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Fuse box diagram (fuse layout), location, and assignment of fuses Lexus RX 300 (XU10) (1999, 2000, 2001, 2002, 2003).
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.
Location
- Engine compartment box #1
- Engine compartment box #2
- Driver’s side instrument panel
Passenger Compartment Fuse Box Diagram
The fuse box is located behind the cover to the left of the steering column.
| № | Fuse | A | Description |
|---|---|---|---|
| 22 | IGN | 7.5 | SRS system, Multiport fuel injection/Sequential multiport fuel injection system |
| 23 | RADIO №2 | 7.5 | Audio system, Multiplex computer |
| 24 | CIG | 15 | Cigarette lighter, Outside rear view mirrors, Power door lock system |
| 25 | D RR DOOR | 20 | Rear door lock, Rear power window |
| 26 | PWR OUTLET | 15 | Power outlets |
| 27 | FR FOG | 15 | Fog lights |
| 28 | SRS-IG | 15 | SRS system |
| 29 | ECU-IG | 15 | Telephone, Inside rear view mirror, Anti-lock brake system, Traction control system, Multi-display |
| 30 | WIPER | 25 | Windshield wipers |
| 31 | P RR DOOR | 20 | Rear door lock, Rear power window |
| 32 | P FR DOOR | 20 | Front door lock, Front power window |
| 33 | S/ROOF | 20 | Moon roof |
| 34 | HEATER | 15 | Air conditioning system |
| 35 | GAUGE | 7.5 | Multiplex computer, Service reminder indicators |
| 36 | RR WIP | 15 | Rear window wiper |
| 37 | STOP | 20 | Stop lights, High mounted stoplight, Anti-lock brake system, Traction control system |
| 38 | OBD | 7.5 | On-board diagnosis system |
| 39 | SEAT HTR | 15 | Seat heater system |
| 40 | STARTER | 7.5 | Starting system |
| 41 | WASHER | 10 | 1999: Washer |
| 20 | 2000-2003: Washer | ||
| 42 | RR FOG | 7.5 | No circuit |
| 43 | FR DEF | 20 | Rear window and outside rear view mirror defogger |
| 44 | TAIL | 10 | Tail lights, Side marker lights, License plate lights, Parking lights |
| 45 | PANEL | 7.5 | Instrument panel lights |
| 53 | AM1 | 40 | Ignition system |
| 54 | POWER | 30 | Power seats |
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Engine Compartment Fuse Box №1
| № | Fuse | A | Description |
|---|---|---|---|
| 1 | DRL | 7.5 | Daytime running light system |
Engine Compartment Fuse Box №2
- Pull-out tool
- Spare fuse
| № | Fuse | A | Description |
|---|---|---|---|
| 2 | TOWING | 20 | Trailer lights |
| 3 | H-LP R LWR | 15 | Right-hand headlight (low beam) |
| 4 | H-LP L LWR | 15 | Left-hand headlight (low beam) |
| 5 | HAZARD | 15 | Emergency flashers, Turn signal lights |
| 6 | AM2 | 20 | Starting system |
| 7 | TEL | 15 | Telephone |
| 8 | FL DOOR | 20 | Power door lock system |
| 9 | SPARE | 7.5 | Spare fuse |
| 10 | SPARE | 15 | Spare fuse |
| 11 | SPARE | 25 | Spare fuse |
| 12 | ALT-S | 7.5 | Charging system |
| 13 | HORN | 10 | Theft deterrent system, Horn |
| 14 | EFI | 20 | Multiport fuel injection system/Sequential multiport fuel injection system |
| 15 | DOME | 10 | Interior light, Vanity lights, Foot lights, Rear personal light, Gauges and meters, Multi-display |
| 16 | ECU-B | 7.5 | Multiplex computer |
| 17 | RAD №1 | 25 | Audio system |
| 18 | ABS 3 | 7.5 | Anti-lock brake system |
| 19 | H-LP R UPR | 15 | Right-hand headlight (high beam) |
| 20 | H-LP L UPR | 15 | Left-hand headlight (high beam) |
| 21 | A/F HTR | 25 | Air fuel ratio sensor |
| 46 | ABS | 60 | Anti-lock brake system |
| 47 | ALT | 140 | Charging system |
| 48 | RDI | 40 | Cooling fan system |
| 49 | CDS | 40 | Cooling fan system |
| 50 | RR DEF | 30 | Rear window and outside rear view mirror defogger |
| 51 | HEATER | 50 | Blower |
| 52 | MAIN | 50 | Starting system |
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