2018 LEXUS LS500 fuses

4 TABLE OF CONTENTS
LS500_OM_OM50F54U_(U) 5-6. Using the other interior features
Other interior features .............. 342
Garage door opener.................. 349
Lexus Enform Safety Connect
........................................................... 355
6-1. Maintenance and care
Cleaning and protecting the vehi-
cle exterior ................................... 362
Cleaning and protecting the vehi-
cle interior .................................... 365
6-2. Maintenance
Maintenance requirements ..... 368
General maintenance ................ 369
Emission inspection and mainte-
nance (I/M) programs ............ 372
6-3. Do-it-yourself maintenance
Do-it-yourself service precautions
........................................................... 373
Hood.................................................. 375
Positioning a floor jack............... 375
Engine compartment.................. 377
Battery .............................................. 384
Tires ................................................... 386
Replacing the tire ......................... 396
Tire inflation pressure ................. 399
Wheels............................................... 401
Air conditioning filter.................. 402
Electronic key battery ................ 403
Checking and replacing fuses
........................................................... 405
Light bulbs ....................................... 408 7-1. Essential information
Emergency flashers ..................... 410
If your vehicle has to be stopped in
an emergency ............................. 410
7-2. Steps to take in an emergency
If your vehicle needs to be towed
............................................................ 412
If you think something is wrong
........................................................... 416
Fuel pump shut off system .......... 417
If a warning light turns on or a warn-
ing buzzer sounds...................... 418
If a warning messa ge is displayed
.......................................................... 428
If you have a flat tire .................... 432
If the engine will not start .......... 433
If you lose your keys.................... 435
If the fuel filler door cannot be
opened .......................................... 435
If the electronic key does not oper-
ate properly ................................. 436
If the vehicle battery is discharged
.......................................................... 438
If your vehicle overheats ........... 443
If the vehicle becomes stuck ... 446
8-1. Specifications
Maintenance data (fuel, oil level,
etc.) ................................................. 448
Fuel information............................ 457
Tire information ............................ 4596
Maintenance and care 7
When trouble arises
8
Vehicle specifications

361
LS500_OM_OM50F54U_(U) 6 6
Maintenance and care Maintenance and care .
6-1. Maintenance and care
Cleaning and protecting the vehi-
cle exterior ................................ 362
Cleaning and protecting the vehi-
cle interior ................................. 365
6-2. Maintenance
Maintenance requirements
........................................................ 368
General maintenance ............. 369
Emission inspection and mainte-
nance (I/M) programs ......... 372
6-3. Do-it-yourself maintenance
Do-it-yourself service precautions
........................................................ 373
Hood............................................... 375
Positioning a floor jack............ 375
Engine compartment............... 377
Battery ........................................... 384
Tires ................................................ 386
Replacing the tire ...................... 396
Tire inflation pressure .............. 399
Wheels............................................ 401
Air conditioning filter............... 402
Electronic key battery ............. 403
Checking and replacing fuses
........................................................ 405
Light bulbs .................................... 408

3736-3. Do-it-yourself maintenance
LS500_OM_OM50F54U_(U) 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 Items Parts and tools
Battery condition
( → P.384) •Grease
• Conventional
wrench (for terminal
clamp bolts)
Brake fluid level
( → P.383) • FMVSS No.116 DOT
3 or SAE J1703
brake fluid
FMVSS No.116 DOT
4 or SAE J1704
brake fluid
•Rag or paper towel
• Funnel (used only for
adding brake fluid) Engine/inter-
cooler coolant
level ( → P.381) •“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 coolant)
Engine oil level
( → P.379) •“Toyota Genuine
Motor Oil” or equiv-
alent
• Rag or paper towel
•Funnel (used only for
adding engine oil)
Fuses ( → P.405) •Fuse with same
amperage rating as
original
Radiator, con-
denser, inter-
cooler radiator
and intercooler
sub radiator
( → P.382) ⎯Items Parts and tools

4056-3. Do-it-yourself maintenance
LS500_OM_OM50F54U_(U) 6
Maintenance and care 1 Turn the engine switch off.
2 Open the fuse box cover. 
Engine compartment: type A fuse
box Remove the service cover ( → P.379) and
push the tabs in and lift the lid off.

Engine compartment: type B fuse
box Remove the engine compartment cover
( → P.378) and push the ta bs in and lift the
lid off. 
Driver’s side instrument panel Push the tab in and remove the lid.
Make sure to push the tab in during
removal or installation.

Passenger’s side instrument panel Push the tab in and remove the lid.
Make sure to push the tab in during
removal or installation.

Trunk Remove the luggage mat. ( → P.339)
Push the tab in and lift the lid off.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

4076-3. Do-it-yourself maintenance
LS500_OM_OM50F54U_(U) 6
Maintenance and care 
Type D
Normal fuse
Blown fuse ■
After a fuse is replaced●
When installing the lid, make sure that the
tab is installed securely.●
If the lights do not turn on even after the
fuse has been replaced, a bulb may need
replacement.●
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.
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. A
B NOTICE■
Before replacing fuses
Have the cause of electrical overload
determined and repaired by your Lexus
dealer as soon as possible.

