Lexus RX - 2008 Fuse Box Diagram

Lexus RX - 2008 Fuse Box Diagram

286
3-6. Other interior features
The power outlet can be used when
12 V
The engine switch is in the ACC or ON position.
115 VAC
The engine switch is in the ON position.
NOTICE
To avoid damaging the power outlet
Close the power outlet lid when the power outlet is not in use.
Foreign objects or liquids that enter the power outlet may cause a short circuit.
To prevent the fuse from being blown
12 V
Do not use an accessory that uses more than 12 V 10 A.
115 VAC
Do not use a 115 VAC appliance that requires more than 100 W.
If a 115 VAC appliance that consumes more than 100 W is used, the protection
circuit will cut the power supply.
Luggage compartment (115 VAC)*
Main switch
To use the power outlet, turn
on the main switch.
Power outlet socket
*: If equipped
319
4-3. Do-it-yourself maintenance
4
Maintenance and care
Items
Parts and tools
Engine oil level
(
P. 326)
• “Toyota Genuine Motor Oil” or
equivalent
• Rag or paper towel, funnel (used
only for adding engine oil)
Fuses
(
P. 359)
Fuse with same amperage rating as
original
Headlight aim
(
P. 371)
• Phillips-head screwdriver
Power steering fluid level
(
P. 333
)
• Automatic transmission fluid
DEXRON
®
II or III
• Rag or paper towel
• Clean funnel
Radiator and condenser
(
P. 331)
Tire inflation pressure
(
P. 346)
• Tire pressure gauge
• Compressed air source
Washer fluid
(
P. 337)
• Water washer fluid containing anti-
freeze (for winter use)
• Funnel
324
4-3. Do-it-yourself maintenance
Engine compartment
Power steering fluid reservoir
(
P. 333)
Engine oil filler cap
(
P. 326)
Engine oil level dipstick
(
P. 326)
Brake fluid reservoir
(
P. 331)
Fuse box
(
P. 359)
Battery
(
P. 334)
Radiator
(
P. 331)
Condenser
(
P. 331)
Electric cooling fans
Engine coolant reservoir
(
P. 330)
Washer fluid tank
(
P. 337)
359
4-3. Do-it-yourself maintenance
4
Maintenance and care
Checking and replacing fuses
If any of the electrical components do not operate, a fuse may have blown.
If this happens, check and replace the fuses as necessary.
Turn the engine switch to the LOCK position.
Open the fuse box cover.
Engine compartment
Push the tabs in and lift the lid
off.
Driver's
side
instrument
panel
Remove the lid.
After a system failure, see “Fuse layout and amperage ratings”
(
P. 361) for details about which fuse to check.
Remove the fuse with the pull-
out tool.
STEP
1
STEP
2
STEP
3
STEP
4
360
4-3. Do-it-yourself maintenance
Check if the fuse has blown.
Type A
Normal fuse
Blown fuse
Replace it with one of an appro-
priate
amperage
rating.
The
amperage rating can be found
on the fuse box lid.
Type B and C
Type B
Type C
Normal fuse
Blown fuse
Replace it with one of an appro-
priate
amperage
rating.
The
amperage rating can be found
on the fuse box lid.
STEP
5
361
4-3. Do-it-yourself maintenance
4
Maintenance and care
Fuse layout and amperage ratings
Engine compartment
Fuse
Ampere
Circuit
1
AIRSUS*
1
60
Electronically modulated air suspen-
sion
INP-J/B*
2
100
HEATER, TAIL, PANEL, FR FOG,
CIG, RADIO NO. 2, ECU-ACC,
PWR OUTLET NO. 1, GAUGE NO.
1, ECU-IG NO.1, FR WIP, RR WIP,
WASHER, SEAT HTR, ECU-IG NO.
2, P/SEAT, PWR, TI&TE, RR DOOR
LH, RR DOOR RH, MPX-B, AM1,
DOOR NO.2, STOP, OBD, FUEL
OPN, AIRSUS (7.5 A), S/ROOF, FR
DEF, RR FOG
*
1
: With electronically modulated air suspension
*
2
: Without electronically modulated air suspension
362
4-3. Do-it-yourself maintenance
2
ALT
140
INP-J/B, AIRSUS (60 A), ABS NO. 1,
ABS NO. 2, RDI FAN, RR DEF,
HEATER, PBD, H-LP CLN/MSB, H-
LP CLN, POWER OUTLET NO. 2,
TOWING, TAIL, PANEL, FR FOG,
CIG, RADIO NO. 2, ECU-ACC,
PWR OUTLET NO. 1, GAUGE NO.
