2018 LEXUS LS500H fuse

4 TABLE OF CONTENTS
LS500h_OM_OM50F42U_(U) 5-5. Using the storage features
List of storage features............... 343
Trunk features................................ 348
5-6. Using the other interior features
Other interior features ............... 351
Garage door opener.................. 358
Lexus Enform Safety Connect
........................................................... 364
6-1. Maintenance and care
Cleaning and protecting the vehi-
cle exterior ................................... 370
Cleaning and protecting the vehi-
cle interior .................................... 373
6-2. Maintenance
Maintenance requirements ..... 378
General maintenance ................ 379
Emission inspection and mainte-
nance (I/M) programs ............ 382
6-3. Do-it-yourself maintenance
Do-it-yourself service precautions
........................................................... 383
Hood.................................................. 385
Positioning a floor jack............... 385
Engine compartment.................. 387
12-volt battery................................ 393
Tires ................................................... 395
Replacing the tire ......................... 405
Tire inflation pressure ................. 408
Wheels............................................... 410
Air conditioning filter.................... 411
Electronic key battery ................. 413
Checking and replacing fuses
............................................................ 414 Light bulbs......................................... 417
7-1. Essential information
Emergency flashers .................... 420
If your vehicle has to be stopped in
an emergency ............................ 420
7-2. Steps to take in an emergency
If your vehicle needs to be towed
........................................................... 422
If you think something is wrong
.......................................................... 426
If a warning light turns on or a warn-
ing buzzer sounds...................... 427
If a warning messa ge is displayed
.......................................................... 437
If you have a flat tire ..................... 442
If the hybrid syst em will not start
.......................................................... 443
If you lose your keys.................... 444
If the fuel filler door cannot be
opened .......................................... 445
If the electronic key does not oper-
ate properly ................................. 445
If the 12-volt battery is discharged
.......................................................... 447
If your vehicle overheats ........... 453
If the vehicle becomes stuck ... 457
8-1. Specifications
Maintenance data (fuel, oil level,
etc.) ................................................. 460
Fuel information
. ........................... 470
Tire information ............................. 4726
Maintenance and care 7
When trouble arises
8
Vehicle specifications

354 5-6. Using the other interior features
LS500h_OM_OM50F42U_(U) ■
The power outlet can be used when●
12 V
The power switch is in ACCESSORY or
ON mode. ●
120 VAC
The power switch is in ON mode.
1 To set the visor in the forward posi-
tion, flip it down.
2 To set the visor in the side position,
flip down, unhook, and swing it to
the side.
3 To use the side extender, place the
visor in the side position, then slide
it backward. 
Front
Slide the cover to open. The vanity light turns on.NOTICE■
To avoid damaging the power outlet
Close the power outlet lid when the
power outlet is not in use.
Foreign objects or liquids that enter the
power outlet may cause a short circuit. ■
To prevent the fuse from being blown●
12 V
Do not use an accessory that uses more
than 12 V 10 A.
●
120 VAC
Do not use a 120 VAC appliance that
requires more than 100 W. If a 120 VAC
appliance that consumes more than 100
W is used, the protection circuit will cut
the power supply.
■
To prevent 12-volt battery discharge
Do not use the power outlet longer than
necessary when the hy brid system is off. ■
Appliances that may not operate
properly (120 VAC)
The following 120 VAC appliances may
not operate properly even if their power
consumption is under 100 W. ●
Appliances with high initial peak watt-
age ●
Measuring devices that process pre-
cise data ●
Other appliances that require an
extremely stable power supply
Sun visors
Vanity mirrors

369
LS500h_OM_OM50F42U_(U) 6 6
Maintenance and care Maintenance and care .
6-1. Maintenance and care
Cleaning and protecting the vehi-
cle exterior ................................ 370
Cleaning and protecting the vehi-
cle interior ................................. 373
6-2. Maintenance
Maintenance requirements
........................................................ 378
General maintenance ............. 379
Emission inspection and mainte-
nance (I/M) programs ......... 382
6-3. Do-it-yourself maintenance
Do-it-yourself service precautions
........................................................ 383
Hood............................................... 385
Positioning a floor jack............ 385
Engine compartment............... 387
12-volt battery............................. 393
Tires ................................................ 395
Replacing the tire ...................... 405
Tire inflation pressure .............. 408
Wheels............................................ 410
Air conditioning filter................. 411
Electronic key battery .............. 413
Checking and replacing fuses
......................................................... 414
Light bulbs ..................................... 417

3836-3. Do-it-yourself maintenance
LS500h_OM_OM50F42U_(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
12-volt battery
condition
( → P.393) •Grease
• Conventional
wrench (for terminal
clamp bolts)
Brake fluid level
( → P.391) • 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/power
control unit cool-
ant level
( → P.390) •“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.388) •“Toyota Genuine
Motor Oil” or equiv-
alent
• Rag or paper towel
•Funnel (used only for
adding engine oil)
Fuses ( → P.414) •Fuse with same
amperage rating as
original
Radiator and con-
denser ( → P.391) ⎯Items Parts and tools

3876-3. Do-it-yourself maintenance
LS500h_OM_OM50F42U_(U) 6
Maintenance and care
Engine oil level dipstick ( → P.388)
Power control unit coolant reservoir ( → P.390)
Engine coolant reservoir ( → P.390)
Engine oil filler cap ( → P.389)
Brake fluid reservoir ( → P.391)
Fuse boxes ( → P.414)
Washer fluid tank ( → P.392)
Engine coolant radiator ( → P.391)
Power control unit coolant radiator ( → P.391)
Electric cooling fan
Condenser ( → P.391)■
12-volt battery
→ P.393Engine compartment
Components
A
B
C
D
E
F
G
H
I
J
K

414 6-3. Do-it-yourself maintenance
LS500h_OM_OM50F42U_(U) 1 Turn the power switch off.
2 Open the fuse box cover. 
Engine compartment: type A fuse
box Push the tabs in and lift the lid off.

Engine compartment: type B fuse
box Remove the engine compartment cover
( → P.388) and push the ta bs in and lift the
lid off.WARNING■
Removed battery and other parts
These parts are small and if swallowed by
a child, they can cause choking. Keep
away from children. Failure to do so
could result in death or serious injury.
NOTICE■
When replacing the battery
Use a flathead screwdriver of appropri-
ate size. Applying excessive force may
deform or damage the cover. ■
For normal operation after replacing
the battery
Observe the following precautions to
prevent accidents: ●
Always work with dry hands.
Moisture may cause the battery to
rust.●
Do not touch or move any other com-
ponent inside the remote control.●
Do not bend either of the battery ter-
minals. 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

4156-3. Do-it-yourself maintenance
LS500h_OM_OM50F42U_(U) 6
Maintenance and care 
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.348)
Push the tab in and lift the lid off. 3 Remove the fuse with the pullout
tool.
Only type A fuse can be removed
using the pullout tool.
4 Check if the fuse is blown. Type A and B:
Replace the blown fuse with a new fuse of
an appropriate amperage rating. The
amperage rating can be found on the fuse
box lid.
Type C and D:
Contact your Lexus dealer.

416 6-3. Do-it-yourself maintenance
LS500h_OM_OM50F42U_(U) 
Type A
Normal fuse
Blown fuse 
Type B
Normal fuse
Blown fuse 
Type C
Normal fuse
Blown fuse 
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.A
B
A
B
A
B 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