Lexus LX570 (2021 year). Manual in english — page 33

When trouble

Raise the tire.

While raising, secure the tire, taking

care that the tire goes straight up with-

out catching on any surrounding part, to

prevent it from flying forward during a

collision or sudden braking.
After the tire goes half way up, check

that the suspended chain is able to enter

the tire hole, for proper storage.

Tightening torque:
33.2 ft•lbf (45 N•m, 4.6 kgf•m)
Confirm that the tire is not loose
after tightening:

Push and pull the tire
Try rotating

Visually check to ensure the tire is

not hung on surrounding parts.

If looseness or misassembly exists, repeat step and step .

Repeat step , any time the tire is lowered or disturbed.
Stow the tools and jack securely.

■

After completing the tire change

The tire pressure warning system must be reset. (



P. 491)

NOTICE

■

When stowing the flat tire

Ensure that there is no object caught between the tire and the vehicle underbody.

■

When replacing the tires

●

When removing or fitting the wheels, tires or the tire pressure warning valve and

transmitter, contact your Lexus dealer as the tire pressure warning valve and trans-

mitter may be damaged if not handled correctly.

●

Replace the grommets for the tire pressure warning valves and transmitters as well.

■

To avoid damage to the tire pressure 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 possible. Make sure to replace the tire pressure

warning valve and transmitter when replacing the tire. (



P. 491)

548

If the engine will not start

One of the following may be the cause of the problem:

●

There may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.

●

The engine may be flooded.
Try to restart the engine again following correct starting procedures.
(

P. 211)

●

There may be a malfunction in the engine immobilizer system. (



P. 80)

One of the following may be the cause of the problem:

●

The battery may be discharged. (



P. 553)

●

The battery terminal connections may be loose or corroded.

The engine starting system may be malfunctioning due to an electrical problem
such as an open circuit or a blown fuse. However, an interim measure is available
to start the engine. (



P. 549)

If the engine will not start even though correct starting procedures are being
followed (



P. 211), consider each of the following points:

The engine will not start even when the starter motor operates nor-
mally.

The starter motor turns over slowly, the interior lights and headlights
are dim, or the horn does not sound or sounds at a low volume.

The starter motor does not turn over.

549

When trouble

One of the following may be the cause of the problem:

●

One or both of the battery terminals may be disconnected.

●

The battery may be discharged. (



P. 553)

●

There may be a malfunction in the steering lock system.

Contact your Lexus dealer if the problem cannot be repaired, or if repair procedures

are unknown.

When the engine does not start, the following steps can be used as an interim
measure to start the engine if the engine switch is functioning normally.

Set the parking brake.
Put the shift lever in P.
Set the engine switch to the ACCESSORY mode.
Push and hold the engine switch for about 15 seconds while depressing the
brake pedal firmly.

Even if the engine can be started using the above steps, the system may be mal-
functioning. Have the vehicle inspected by your Lexus dealer.

The starter motor does not turn over, the interior lights and headlights
do not turn on, or the horn does not sound.

Emergency start function

2
3
4

550

If the electronic key does not operate properly

Use the mechanical key (



P. 117) in

order to perform the following opera-
tions (driver’s door only):

Locks all the doors
Closes the windows and moon roof

(turn and hold)
Unlocks the doors

Turning the key rearward unlocks the

driver’s door. Turning the key once again

unlocks the other doors.

Opens the windows and moon roof

(turn and hold)

: These settings must be customized at your Lexus dealer.

If communication between the electronic key and vehicle is interrupted
(



P. 140) or the electronic key cannot be used because the battery is

depleted, the smart access system with push-button start and wireless
remote control cannot be used. In such cases, the doors can be opened and
the engine can be started by following the procedure below.

Locking and unlocking the doors and key linked functions

551

When trouble

Ensure that the shift lever is in P and depress the brake pedal.
Touch the Lexus emblem side of the
electronic key to the engine switch.

When the electronic key is detected, a

buzzer sounds and the engine switch

will turn to IGNITION ON mode.

When the smart access system with

push-button start is deactivated in cus-

tomization setting, the engine switch will

turn to ACCESSORY mode.

Firmly depress the brake pedal and check that

is shown on the

multi-information display.
Press the engine switch.

In the event that the engine still cannot be started, contact your Lexus dealer.

