LEXUS RX350 2011 Owners Manual

501
4-3. Do-it-yourself maintenance
4

Maintenance and care
Fuse layout and amperage ratings
nEngine compartment
FuseAmpereCircuit
1RDI FAN NO. 180 AElectric cooling fans
2RR DEF50 ARear window defogger
3AIR SUS50 A
4HTR50 AAir conditioning system
5SPARE30 A
6SPARE40 A
7ABS NO. 230 AAnti-lock brake system
8H-LP CLN30 AHeadlight cleaner
9PBD30 APower back door system
10ST30 AStarter system

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4-3. Do-it-yourself maintenance
11PD50 A
Daytime running light system, A/F,
H-LP RH HI, H-LP LH LO, H-LP RH
LO, H-LP LH HI, HORN, S-HORN,
multiplex communication system,
multiport fuel injection system/
sequential multiport fuel injection sys-
tem
12ABS NO. 150 AAnti-lock brake system
13EPS60 AElectric power steering system
14ALT140 A
FUEL OPN, DR LOCK, OBD, RR
FOG, S/ROOF, 4WD, INVERTER,
ECU IG1 NO. 1, ECU IG1 NO. 2,
PANEL, GAUGE NO. 1
15AMP130 AAudio system
16EFI MAIN30 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem, EFI NO. 1, EFI NO. 2
17AMP230 AAudio system
18IG230 AStarter system, IGN, GAUGE NO. 2,
ECU IG2
19IP JB25 APower door lock system
20STR LOCK20 AStarter system
21RAD NO. 315 A
Meters and gauges lights, instrument
panel lights, navigation system, audio
system, rear seat entertainment sys-
tem
22HAZ15 AEmergency flashers
FuseAmpereCircuit

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4-3. Do-it-yourself maintenance
4

Maintenance and care
23ETCS10 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
24RAD NO. 110 AAudio system
25AM27. 5 AStarting system
26ECU-B NO. 27. 5 A
Air conditioning system, front passen-
ger occupant classification system,
starter system
27MAYDAY/TEL7. 5 AMayday system
28IMMOBI7. 5 A
29ALT-S7. 5 ACharging system
30IGN10 A
Starter system, multiport fuel injection
system/sequential multiport fuel injec-
tion system
31DOME10 A
Vanity mirror lights, luggage compart-
ment lights, interior lights, personal
lights
32ECU-B NO. 17. 5 A
Interior lights, personal lights, tilt and
telescopic steering, multiplex commu-
nication system, meters and gauges,
power window, driving position mem-
ory system, power seats, power back
door, head-up display, starter system,
air conditioning system, power door
lock system
33EFI NO. 110 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
34WIP-S7. 5 AWindshield wipers and washer
FuseAmpereCircuit

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4-3. Do-it-yourself maintenance
35AFS7. 5 AAdaptive front-lighting system
36BK/UP LP7. 5 ABack-up lights
37HEATER NO. 27. 5 AAir conditioning system, AWD system
38ECU IG110 A
Adaptive front-lighting system, head-
light cleaner, cooling fan, cruise con-
trol, vehicle stability control, vehicle
dynamics integrated management
39EFI NO. 210 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
40F/ P U M P15 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
41DEICER25 AWindshield wipers and washer
42STOP7. 5 A
Vehicle stability control, vehicle
dynamics integrated management,
high mounted stoplight
43TOW I N G BAT T20 ATrailer battery
44TOW I N G30 ATrailer lights
45FILTER10 ACondenser
46IG1 MAIN30 AECU IG1, BK/UP LP,
HEATER NO. 2, AFS
47H-LP RH HI15 ARight-hand headlight (high beam)
48H-LP LH HI15 ALeft-hand headlight (high beam)
49BIXENON10 ADischarge headlight
50H-LP RH LO15 ARight-hand headlight (low beam)
51H-LP LH LO15 ALeft-hand headlight (low beam)
FuseAmpereCircuit

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4-3. Do-it-yourself maintenance
4

Maintenance and care
nDriver’s side instrument panel
52HORN10 AHorn
53A/F20 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
54S-HORN7. 5 ASecurity horn
FuseAmpereCircuit
1P/ P O I N T15 APo w e r o u t l e t
2ECU-ACC10 A
Navigation system, outside rear view
mirror, multiplex communication sys-
tem, multi-information display, head-
up display
3CIG15 APo w e r o u t l e t
4RADIO NO. 27. 5 AAudio system, power outlet
5GAUGE NO. 110 AEmergency flashers, navigation sys-
tem, head-up display
FuseAmpereCircuit

