2020 LEXUS LS500H water pump

4TABLE OF CONTENTS
5-6. Using the other interior featuresOther interior features .............. 346
Garage door opener.................. 354
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 .............................................. 385
Tires ................................................... 387
Replacing the tire ......................... 395
Tire inflation pressure ................. 399
Wheels.............................................. 400
Air conditioning filter..................402
Electronic key battery ................ 403
Checking and replacing fuses ........................................................... 405
Light bulbs ....................................... 4087-1. Essential information
Emergency flashers ..................... 410
If your vehicle has to be stopped in an emergency ............................. 410
If the vehicle is trapped in rising water ................................................. 411
7-2. Steps to take in an emergency If your vehicle needs to be towed............................................................ 413
If you think something is wrong ............................................................ 417
Fuel pump shut off system ......... 418
If a warning light turns on or a warn- ing buzzer sounds...................... 419
If a warning messa ge is displayed
.......................................................... 429
If you have a flat tire .................... 433
If the engine will not start .......... 434
If you lose your keys.................... 436
If the fuel filler door cannot be opened .......................................... 436
If the electronic key does not oper- ate properly ................................. 437
If the vehicle battery is discharged .......................................................... 439
If your vehicle overheats ........... 444
If the vehicle becomes stuck ... 447
8-1. Specifications Maintenance data (fuel, oil level, etc.) ................................................. 450
Fuel information............................ 459
6Maintenance and care
7When trouble arises
8Vehicle specifications

1874-3. Operating the lights and wipers
4
Driving
●If the wiper is turned to AUTO mode
while the engine switch is in IGNITION
ON mode, the wipers will operate once
to show that AUTO mode is activated.
●If the temperature of the raindrop sensor
is 185°F (85°C) or higher, or 5°F
(-15°C) or lower, automatic operation
may not occur. In this case, operate the
wipers in any mode other than AUTO
mode.
■If no windshield washer fluid sprays
Check that the washer nozzles are not
blocked if there is washer fluid in the wind-
shield washer fluid reservoir.
■Front door opening linked windshield
wiper stop function
When is selected and the windshield
wipers are operating, if a front door is
opened while the vehicle is stopped and the
P shift position is selected, operation of the
windshield wipers w ill be stopped to pre-
vent anyone near the vehicle from being
sprayed by water from the wipers. When
the front door is closed, wiper operation will
resume.
■When stopping the engine in an emer-
gency while driving
If the windshield wipers are operating when
the engine is stopped, the windshield wipers
will operate in high speed operation. After
the vehicle is stopped, operation will return
to normal when the engi ne switch is turned to IGNITION ON mode, or operation will
stop when the driver’s door is opened.
■Outside rear view mirror defogger acti-
vation linked to windshield wiper opera-
tion
The outside rear view mirror defoggers
automatically turn on when you operate the
windshield wipers.
The outside rear view mirror defoggers
automatically turn off approximately 15
minutes after the wipers stop.
For details about the outside rear view mir-
ror defoggers: P.318
WARNING
■Caution regarding the use of wind-
shield wipers in AUTO mode
The windshield wipers may operate
unexpectedly if the sensor is touched or
the windshield is subject to vibration in
AUTO mode. Take care that your fingers
or anything else do not become caught
in the windshield wipers.
■Caution regarding the use of washer
fluid
When it is cold, do not use the washer
fluid until the windshield becomes warm.
The fluid may freeze on the windshield
and cause low visibility. This may lead to
an accident, resulting in death or serious
injury.
NOTICE
■When there is no washer fluid spray
from the nozzle
Damage to the washer fluid pump may
be caused if the lever is pulled toward
you and held continually.
■When a nozzle becomes blocked
In this case, contact your Lexus dealer.
Do not try to clear it with a pin or other
object. The nozzle will be damaged.

3836-3. Do-it-yourself maintenance
6
Maintenance and care
your Lexus dealer.
■If the coolant level drops within a short
time of replenishing
Visually check the radiator, hoses, engine
coolant reservoir caps, drain cock and
water pump.
If you cannot find a leak, have your Lexus
dealer test the cap and check for leaks in
the cooling system.
Check the radiator, condenser, inter-
cooler radiator and intercooler sub
radiator and clear away any foreign
objects. If either of the above parts is
extremely dirty or you are not sure of their condition, have your vehicle
inspected by your Lexus dealer.
■Checking fluid level
The brake fluid level should be
between the “MAX” and “MIN” lines
on the tank.
■Adding fluid
Make sure to check the fluid type and
prepare the necessary item.
 Fluid type
FMVSS No.116 DOT 3 or SAE J1703
brake fluid
FMVSS No.116 DOT 4 or SAE J1704
brake fluid
Item
Clean funnel
■Brake fluid can absorb moisture from
the air
Excess moisture in the brake fluid can cause
WARNING
■When the engine is hot
Do not remove the engine coolant reser-
voir cap, the intercooler coolant reser-
voir cap and the coolant inlet cap.
(  P.446)
The cooling system may be under pres-
sure and may spray hot coolant if the cap
is removed, causing serious injuries, such
as burns.
NOTICE
■When adding coolant
Coolant is neither plain water nor
straight antifreeze. The correct mixture
of water and antifreeze must be used to
provide proper lubrication, corrosion
protection and cooling. Be sure to read
the antifreeze or coolant label.
■If you spill coolant
Be sure to wash it off with water to pre-
vent it from damagi ng parts or paint.
Checking the radiator, con-
denser, intercooler radiator (if
equipped) and intercooler sub
radiator (if equipped)
WARNING
■When the engine is hot
Do not touch the radiator, condenser,
intercooler radiator or intercooler sub
radiator as they may be hot and cause
serious injuries, such as burns.
Checking and adding the brake
fluid

