2018 Lexus LC500 water pump

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1-3. Hybrid system
There are air intake vents under the
rear seats for the purpose of cooling
the hybrid battery (traction battery). If
the vents become blocked, the hybrid
battery input and output may be
restricted, leading to a reduction in
hybrid battery (traction battery) out-
put.
When a certain level of impact is
detected by the impact sensor, the
emergency shut off system blocks the
high voltage current and stops the fuel
pump to minimize the risk of electrocu-
tion and fuel leakage. If the emergency
shut off system activates, your vehicle
will not restart. To restart the hybrid
system, contact any authorized Lexus
retailer or Lexus authorized repairer,
or any reliable repairer.
A message is automatically displayed
when a malfunction occurs in the
hybrid system or an improper opera-
tion is attempted.
If a warning message is shown on the
multi-information display, read the
NOTICE
■Hybrid battery (traction battery)
Do not carry large amounts of water
such as water cooler bottles in the vehi- cle. If water spills onto the hybrid battery (traction battery), the battery may be
damaged. Have the vehicle inspected by any authorized Lexu s retailer or Lexus authorized repairer, or any reliable
repairer.
Hybrid battery (traction bat-
tery) air intake vents
NOTICE
■Hybrid battery (traction battery) air intake vents
●Make sure not to block the air intake vents with anything, such as a seat cover, plastic cover, or luggage. If the
vents become blocked, the hybrid bat- tery (traction battery) input and output may be restricted, leading to a reduc-
tion in hybrid battery (traction battery) output and a malfunction.
●When dust etc. has accumulated in the air intake vents, periodically clean
them with a vacuum cleaner to prevent the vents from clogging.
●Filters are installed to the air intake vents. When the filters remain notice-
ably dirty even after cleaning the air intake vents, filter cleaning or replace-ment is recommended. When clean-
ing or replacing the filters, contact any authorized Lexus retailer or Lexus authorized repairer, or any reliable
repairer. Refer to P.309 for details on how to clean the filters.
●Do not get water or foreign materials
in the air intake vents as this may cause a short circuit and damage the hybrid battery (traction battery).
Emergency shut off system
Hybrid warning message

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4-3. Operating the lights and wipers
■Door opening linked windshield wiper stop function
When AUTO is selected and the wind- shield wipers are operating, if a door is opened, the operation of the windshield
wipers will be stopped to prevent anyone near the vehicle from being sprayed by water from the wipers, provided the vehicle
is stopped. When the door is closed, wiper operation will resume.
■To protect the windshield wipers
If movement of the windshield wipers is largely restricted by a foreign object such as snow, the operation of the windshield wip-
ers may be stopped automatically to pro- tect the windshield wipers. In this case, turn the windshield wiper switch off and remove
the foreign object, and then use the wind- shield wipers.
■When stopping the engine tem> in an emergency while driving
If the windshield wipe rs 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 engine switch is turned to IGNITION ON mode , or
operation will stop when the driver’s door is opened.
■Customization
The rain-sensing operation setting can be changed. (Customizable features: P.423)
When the windshield wipers are not
being used, they retract to below the
hood. To enable the windshield wipers
to be lifted when parking in cold condi-
tions or when replacing a windshield
wiper insert, change th e rest position of
the windshield wipers to the service
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
AU TO mod e . T ak e c are t ha t you r fin ge rs 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 any authorized
Lexus retailer or Lexus authorized repairer, or any reliable repairer. Do not try to clear it with a pin or other
object. The nozzle will be damaged.
Changing the windshield wiper
rest position/Lifting the wind-
shield wipers

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6-3. Do-it-yourself maintenance
Maintenance and care
■Power control unit coolant reser-
voir (LC500h)
Reservoir cap
“F”/“FULL” line
“L”/“LOW” line
If the level is on or below the “L”/“LOW”
line, add coolant up to the “F”/“FULL” line.
( P.403)
■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.
“Toyota Super Long Life Coolant” is a mix-
ture of 50% coolant and 50% deionized water. (Minimum temperature: -35°C [-31°F])
For more details about coolant, contact any authorized Lexus retailer or Lexus autho-
rized repairer, or any reliable repairer.
■If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine/power control unit coolant reservoir caps, drain cock and water pump.
If you cannot find a leak, have any autho- rized Lexus retailer or Lexus authorized repairer, or any reliable repairer, test the
cap and check for leaks in the cooling sys- tem.
Check the radiator and condenser and
clear away any foreign objects.
If either of the above parts is extremely
dirty or you are not sure of their condi-
tion, have your vehicle inspected by
any authorized Lexus retailer or Lexus
authorized repairer, or any reliable
repairer.
A
B
C
WARNING
■When the engine is hot
LC500: Do not remove the engine cool- ant reservoir cap or the coolant inlet cap. ( P.402)
The cooling system may be under pres- sure and may spray hot coolant if the cap is removed, causing serious injuries, such
as burns.
LC500h: Do not remove the
engine/power control unit coolant reser- voir caps or the coolant inlet cap. ( P.406)
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 damaging parts or paint.
Checking the radiator and con-
denser

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6-3. Do-it-yourself maintenance
If any washer does not work or “Wind-
shield Washer Fluid Low” is shown on
the multi-information display, the
washer tank may be empty. Add
washer fluid.
LC500
LC500h
WARNING
■When the engine is hot
Do not touch the radiator and condenser as they may be hot and cause serious injuries, such as burns.
Checking and 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.