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Fuse box diagram (fuse layout), location, and assignment of fuses and relays Lexus ES 300 (XV20) (1996, 1997, 1998, 1999, 2000, 2001).
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.
Passenger Compartment
- Fuse Box
- Integration Relay
- Turn Signal Flasher Relay
- Front Fog Light Relay
- Cruise Control ECU
- Absorber Control ECU
- Theft Deterrent ECU
- A/C Control Assembly
- ABS ECU or ABS and Traction ECU
- Stereo Component Amplifier
- Engine Control Module
- Wireless Door Lock ECU
- Shift Lock Control ECU
- Airbag Sensor Assembly
- Daytime Running Light Relay
- Moon Roof Control SW and Relay
- Telephone Transceiver and Speaker Relay
- Light Failure Sensor
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Passenger Compartment Fuse Box Diagram
The fuse box is behind the cover to the left of the steering column.
Rear side
| № | Fuse | A | Circuit(s) protected |
|---|---|---|---|
| 1 | SEAT-HEATER | 20 | Seat heater system |
| 2 | HEATER | 10 | Air conditioning system |
| 3 | GAUGE | 10 | Gauges and measures, service reminder indicators and warning buzzers, Back-up light, Door courtesy light, Seat heater, Power window system |
| 4 | WIPER | 20 | 1996-1998: Windshield wipers and washer |
| 25 | 1999-2001: Windshield wipers and washer | ||
| 5 | MIRROR-HEATER | 10 | Outside rear view mirror defogger |
| 6 | ECU-IG | 15 | Cruise control system, Anti-lock brake system, Shift lock system, Power brake antenna, Theft deterrent system, Electronic modulated suspension, Wireless remote control |
| 7 | IGN | 5 | SRS airbag system, Multiport fuel injection |
| 8 | STOP | 15 | Stop lights, High mounted stoplight, Cruise control system, Electronic modulated suspension, Anti-lock brake system, Shift lock system, Power seat system, Multiport fuel injection |
| 9 | TAIL | 10 | Tail light, Side marker lights, License plate lights |
| 10 | POWER-OUTLET | 15 | Power outlet |
| 11 | OBD | 7.5 | On-board diagnosis system |
| 12 | FOG | 15 | Fog lights |
| 13 | STARTER | 5 | Starting system |
| 14 | DOOR | 25 | Door courtesy light, Theft deterrent system, Power door lock system, Trunk lid opener, Fuel filler door opener |
| 15 | PANEL | 7.5 | Instrument panlel lights, Glovebox light |
| 16 | TURN | 7.5 | Emergency flashers, Turn signal lights |
| 17 | RAD-№2 | 7.5 | Audio System |
| 18 | CIG | 15 | Cigarette lighter, Clock, SRS airbag system, Theft deterrent system |
| 19 | - | - | Noise filter |
| 20 | - | - | Noise filter |
| 21 | DEF | 40 | Rear window defogger, Outside rear view mirror defogger |
| 22 | PWR | 30 | Power window, Electronic moon roof, Power seat system |
| 23 | AM1 | 40 | Power window, Electronic moon roof, Power seat system |
| R1 | Power | ||
| R2 | Defogger | ||
| R3 | Taillight | ||
| R4 | Integration Relay | ||
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Engine Compartment
- Fuse Box
- Additional Fuse Box (Left)
- Additional Fuse Box (Right)
Engine Compartment Fuse Box Diagram
| № | Fuse | A | Circuit(s) protected |
|---|---|---|---|
| 1 | A/F HTR | 25 | 1999-2001: Air fuel ratio sensor |
| 2 | - | - | - |
| 3 | A/C | 10 | No circuit |
| 4 | - | 10 | Spare fuse |
| 5 | - | 15 | Spare fuse |
| 6 | - | 30 | Spare fuse |
| 7 | CDS | 30 | Air conditioning system |
| 8 | RDI | 30 | Electric cooling fans |
| 9 | ALT-S | 5 | Charging system |
| 10 | H-LP RH or H-LP RH HI | 15 | 1996-1998: Right-hand headlight (high beam) |
| HEAD RH(UPR) | 20 | 1999-2001: Right-hand headlight (high beam) | |
| 11 | EFI | 15 | Multiport fuel injection |
| 12 | HORN | 10 | Theft deterrent system |
| 13 | HAZ | 10 | 1996-1998: Emergency flashers, Turn signal lights |
| HAZARD | 15 | 1999-2001: Emergency flashers, Turn signal lights | |
| 14 | AM2 | 30 | Starting system |
| 15 | TEL | 5 | Telephone |
| 16 | H-LP LH or H-LP LH HI | 15 | 1996-1998: Left-hand headlight (high beam) |
| HEAD LH(UPR) | 20 | 1999-2001: Left-hand headlight | |
| 17 | RADIO №1 | 20 | Audio system |
| 18 | - | - | - |
| 19 | MAIN | 40 | Headlight, Starting system |
| 20 | DOME | 7.5 | Theft deterrent system, Clock, Door courtesy light, Interior light, Ignition switch light, Vanity light, Wireless remote control system |
| 21 | ECU-B | 10 | Cruise control system, Air conditioning system, Power seat system |
| 22 | ALT | 100 | Charging system |
| 23 | - | - | - |
| 24 | HTR | 50 | Air conditioning system, Seat heater |
| 25 | T-STK Or CDS №2 | 30 | No circuit |
| R1 | Magnetic clutch (A/C) | ||
| R2 | Circuit Opening Relay (C/OPN) | ||
| R3 | Electric cooling fan (№2) | ||
| R4 | Electric cooling fan (№3) | ||
| R5 | Air conditioning system (Heater) | ||
| R6 | Main (Engine) | ||
| R7 | EFI | ||
| R8 | Headlight | ||
| R9 | Starter | ||
| R10 | Horn | ||
| R11 | Electric cooling fan (№1) | ||
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Additional Fuse Box (Left)
| № | Fuse | A | Circuit(s) protected |
|---|---|---|---|
| 1 | INJ | 20 | No circuit |
| 2 | DRL № 2 | 5 | Daytime Running Light System |
| 3 | H-LP LH (LO) | 10 | 1996-1998: Left-hand headlight (low beam) |
| H-LP LH (LWR) | 15 | 1999-2001: | |
| with discharge headlight: Left-hand headlight (low beam) | |||
| H-LP LH (LWR) | 10 | without discharge headlight: Left-hand headlight (low beam) | |
| 4 | H-LP RH (LO) | 10 | 1996-1998: Right-hand headlight (low beam) |
| H-LP RH (LWR) | 15 | 1999-2001: | |
| with discharge headlight: Right-hand headlight (low beam) | |||
| H-LP RH (LWR) | 10 | without discharge headlight: Right-hand headlight (low beam) | |
| R1 | Daytime running light system №2 | ||
| R2 | Daytime running light system №4 | ||
| R3 | Daytime running light system №3 | ||
Additional Fuse Box (Right)
| № | A | Circuit(s) protected |
|---|---|---|
| 1 | 60 | Anti-lock brake system |
| R1 | ABS motor | |
| R2 | ABS SOL | |
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