5011-1. What to do if... (Troubleshooting)
LS500_OM_OM50F54U_(U) 501Alphabetical Index
Fuel
Capacity ......................................................... 449
Fuel gauge ...............................................69, 72
Fuel pump shut off system ...................... 417
Information .................................................... 457
Refueling ......................................................... 185
Type.................................................................. 449
Warning light ................................................. 421
Fuel consumption
Average fuel economy .............................. 78
Current fuel consumption........................ 78
Fuel filler door
If the fuel filler door cannot be opened
......................................................................... 435
Refueling ......................................................... 185
Fuel gauge ................................................. 69, 72
Fuel pump shut off system.......................... 417
Fuses ................................................................. 405
G
Garage door opener ................................. 349
Gauges ....................................................... 69, 72
Gear Position................................................... 80
G-force............................................................... 80
Glove box ....................................................... 335
Glove box light ............................................. 336
H
Hands Free Power Trunk Lid .................. 103
Head restraints ...............................................132
Headlights
Adaptive Front-lighting System (AFS)
........................................................................... 177
Automatic High Beam system..............178
Light switch ..................................................... 175
Replacing light bulbs............................... 408
Head-up display.............................................. 83
Driving information display area........... 83
Driving support system display area .. 86
Eco Driving Indicator ................................. 87
HUD (Head-up display) switch............85 Navigation system-linked display ........83
Pop-up display ...............................................86
Settings...............................................................85
Heated steering wheel .............................. 326
Heaters
Front air conditioning system ............... 313
Heated steering wheel ............................326
Outside rear view mirrors.......................314
Rear air conditioning system ............... 323
Seat heaters ..................................................326
Height control
Electronically modulated air suspension
.......................................................................... 292
Hill-start assist control ............................... 294
Hood
Open................................................................375
Pop Up Hood.................................................38
Hooks
Coat hooks ...................................................343
Retaining hooks (floor mat) ..................... 22
Horn ....................................................................135
HUD (Head-up display) switch ................ 85
I
I/M test ............................................................ 372
Identification
Engine..............................................................449
Vehicle ........................................................... 448
Ignition switch (engine switch)................ 160
Auto power off function............................162
Changing the engine switch modes ..162
If your vehicle has to be stopped in an
emergency .................................................. 410
Indicators ........................................................... 66
Initialization
Items to initialize .........................................482
Maintenance......................................368, 381
Power windows ........................................... 139
Tire pressure warning system .............392
Inside door handle lights........................... 330
Inside rear view mirror ................................136
Instrument panel light control ............. 71, 75

5051-1. What to do if... (Troubleshooting)
LS500_OM_OM50F54U_(U) 505Alphabetical Index
Operation........................................................139
Window lock switch ....................................141
Pre-Collision System (PCS)
Function ............................................... 200, 210
PCS OFF switch ..............................203, 213
Warning light ............................................... 424
Warning message.............................210, 217 R
Radar cruise control (dynamic radar cruise
control with full-speed range)... 238, 241
Radiator ........................................................... 382
RCD (Rear camera detection) .............. 256
Warning message..................................... 269
RCD (Rear Camera Detection)
Function ..........................................................268
RCTA
Function .......................................................... 264
Warning message..................................... 265
RCTA (Rear Cross Traffic Alert) ......... 256
RCTA function ............................................. 265
Rear air conditioning system .................. 323
Rear Cross Traffic Alert (RCTA) ......... 264
Rear door sunshades ................................. 346
Rear Multi Operation Panel ...................308
Rear seat position memory ........................ 131
Rear seats .........................................................123
Adjustment...................................................... 123
Head restraints ............................................. 132
Rear seat position memory ..................... 131
Relaxation system........................................ 126
Seat heaters .................................................. 326
Seat ventilators............................................ 326
Rear side marker lights
Light switch ..................................................... 175
Replacing light bulbs............................... 408
Rear sunshades ............................................ 347
Rear turn signal lights
Replacing light bulbs............................... 408
Turn signal lever ...........................................169
Rear view mirror
Inside rear view mirror..............................136 Outside rear view mirrors.......................137
Rear window defogger ...............................314
Refueling
Capacity .........................................................449
Fuel types .......................................................449
If the fuel filler do or cannot be opened
..........................................................................435
Opening the fuel tank cap ..................... 185
Remote Touch .............................................. 304
Replacing
Electronic key battery ............................. 403
Fuses................................................................ 405
Light bulbs .................................................... 408
Tires ................................................................. 396
Resetting the message indicating mainte-
nance is required ...................................... 368
Rev indicator .....................................................74
Rev peak..............................................................74
Road Sign Assist .......................................... 238
RSA (Road Sign Assist) ............................ 238
Run-flat tires....................................... 388, 432
S
Seat belt buckle lights ................................ 330
Seat belt reminder light....................421, 422
Seat belts............................................................ 24
Automatic Locking Retractor................. 26
Child restraint system installation ......... 46
Cleaning and maintaining the seat belt
......................................................................... 365
Easy Access Buckle .................................... 26
Emergency Locking Retractor .............. 26
How to wear your seat belt ..................... 25
How your child should wear the seat belt
............................................................................. 25
Pregnant women, proper seat belt use
............................................................................. 24
Reminder light and buzzer ......... 421, 422
Seat belt extender......................................... 25
SRS warning light........................................ 419
Seat heaters ................................................... 326
Seat position memory......................... 127, 131