flat tire LEXUS LX570 2018 Owner's Manual

492
LX570_OM_OM60Q78U_(U) 6-3. Do-it-yourself maintenance■
When the initialization of the tire pressure warning system has failed
Initialization can be completed in a few minutes. However, in the following cases, the set-
tings have not been recorded and the system will not operate properly. If repeated
attempts to record tire inflation pressure settings are unsuccessful, have the vehicle
inspected by your Lexus dealer. ●
When operating the tire pres sure warning reset switch, th e tire pressure warning light
does not blink 3 times and the setting mess age does not appear on the multi-informa-
tion display. ●
After carrying out the initializat ion procedure, the tire pressu re warning light blinks for 1
minute then stays on after driving for about 20 minutes.
If the inflation of each tire is not displaye d after driving for approximately 1 hour, perform
the following procedure. ●
Park the vehicle in a safe place for approxim ately 20 minutes. Then drive straight (with
occasional left and right turns) at appr oximately 25 mph (40 km/h) or more for
approximately 10 to 20 minutes.
However, in the following situations, the tire inflation pressure will not be recorder and
the system will not operate pr operly. Perform initialization.●
When operating the tire pres sure warning reset switch, th e tire pressure warning light
does not blink 3 times. ●
After performing initia lization, the tire pressure warning light blinks for 1 minute then
stays on after driving for about 20 minutes.
If the inflation pressure of ea ch tire is still not displayed, have the vehicle inspected by
your Lexus dealer. ■
Tire pressure warning system certification 
For vehicles sold in the U.S.A., Hawaii, Guam, Puerto Rico and NATO Germany
FCC ID: PAXPMVC015
NOTE
This device complies with part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.
FCC WARNING
Changes or modifications not expressly approved by the pa rty responsible for compli-
ance could void the user’s authority to operate the equipment. 
For vehicles sold in Canada
Model: PMV-C015
NOTE
This device complies with Industry Canada licence-exempt RSS st andard(s). Operation
is subject to the following two conditions: (1) this device may not cause interference, and
(2) this device must accept any interference, including interference that may cause
undesired operation of the device.

LX570_OM_OM60Q78U_(U) 4936-3. Do-it-yourself maintenance
6
Maintenance and care WARNING ■
Tire pressure warning system operation
The tire pressure warning system may not pr ovide warning immediat ely if a tire bursts
or if sudden air leakage occurs. ■
When inspecting or replacing tires
Observe the following precautions to prevent accidents.
Failure to do so may cause damage to parts of the drive train, as well as dangerous han-
dling characteristics, which may lead to an accident resu lting in death or serious injury.●
Do not mix tires of different makes, models or tread patterns.
Also, do not mix tires of remarkably different treadwear. ●
Do not use tire sizes other than those recommended by Lexus. ●
Do not mix differently constructed tires (radial, bias-belted or bias-ply tires). ●
Do not mix summer, all season and snow tires. ●
Do not use tires that have be en used on another vehicle.
Do not use tires if you do not know how they were used previously. ■
When initializing the tire pressure warning system
Do not operate the tire pressure warning reset switch without first adjusting the tire
inflation pressure to the spec ified level. Otherwis e, the tire pressure warning light may
not come on even if the tire inflation pressu re is low, or it may come on when the tire
inflation pressure is actually normal.

494
LX570_OM_OM60Q78U_(U) 6-3. Do-it-yourself maintenance
NOTICE ■
Repairing or replacing tires, wheels, tire pressure warning valves and transmitters
and tire valve caps ●
When removing or fitting the wheels, tire s or the tire pressure warning valve and
transmitter, contact your Lexus dealer as the tire pressure wa rning valve and trans-
mitter may be damaged if not handled correctly. ●
Make sure to install the tire valve caps. If the tire valve caps ar e not installed, water
could enter the tire pressure warning valves and the tire pressure warning valves
could be bound. ●
When replacing tire valve caps, do not use tire valve caps other than those specified.
The cap may become stuck. ■
To avoid damage to the tire pressu re warning valves and transmitters
When a tire is repaired with liquid sealants, the tire pressure warning valve and trans-
mitter may not operate properly. If a liquid sealant is used, contact your Lexus dealer or
other qualified service shop as soon as possi ble. Make sure to replace the tire pressure
warning valve and transmitter when replacing the tire. ( → P. 487)■
Driving on rough roads
Take particular care when driving on roads with loose surfaces or potholes.
These conditions may cause lo sses in tire inflation pre ssure, reducing the cushioning
ability of the tires. In addition driving on rough roads may cause damage to the tires
themselves, as well as the vehicle’s wheels and body. ■
If tire inflation pressure s become low while driving
Do not continue driving, or your tires and/or wheels may be ruined.