■

Stopping the engine

Shift the shift lever to P and press the engine switch as you normally do when stopping

the engine.

■

Replacing the key battery

As the above procedure is a temporary measure, it is recommended that the electronic

key battery be replaced immediately when the battery is depleted. (

P. 507)

■

Changing engine switch modes

Release the brake pedal and press the engine switch in step above. The engine does

not start and modes will be changed each time the switch is pressed. (

P. 212)

■

Alarm

Using the mechanical key to lock the doors will not set the alarm system.
If a door is unlocked using the mechanical key when the alarm system is set, the alarm

may be triggered. (

P. 82)

■

When the electronic key does not work properly

●

Make sure that the smart access system with push-button start has not been deacti-

vated in the customization setting. If it is off, turn the function on.

(Customizable features:

P. 584)

●

Check if battery-saving mode is set. If it is set, cancel the function. (

P. 140)

Starting the engine

552

WARNING

■

When using the mechanical key and operating the power windows or moon roof

Operate the power window or moon roof after checking to make sure that there is no

possibility of any passenger having any of their body parts caught in the window or

moon roof.
Also, do not allow children to operate the mechanical key. It is possible for children and

other passengers to get caught in the power window or moon roof.

553

When trouble

If the vehicle battery is discharged

If you have a set of jumper (or booster) cables and a second vehicle with a 12-volt
battery, you can jump start your Lexus following the steps below.

Confirm that the electronic key is
being carried.
When connecting the jumper (or
booster) cables, depending on the
situation, the alarm may activate and
doors locked. (

P. 84)

Open the hood. Remove the engine compartment cover. (

P. 478)

Connect the jumper cables.

Positive (+) battery terminal on your vehicle
Positive (+) battery terminal on the second vehicle
Negative (-) battery terminal on the second vehicle
Connect the jumper cable to ground on your vehicle as shown in the illus-
tration.

The following procedures may be used to start the engine if the vehicle’s bat-
tery is discharged.
You can also call your Lexus dealer or qualified repair shop.

2
3

2
3
4

554

Start the engine of the second vehicle. Increase the engine speed slightly and
maintain at that level for approximately 5 minutes to recharge the battery of
your vehicle.
Open and close any of the doors with the engine switch off.
Maintain the engine speed of the second vehicle and turn the engine switch to
IGNITION ON mode, then start the vehicle’s engine.
Once the vehicle’s engine has started, remove the jumper cables in the exact
reverse order in which they were connected.

Once the engine starts, have the vehicle checked at your Lexus dealer, as soon
as possible.

■

Starting the engine when the battery is discharged

The engine cannot be started by push-starting.

■

Avoiding a discharged battery

●

Turn off the headlights and the audio system while the engine is off.

●

Turn off any unnecessary electrical components when the vehicle is running at a low

speed for an extended period, such as in heavy traffic, etc.

■

Charging the battery

The electricity stored in the battery will discharge gradually even when the vehicle is not

in use, due to natural discharge and the draining effects of certain electrical appliances. If

the vehicle is left for a long time, the battery may discharge, and the engine may be

unable to start. (The battery recharges automatically during driving.)

■

When the battery is removed or discharged

The power back door must be initialized. (



P. 132)

5
6

555

When trouble

WARNING

■

Avoiding battery fires or explosions

Observe the following precautions to prevent accidentally igniting the flammable gas

that may be emitted from the battery.

●

Make sure the jumper cable is connected to the correct terminal and that it is not

unintentionally in contact with any part other than the intended terminal.

●

Do not allow the jumper cables to come into contact with the “+” and “-” terminals.

●

Do not allow open flame or use matches, cigarette lighters or smoke near the battery.

■

Battery precautions

The battery contains poisonous and corrosive acidic electrolyte, while related parts

contain lead and lead compounds. Observe the following precautions when handling

the battery.

●

When working with the battery, always wear safety glasses and take care not to allow

any battery fluids (acid) to come into contact with skin, clothing or the vehicle body.

●

Do not lean over the battery.

●

In the event that battery fluid comes into contact with the skin or eyes, immediately

wash the affected area with water and seek medical attention.

Place a wet sponge or cloth over the affected area until medical attention can be

received.

●

Always wash your hands after handling the battery support, terminals, and other bat-

tery-related parts.

