LEXUS RX 350 L (2019 year). Instruction - part 42

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8-2. Steps to take in an emergency

When trouble

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RX350/RX350L_U

When replacing tires on a vehicle with wheel lock nuts, use the following proce-
dures to remove and install the wheel lock nuts. The wheel lock key is stored in
the tray inside the luggage compartment. Always return the wheel lock key to its
original position after use, so that it does not get lost.

■

Removal
For ease of removal, the wheel lock nut should always be the first one loos-
ened.

Place the wheel lock key on top of the wheel lock nut, turning until the
wheel lock key and wheel lock nut patterns engage.
Place the wheel nut wrench on the wheel lock key, and while applying pres-
sure on the wheel lock key, loosen the wheel lock nut.

■

Installation
For ease of installation, the wheel lock nut should always be the last one tight-
ened.

By hand, install a wheel lock nut on each wheel.
Place the wheel lock key on top of the wheel lock nut, turning until the
wheel lock key and wheel lock nut patterns engage.
Place the wheel nut wrench on the wheel lock key, and while applying pres-
sure on the wheel lock key, tighten the wheel lock nut to the recommended
torque.

Wheel lock nut (if equipped)

NOTICE

Do not use an impact wrench. Using an impact wrench may cause permanent damage

to wheel lock nut and wheel lock key. If in doubt about wheel lock application, contact

your Lexus dealer.

670

8-2. Steps to take in an emergency

RX350/RX350L_U

Secure the deck board using the hook. (

P. 540)

Disengage the hook and take out
the jack.

RX350: Remove the wheel nut wrench

and then the jack
RX350L: Remove the jack handle and

then the jack



RX350
Secure the deck board using the hook. (

P. 540)

Loosen the center fastener that
secures the spare tire.



RX350L
Remove the deck board.
Remove the cover.

Taking out the jack

Taking out the spare tire

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8-2. Steps to take in an emergency

When trouble

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RX350/RX350L_U

Attach the adapter socket to the
spare tire clamp bolt.

Assemble the jack handle extension.

Connect the jack handle to the
adapter socket. Turn the jack handle
counterclockwise.

The tire will be lowered completely to

the ground.
Turn the jack handle slowly to lower the

spare tire. If the handle is turned quickly,

the wire cable may come off the shaft

inside the unit and the tire may not be

lowered.

If the spare tire cannot be lowered:

P. 674

Pull out the spare tire and stand it
against the bumper.

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8-2. Steps to take in an emergency

RX350/RX350L_U

Fully depress the secondary latch

and remove the holding bracket
from the hoist assembly

Tilt the bracket

and pass it

through the wheel opening. Then
remove the hoist assembly

WARNING

■

When storing the spare tire
Be careful not to catch fingers or other body parts between the spare tire and the body

of the vehicle.

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8-2. Steps to take in an emergency

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RX350/RX350L_U

Chock the tires.

Slightly loosen the wheel nuts (one
turn).

For vehicles with wheel lock nuts, loosen

the wheel lock nut first.

Turn the tire jack portion

by hand

until the notch of the jack is in con-
tact with the jack point.

The jack point guides are located under

the rocker panel. They indicate the jack

point positions.

Replacing a flat tire

Flat tire

Wheel chock positions

Front

Left-hand side

Behind the rear right-hand side tire

Right-hand side

Behind the rear left-hand side tire

Rear

Left-hand side

In front of the front right-hand side tire

Right-hand side

In front of the front left-hand side tire

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8-2. Steps to take in an emergency

RX350/RX350L_U

Raise the vehicle until the tire is
slightly raised off the ground.

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.

■

If the spare tire cannot be lowered (RX350L)
If the spare tire cannot be lowered, it may not have been stowed properly. Perform the

following procedure:

If the spare tire still cannot be lowered, the wire cable may be severed. Have the vehicle

inspected by your Lexus dealer.

Fully tighten the spare tire clamp bolt by turn-

ing the jack handle clockwise until two clicks

are heard and the jack handle skips.

Turn the jack handle counterclockwise to

lower the spare tire.
If the spare tire still cannot be lowered,

attempt to fully tighten the spare tire clamp

bolt again by turning the jack handle clock-

wise. Then turn it counterclockwise at least 2

turns to lower the spare tire.

