2018 Lexus LC500 tire pressure

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6-3. Do-it-yourself maintenance
WARNING
■When installing the tire
Failure to follow these precautions could cause the wheel nuts to loosen and the tire to fall off, resulting in death or serious
injury.
●Never use oil or grease on the wheel bolts or wheel nuts.Oil and grease may cause the wheel
nuts to be excessively tightened, lead- ing to bolt or disc wheel damage. In addition, the oil or grease can cause
the wheel nuts to loosen and the wheel may fall off, causing a serious accident. Remove any oil or grease from the
wheel bolts or wheel nuts.
●Have the wheel nuts tightened with a torque wrench to 140 N•m (14.3 kgf•m, 103.3 ft•lbf) as soon as possible
after changing wheels.
●Do not attach a heavily damaged wheel ornament, as it may fly off the wheel while the vehicle is moving.
●When installing a ti re, only use wheel
nuts that have been specifically designed for that wheel.
●If there are any cracks or deformations in the bolt screws, nut threads or bolt
holes of the wheel, have the vehicle inspected by any authorized Lexus retailer or Lexus authorized repairer,
or any reliable repairer.
■After using the tools and jack
Before driving, make sure all the tools and jack are stored securely in place. Failure to do so may cause injury in case
of a collision or sudden braking.
NOTICE
■Repairing or replacing tires, wheels, tire pressure warning valves, trans-mitters and tire valve caps
 P.335

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6-3. Do-it-yourself maintenance
Maintenance and care
■Effects of incorrect tire inflation pres- sure
Driving with incorrect tire inflation pressure may result in the following:
●Reduced fuel economy
●Reduced driving comfort and poor han-dling
●Reduced tire life due to wear
●Reduced safety
●Damage to the drivetrain
If a tire needs frequent inflating, have it checked by any authorized Lexus retailer or Lexus authorized repairer, or any reliable
repairer.
■Instructions for checking tire inflation pressure
When checking tire inflation pressure, observe the following:
●Check only when the tires are cold.If your vehicle has been parked for at least 3 hours or has not been driven for
more than 1.5 km or 1 mile, you will get an accurate cold tire inflation pressure read-ing.
●Always use a tire pressure gauge.It is difficult to judge if a tire is properly
inflated based only on its appearance.
●It is normal for the tire inflation pressure
to be higher after driving as heat is gen- erated in the tire. Do not reduce tire infla-tion pressure after driving.
●Passengers and luggage weight should be placed so that the vehicle is balanced.
Tire inflation pressure
Make sure to maintain proper tire
inflation pressure. Tire inflation
pressure should be checked at least
once per month. However, Lexus
recommends that tire inflation
pressure be checked once every
two weeks.
WARNING
■Proper inflation is critical to save tire performance
Keep your tires properly inflated. If the tires are not properly inflated, the following conditions may occur which
could lead to an accident resulting in death or serious injury:
●Excessive wear
●Uneven wear
●Poor handling
●Possibility of blowouts resulting from overheated tires
●Air leaking from between tire and
wheel
●Wheel deformation and/or tire dam- age
●Greater possibility of tire damage while driving (due to road hazards,
expansion joints, sh arp edges in the road, etc.)
NOTICE
■When inspecting and adjusting tire inflation pressure
Be sure to put the tire valve caps back on. If a valve cap is not installed, dirt or mois-
ture may get into the valve and cause an air leak, resulting in decreased tire infla-tion pressure.

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6-3. Do-it-yourself maintenance
When replacing wheels, care should
be taken to ensure that they are equiv-
alent to those removed in load capac-
ity, diameter, rim width and inset*.
Replacement wheels are available at
any authorized Lexus retailer or Lexus
authorized repairer, or any reliable
repairer.
*: Conventionally referred to as offset.
Lexus does not recommend using the
following:
 Wheels of different sizes or types
 Used wheels
 Bent wheels that have been straight-
ened
■When replacing wheels
The wheels of your vehicle are equipped with tire pressure warning valves and trans-
mitters that allow the tire pressure warning system to provide advance warning in the event of a loss in tire inflation pressure.
Whenever wheels are replaced, tire pres- sure warning valves and transmitters must be installed. ( P.335)Use only Lexus wheel nuts and
wrenches designed for use with
your aluminum wheels.
 When rotating, repairing or chang-
Wheels
If a wheel is bent, cracked or heavily
corroded, it should be replaced.
Otherwise, the tire may separate
from the wheel or cause a loss of
handling control.
Wheel selection
WARNING
■When replacing wheels
●Do not use wheels that are a different
size from those recommended in the Owner’s Manual, as this may result in a loss of handling control.
●Never use an inner tube in a leaking
wheel which is designed for a tubeless tire. Doing so may result in an acci-dent, causing death or serious injury.
■Use of defective wheels prohibited
Do not use cracked or deformed wheels.
Doing so could cause the tire to leak air during driving, possibly causing an acci-dent.
NOTICE
■Replacing tire pressure warning
valves and transmitters
●Because tire repair or replacement
may affect the tire pressure warning valves and transmitters, make sure to have tires serviced by any authorized
Lexus retailer or Lexus authorized repairer, or any reliable repairer or other qualified service shop. In addi-
tion, make sure to purchase your tire pressure warning valves and transmit-ters at any authorized Lexus retailer or
Lexus authorized repairer, or any reli- able repairer.
●Ensure that only genuine Lexus wheels are used on your vehicle.
Tire pressure warning valves and trans- mitters may not work properly with non-genuine wheels.
Aluminum wheel precautions

