2015 LEXUS RX450h fuse

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.

7154-3. Do-it-yourself maintenance
4
Maintenance and care ■ Front turn signal light (left side)
Move the fuse box.
Vehicles with LED headlights:
Unplug the connector while
depressing the lock release.
Turn the bulb base counterclock-
wise.
Remove the light bulb.STEP 1
STEP 2
STEP 3
STEP 4

5
When trouble arises
7775-2. Steps to take in an emergency
If the hybrid system will not start Reasons for the hybrid system not starting vary depending on the situation.
Check the following and perform the appropriate procedure:
■ The hybrid system will not start even though the correct starting
procedure is being followed. (  P. 1 7 7 )
One of the following may be the cause of the problem:
● The electronic key may not be functioning properly. (  P. 7 8 2 )
● There may be a malfunction in the immobilizer system. (  P. 1 2 4 )
● There may be a malfunction in the steering lock system.
● The hybrid system may be malfunc tioning due to an electrical
problem such as an open circ uit or a blown fuse. However,
depending on the type of malfunc tion, an interim measure is avail-
able to start the hybrid system. (  P. 7 7 8 )
■ The interior lights and headlights are dim, or the horn does not
sound or sounds at a low volume.
One of the following may be the cause of the problem:
● The 12-volt battery may be discharged. (  P. 7 8 4 )
● The 12-volt battery terminal co nnections may be loose or cor-
roded.
■ The interior lights and headlights do not turn on, or the horn does
not sound.
One of the following may be the cause of the problem:
● One or both of the 12-volt battery terminals may be discon-
nected.
● The 12-volt battery may be discharged. (  P. 7 8 4 )
Contact your Lexus dealer if the problem cannot be repaired, or if
repair procedures are unknown.

7845-2. Steps to take in an emergency
If the vehicle 12-volt battery is discharged The following procedures may be used to start the hybrid system if the vehi-
cle’s 12-volt battery is discharged.
You can also call your Lexus dealer or a qualified repair shop.
If you have a set of jumper (or booster) cables and a second vehicle
with a 12-volt battery, you can jump start your vehicle by following the
steps below.
Open the hood and remove the engine compartment covers.
(  P. 655)
Remove the fuse box cover and open the exclusive jump start-
ing terminal cover.
Connect the jumper cables according to the following procedure:
Connect a positive jumper cable clam p to the exclusive jump start-
ing terminal on your vehicle
Connect a positive jumper cable cl amp to the positive (+) battery
terminal on the second vehicle
Connect a negative cable clamp to the negative (-) battery terminal
on the second vehicle
Connect the clamp at the other end of the negative cable to a solid,
stationary, unpainted metallic point away from the exclusive jump
starting terminal and any moving part s, as shown in the illustration.STEP 1
STEP 2
STEP 3

8376
Vehicle specifications 6-3. Initialization
Items to initialize Item When to initialize Reference
Power back door • After reconnecting or changing the
12-volt battery
• After changing a fuse P. 7 5
Maintenance data
(U.S.A. only) After the maintenance is performed P. 6 4 1
Tire pressure warning
system • When rotating the tires
• When changing tire pressure (such
as when changing traveling speed,
load weight, etc.)
• When changing the tire size P. 6 7 1The following items must be initialized for normal system operation in cases
such as after the 12-volt battery is reconnected, or maintenance is per-
formed on the vehicle.

865Alphabetical index
Fuel
Capacity................................................ 800
Fuel gauge .............................................. 197
Information............................................. 810
Refueling ....................................................119
Type........................................................... 810
Fuel consumption.....................................45
Fuel door..................................................... 119
Fuel filler door........................................... 119
Fuses.......................................................... 689
Garage door opener............................ 616
Gauges....................................................... 197
Glove box ............................................... 586
Hands-free system for
mobile phone* ........................ 429, 547
Hazard lights
Switch ......................................................724
Head restraints
Adjustment ..............................................97
Headlight aim .........................................706
Headlight cleaner .................................. 231
Headlights
Discharge headlight
precautions ........................................ 722
Replacing light bulbs ....................... 708
Switch ........................................................ 217
Wattage ................................................ 809
Head-up display
Display contrast adjustment
switch ..................................................... 212
Display position adjustment
switch ..................................................... 212
Head-up display main switch ....... 212 Heaters
Seat heaters ......................................... 605
Side mirrors* ....................................... 358
Steering wheel.................................... 604
Hill-start assist control ........................ 276
Hood ........................................................... 651
Hooks
Cargo ........................................................612
Coat......................................................... 608
Horn ............................................................ 196
HUD
Display contrast adjustment
switch...................................................... 212
Display position adjustment
switch...................................................... 212
Head-up display main switch ........212
Hybrid system
Emergency shut off system.............. 35
Energy monitor/consumption
screen...................................................... 39
High voltage components ............... 34
Hybrid system indicator .................. 201
“POWER” switch................................. 177
Vehicle Proximity Notification
System.......................................................31
Hybrid transmission
Hybrid transmission........................... 186
If the shift lever cannot be
shifted from P ................................... 779
S mode ..................................................... 190G
H
*: For vehicles with a navigation system, refer to the “Navigation System Owner’s Manual”.