warning lexus LC500 2018 Owner's Manual

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6-3. Do-it-yourself maintenance
Maintenance and care
2Slightly loosen the wheel nuts (one
turn).
3 Turn the tire jack portion by
hand until the notch of the jack is in
contact with the jack point.
The jack point guides are located under the rocker panel. They indicate the jack
point positions.
4 Raise the vehicle until the tire is
slightly raised off the ground.
5 Remove all the wheel nuts and the
tire.
When resting the tire on the ground, place
the tire so that the wheel design faces up to avoid scratching the wheel surface.
1 Remove any dirt or foreign matter
from the wheel contact surface.
TireWheel chock positions
Front left-
hand side
Behind the rear right-hand
side tire
Front right-
hand side
Behind the rear left-hand
side tire
Rear left-
hand side
In front of the front right-
hand side tire
Rear right-
hand side
In front of the front left-hand
side tire
A
WARNING
■Replacing a tire
Do not touch the disc wheels or the area around the brakes immediately after the vehicle has been driven.
After the vehicle has been driven the disc wheels and the area around the brakes will be extremely hot. Touching these
areas with hands, feet or other body parts while changing a tire, etc. may result in burns.
Installing the tire

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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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6-3. Do-it-yourself maintenance
1Turn the engine switch <power
switch> off.
2 Open the fuse box cover.
Engine compartment: type A fuse
box (LC500)
Left-hand drive vehicles:
Push the tab in and lift the lid off.
Right-hand drive vehicles:
Push the tab in and lift the lid off.
WARNING
■Removed battery and other parts
These parts are small and if swallowed by
a child, they can cause choking. Keep away from children. Failure to do so could result in death or serious injury.
■Certification for the electronic key
battery
CAUTION
RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE.
DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS
NOTICE
■When replacing the battery
Use a screwdriver of appropriate size. Applying excessive force may deform or
damage the cover.
■For normal operation after replacing the battery
Observe the following precautions to prevent accidents:
●Always work with dry hands.Moisture may cause the battery to rust.
●Do not touch or move any other com-
ponent inside the remote control.
●Do not bend either of the battery ter- minals.
Checking and replacing
fuses
If any of the electrical components
do not operate, a fuse may have
blown. If this happens, check and
replace the fuses as necessary.
Checking and replacing fuses

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6-3. Do-it-yourself maintenance
Blown fuse
Type D
Normal fuse
Blown fuse
■After a fuse is replaced
●When installing the lid, make sure that the tab is installed securely.
●If the lights do not turn on even after the fuse has been replaced, a bulb may need replacement. ( P.355)
●If the replaced fuse blows again, have the
vehicle inspected by any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer.
■If there is an overload in a circuit
The fuses are designed to blow, protecting the wiring harness from damage.
■When replacing light bulbs
Lexus recommends that you use genuine Lexus products designed for this vehicle.
Because certain bulbs are connected to cir- cuits designed to prevent overload, non-genuine parts or parts not designed for this
vehicle may be unusable.
WARNING
■To prevent system breakdowns and vehicle fire
Observe the following precautions. Failure to do so may cause damage to
the vehicle, and possibly a fire or injury.
B
A
B
●Never use a fuse of a higher amperage rating than that indicated, or use any
other object in place of a fuse.
●Always use a genuine Lexus fuse or equivalent.Never replace a fuse with a wire, even
as a temporary fix.
●Do not modify the fuses or fuse boxes.
NOTICE
■Before replacing fuses
Have the cause of electrical overload
determined and repaired by any autho- rized Lexus retailer or Lexus authorized repairer, or any reliable repairer as soon
as possible.

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6-3. Do-it-yourself maintenance
■Rear fog light
1 Disconnect the connector.
2 Turn the bulb base counterclock-
wise.
3 Remove the light bulb.
4 Install a new light bulb then install
the bulb base to the light unit by
inserting it and turning the bulb
base clockwise.
5 Reconnect the connector.
After reconnecting the connector, turn on the rear fog light to visually check that
there is no light leaking from the bulb base.
Replacing light bulb
WARNING
■Replacing light bulb
●Turn off the light. Do not attempt to replace the bulb immediately after turning off the light.
The bulb become very hot and may cause burns.
●Do not touch the glass portion of the light bulb with bare hands. When it is
unavoidable to hold the glass portion, use and hold with a clean dry cloth to avoid getting moisture and oils on the
bulb. Also, if the bulb is scratched or dropped, it may blow out or crack.

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6-3. Do-it-yourself maintenance
Maintenance and care
WARNING
●Fully install light bulb and any parts used to secure it. Failure to do so may result in heat damage, fire, or water
entering the light unit. This may dam- age the light or cause condensation to build up on the lens.
■To prevent damage or fire
●Make sure bulb is fully seated and locked.
●Check the wattage of the bulb before
installing to prev ent heat damage.

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7
When trouble arises
When trouble arises
7-1. Essential information
Emergency flashers ................. 360
If your vehicle has to be stopped in
an emergency.......................... 360
7-2. Steps to take in an emergency
If your vehicle needs to be towed
........................................................ 362
If you think something is wrong
........................................................ 366
Fuel pump shut off system
(LC500) ................................... 367
If a warning light turns on or a
warning buzzer sounds ....... 368
If a warning message is displayed
........................................................ 378
If you have a flat tire.................. 384
If the engine will not start
(LC500) ................................... 385
If the hybrid system will not start
(LC500h) ................................. 386
If you lose your keys ................. 388
If the fuel filler door cannot be
opened ....................................... 388
If the electronic key does not
operate properly .................... 389
If the 12-volt battery is discharged
........................................................ 392
If your vehicle overheats
(LC500) ................................... 400
If your vehicle overheats
(LC500h) ................................. 403
If the vehicle becomes stuck 407

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7-1. Essential information
When trouble arises
seconds or more, or press it briefly
3 times or more in succession.
5 Stop the vehicle in a safe place by
the road.
WARNING
■If the engine <hybrid system> has to
be turned off while driving
Power assist for the steering wheel will be lost, making the steering wheel heavier to turn. Decelerate as much as
possible before turning off the engine <hybrid system>.