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7-2. Steps to take in an emergency
a different tone for 90 more seconds.
■Rear passengers’ seat belt reminder lights (warning buzzer*1)*2
*1: Rear passenger’s seat belt warning buzzer:
The seat belt warning buzzer sounds to alert th e rear passengers that his or her seat belt is
not fastened. The buzzer sounds for 30 second s after the vehicle reaches a speed of 20
km/h (12 mph). Then, if the seat belt is still unfastened, the buzzer will sound in a different
tone for 90 more seconds.
*2: This light illuminates on the center panel.
■Master warning light (warning buzzer)
■Tire pressure warning light
Warning
lightWarning light/Details/Actions
Warns the rear passengers to fasten their seat belts
 Fasten the seat belt.
Warning
lightWarning light/Details/Actions
A buzzer sounds and the warning light comes on and flashes to indicate that
the master warning system has detected a malfunction.
 P.378
Warning
lightWarning light/Details/Actions
When the light comes on:
Low tire inflation pressure such as
 Natural causes (P.375)
 Flat tire (P.384)
 Adjust the tire inflation pressure to the specified level.
The light will turn off after a few minu tes. In case the light does not turn
off even if the tire inflation pressure is adjusted, have the system
checked by any authorized Lexus reta iler or Lexus authorized repairer,
or any reliable repairer.
When the light comes on after blinking for 1 minute:
Malfunction in the tire pressure warning system
 Have the system checked by any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer.

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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
■Conditions that the tire pressure warning system may not function properly
 P.330
■If the tire pressure warning light frequently comes on after blinking for 1 minute
If the tire pressure warning lig ht frequently comes on after blinking for 1 minute when the engine switch is turned to IGNITION ON mode , have it
checked by any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer.
■Warning buzzer
In some cases, the buzzer may not be heard due to being in a noisy location or audio sound.
WARNING
■If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact any authorized Lexus retailer
or Lexus authorized repairer, or any reliabl e repairer. The vehicle will become extremely unstable during braking, and the ABS system may fail, which could cause an accident resulting in death or serious injury.
■When the electric power steering system warning light comes on
When the light comes on yellow, the assist to the power steering is restricted. When the
light comes on red, the assist to the power st eering is lost and handling operations of the steering wheel become extremely heavy. When steering wheel operations are heavier than usual, grip the steering wheel firmly and operate it using more force than usual.
■If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause a loss of vehi-
cle control and result in death or serious injury.
●Decelerate to the lowest appropriate speed as soon as possible. Do not drive over 80 km/h (50 mph).
●Check and adjust the tire inflation pressure immediately.
●If the tire pressure warning light comes on ev en after tire inflation pressure adjustment, it is probable that you have a flat tire. Have the flat tire replaced by nearest authorized
Lexus retailer or Lexus authorized repairer, or any reliable repairer.
●Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could lose control of the steering wheel or the brakes.
■If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.

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7-2. Steps to take in an emergency
When trouble arises
NOTICE
■To ensure the tire pressure warning system operates properly
Do not install tires with different specifications or makers, as the tire pressure warning system may not operate properly.

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7-2. Steps to take in an emergency
The ABS warning light comes on. ( P.369)
●Malfunction in the charging system
The charging system warning light comes on. ( P.368)
●Malfunction in the brake system
The brake system warning light comes on. ( P.368)
●Malfunction in the tire pressure warning system
The tire pressure warning light comes on. ( P.374)
●Remaining fuel level is low
The low fuel level warn ing light comes on. (P.373)
■If “Hybrid System Overheated Reduced Output Power” is shown (LC500h)
This message may be displayed when driving un der severe operating conditions. (For exam- ple, when driving up a long steep hill.) Stop and check. (P.403)
■If “Traction Battery Needs to be Protected Refrain from the Use of N Position” is shown
(LC500h)
The remaining charge for the hybrid battery (tr action battery) is low. As the hybrid battery
(traction battery) cannot be charged when the sh ift position is in N, when stopping the vehi- cle for a long period of time, shift the shift position to P.
■If “Traction Battery needs to be Protected Shift into P to Restart” is shown (LC500h)
The remaining charge for the hybrid battery (tr action battery) is low, because the shift posi- tion has been shifted to N for a long period of time. When moving the vehicle, shift the shift position to P and restart the hybrid system.
■If “Shift to P Before Exiting Vehicle” is shown
The driver’s door is opened without turning the engine switch to off with the
shift position in any position other than P. Shift the shift position to P.
■If “Shift Is in N Release Accele rator Before Shifting” is shown
The accelerator pedal has been depressed when the shift position is in N. Release the accel-
erator pedal and shift the shift position to D or R.
■If “Depress Brake when Vehicle Is Stoppe d Hybrid System May Overheat” is shown (LC500h)
The message may be displayed when the accelerator pedal is depressed to hold the vehicle while the vehicle is stopped on an uphill etc. The hybrid system may overheat. Release the accelerator pedal and depress the brake pedal.
■If “Shift system malfunction Driving unavailable” is shown
There is a malfunction in the shift control system. Have the vehicle inspected by any autho- rized Lexus retailer or Lexus authorized repa irer, or any reliable repairer immediately.
■If “Auto Power Off to Conserve Battery” is shown
LC500: Power was turned off due to the automatic power off function. Next time when starting the
engine, increase the engine speed slightly an d maintain that level for approximately 5 min- utes to recharge the 12-volt battery.
LC500h: