Fuse Box Diagrams Lexus RX300 (XU10; 1999-2003)

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In this article, you will find information about the fuses of the Lexus RX300 (XU10) (models 1999, 2000, 2001, 2002, and 2003), including diagrams of the fuse boxes, a list of fuses, their designation, and the location of the fuse blocks within the vehicle.

Lexus RX300 (XU10; 1999-2003)

Checking and Replacing Fuses in Lexus RX 300

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.
Pull the suspected fuse straight out with the pull-out tool and check it.
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.

Caution!

Never use a fuse with a higher amperage rating, or any other object, in place of a fuse. This may cause extensive damage and possibly a fire.
Always use a genuine Lexus fuse or equivalent for replacement. Never install an ordinary wire – even for a temporary fix. This may cause extensive damage and possibly a fire.
Before replacing the fuses, have the cause of electrical overload determined and repaired by your Lexus dealer.

Location of Fuse Boxes

Engine Compartment: Lexus RX300 (XU10; 1999-2003): Engine compartment fuse box location

Passenger Compartment:

Fuse Box Diagrams

1999-2000

Engine Compartment Fuse Boxes

List of fuses in the engine compartment (1999-2000)

№	Fuse	A	CIRCUIT
1	DRL	7.5A	Daytime Running Light System
2	H-LP R LWR	15A	Right-hand headlight (Low beam)
3	H-LP L LWR	15A	Left-hand headlight (Low beam)
4	HAZARD	15A	Emergency flashers, Turn signal lights
5	AM2	20A	Starting system
6	TEL	15A	Telephone
7	FL DOOR	20A	Power door lock system
8	SPARE	7.5A	Spare fuse
9	SPARE	15A	Spare fuse
10	SPARE	25A	Spare fuse
11	ALT-S	7.5A	Charging system
12	HORN	10A	Theft deterrent system, Horn
13	EFI	20A	Multiport fuel injection system/Sequential multiport fuel injection system
14	DOME	10A	Interior light, Vanity lights, Foot lights, Rear personal light, Gauges and meters, Multi-display
15	ECU-B	7.5A	Multiplex computer
16	RAD NO.1	20A	Audio system
17	H-LP R UPR	15A	Right-hand headlight (high beam)
18	H-LP L UPR	15A	Left-hand headlight (high beam)
19	A/F HTR	25A	Air fuel ratio sensor
45	ABS	60A	Anti-lock brake system
46	ALT	140A	Charging system
47	RDI	40A	Cooling fan system
48	CDS	40A	Cooling fan system
49	RR DEF	30A	Rear window and outside rear view mirror defogger
50	HEATER	50A	Blower
51	MAIN	50A	Starting system

Instrument Panel Fuse Box

List of fuses in the instrument panel (1999-2000)

№	Fuse	A	CIRCUIT
20	IGN	7.5A	SRS system, Multiport fuel injection/Sequential multiport fuel injection system
21	RADIO NO.2	7.5A	Audio system, Multiplex computer
22	CIG	15A	Cigarette lighter, Outside rear view mirrors, Power door lock system
23	D.RR DOOR	20A	Rear door lock, Rear power window
24	PWR OUTLET	15A	Power outlets
25	FR FOG	15A	Fog lights
26	SRS-ACC	15A	SRS system
27	ECU-IG	15A	Telephone, Inside rear view mirror, Anti-lock brake system, Traction control system, Multi-display
28	WIPER	25A	Windshield wipers
29	P RR DOOR	20A	Rear door lock, Rear power window
30	P FR DOOR	20A	Front door lock, Front power window
31	S/ROOF	20A	Moon roof
32	HEATER	15A	Air conditioning system
33	GAUGE	7.5A	Multiplex computer, Service reminder indicators
34	RR WIP	15A	Rear window wiper
35	STOP	20A	Stop lights, High mounted stoplight, Anti-lock brake system, Traction control system
36	OBD	7.5A	On-board diagnosis system
37	SEAT HTR	15A	Seat heater system
38	STARTER	7.5A	Starting system
39	WASHER	20A	Washer
40	RR FOG	7.5A	No circuit
41	FR DEF	20A	Rear window and outside rear view mirror defogger
42	SRS-B	7.5A	SRS system
43	TAIL	10A	Tail lights, Side marker lights, License plate lights, Parking lights
44	PANEL	7.5A	Instrument panel lights
52	AM1	40A	Ignition system
53	POWER	30A	Power seats

