2020 LEXUS RX350 fuses

4TABLE OF CONTENTS
6-1. Maintenance and careCleaning and protecting the vehi-cle exterior ................................... 350
Cleaning and protecting the vehi- cle interior .................................... 353
6-2. Maintenance Maintenance requirements ..... 356
General maintenance ................ 357
Emission inspection and mainte- nance (I/M) programs ............ 360
6-3. Do-it-yourself maintenance Do-it-yourself service precautions............................................................ 361
Hood.................................................. 363
Positioning a floor jack............... 363
Engine compartment.................. 365
Tires .................................................... 371
Tire inflation pressure ................. 383
Wheels.............................................. 384
Air conditioning filter..................386
Windshield wiper inserts........... 388
Electronic key battery ................ 389
Checking and replacing fuses ............................................................ 391
Headlight aim................................. 392
Light bulbs ....................................... 394
7-1. Essential information Emergency flashers..................... 404
If your vehicle has to be stopped in an emergency ............................. 404If the vehicle is trapped in rising
water .............................................. 405
7-2. Steps to take in an emergency If your vehicle needs to be towed.......................................................... 407
If you think something is wrong ............................................................. 411
Fuel pump shut off system .......... 412
If a warning light turns on or a warn- ing buzzer sounds....................... 413
If a warning messa ge is displayed
........................................................... 422
If you have a flat tire .................... 426
If the engine will not start .......... 438
If you lose your keys.................... 440
If the fuel filler door cannot be opened .......................................... 440
If the electronic key does not oper- ate properly ................................... 441
If the vehicle battery is discharged .......................................................... 443
If your vehicle overheats ........... 447
If the vehicle becomes stuck ... 449
8-1. Specifications Maintenance data (fuel, oil level, etc.) ................................................. 452
Fuel information............................ 459
Tire information ............................. 461
8-2. Customization Customizable features .............. 470
8-3. Initialization Items to initialize ........................... 483
6Maintenance and care
7When trouble arises
8Vehicle specifications

349
6
6
Maintenance and care
Maintenance and care
.6-1. Maintenance and careCleaning and protecting the vehi-cle exterior ................................ 350
Cleaning and protecting the vehi- cle interior ................................. 353
6-2. Maintenance Maintenance requirements........................................................ 356
General maintenance ............. 357
Emission inspection and mainte- nance (I/M) programs ......... 360
6-3. Do-it-yourself maintenance Do-it-yourself service precautions......................................................... 361
Hood............................................... 363
Positioning a floor jack............ 363
Engine compartment............... 365
Tires ................................................. 371
Tire inflation pressure .............. 383
Wheels........................................... 384
Air conditioning filter...............386
Windshield wiper inserts........ 388
Electronic key battery ............. 389
Checking and replacing fuses ......................................................... 391
Headlight aim.............................. 392
Light bulbs .................................... 394

3616-3. Do-it-yourself maintenance
6
Maintenance and care
6-3.Do-it-yourself maintenance
Do-it-yourself service pre-
cautions
If you perform maintenance by
yourself, be sure to follow the cor-
rect procedure as given in these
sections.
Maintenance
ItemsParts and tools
Battery condition
( P.369)
•Warm water
• Baking soda
•Grease
• Conventional
wrench (for terminal
clamp bolts)
Brake fluid level
( P.368)
• FMVSS No.116 DOT
3 or SAE J1703
brake fluid
•Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine coolant
level ( P.367)
•“Toyota Super Long
Life Coolant” or a
similar high quality
ethylene gly-
col-based non-sili-
cate, non-amine,
non-nitrite and
non-borate coolant
with long-life hybrid
organic acid tech-
nology
For the U.S.A.:
“Toyota Super Long
Life Coolant” is
pre-mixed with 50%
coolant and 50%
deionized water.
For Canada:
“Toyota Super Long
Life Coolant” is
pre-mixed with 55%
coolant and 45%
deionized water.
•Funnel (used only for adding engine cool-
ant)
Engine oil level
( P.365)
•“Toyota Genuine
Motor Oil” or equiv-
alent
• Rag or paper towel
•Funnel (used only for adding engine oil)
Fuses ( P.391)
•Fuse with same
amperage rating as
original
Headlight aim
( P.392)• Phillips-head screw-
driver
ItemsParts and tools

3916-3. Do-it-yourself maintenance
6
Maintenance and care
1Turn the engine switch off.
2 Open the fuse box cover.
Engine compartment
Push the tab in and lift the lid off.
Driver’s side instrument panel
Remove the lid.
3Remove the fuse with the pullout
tool. Only some fuses can be removed
using the pullout tool.
4 Check if the fuse is blown.
Normal fuse
Blown fuse
Replace the blown fuse with a new fuse of
an appropriate amperage rating. The
amperage rating can be found on the fuse
box lid.
Many types of fuse are used on this vehicle.
This illustration shows a common type of
fuse used on this vehicle.
■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.394)
●If the replaced fuse blows again, have the
vehicle inspected by your Lexus dealer.
■If there is an overload in a circuit
The fuses are designed to blow, protecting
the wiring harness from damage.
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.
Checking and replacing fuses
A
B