3846-3. Do-it-yourself maintenance
a dangerous loss of braking efficiency. Use
only newly opened brake fluid.
If any washer does not work or the
warning message appears on the
multi-information display, the washer
tank may be empty. Add washer fluid.
WARNING
■When filling the reservoir
Take care as brake fluid can harm your
hands and eyes and damage painted sur-
faces.
If fluid gets on your hands or in your eyes,
flush the affected area with clean water
immediately.
If you still experience discomfort, see a
doctor.
NOTICE
■If the fluid level is low or high
It is normal for the brake fluid level to go
down slightly as the brake pads wear out
or when the fluid level in the accumulator
is high.
If the reservoir need s frequent refilling,
there may be a serious problem.
Adding the washer fluid
WARNING
■When adding washer fluid
Do not add washer fluid when the engine
is hot or running as washer fluid contains
alcohol and may catch fire if spilled on
the engine, etc.
NOTICE
■Do not use any fluid other than
washer fluid
Do not use soapy water or engine anti-
freeze instead of washer fluid.
Doing so may cause streaking on the
vehicle’s painted surfaces, as well as
damaging the pump leading to problems
of the washer fluid not spraying.
■Diluting washer fluid
Dilute washer fluid with water as neces-
sary.
Refer to the freezing temperatures listed
on the label of the washer fluid bottle.

409
7
7
When trouble arises
When trouble arises
.7-1. Essential informationEmergency flashers................... 410
If your vehicle has to be stopped in an emergency ........................... 410
If the vehicle is trapped in rising water.............................................. 411
7-2. Steps to take in an emergency If your vehicle needs to be towed......................................................... 413
If you think something is wrong ......................................................... 417
Fuel pump shut off system ...... 418
If a warning light turns on or a warning buzzer sounds ........ 419
If a warning message is displayed ........................................................ 429
If you have a flat tire.................. 433
If the engine wi ll not start .......434
If you lose your keys ................. 436
If the fuel filler door cannot be opened........................................ 436
If the electronic key does not operate properly .................... 437
If the vehicle battery is discharged ........................................................ 439
If your vehicle overheats ........ 444
If the vehicle becomes stuck ........................................................ 447

502Alphabetical Index
If a warning message is displayed..... 429
If the battery is discharged .................... 439
If the electronic key does not operate properly....................................................... 437
If the engine will not start ....................... 434
If the fuel filler door cannot be opened ......................................................................... 436
If the vehicle is trapped in rising water411
If you have a flat tire .................................. 433
If you lose your keys................................. 436
If you think something is wrong ........... 417
If your vehicle becomes stuck............. 447
If your vehicle has to be stopped in an
emergency ................................................. 410
If your vehicle needs to be towed ....... 413
If your vehicle overheats ........................ 444
Engine ACCESSORY mode .............................. 168
Compartment ..............................................377
Engine compartment cover ................. 378
Engine switch................................................ 165
Fuel pump shut off system ..................... 418
Hood................................................................ 375
How to start the engine........................... 165
Identification number .................................451
If the engine will not start ....................... 434
If your vehicle has to be stopped in an
emergency ................................................. 410
Ignition switch (engine switch) ............ 165
Overheating................................................. 444
Tachometer ............................................. 73, 76
Engine compartment cover .................... 378
Engine coolant Capacity ......................................................... 453
Checking ....................................................... 382
Preparing and checking before winter.........................................................................303
Engine coolant temperature gauge 73, 76
Engine immobilizer system ........................ 63
Engine oil Capacity ......................................................... 452
Checking ...................................................... 380 Preparing and checking before winter
......................................................................... 303
Warning light ...............................................420
Engine oil maintenance data ................... 381
Engine switch ..................................................165 Auto power off function........................... 168
Changing the engine switch modes . 168
If your vehicle has to be stopped in an emergency .................................................. 410
EPS (Electric Power Steering) .............. 298 Warning light ............................................... 422
Event data recorder (E DR) ............................7
F
FCTA (Front Cross Traffic Alert) ......... 223
First-aid kit storage belt ............................ 344
Flat tire
Tire pressure warning system ............ 389
Floor mats ...........................................................22
Fluid Automatic transmission ..........................454
Brake ............................................................... 455
Washer .......................................................... 384
Footwell light ................................................. 334
Front automatic air conditioning system ............................................................................ 317
Front Cross Traffic Alert (FCTA) ......... 223
Front passenger occupant classification system .............................................................. 39
Front seats Adjustment ....................................................... 119
Cleaning ........................................................ 365
Correct driving posture ............................ 23
Driving position memory ........................ 130
Head restraints............................................. 135
Memory recall function............................ 133
Power easy access system .................... 130
Refresh system ..............................................124
Seat heaters ................................................. 330
Seat position memory .............................. 130
Seat ventilators ........................................... 330