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4-3. Do-it-yourself maintenance
6ECU-IG1 NO. 310 A
Outside rear view mirror, windshield
wipers and washer, seat heaters,
starter system, power outlet, moon
roof, Automatic High Beam
7ECU-IG1 NO. 110 A
Multiplex communication system,
electric power steering system, shift
lock control system, tilt and telescopic
steering, starter system, automatic
transmission system, power back
door, tire pressure warning system
8S/ROOF30 AMoon roof
9FUEL OPN7. 5 AFuel filler door opener
10PSB30 APre-collision seat belt
11TI & TE30 ATilt and telescopic steering system
12DR LOCK10 APower door lock system
13FR FOG15 AFront fog lights
14P-S E AT L H30 APo w e r s e a t ( l e f t - s i d e )
154WD7. 5 AAW D s y s t e m
16INVERTER20 A
17RR FOG7. 5 A
18D/L ALT B25 AMultiplex communication system
19HEATER10 AAir conditioning system
20ECU-IG1 NO. 210 A
Air conditioning system, multiport fuel
injection system/sequential multiport
fuel injection system, SRS airbag sys-
tem, multi-information display
FuseAmpereCircuit

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4-3. Do-it-yourself maintenance
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Maintenance and care
21PA N E L10 A
Switch illumination, navigation system,
headlight cleaner, windshield wiper
de-icer, seat heater, power back door,
audio system, multi-information dis-
play, air conditioning system
22TA I L10 A
Parking lights, side marker lights, tail
lights, license plate lights, front fog
lights, towing converter
23AIR SUS20 A
24P-S E AT R H30 APower seat (right-side)
25OBD7. 5 AOn-Board diagnosis
26FR DOOR25 AFront power window (right-side)
27RR DOOR25 ARear power window (right-side)
28FL DOOR25 AFront power window (left-side)
29RL DOOR25 ARear power window (left-side)
30FR WASH25 AWindshield wipers and washer
31RR WIP15 AWindshield wipers and washer
32RR WASH20 AWindshield wipers and washer
33FR WIP30 AWindshield wipers and washer
34ECU IG210 AStarter system, Intuitive parking assist,
AWD s y s t e m
35GAUGE NO. 27. 5 AStarter system
36RH S-HTR15 ASeat heater (right-side)
37LH S-HTR15 ASeat heater (left-side)
FuseAmpereCircuit

508
4-3. Do-it-yourself maintenance
nAfter a fuse is replaced
lIf the lights do not turn on even after the fuse has been replaced, a bulb may
need replacement. (→P. 511)
lIf the replaced fuse blows again, have the vehicle inspected by your Lexus
dealer.
nIf there is an overload in the circuit
The fuses are designed to blow, protecting the wiring harness from damage.
CAUTION
nTo prevent system breakdowns and vehicle fire
Observe the following precautions.
Failing to do so may cause damage, and possibly a fire or injury.
lNever use a fuse of a higher amperage rating than indicated, or use any other
object in place of a fuse.
lAlways 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.
lDo not modify fuse or fuse boxes.
NOTICE
nBefore replacing fuses
Have the cause of electrical overload determined and repaired by your Lexus
dealer.

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4-3. Do-it-yourself maintenance
4

Maintenance and care
Headlight aim (discharge headlights)
nVertical movement adjustment bolts
Adjustment bolt A
Adjustment bolt B
nBefore checking the headlight aim
Remove the engine compartment cover. (→P. 464)
Make sure the vehicle has a full tank of gas and the area around
the headlight is not deformed.
Park the vehicle on level ground.
Sit in the driver’s seat.
Bounce the vehicle several times.
nAdjusting the headlight aim
Turn bolt A in either direction
using a Phillips-head screw-
driver.
Remember the turning direction
and the number of turns.
STEP1
STEP2
STEP3
STEP4
STEP5
STEP1

510
4-3. Do-it-yourself maintenance
Turn bolt B the same number of
turns and in the same direction
as in step 1 using a Phillips-head
screwdriver.
If the headlight cannot be
adjusted using this procedure,
take the vehicle to your Lexus
dealer to adjust the headlight
aim.
STEP2