3926-3. Do-it-yourself maintenance
■When replacing light bulbs
Lexus recommends that you use genuine
Lexus products designed for this vehicle.
Because certain bulbs are connected to cir-
cuits designed to prevent overload,
non-genuine parts or parts not designed for
this vehicle may be unusable.
Vehicles without single-beam head-
lights
Adjustment bolt A
Adjustment bolt B
Vehicles with single-beam head-
lightsAdjustment bolt A
Adjustment bolt B
1 Make sure the vehicle has a full
tank of gasoline and the area
around the headlight is not
deformed.
WARNING
■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 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.
●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.
Headlight aim
Vertical movement adjusting
bolts
Before checking the headlight
aim
A
B
A
B

507Alphabetical Index
FuelCapacity ......................................................... 454
Fuel gauge ....................................................... 75
Fuel pump shut off system ...................... 412
Information ....................................................459
Refueling ........................................................ 202
Type.................................................................. 454
Warning light .................................................416
Fuel consumption Average fuel economy ..............................80
Current fuel consumption........................80
Fuel filler door If the fuel filler door cannot be opened.........................................................................440
Refueling ........................................................ 202
Fuel gauge ..........................................................75
Fuel pump shut off system.......................... 412
Fuses ...................................................................391
G
Garage door opener ................................. 339
Gauges ................................................................75
G-force............................................................... 82
Glove box ........................................................ 318
Glove box light .............................................. 318
Grocery bag hooks .................................... 322
H
Hands Free Power Back Door ............... 104
Head restraints ............................................... 137
Headlight aim ................................................ 392
Headlights Adaptive Front-lighting System (AFS)........................................................................... 192
Automatic High Beam system..............193
Light switch .................................................... 190
Replacing light bulbs................................395
Head-up display.............................................. 86 Driving information display area........... 86
Eco Driving Indicator ................................. 90
HUD (Head-up display) switch............ 87 Navigation system-linked display ........89
Settings.............................................................. 88
Heated steering wheel ............................... 310
Heaters Front automatic air conditioning system..........................................................................296
Heated steering wheel ............................. 310
Outside rear view mirrors.................... 298
Rear automatic air conditioning system
..........................................................................307
Seat heaters ................................................... 310
High mounted stoplight Replacing light bulbs ............................... 395
Hill-start assist control ............................... 278
Hood Open................................................................363
Hooks Cargo hooks................................................ 322
Cargo net hooks ........................................ 322
Coat hooks ...................................................336
Front passenger footwell hooks........ 338
Grocery bag hooks.................................. 322
Retaining hooks (floor mat) ..................... 24
Horn ................................................................... 140
HUD (Head-up display) switch ................ 87
I
I/M test ............................................................ 360
Identification Engine..............................................................453
Vehicle ............................................................452
If your vehicle has to be stopped in an emergency .................................................. 404
Ignition switch (engine switch)................. 176 Auto power off function............................179
Changing the engine switch modes ..179
If your vehicle has to be stopped in an emergency ................................................ 404
Indicators ............................................................72
Initialization Items to initialize ........................................ 483
Maintenance.................................... 356, 367

511Alphabetical Index
Rear side marker lightsLight switch .................................................... 190
Replacing light bulbs................................395
Rear turn signal lights Replacing light bulbs................... 395, 399
Turn signal lever .......................................... 184
Wattage..........................................................458
Rear view mirror Inside rear view mirror................................141
Outside rear view mirrors ...................... 142
Rear window defogger ............................. 298
Rear window wiper.....................................200
Refueling Capacity ......................................................... 454
Fuel types....................................................... 454
If the fuel filler door cannot be opened.........................................................................440
Opening the fuel tank cap .................... 202
Remote Touch .............................................. 290
Replacing Electronic key battery..............................389
Fuses ..................................................................391
Light bulbs..................................................... 394
Tires .................................................................. 426
Resetting the message indicating mainte- nance is required ...................................... 356
Rev indicator .....................................................76
Rev peak.............................................................. 77
Road Sign Assist ...........................................227
RSA (Road Sign Assist) .............................227
S
Seat belt reminder ligh t...............................416
Seat belts............................................................ 26 Automatic Locking Retractor ................ 28
Child restraint system installation ......... 46
Cleaning and maintaining the seat belt.........................................................................353
Emergency Locking Retractor .............. 28
How to wear your seat belt ......................27
How your child should wear the seat belt .............................................................................27 Pregnant women, proper seat belt use
............................................................................. 26
Reminder light and buzzer .................... 416
Seat belt extender......................................... 27
Seat belt pretensioners .............................. 29
SRS warning light.........................................414
Seat heaters .................................................... 310
Seat position memory..................................134
Seat ventilators .............................................. 310
Seating capacity.............................................164
Seats Adjustment ............................................122, 124
Adjustment precautions .................122, 123
Child seats/child restraint system installa-tion .................................................................... 45
Cleaning .........................................................353
Driving position memory .........................134
Folding down the rear seatbacks ........124
Head restraints..............................................137
Power easy access system .....................134
Properly sitting in the seat ........................ 25
Seat heaters ................................................... 310
Seat position memory ...............................134
Seat ventilators ............................................. 310
Sensor Automatic headlight system .................. 190
Automatic High Beam system ............. 193
Inside rear view mirror ............................... 141
Intuitive parking assist .............................. 247
LTA (Lane Tracing Assist) ..................... 218
Parking Support Brake function (rear-crossing vehicles) ...................... 270
Parking Support Brake function (static objects) ........................................................265
Radar sensor ....................................205, 242
Rain-sensing windshield wipers .......... 198
RCTA...............................................................255
Service reminder message ..................... 356
Shift lever Automatic transmission ........................... 180
Shift lever light ................................................313
Side airbags ...................................................... 30