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LX570_OM_OM60Q78U_(U) 6-3. Do-it-yourself maintenance
6
Maintenance and care
Tire inflation pressure The recommended cold tire inflation
pressure and tire size are displayed on
the tire and loading information label.
( → P. 565)Tire inflation pressure

496
LX570_OM_OM60Q78U_(U) 6-3. Do-it-yourself maintenance
Tire valve
Tire pressure gauge
Remove the tire valve cap.
Press the tip of the tire pressure gauge onto the tire valve.
Read the pressure using the gauge gradations.
If the tire inflation pressure is not at the recommended level, adjust the pres-
sure.
If you add too much air, press the center of the valve to deflate.
After completing the tire inflation pressure measuremen t and adjustment,
apply soapy water to the valve and check for leakage.
Put the tire valve cap back on.Inspection and adjustment procedure 1
2
1
2
3
4
5
6

LX570_OM_OM60Q78U_(U) 4976-3. Do-it-yourself maintenance
6
Maintenance and care ■
Tire inflation pressure check interval
You should check tire inflation pressure ever y two weeks, or at least once a month. Do
not forget to check the spare. ■
Effects of incorrect tire inflation pressure
Driving with incorrect tire inflation pressure may result in the following:●
Reduced fuel economy ●
Reduced driving comfort and poor handling ●
Reduced tire life due to wear ●
Reduced safety ●
Damage to the drive train
If a tire needs frequent inflating, ha ve it checked by your Lexus dealer.■
Instructions for checking tire inflation pressure
When checking tire in flation pressure, ob serve the following:●
Check only when the tires are cold.
If your vehicle has been parked for at le ast 3 hours and has not been driven for more
than 1 mile or 1.5 km, you will get an accu rate cold tire inflat ion pressure reading.●
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 inflat ion pressure to be higher after driving as heat is generated
in the tire. Do not reduce tire inflation pressure after driving.●
Never exceed the vehicle capacity weight.
Passengers and luggage weight should be placed so that the vehicle is balanced.

498
LX570_OM_OM60Q78U_(U) 6-3. Do-it-yourself maintenance
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 resultin g in death or serious injury: ●
Excessive wear ●
Uneven wear ●
Poor handling ●
Possibility of blowouts resu lting from overheated tires●
Air leaking from between tire and wheel ●
Wheel deformation and/ or tire damage ●
Greater possibility of tire damage while driving (due to road hazards, expansion
joints, sharp edges in the road, etc.)
NOTICE ■
When inspecting and adjust ing tire inflation pressure
Be sure to put the tire valve caps back on.
If a valve cap is not installed, dirt or moisture may get into the valve and cause an air
leak, resulting in decreased tire inflation pressure.

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LX570_OM_OM60Q78U_(U) 6-3. Do-it-yourself maintenance
6
Maintenance and care
Wheels When replacing wheels, care should be ta ken to ensure that they are equivalent
to those removed in load capacity, diameter, rim width, and inset
* .
Replacement wheels are available at your Lexus dealer.
* : 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 straightened ●
Use only Lexus wheel nuts and wrenches designed for use with your alumi-
num wheels. ●
When rotating, repairing or changing your tires, check that the wheel nuts are
still tight after driving 1000 miles (1600 km). ●
Be careful not to damage the aluminum wheels when using tire chains. ●
Use only Lexus genuine balance weights or equivalent and a plastic or rubber
hammer when balancing your wheels. ■
When replacing wheels
The wheels of your vehicle are equipped with tire pressure warning valves and transmit-
ters 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 pressure warning
valves and transmitters must be installed. ( → P. 487)If a wheel is bent, cracked or heavil y corroded, it should be replaced.
Otherwise, the tire may separate from the wheel or cause loss of handling
control.
Wheel selection
Aluminum wheel precautions

509
LX570_OM_OM60Q78U_(U) 7When trouble arises 7-1. Essential information
Emergency flashers ................... 510
If your vehicle has to be
stopped in an emergency....... 511
7-2. Steps to take in an emergency
If your vehicle needs
to be towed................................. 512
If you think something is
wrong ............................................ 518
Fuel pump shut off system ....... 519
If a warning light turns
on or a warning buzzer
sounds..........................................520
If a warning message is
displayed.....................................528
If you have a flat tire .................. 532
If the engine will not start ........ 544
If the electronic key does
not operate properly ............. 546
If the vehicle battery is
discharged ................................. 549
If your vehicle overheats ......... 552
If the vehicle becomes
stuck .............................................555

518
LX570_OM_OM60Q78U_(U) 7-2. Steps to take in an emergency
If you think something is wrong ●
Fluid leaks under the vehicle
(Water dripping from the air co nditioning after use is normal)●
Flat-looking tires or uneven tire wear ●
Engine coolant temperature gauge needle continually points higher than nor-
mal ●
Engine oil pressure gauge contin ually points lower than normal●
Voltmeter continually points higher or lower than normal●
Changes in exhaust sound ●
Excessive tire squeal when cornering ●
Strange noises related to the suspension system ●
Pinging or other noises related to the engine ●
Engine missing, stumbling or running 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 f eeling, pedal almost touches the floorIf you notice any of the following symptoms, your vehicle probably needs
adjustment or repair. Contact your Lexus dealer as soon as possible.
Visible symptoms
Audible symptoms
Operational symptoms