2018 Lexus LC500 coolant

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6-3. Do-it-yourself maintenance
Maintenance and care
WARNING
The engine compartment contains many mechanisms and fluids that may move suddenly, become hot, or become elec-
trically energized. To avoid death or seri- ous injury, observe the following precautions.
■When working on the engine com-
partment
●LC500h: Make sure that the “IGNI-
TION ON” on the multi-information display and the “READY” indicator are both off.
●Keep hands, clothing and tools away
from the moving fan and engine drive belt.
●LC500: Be careful not to touch the engine, radiator, exhaust manifold, etc.
right after driving as they may be hot. Oil and other fluids may also be hot.LC500h: Be careful not to touch the
engine, power control unit, radiator, exhaust manifold, etc. right after driv-ing as they may be hot. Oil and other
fluids may also be hot.
●Do not leave anything that may burn easily, such as paper and rags, in the engine compartment.
●Do not smoke, cause sparks or expose
an open flame to fuel. Fuel fumes are flammable.
●Take care because brake fluid can harm your hands or eyes and damage
painted surfaces. If fluid gets on your hands or in your eyes, flush the affected area with clean water imme-
diately. If you still experience discomfort, con-sult a doctor.
■When working near the electric cool-ing fan or radiator grille
Be sure the engine switch is off.
With the engine switch in IGNITION ON mode , the electric cooling fan may automatically
start to run if the air conditioning is on and/or the coolant temperature is high. ( P.323)
■Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc. from get-
ting in your eyes.
NOTICE
■If you remove the air cleaner filter
Driving with the air cleaner filter
removed may cause excessive engine wear due to dirt in the air.
■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 or when the fluid level in the accumulator is
high. If the reservoir needs frequent refilling, it may indicate a serious problem.

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6-3. Do-it-yourself maintenance
LC500
Fuse box ( P.350)
Engine oil level dipstick ( P.319)
Engine coolant reservoir ( P.322)
Engine oil filler cap ( P.320)
Washer fluid tank ( P.324)
Electric cooling fan
Condenser ( P.323)
Radiator ( P.323)
For right-hand drive vehicles:
The fuse box is located on the opposite side of the engine compartment.
Engine compartment
Components
A
B
C
D
E
F
G
H

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6-3. Do-it-yourself maintenance
Maintenance and care
LC500h
Engine oil level dipstick ( P.319)
Power control unit coolant reservoir ( P.323)
Engine oil filler cap ( P.320)
Fuse boxes ( P.350)
Washer fluid tank ( P.324)
Engine coolant reservoir ( P.322)
Electric cooling fan
Condenser ( P.323)
Radiator ( P.323)
For right-hand drive vehicles:
One of the fuse boxes is located on the opposite side of the engine compartment.
■12-volt battery
 P.325
With the engine at operating tempera-
ture and turned off, check the oil level
on the dipstick.
A
B
C
D
E
F
G
H
I
Checking and adding the engine
oil

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6-3. Do-it-yourself maintenance
The coolant level is satisfactory if it is
between the “F” and “L” lines on the
reservoir when the engine tem> is cold.
■Engine coolant reservoir
LC500
Reservoir cap
“F” line
“L” line
If the level is on or below the “L” line, add
coolant up to the “F” line. ( P.400)
LC500h
Reservoir cap
“F” line
“L” line
If the level is on or below the “L” line, add
coolant up to the “F” line. ( P.403)
WARNING
●Dispose of used oil and filters only in a safe and acceptable manner. Do not dispose of used oil and filters in house-
hold trash, in sewers or onto the ground. Call any authorized Lexus retailer or
Lexus authorized repairer, or any reli- able repairer, service station or auto parts store for information concerning
recycling or disposal.
●Do not leave used engine oil within the reach of children.
NOTICE
■To prevent serious engine damage
Check the oil level on a regular basis.
■When replacing the engine oil
●Be careful not to spill engine oil on the vehicle components.
●Avoid overfilling, or the engine could
be damaged.
●Check the oil level on the dipstick every time you refill the vehicle.
●Be sure the engine oil filler cap is prop-erly tightened.
Checking the coolant
A
B
C
A
B
C

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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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7-2. Steps to take in an emergency
Fluid leaks under the vehicle.
(Water dripping from the air condi-
tioning after use is normal.)
 Flat-looking tires or uneven tire
wear
 Engine coolant temperature gauge
continually points higher than nor-
mal.
 Changes in exhaust sound
 Excessive tire squeal when corner-
ing
 Strange noises related to the sus-
pension system
 Pinging or other noises related to
the engine
 Engine missing, stumbling or run-
ning roughly
 Appreciable loss of power
 Vehicle pulls heavily to one side
when braking
 Vehicle pulls heavily to one side
when driving on a level road
 Loss of brake effectiveness, spongy
feeling, pedal almost touches the
floor
If you think something is
wrong
If you notice any of the following
symptoms, your vehicle probably
needs adjustment or repair. Con-
tact any authorized Lexus retailer
or Lexus authorized repairer, or any
reliable repairer as soon as possi-
ble.
Visible symptoms
Audible symptoms
Operational symptoms

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7-2. Steps to take in an emergency
When trouble arises
■High coolant temperature warning light (warning buzzer)*
*: This light illuminates on the multi-information display.
■Front passenger detection sensor, seat belt reminder and warning buzzer
●If luggage is placed on a front passenger seat, the front passenger detection sensor may cause the warning light to flash and the warning buzzer to sound even if a passenger is not
sitting in the seat.
●If a cushion is placed on the seat, the sensor may not detect a passenger, and the warning
light may not operate properly.
■If the malfunction indicator lamp comes on while driving
The malfunction indicator lamp w ill come on if the fuel tank becomes completely empty. If
the fuel tank is empty, refuel the vehicle immediately. The malfunction indicator lamp will go off after several trips.
If the malfunction indicator lamp does not go off, contact any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer as soon as possible.
■Electric power steering system warning light (warning buzzer)
When the 12-volt battery charge becomes insufficient or the voltage temporarily drops, the electric power steering system warning lig ht may come on and the warning buzzer may sound.
■Tire pressure warning light
When a malfunction occurs in the tire pressure warning system, the tire pressure warning light blinks to warn the driver. However, if the warning light blinks for 1 minute, and then
remains illuminated, maki ng it difficult to determine whether the warning light is blinking, turn the engine switch fr om off to IGNITION ON mode and check if the warning light blinks.
■When the tire pressure warning light comes on
Carry out the following procedure after the tire temperature has lowered sufficiently.
●Check the tire inflation pressure and adjust to the appropriate level.
●If the warning light does not go out even after several minutes, check that the tire inflation
pressure is at the specified level and carry out initialization. ( P.335)
The warning light may come on again if the above operations are conducted without first
allowing the tire temperature to lower sufficiently.
■The tire pressure warning light may come on due to natural causes
The tire pressure warning light may come on du e to natural causes such as natural air leaks
and tire inflation pressure changes caused by temperature. In this case, adjusting the tire inflation pressure will turn off the warning light (after a few minutes).
Warning
lightWarning light/Details/Actions
Indicates that the engine coolant temperature increases
 Stop and check. (P.400, 403)

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7-2. Steps to take in an emergency
When trouble arises
Power was turned off due to the automatic power off function. Next time when starting the hybrid system, operate the hybrid system for approximately 5 minutes to recharge the 12-volt battery.
■If a message that indicates the need for the shift lever operation is shown
To prevent the shift lever from being operated incorrectly or the vehicle from moving unex- pectedly, a message that requires shifting the shift lever may be shown on the multi-informa-
tion display. In that case, follow the instru ction of the message and shift the shift lever.
■If “Front Camera Unavailable” or “Front Camera Vision Blocked Clean and Demist Windshield” is shown
The following systems may be suspended un til the problem shown in the message is resolved.
●PCS
●LKA
●Dynamic radar cruise cont rol with full-speed range
●Automatic High Beam
■If “Engine Stopped Steering Power Low” (LC500) or “Hybrid System Stopped Steer- ing Power Low” (LC500h) is shown
The steering wheel may become extremely heavy. If the steering wheel becomes heavier than usual when operating, hold firmly and operate using more force than usual.
■If “Warming Up Maximum Vehicle Speed: 110km/h” is shown (LC500h)
The transmission is being warmed up and the ve hicle is unable to be driven over 110 km/h (65 mph). Wait until the transmission warms up.
■If “Stop the vehicle in a safe place Shift to P position” is shown (LC500h)
There may be a malfunction in the hybrid system or the shift position may be shifted to N for a long time. Immediately stop the vehicle and contact any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer.
■If “Oil Maintenance Required Soon” is shown (LC500h)
The engine oil is scheduled to be changed. Check the engine oil, and change if necessary.
After changing the engine oil, the message should be reset. ( P.321)
■If “Engine Oil Level Low Add or Replace” is shown
The engine oil level is low. Check the level of engine oil, and add if necessary. This message
may appear if the vehicle is stopped on a slope. Move the vehicle to a level surface and check to see if the message disappears.
■If a message that indicates the need for referring to Owner’s Manual is shown
●If any of the following messages is shown on the multi-information display, follow the instructions.• “Engine Coolant Temp High” ( P.403, 403)
•“Battery low” ( P.392) • “Transmission Fluid Temp High” ( P.174, 180)
●If any of the following messages is shown on the multi-information display, it may indicate a malfunction. Have the vehicle inspected by any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer immediately.
• “Entry & Start System Malfunction”