LEXUS RX450h 2015 Owners Manual

7014-3. Do-it-yourself maintenance
4
Maintenance and care 7
ECU-IG1 NO. 1 10 A Multiplex communication system,
steering sensor, shift lock control sys-
tem, tilt and telescopic steering,
power back door, pre-collision sys-
tem, vehicle dynamics integrated
management, tire pressure warning
system8
S/ROOF 30 A Moon roof9
FUEL OPN 7. 5 A Fuel filler door opener10
PSB 30 A Pre-collision seat belt11
TI & TE 30 A Tilt and telescopic steering system12
DR LOCK 10 A13
FR FOG 7. 5 A Front fog lights14
P-S E AT L H 30 A Po w e r s e a t ( l e f t - s i d e )15
4WD 7. 5 A AW D s y s t e m16
INVERTER 20 A Po w e r o u t l e t17
RR FOG 7. 5 A18
D/L ALT B 25 A Multiplex communication system,
power door lock system, power back
door19
EPS 10 A Electric power steering system20
ECU-IG1 NO. 2 10 A Intuitive parking assist, pre-collision
seat belt, capacitor
21
PA N E L 10 A Switch illumination, navigation system,
hybrid transmission system, audio sys-
tem, multi-information display, air con-
ditioning system, multiplex
communication systemFuse Ampere Circuit

7024-3. Do-it-yourself maintenance
22
TA I L 10 A Parking lights, front side marker lights,
tail lights, license pl ate lights, front fog
lights, towing converter23
AIR SUS 20 A24
P-S E AT R H 30 A Power seat (right-side)25
OBD 7. 5 A On-board diagnosis26
FR DOOR 25 A Front power window (right-side), out-
side rear view mirror27
RR DOOR 25 A Rear power window (right-side)28
FL DOOR 25 A Front power window (left-side), out-
side rear view mirror29
RL DOOR 25 A Rear power window (left-side)30
FR WASH 25 A Windshield wipers and washer31
RR WIP 15 A Windshield wipers and washer32
RR WASH 20 A Windshield wipers and washer33
FR WIP 30 A Windshield wipers and washer
34
ECU IG2 10 A Multiport fuel injection system/
sequential multiport fuel injection sys-
tem, front passenger occupant classi-
fication system, SRS airbag system,
stop lights, electronically controlled
brake system, steering lock system,
hybrid system35
GAUGE NO. 2 7. 5 A Gauge and meters36
RH S-HTR 15 A Seat heater (right-side)
37
LH S-HTR 15 A Seat heater (left-side)Fuse Ampere Circuit

7034-3. Do-it-yourself maintenance
4
Maintenance and care ■ Luggage compartment (type A fuse box)
■ Luggage compartment (type B fuse box) Fuse Ampere Circuit1
DCDC-S 7. 5 A Hybrid system2
CAPACITOR 10 A Capacitor
Fuse Ampere Circuit1
MAIN 180 A All electrical components2
RR-B 50 A CAPACITOR, DCDC-S3
EPS 80 A Hybrid system

7044-3. Do-it-yourself maintenance
■
After a fuse is replaced ●
If the lights do not turn on even afte r the fuse has been replaced, a bulb may
need replacement. (  P. 7 0 8 )●
If the replaced fuse blows again, have the vehicle inspected by your Lexus
dealer.■
If there is an overload in the circuit
The fuses are designed to blow, protecting the wiring harness from damage.
CAUTION■
To prevent system breakdowns and vehicle fire
Observe the following precautions.
Failure to do so may cause damage to the vehicle, and possibly a fire or injury. ●
Never use a fuse of a higher amperage rating than that in dicated, 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. ●
Do not modify the fuses or fuse boxes.
NOTICE■
Before replacing fuses
Have the cause of electrical overload determined and repaired by your Lexus
dealer as soon as possible.

7054-3. Do-it-yourself maintenance
4
Maintenance and care Headlight aim (vehicles without LED headlights) ■ Removing the engine compartment cover
 P. 6 5 5
■ Vertical movement adjusting bolts
Vehicles with halogen headlights
Adjustment bolt A
Adjustment bolt B
Vehicles with discharge headlights
Adjustment bolt A
Adjustment bolt B
■ Before checking the headlight aim
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.STEP 1
STEP 2
STEP 3
STEP 4

7064-3. Do-it-yourself maintenance
■ Adjusting the headlight aim
Vehicles with halogen headlights
Turn bolt A in either direction
using a Phillips-head screw-
driver. Remember the turning direction
and the number of turns.
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.STEP 1
STEP 2

7074-3. Do-it-yourself maintenance
4
Maintenance and care Vehicles with discharge headlights
Turn bolt A in either direction
using a Phillips-head screw-
driver. Remember the turning direction
and the number of turns in mind.
Turn bolt B the same number of
turns and in the same direction
as 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.STEP 1
STEP 2

7084-3. Do-it-yourself maintenance
Light bulbs You may replace the following bulbs by yourself. The difficulty level of
replacement varies depending on the bulb. If necessary bulb replacement
seems difficult to perform, contact your Lexus dealer.
For more information about replacing other light bulbs, contact your Lexus
dealer.
■ Preparing for light bulb replacement
Check the wattage of the light bulb to be replaced. (  P. 8 0 9 )
■ Removing the engine compartment covers
 P. 6 5 5
■ Turning off the power back door main switch
 P. 7 7
■ Front bulb locations
Vehicles with halogen headlights Headlight high beamHeadlight low beam
Front turn signal light

7094-3. Do-it-yourself maintenance
4
Maintenance and care Vehicles with discharge headlights
Vehicles with LED headlights Front turn signal light Headlight high beam
Front turn signal light Headlight high beam

7104-3. Do-it-yourself maintenance
Replacing light bulbs
■ Headlight high beams (except vehicles with LED headlights)
Unplug the connector while
depressing the lock release.■ Rear bulb locations
Rear turn signal lightBack-up light
Rear side marker light Tail light
Tail light
STEP 1