Lexus GX460 (2022 year). Manual in english — page 34
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7-2. Steps to take in an emergency
7
When trouble
WARNING
■
Replacing a flat tire
●
Observe the following precautions.
Failure to do so may result in serious injury:
• Lower the spare tire completely to the ground before removing it from under the
vehicle.
• Do not try to remove the wheel ornament by hand. Take due care in handling the
ornament to avoid unexpected personal injury.
• 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.
●
Failure to follow these precautions could cause the nuts to loosen and the wheel may
fall off, which could lead to an accident causing 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, leading 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 76 ft•lbf (103 N•m,
10.5 kgf•m) 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 tire, 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 your Lexus dealer.
558
7-2. Steps to take in an emergency
Remove any dirt or foreign matter
from the wheel contact surface.
If foreign matter is on the wheel contact
surface, the wheel nuts may loosen
while the vehicle is in motion, and the
tire may come off the vehicle.
Install the spare tire and loosely
tighten each nut by hand to approxi-
mately the same amount.
Turn the wheel nuts until the washers
come into contact with the disc wheel.
Lower the vehicle.
Installing the spare tire
1
Wheel nut
Washer
Disc wheel
2
3
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7-2. Steps to take in an emergency
7
When trouble
Firmly tighten each nut two or three
times in the order shown in the illus-
tration.
Tightening torque:
76 ft•lbf (103 N•m, 10.5 kgf•m)
Reinstall the wheel ornament.
4
5
WARNING
■
Stowing the flat tire
Failure to follow steps listed under stowing the tire may result in damage to the spare
tire carrier and loss of the tire, which could result in death or serious injury.
560
7-2. Steps to take in an emergency
Lay down the tire with the valve stem
facing up and install the holding
bracket, inserting the claw into the
wheel lug nut hole. Turn the jack
handle extension clockwise to take
up slack in the chain.
Then, check to ensure the claw is in the
wheel lug nut hole and the holding
bracket is centered in the wheel hub.
Claw
Holding bracket
Raise the tire.
While raising, pull the tire towards the
rear of the vehicle, taking care that the
tire goes up without catching on any
surrounding part, to prevent it from fly-
ing 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:
34.4 ft•lbf (46.6 N•m, 4.8 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.
Stowing the flat tire, jack and all tools
incorrect
correct
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7-2. Steps to take in an emergency
7
When trouble
WARNING
■
After using the tools and jack
Before driving, make sure all the tools and jack are securely in place in their storage
location to reduce the possibility of personal injury during a collision or sudden brak-
ing.
NOTICE
■
When stowing the flat tire
Ensure that there is no object caught between the tire and the vehicle underbody.
562
7-2. Steps to take in an emergency
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.
(
●
There may be a malfunction in the engine immobilizer system. (
One of the following may be the cause of the problem:
●
The battery may be discharged. (
●
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. (
If the engine will not start even though correct starting procedures are being
followed (
P. 200), 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.
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7-2. Steps to take in an emergency
7
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. (
●
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.
Shift the shift lever to P.
Turn the engine switch to the ACCESSORY mode.
Press 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
1
2
3
4
564
7-2. Steps to take in an emergency
If the electronic key does not operate properly
Use the mechanical key (
P. 105) 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. 128) 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
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2
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7-2. Steps to take in an emergency
7
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 shortly and firmly.
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. (
■
Alarm (for Canada)
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 trig-
gered. (
■
Changing engine switch modes
Within 10 seconds of the buzzer sounding, release the brake pedal and press the engine
switch.
The engine does not start and modes will be changed each time the switch is pressed.
(
■
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:
●
Check if battery-saving mode is set. If it is set, cancel the function. (
Starting the engine
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7-2. Steps to take in an emergency
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.
567
7
When trouble
7-2. Steps to take in an emergency
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 by following the steps below.
Confirm that the electronic key is
being carried.
When connecting the jumper (or
booster) cables, depending on the situa-
tion, the alarm may activate and the
doors locked. (
Open the hood. (
Connecting the jumper cables according to the following procedure:
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 call your Lexus dealer, or qualified repair shop.
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2
3
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568
7-2. Steps to take in an emergency
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 of your vehicle with the engine switch off.
Maintain the engine speed of the second vehicle and start the engine of your
vehicle by turning the engine switch to IGNITION ON mode.
Once your 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.
■
To prevent battery discharge
●
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.
■
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 recharging or replacing the battery
●
In some cases, it may not be possible to unlock the doors using the smart access system
with push-button start when the battery is discharged. Use the wireless remote control
or the mechanical key to lock or unlock the doors.
●
The engine may not start on the first attempt after the battery has recharged but will
start normally after the second attempt. This is not a malfunction.
●
The engine switch mode is memorized by the vehicle. When the battery is recon-
nected, the system will return to the mode it was in before the battery was discharged.
Before disconnecting the battery, turn the engine switch off. If you are unsure what
mode the engine switch was in before the battery discharged, be especially careful
when reconnecting the battery.
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7-2. Steps to take in an emergency
7
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 other than the intended terminal.
●
Do not allow the + and - clamps of the jumper cables to come into contact with each
other.
●
Do not smoke, use matches, cigarette lighters or allow open flame 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
When connecting the jumper cables, ensure that they do not become entangled in the
cooling fans or belt.
570
7-2. Steps to take in an emergency
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. 88) 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
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7-2. Steps to take in an emergency
7
When trouble
The coolant level is satisfactory if it is between the “F” and “L” lines on the res-
ervoir.
Reservoir
“F”
“L”
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 radi-
ator 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.
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7-2. Steps to take in an emergency
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.
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