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8-2. Steps to take in an emergency

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RX350/RX350L_U

WARNING

■

When holding a tire with Selectable Color Trim (if equipped)

■

Replacing a flat 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.

●

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, 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.

• 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.

●

Observe the following precautions. (RX350L)

Failure to do so may result in serious injury:
• Do not try to remove the wheel ornament by hand. Take due care in handling the

ornament to avoid unexpected personal injury.

• Lower the spare tire completely to the ground before removing it from under the

vehicle.

■

Replacing a flat tire for vehicles with power back door
In cases such as when replacing tires, make sure to turn off the power back door main

switch (

P. 101). Failure to do so may cause the back door to operate unintentionally if

the power back door switch is accidentally touched, resulting in hands and fingers

being caught and injured.

Do not hold the tire by the Selectable Color

Trim. Otherwise, the Selectable Color Trim

may be damaged or may fall off causing the tire

to drop, possibly causing injury.

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8-2. Steps to take in an emergency

RX350/RX350L_U

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, causing

the tire to come off.

Install the spare tire and loosely
tighten each wheel nut by hand by
approximately the same amount.

Tighten the wheel nuts until the tapered

portion comes into loose contact with

the disc wheel seat.

Lower the vehicle.

Firmly tighten each wheel nut two or
three times in the order shown in the
illustration.

For vehicles with wheel lock nuts,

tighten the wheel lock nut last.
Tightening torque:

76 ft•lbf (103 N•m, 10.5 kgf•m)

RX350: Stow the flat tire, tire jack and all tools.
RX350L:

P. 677

Installing the spare tire

Disc wheel
seat

Tapered portion

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8-2. Steps to take in an emergency

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RX350/RX350L_U

Remove the center wheel ornament by pushing from the reverse side.
Be careful not to lose the wheel ornament.
Stand the tire against the bumper
with the inner surface facing toward
you. Pass the hoist assembly

and

holding bracket

through the

wheel opening.

Fully depress the secondary latch

and install the bracket

to the

hoist assembly

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 serious injury or death.

Stowing the flat tire, jack and all tools (RX350L)

678

8-2. Steps to take in an emergency

RX350/RX350L_U

Lay the tire on the ground with the
outer surface (valve stem) facing up.

Before raising the tire, make sure
that the hoist assembly is perpendic-
ular to the wheel opening. (Try to
place the tire directly beneath the
vehicle, near where the wire cable is
hanging from.)

Using the jack handle and adapter socket, tighten the tire clamp bolt by turn-
ing it clockwise until the tire is in the correct position and two clicks are heard
as the jack handle skips.
Confirm it is not loose after tighten-
ing:

Push and pull the tire
Try rotating

Visually check to ensure tire is not

hung on surrounding parts.
If looseness or misassembly exists,
repeat steps

to .

Repeat step

, any time the tire is lowered or disturbed.

Stow the jack and all tools.

Valve stem

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8-2. Steps to take in an emergency

When trouble

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RX350/RX350L_U

■

The compact spare tire

●

The compact spare tire is identified by the label “TEMPORARY USE ONLY” on the

tire sidewall.

Use the compact spare tire temporarily, and only in an emergency.

●

Make sure to check the tire inflation pressure of the compact spare tire. (

P. 704)

■

When using the compact spare tire
As the compact spare tire is not equipped with a tire pressure warning valve and trans-

mitter, low inflation pressure of the spare tire will not be indicated by the tire pressure

warning system. Also, if you replace the compact spare tire after the tire pressure warn-

ing light comes on, the light remains on.

■

When the compact spare tire is equipped
When driving with the compact spare tire installed, the vehicle height will be different

than when driving with standard tires.

■

If you have a flat front tire on a road covered with snow or ice
Install the compact spare tire on one of the rear wheels of the vehicle. Perform the follow-

ing steps and fit tire chains to the front tires:

Replace a rear tire with the compact spare tire.
Replace the flat front tire with the tire removed from the rear of the vehicle.
Fit tire chains to the front tires.

