 17 | MPX-B1 | 7.5 | Power door lock, Steering lock, Power seat system, Retractable hardtop, Engine immobiliser |
| 18 | MPX-B3 | 7.5 | Tilt and telescopic steering, Headlight switch, Windshield wiper and washer switch, Turn signal switch |
| 19 | DOME | 7.5 | Interior light, Personal lights, Vanity lights, Foot lights, engine switch light, Trunk light, Antenna, Garage door opener system, Audio system |
| 20 | MPX-B2 | 7.5 | Gauges and meters, Vehicle skid control system, Tire pressure warning system |
| 21 | H-LP LVL | 5 | 2001-2005: Headlight leveling system |
| H-LP LVL | 10 | 2005-2010: Headlight leveling system | |
| 22 | P-IG | 10 | Shift lock system, Seat heater, Trip-information display, Antenna, Inside rear view mirror, Theft deterrent system |
| 23 | SEAT HTR | 20 | Seat heater |
| 24 | RADIO №2 | 10 | Audio system, Trip-information display, Seat belt warning light, Shift lock system |
| 25 | CIG | 15 | Cigarette lighter |
| 26 | WASHER | 20 | Windshield washer |
| 27 | A/C | 5 | Air conditioning system |
| 28 | PP/SEAT | 30 | Power seat system |
| 29 | TV | 5 | TV, Navigation system |
Engine Compartment Fuse Box №1 (Right)
Push the tabs in and lift the lid off.
| № | Fuse | A | Description |
|---|---|---|---|
| 38 | IG2 | 20 | Multiport fuel injection system/sequential multiport fuel injection system |
| 39 | MAIN | 50 | Headlights (low beam) |
| 40 | IG2 MAIN | 20 | Multiport fuel injection system/sequential multiport fuel injection system |
| 41 | P-DOOR | 25 | Power windows, Power door lock system, Power rear view mirror control system, Outside rear view mirror defogger, Door courtesy lights |
| 42 | D-DOOR | 25 | Power windows, Power door lock system, Power rear view mirror control system, Outside rear view mirror defogger, Door courtesy lights |
| 43 | D/C CUT | 15 | All components in "DOME”, "MPX-B1”, "MPX-B2” and "MPX-B3” fuses |
| 44 | TURN-HAZ | 15 | Turn signal lights, Emergency flashers |
| 45 | ETCS | 15 | Multiport fuel injection system/sequential multiport fuel injection system |
| 46 | HORN | 10 | Horn, Headlight switch |
| 47 | RADIO №1 | 30 | Audio system |
| 48 | TEL | 5 | Telephone |
| 49 | ALT-S | 5 | Charging system |
| 50 | EFI | 25 | Multiport fuel injection system/sequential multiport fuel Injection system |
| 51 | AM2 | 30 | All components In "ST" and "IG2" fuses and starting system |
| 52 | ABS №2 | 40 | Anti* lock brake system |
| 53 | ALT | 140 | Charging system |
| 54 | ABS №1 | 60 | Anti-lock brake system |
| 55 | HEATER | 50 | Air conditioning system |
| 56 | RR J/B | 50 | All components in "DEFOG", "ROOF RH”, "ROOF LH". "LUG RH”, "LUG LH". "P-TRAY”. "LCE LP", and "FUEL OPN” fuses |
| 57 | H-LP CLN | 30 | Headlight cleaner |
| 58 | FAN | 40 | Air conditioning system |
| 59 | FAN №2 | 40 | Air conditioning system |
| 60 | H-LP R LWR | 15 | Right-hand headlight (low beam) |
| 61 | H-LP L LWR | 15 | Left-hand headlight (low beam) |
| 62 | H-LP UPR | 20 | Headlight (high beam), Headlight switch |
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Engine Compartment Fuse Box №2 (Left)
Push the tabs in and lift the lid off.
| № | Fuse | A | Description |
|---|---|---|---|
| 63 | STARTER | 7.5 | Starting system |
| 64 | EFI №2 | 10 | Multiport fuel injection system/sequential multiport fuel injection system, Emission control system |
| 65 | IGN | 5 | Multiport fuel injection system/sequential multiport fuel injection system, Anti-lock brake system, Traction control system, Vehicle stability control system, Cruise control system |
| 66 | INJ | 5 | Multiport fuel injection system/sequential multiport fuel injection system |
Luggage Compartment Fuse Box Diagram
Pull the tab and remove the lid.
| № | Fuse | A | Description |
|---|---|---|---|
| 30 | DEFOG | 30 | Rear window defoggor |
| 31 | LCE LP | 7.5 | License plate lights |
| 32 | ROOF RH | 20 | Retractable hardtop lock system |
| 33 | FUEL OPN | 10 | Fuel filler door opener |
| 34 | ROOF LH | 20 | Retractable hardtop lock system |
| 38 | P-TRAY | 20 | Quarter window |
| 36 | LUG LH | 20 | Luggage lock system |
| 37 | LUG RH | 20 | Luggage lock system |
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