2001-2003

Engine Compartment Fuse Boxes

List of fuses in the engine compartment (2001-2003)

№	Fuse	A	CIRCUIT
1	DRL	7.5A	Daytime running light system
2	TOWING	20A	Trailer lights
3	H-LP R LWR	15A	Right-hand headlight (low beam)
4	H-LP L LWR	15A	Left-hand headlight (low beam)
5	HAZARD	15A	Emergency flashers, Turn signal lights
6	AM2	20A	Starting system
7	TEL	15A	Telephone
8	FL DOOR	20A	Power door lock system
9	SPARE	7.5A	Spare fuse
10	SPARE	15A	Spare fuse
11	SPARE	25A	Spare fuse
12	ALT-S	7.5A	Charging system
13	HORN	10A	Theft deterrent system, Horn
14	EFI	20A	Multiport fuel injection system/Sequential multiport fuel injection system
15	DOME	10A	Interior light, Vanity lights, Foot lights, Rear personal light, Gauges and meters, Multi-display
16	ECU-B	7.5A	Multiplex computer
17	RAD NO.1	25A	Audio system
18	ABS 3	7.5A	Anti-lock brake system
19	H-LP R UPR	15A	Right-hand headlight (high beam)
20	H-LP L UPR	15A	Left-hand headlight (high beam)
21	A/F HTR	25A	Air fuel ratio sensor
46	ABS	60A	Anti-lock brake system
47	ALT	140A	Charging system
48	RDI	40A	Cooling fan system
49	CDS	40A	Cooling fan system
50	RR DEF	30A	Rear window and outside rear view mirror defogger
51	HEATER	50A	Blower
52	MAIN	50A	Starting system

Instrument Panel Fuse Box

List of fuses in the instrument panel (2001-2003)

№	Fuse	A	CIRCUIT
22	IGN	7.5A	SRS system, Multiport fuel injection/Sequential multiport fuel injection system
23	RADIO NO.2	7.5A	Audio system, Multiplex computer
24	CIG	15A	Cigarette lighter, Outside rear view mirrors, Power door lock system
25	D RR DOOR	20A	Rear door lock, Rear power window
26	PWR OUTLET	15A	Power outlets
27	FR FOG	15A	Fog lights
28	SRS-IG	15A	SRS system
29	ECU-IG	15A	Telephone, Inside rearview mirror, Anti-lock brake system, Traction control system, Multi-display
30	WIPER	25A	Windshield wipers
31	P RR DOOR	20A	Rear door lock, Rear power window
32	P FR DOOR	20A	Front door lock, Front power window
33	S/ROOF	20A	Moon roof
34	HEATER	15A	Air conditioning system
35	GAUGE	7.5A	Multiplex computer, Service reminder indicators
36	RR WIP	15A	Rear window wiper
37	STOP	20A	Stop lights, High mounted stoplight, Anti-lock brake system, Traction control system
38	OBD	7.5A	On-board diagnosis system
39	SEAT HTR	15A	Seat heater system
40	STARTER	7.5A	Starting system
41	WASHER	20A	Washer
42	RR FOG	7.5A	No circuit
43	FR DEF	20A	Rear window and outside rear view mirror defogger
44	TAIL	10A	Tail lights, Side marker lights, License plate lights, Parking lights
45	PANEL	7.5A	Instrument panel lights
53	AM1	40A	Ignition system
54	POWER	30A	Power seats