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680

8-2. Steps to take in an emergency

RX350/RX350L_U

WARNING

■

When using the compact spare tire

●

Remember that the compact spare tire provided is specifically designed for use with

your vehicle. Do not use your compact spare tire on another vehicle.

●

Do not use more than one compact spare tire simultaneously.

●

Replace the compact spare tire with a standard tire as soon as possible.

●

Avoid sudden acceleration, abrupt steering, sudden braking and shifting operations

that cause sudden engine braking.

■

When the compact spare tire is attached
The vehicle speed may not be correctly detected, and the following systems may not

operate correctly:

Also, not only can the following system not be utilized fully, but it may even negatively

affect the drive-train components:
• AWD system (AWD models)

■

Speed limit when using the compact spare tire
Do not drive at speeds in excess of 50 mph (80 km/h) when a compact spare tire is

installed on the vehicle.
The compact spare tire is not designed for driving at high speeds. Failure to observe

this precaution may lead to an accident causing death or serious injury.

■

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.

• ABS & Brake assist

• VSC

• TRAC

• Trailer Sway Control

• EPS

• VDIM (if equipped)

• Adaptive Variable Suspension System

(if equipped)

• Dynamic radar cruise control with full-

speed range

• PCS (Pre-Collision System)

• LKA (Lane-keeping Assist)

• Automatic High Beam

• AFS (Adaptive Front-lighting System)

(if equipped)

• Tire pressure warning system

• Intuitive parking assist (if equipped)

• Intelligent Clearance Sonar (ICS) (if

equipped)

• Lexus parking assist monitor (if

equipped)

• Panoramic view monitor (if equipped)

• BSM (Blind Spot Monitor) (if

equipped)

• Navigation system (if equipped)

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8-2. Steps to take in an emergency

When trouble

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RX350/RX350L_U

NOTICE

■

Be careful when driving over bumps with the compact spare tire installed on the vehi-

cle
When driving with the compact spare tire installed, the vehicle height will be different

than when driving with standard tires. Be careful when driving over uneven road sur-

faces, etc.

■

Driving with tire chains and the compact spare tire
Do not fit tire chains to the compact spare tire.

Tire chains may damage the vehicle body and adversely affect driving performance.

■

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

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

may be damaged if not handled correctly.

■

When stowing the flat tire (RX350L)

●

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

●

Securely tighten the spare tire clamp bolt to hold the spare wheel carrier by the hook.

●

Stow the flat tire in the spare tire location. Failure to do so may cause damage to the

spare tire carrier. Proper storage reduces the possibility of injury in a collision or

during sudden braking.

●

Have the flat tire repaired and the spare tire replaced with it as soon as possible.

■

Proper storage of the spare tire (RX350L)

●

If the spare tire clamp bolt is turned without a tire on the hoist assembly, the wire cable

may not be able to be lowered. If the wire cable cannot be lowered, contact your

Lexus dealer.

●

If the hoist assembly is slanted when stowing a

tire, the hoist assembly may become stuck in

the wheel opening and the tire may not be

raised properly, causing damage to the wheel

or the wire cable.

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8-2. Steps to take in an emergency

RX350/RX350L_U

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. 231)

●

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

P. 74)

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

●

The battery terminal connections may be loose or corroded.

●

The battery may be discharged. (

P. 687)

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

P. 683)

If the engine will not start

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

P. 231), consider each of the following points:

The engine will not start even though 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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8-2. Steps to take in an emergency

When trouble

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RX350/RX350L_U

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. 687)

●

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.

urn the engine switch to IGNITION ON mode and check that the parking

brake is set. (

P. 232, 247)

Shift the shift lever to P.
Turn the engine switch to 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

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8-2. Steps to take in an emergency

RX350/RX350L_U

■

Unlocking the door
Use the mechanical key (

P. 121) in order to perform the following opera-

tions:

Insert the mechanical key while
pulling on the driver’s door han-
dle.

Unlocking the door.

Turning the key rearward unlocks the

driver’s door. Turning the key again

unlocks the other doors.

Remove the key, return the handle, and then pull the handle again.

If the electronic key does not operate properly

If communication between the electronic key and vehicle is interrupted
(

P. 148) 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

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