1, ECU-IG NO. 1, FR WIP, RR WIP,
WASHER, HEATER, SEAT HTR,
ECU-IG NO. 2, P/SEAT, PWR, CRT,
TI&TE, RR DOOR LH, RR DOOR
RH, MPX-B, AM1, DOOR NO. 2,
STOP, OBD, FUEL OPN, AIRSUS
(7.5 A), S/ROOF, FR DEF, RR FOG
3
PBD
30
Power back door
4
H-LP CLN/MSB*
1
30
Headlight cleaner
H-LP CLN*
2
30
Headlight cleaner
5
ABS NO. 1
30
Anti-lock brake system, vehicle stabil-
ity control system, traction control sys-
tem, brake assist system
6
RR DEF
40
Rear window defogger
7
HEATER
50
Air conditioning system, rear window
defogger
8
DRL/WIP-S
7.5
Daytime running light system
9
H-LP L LWR
15
Left-hand headlight (low beam)
10
H-LP L UPR
15
Left-hand headlight (high beam)
11
H-LP R UPR
15
Right-hand headlight (high beam)
*
1
: With electronically modulated air suspension
*
2
: Without electronically modulated air suspension
Fuse
Ampere
Circuit
363
4-3. Do-it-yourself maintenance
4
Maintenance and care
12
TOWING
30
Trailer lights
13
CRT
7.5
Audio system
14
ABS NO. 2
50
Anti-lock brake system, vehicle stabil-
ity control system, traction control sys-
tem, brake assist system
15
RDI FAN
50
Electric cooling fans
16
HAZ
15
Turn signal lights
17
A/F
25
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
18
ALT-S
7.5
Charging system
19
ETCS
10
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
20
HORN
10
Horns
21
MAIN
40
Daytime running light system, left-
hand headlight, right-hand headlight,
H-LP R LWR, H-LP R UPR, H-LP L
UPR, H-LP L LWR, DRL
22
AM2
30
Starting system, GAUGE NO. 2,
IGN, IG2
23
RADIO NO. 1
15
Audio system, navigation system
Fuse
Ampere
Circuit
364
4-3. Do-it-yourself maintenance
24
ECU-B
7.5
Power window, multiplex communica-
tion system, gauge and meters, instru-
ment cluster lights, instrument panel
lights, air conditioning system, garage
door opener, illuminated entry system,
wireless remote control system,
power back door, driving position
memory system, navigation system
display, moon roof, tilt and telescopic
steering, power seats, outside rear
view mirror, windshield wipers
25
DOME
7.5
Gauge and meters, personal lights,
vanity lights, door courtesy lights,
inside door handle lights, engine
switch light, foot well lighting, scuff
lighting, luggage compartment light,
interior light
26
AMP
30
Audio system
27
DOOR NO. 1
25
Multiplex communication system
28
INJ
10
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
29
EFI NO. 1
25
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem, EFI NO. 2
Fuse
Ampere
Circuit
365
4-3. Do-it-yourself maintenance
4
Maintenance and care
30
H-LP R LWR
15
Right-hand headlight (low beam)
31
PWR OUTLET
NO. 2
20
Power outlet
32
EFI NO. 2
10
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
Fuse
Ampere
Circuit
366
4-3. Do-it-yourself maintenance
Driver’s side instrument panel
Fuse
Ampere
Circuit
1
RR DOOR RH
20
Rear right side power window
2
RR DOOR LH
20
Rear left side power window
3
FUEL OPN
7.5
Fuel filler door opener
4
FR FOG
15
Front fog lights
5
OBD
7.5
On-board diagnosis system
6
FR DEF
25
Windshield wiper de-icer, MIR HTR
7
STOP
10
Tail lights, high mounted stoplight, rear
light failure warning light, anti-lock
brake system, vehicle stability control
system, traction control system, brake
assist system, electronically modu-
lated air suspension, shift lock control
system, multiport fuel injection sys-
tem/sequential multiport fuel injection
system
8
TI&TE
30
Tilt and telescopic steering
9
MPX-B
7.5
Security system
367
4-3. Do-it-yourself maintenance
4
Maintenance and care
10
AM1
7.5
Starter system
11
RR FOG
7.5
No circuit
12
AIR SUS
7.5
Electronically modulated air suspen-
sion
13
DOOR NO. 2
25
Multiplex communication system
14
S/ROOF
30
Moon roof
15
TAIL
10
Front fog lights, instrument cluster
lights, instrument panel lights, front
side marker lights, tail lights, licence
plate lights, towing converter
16
PANEL
7.5
Glove box light, instrument cluster
lights, instrument panel lights, console
box light, audio system, power outlet,
garage door opener switch, electroni-
