Fuse Box Diagrams Lexus LS400 (XF20; 1998-2000)

In this article, you will find information about the fuses of the Lexus LS400 (XF20/UCF20) (models 1998, 1999, and 2000), including diagrams of the fuse boxes, a list of fuses, their designation, and the location of the fuse blocks within the vehicle.

Checking and Replacing Fuses in Lexus LS 400

1. Turn the ignition switch off and open the fuse box lid. Determine which fuse may be causing the problem. The lid of the fuse box shows the name of the circuit for each fuse.
2. Pull the suspected fuse straight out with the pull-out tool and check it.
3. Look carefully at the fuse. If the thin wire 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. If it has blown, push a new fuse into the clips. Only install a fuse with the amperage rating designated on the fuse box lid.

If the new fuse immediately blows out, there is a problem with the electrical system. Have your Lexus dealer correct it as soon as possible.

Location of Fuse Boxes

Passenger Compartment:

Engine Compartment:

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Fuse Box Diagrams

1998-2000

Instrument Panel Fuse Box

List of fuses in the driver’s side kick panel

№	Fuse	A	CIRCUIT
1	TURN	7.5A	Turn signal lights
2	WIPER	20A	Windshield wipers
3	HEATER	10A	Air conditioning system, Rear window defogger, Multiport fuel injection system / sequential multiport fuel injection system
4	FR FOG	15A	Fog lights
5	ECU-IG	10A	Power steering control system, Charging system, Vehicle skid control system
6	PWR-IG	15A	Automatic headlight leveling system, Moon roof, Headlight cleaner, Power seat switch, Tilt and telescopic steering, Shift lock system
7	GAUGE	10A	Gauges and meters, service reminder indicators and warning buzzers, Back-up lights, Vehicle skid control system, Multiport fuel injection system / sequential multiport fuel injection system, Automatic transmission system
8	IGN	10A	SRS, Multiport fuel injection system / sequential multiport fuel injection system
9	RR FOG	7.5A	No circuit
10	FUEL OPN	10A	Fuel opener system
11	RR CIG	15A	Rear cigarette lighter, Power outlet
12	FR CIG	15A	Front cigarette lighter, SRS
13	A/C	7.5A	Air conditioning system
14	P RR DOOR	20A	Rear door lock, Rear power window
15	STOP LP	25A	Stop lights, High mounted stop light
16	RADIO NO.2	15A	Audio system, Outside rear view mirror, Shift lock system, Air conditioning system
17	PANEL	7.5A	Instrument panel lights, Air conditioning system, Glove box light, Audio system
18	STARTER	7.5A	Starting system, Automatic transmission system, Multiport fuel injection system / sequential multiport fuel injection system
19	TAIL	7.5A	Tail lights, Side marker lights, License plate lights
20	STOP-S	7.5A	Shift lock system, Height control system, Anti-lock brake system, Vehicle skid control system
21	RR S/HTR	15A	No circuit
22	WASHER	20A	Windshield washer
23	AIR SUS	20A	Height control system
24	D RR DOOR	20A	Rear door lock, Rear power window

Engine Compartment Fuse Box

List of fuses in the engine compartment

№	Fuse	A	CIRCUIT
25	HORN	10A	Horns
26	ETCS	15A	Electronic throttle control system
27	H-LP L UPR	10A	Left-hand headlight (high beam)
28	H-LP R UPR	10A	Right-hand headlight (high beam)
29	EFI NO.2	10A	Emission control system
30	MIR-HTR	15A	Outside rear view mirror defogger
31	FR S/HTR	15A	Seat heater
32	ALT-S	7.5A	Charging system
33	TEL	15A	Telephone
34	CRT	15A	Multi information display
35	RADIO NO.1	20A	Audio system
36	MPX-B	10A	Power window, Door lock, Tilt and telescopic steering
37	ECU-B	7.5A	Vehicle skid control system, Daytime running light system
38	HAZ	10A	Emergency flashers
39	EFI NO.1	20A	Multiport fuel injection system / sequential multiport fuel injection system
40	DOME	10A	Interior light, Vanity lights, Foot lights, Rear personal light, Garage door opener
41	OBD	7.5A	On-board diagnosis system
42	DRL	10A	Daytime running light system
43	H-LP R LWR	15A	Right-hand headlight (low beam)
44	H-LP L LWR	15A	Left-hand headlight (low beam)

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