2018 LEXUS LS500 water pump

182 4-3. Operating the lights and wipers
LS500_OM_OM50F54U_(U) ●
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 wash er 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 sele cted, 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.314
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 subj ect 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.

382 6-3. Do-it-yourself maintenance
LS500_OM_OM50F54U_(U) “F” line
“L” lineIf the level is on or below the “L” line, add
coolant up to the “F” line. ( → P.443)■
Intercooler coolant reservoir
The coolant level is satisfactory if it is
between the “F” and “L” lines on the
reservoir when the engine is cold.
Reservoir cap
“F” line
“L” lineIf the level is on or below the “L” line, add
coolant up to the “F” line. ( → P.443)
■
Coolant selection
Only use “Toyota Super Long Life Coolant”
or a similar high quality ethylene glycol
based non-silicate, non-amine, non-nitrite,
and non-borate coolant with long-life
hybrid organic acid technology.
U.S.A.:
“Toyota Super Long Life Coolant” is a mix-
ture of 50% coolant and 50% deionized
water. (Minimum temperature: -31°F
[-35°C])
Canada:
“Toyota Super Long Life Coolant” is a mix-
ture of 55% coolant and 45% deionized
water. (Minimum temperature: -44°F
[-42°C])
For more details about coolant, contact
your Lexus dealer. ■
If the coolant level drops within a short
time of replenishing
Visually check the radi ator, 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 yo u are not sure of
their condition, have your vehicle
inspected by your Lexus dealer.B
C
A
B
C 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.445)
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 neithe r 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 damaging parts or paint.
Checking the radiator, con-
denser, intercooler radiator (if
equipped) and intercooler sub
radiator (if equipped)

384 6-3. Do-it-yourself maintenance
LS500_OM_OM50F54U_(U) The battery is located in the trunk
under the luggage mat.
Removing the luggage mat: → P.339
■
Before recharging
When recharging, the battery produces
hydrogen gas which is flammable and
explosive. Therefore, observe the following
precautions before recharging: ●
If recharging with the battery installed on
the vehicle, be sure to disconnect the
ground cable. ●
Make sure the engine switch on the char-
ger is off when connecting and discon-
necting the charger cables to the battery. ■
After recharging/reconnecting the bat-
tery ●
Unlocking the doors using the smart
access system with pu sh-button start may
not be possible immediately after recon-
necting the battery. If this happens, use
the wireless remote control or the
mechanical key to lo ck/unlock the doors.
●
Start the engine with the engine switch in
ACCESSORY mode. The engine may
not start with the engine switch turned off.
However, the engine will operate nor-
mally from the second attempt.
●
The engine switch mode is recorded by
the vehicle. If the battery is reconnected,
the vehicle will return the engine switch
mode to the status it was in before the 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. Battery
Location