●

Do not allow children near the battery.

NOTICE

■

When handling jumper cables

Be careful that the jumper cables do not become tangled in the cooling fan or any of

the belts when connecting or disconnecting them.

556

If your vehicle overheats

Stop the vehicle in a safe place and turn off the air conditioning system, and
then stop the engine.
If you see steam:
Carefully lift the hood after the steam subsides.
If you do not see steam:
Carefully lift the hood.
After the engine has cooled down sufficiently, inspect the hoses and radiator
core (radiator) for any leaks.

Radiator
Cooling fans

If a large amount of coolant leaks,

immediately contact your Lexus

dealer.

The following may indicate that your vehicle is overheating.

●

The needle of the engine coolant temperature gauge (



P. 92) enters the

red zone or a loss of engine power is experienced. (For example, the vehicle
speed does not increase.)

●

Steam is coming from under the hood.

Correction procedures

557

When trouble

The coolant level is satisfactory if it is between the “F” and “L” lines on the res-
ervoir.

Reservoir
“F” line
“L” line
Radiator cap

Add coolant if necessary.

Water can be used in an emergency if

coolant is unavailable.

Start the engine and turn the air conditioning system on to check that the air
conditioning condenser cooling fans operate and to check for coolant leaks
from the radiator or hoses.

The fans operate when the air conditioning system is turned on immediately after a

cold start. Confirm that the fans are operating by checking the fan sound and air flow.

If it is difficult to check these, turn the air conditioning system on and off repeatedly.

(The fans may not operate in freezing temperatures.)

If the fans are not operating:
Stop the engine immediately and contact your Lexus dealer.
If the fans are operating:
Have the vehicle inspected at the nearest Lexus dealer.

2
3
4

558

WARNING

■

When inspecting under the hood of your vehicle

Observe the following precautions.

Failure to do so may result in serious injury such as burns.

●

If steam is seen coming from under the hood, do not open the hood until the steam

has subsided. The engine compartment may be very hot.

●

Keep hands and clothing (especially a tie, a scarf or a muffler) away from the fans and

belts. Failure to do so may cause the hands or clothing to be caught, resulting in seri-

ous injury.

●

Do not loosen the radiator cap or the coolant reservoir cap while the engine and radi-

ator are hot. High temperature steam or coolant could spray out.

NOTICE

■

When adding engine coolant

Add coolant slowly after the engine has cooled down sufficiently. Adding cool coolant

to a hot engine too quickly can cause damage to the engine.

■

To prevent damage to the cooling system

Observe the following precautions:

●

Avoid contaminating the coolant with foreign matter (such as sand or dust etc.).

●

Do not use any coolant additive.

559

When trouble

If the vehicle becomes stuck

Stop the engine. Set the parking brake and shift the shift lever to P.
Remove the mud, snow or sand from around the rear wheels.
Place wood, stones or some other material under the rear wheels to help pro-
vide traction.
Restart the engine.
Shift the shift lever to the D or R position and release the parking brake. Then,
while exercising caution, depress the accelerator pedal.

■

When it is difficult to free the vehicle

■

Extra high mode

P. 306

Carry out the following procedures if the tires spin or the vehicle becomes
stuck in mud, dirt, or snow:

Press

to turn off Active TRAC.

2
3

4
5

560

WARNING

■

When attempting to free a stuck vehicle

If you choose to push the vehicle back and forth to free it, make sure the surrounding

area is clear, to avoid striking other vehicles, objects or people. The vehicle may also

lunge forward or lunge back suddenly as it becomes free. Use extreme caution.

■

When shifting the shift lever

Be careful not to shift the shift lever with the accelerator pedal depressed.

This may lead to unexpected rapid acceleration of the vehicle that may cause an acci-

dent and result in death or serious injury.

NOTICE

■

To avoid damaging the transmission and other components

●

Avoid spinning the rear wheels and depressing the accelerator pedal more than nec-

essary.

●

If the vehicle remains stuck even after these procedures are performed, the vehicle

may require towing to be freed.

●

When a warning message for the automatic transmission fluid temperature is dis-

played while attempting to free a stuck vehicle, immediately remove your foot from

the accelerator pedal and wait until the warning message disappears. Otherwise, the

transmission may become damaged. (