LEXUS RX 450HL (2019 year). Instruction - part 42

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8-2. Steps to take in an emergency

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If “Maintenance Required Visit Your Dealer” is displayed (U.S.A. only)
Indicates that all maintenance is required to correspond to the driven distance
on the maintenance schedule

Comes on approximately 5000 miles (8000 km) after the message has
been reset.
(The indicator will not work properly unless the message has been reset.)
Perform the necessary maintenance. Please reset the message after the main-
tenance is performed. (

P. 588)

: Refer to the separate “Scheduled Maintenance” or “Owner’s Manual Supplement”

for the maintenance interval applicable to your vehicle.

■

System warning lights
The master warning light does not come on or flash in the following cases. Instead, a sep-

arate system warning light will come on along with a message shown on the multi-infor-

mation display.

●

“Braking Power Low Visit Your Dealer”:

The brake system warning light (yellow) come on. (

P. 660)

●

“Antilock Brake System Malfunction Visit Your Dealer”:

The ABS warning light comes on. (

P. 661)

●

“Charging System Malfunction See Owner's Manual” (F SPORT models):

The charging system warning light comes on. (

P. 660)

■

Warning buzzer
P. 665

NOTICE

■

“High Power Consumption Partial Limit On AC/Heater Operation” is frequently

shown
There is a possible malfunction relating to the charging system or the 12-volt battery

may be deteriorating. Have the vehicle inspected by your Lexus dealer.

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8-2. Steps to take in an emergency

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Stop the vehicle in a safe place on a hard, flat surface.

●

Set the parking brake.

●

Shift the shift lever to P.

●

Stop the hybrid system.

●

Turn on the emergency flashers. (

P. 652)

If you have a flat tire

Your vehicle is equipped with a spare tire. The flat tire can be replaced with
the spare tire.
For details about tires:

P. 611

WARNING

■

If you have a flat tire
Do not continue driving with a flat tire.

Driving even a short distance with a flat tire can damage the tire and the wheel beyond

repair, which could result in an accident.

Before jacking up the vehicle

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8-2. Steps to take in an emergency

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

RX450h

: Documentation relating to the wheel lock key, such as the registration and I.D. card, is

inside the glove box.

Location of the spare tire, jack and tools

Jack handle
Wheel nut wrench
Spare tire

Wheel lock key

(if equipped)

Jack

2
3

4
5

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RX450hL

Jack handle
Wheel nut wrench
Spare tire

Jack
Towing eyelet
Adapter socket

2
3

4
5
6

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8-2. Steps to take in an emergency

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WARNING

■

Using the tire jack
Observe the following precautions.

Improper use of the tire jack may cause the vehicle to suddenly fall off the jack, leading

to death or serious injury.

●

Do not use the tire jack for any purpose other than replacing tires or installing and

removing tire chains.

●

Only use the tire jack that comes with this vehicle for replacing a flat tire.

Do not use it on other vehicles, and do not use other tire jacks for replacing tires on

this vehicle.

●

Put the jack properly in its jack point.

●

Do not put any part of your body under the vehicle while it is supported by the jack.

●

Do not start the hybrid system or drive the vehicle while the vehicle is supported by

the jack.

●

Do not raise the vehicle while someone is inside.

●

When raising the vehicle, do not put an object on or under the jack.

●

Do not raise the vehicle to a height greater than that required to replace the tire.

●

Use a jack stand if it is necessary to get under the vehicle.

●

When lowering the vehicle, make sure that there is no-one near the vehicle. If there

are people nearby, warn them vocally before lowering.

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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.

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8-2. Steps to take in an emergency

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Secure the deck board using the hook. (

P. 544)

Disengage the hook and take out
the jack.

RX450h: Remove the wheel nut

wrench and then the jack
RX450hL: Remove the jack handle and

then the jack



RX450h
Secure the deck board using the hook. (

P. 544)

Remove the spare tire cover.

Loosen the center fastener that
secures the spare tire.

Taking out the jack

Taking out the spare tire

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Remove the deck board.
Remove the cover.

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. 682

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8-2. Steps to take in an emergency

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

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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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

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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 (RX450hL)
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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WARNING

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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. (RX450hL)

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. 112). 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

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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)

RX450h: Stow the flat tire, tire jack and all tools.
RX450hL:

P. 685

Installing the spare tire

Disc wheel
seat

Tapered portion

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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 (RX450hL)

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8-2. Steps to take in an emergency

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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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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. 717)

■

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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