cally controlled automatic transmis-
sion system, headlight cleaner,
electronically modulated air suspen-
sion, seat heaters, steering wheel
audio switches, power back door
Fuse
Ampere
Circuit
368
4-3. Do-it-yourself maintenance
17
ECU-IG NO. 1
7.5
Power rear view mirror control, moon
roof, multiplex communication system,
navigation system display, shift lock
control system, multiplex communica-
tion system (power door lock system,
wireless remote control system), driv-
ing position memory system, vehicle
stability control system, traction con-
trol system, windshield wipers, elec-
tronically controlled automatic
transmission, seat heaters, power
seats, tilt and telescopic steering,
power back door, electronically mod-
ulated air suspension
18
ECU-IG NO. 2
10
Automatic headlight leveling system,
vehicle stability control system,
dynamic laser cruise control, head-
light cleaner, adaptive front-lighting
system
19
HEATER
7.5
Electric cooling fans, air conditioning
system, rear window defogger, engine
switch, windshield wiper de-icer
20
WASHER
20
Windshield washer
21
SEAT HTR
20
Seat heaters
22
GAUGE NO.1
7.5
Instrument cluster lights, instrument
panel lights, emergency flashers, seat
belt, power outlet, rear light failure
warning light, multiport fuel injection
system/sequential multiport fuel injec-
tion system, back-up lights
23
FR WIP
30
Windshield wipers
Fuse
Ampere
Circuit
369
4-3. Do-it-yourself maintenance
4
Maintenance and care
24
RR WIP
15
Rear window wiper
25
IG2
7.5
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
26
IGN
10
SRS airbag system, multiport fuel
injection system/sequential multiport
fuel injection system, front passenger
occupant classification system, stop
lights
27
GAUGE NO. 2
7.5
Gauge and meters
28
ECU-ACC
7.5
Navigation system display, power rear
view mirror control, shift lock control
system, multiplex communication sys-
tem
29
CIG
15
Cigarette lighter, power outlet
30
PWR OUTLET
NO. 1
15
Power outlet
31
RADIO NO. 2
7.5
Instrument cluster lights, instrument
panel lights, navigation system, audio
system
32
MIR HTR
10
Outside rear view mirror defogger
33
P/SEAT
30
Power seats
34
PWR
30
Power window, multiplex communica-
tion system (power door lock system,
wireless remote control system), out-
side rear view mirror
Fuse
Ampere
Circuit
370
4-3. Do-it-yourself maintenance
After a fuse is replaced
If the lights do not turn on even after the fuse has been replaced, a bulb may need
replacement. (
P. 372)
If the replaced fuse blows again, have the vehicle inspected by your Lexus dealer.
If there is an overload in the circuits
The fuses are designed to blow before the entire wiring harness is damaged.
CAUTION
To prevent system breakdowns and vehicle fire
Observe the following precautions.
Failing to do so may cause damage, and possibly a fire or injury.
Never use a fuse of a higher amperage rating than indicated, or use any other
object in place of a fuse.
Always use a genuine Lexus fuse or equivalent.
Never replace a fuse with a wire, even as a temporary fix.
This can cause extensive damage or even fire.
Do not modify fuses or the fuse box.
NOTICE
Before replacing fuses
Have the cause of electrical overload determined and repaired by your Lexus
dealer.
457
6
Vehicle specifications
6-3. Initialization
Items to initialize
Item
When to initialize
Reference
Power window
• After reconnecting or changing the
battery
• After changing a fuse
P. 60
Power back door
• After reconnecting or changing the
battery
• After changing a fuse
P. 32
Moon roof
(Multi-panel type only)
• After reconnecting or changing the
battery
• After changing a fuse
P. 63
Engine oil maintenance
data
After changing engine oil
P. 326
Tire pressure warning
system
• When changing the tire inflation
pressure by changing traveling speed
or load weight, etc.
• When changing the tire size.
P. 338
The following items must be initialized for normal system operation in cases
such as after the battery is reconnected, or maintenance is performed on
the vehicle.