LEXUS IS 350 (2019 year). Instruction - part 33

520

8-2. Steps to take in an emergency

IS350 AWD/IS350/IS300 AWD/IS300_U

Take out the towing eyelet. (

P. 560)

Remove the eyelet cover using a flat-
head screwdriver. 

To protect the bodywork, place a rag

between the screwdriver and the vehi-

cle body as shown in the illustration.

Insert the towing eyelet into the hole
and tighten partially by hand.

Tighten down the towing eyelet
securely using a wheel nut wrench
or hard metal bar.

Securely attach cables or chains to the towing eyelet.

Take care not to damage the vehicle body.

Enter the vehicle being towed and start the engine.

If the engine does not start, turn the engine switch to IGNITION ON mode.

Shift the shift lever to N and release the parking brake. 
When the shift lever cannot be shifted: 

P. 196

Emergency towing procedure

1

2

3

4

5

6

7

521

8-2. Steps to take in an emergency

8

When trouble 

ari

ses

IS350 AWD/IS350/IS300 AWD/IS300_U

■

While towing
If the engine is not running, the power assist for the brakes and steering will not function,

making steering and braking more difficult.

■

Wheel nut wrench
Wheel nut wrench is installed in the trunk. (

P. 560)

WARNING

Observe the following precautions. 

Failure to do so may result in death or serious injury.

■

When towing the vehicle



2WD models



AWD models

Be sure to transport the vehicle with all four

wheels raised off the ground. If the vehicle is

towed with the tires contacting the ground, the

drivetrain and related parts may be damaged

or an accident may occur due to a change in

direction of the vehicle.

Be sure to transport the vehicle with all four

wheels raised off the ground. If the vehicle is

towed with the tires contacting the ground, the

drivetrain or related parts may be damaged,

the vehicle may fly off the truck.

522

8-2. Steps to take in an emergency

IS350 AWD/IS350/IS300 AWD/IS300_U

WARNING

■

While towing

●

When towing using cables or chains, avoid sudden starts, etc. which place excessive

stress on the towing eyelets, cables or chains. The towing eyelets, cables or chains

may become damaged, broken debris may hit people, and cause serious damage.

●

Do not turn the engine switch off.

There is a possibility that the steering wheel is locked and cannot be operated.

■

Installing towing eyelet to the vehicle
Make sure that towing eyelet is installed securely.

If not securely installed, towing eyelet may come loose during towing.

NOTICE

■

To prevent damage to the vehicle when towing using a wheel-lift type truck

●

Do not tow the vehicle from the rear when the engine switch is off. The steering lock

mechanism is not strong enough to hold the front wheels straight.

●

When raising the vehicle, ensure adequate ground clearance for towing at the oppo-

site end of the raised vehicle. Without adequate clearance, the vehicle could be dam-

aged while being towed.

■

To prevent damage to the vehicle when towing with a sling-type truck
Do not tow with a sling-type truck, either from the front or rear.

■

To prevent damage to the vehicle during emergency towing
Do not secure cables or chains to the suspension components.

523

8-2. Steps to take in an emergency

8

When trouble 

ari

ses

IS350 AWD/IS350/IS300 AWD/IS300_U

●

Fluid leaks under the vehicle.
(Water dripping from the air conditioning after use is normal.)

●

Flat-looking tires or uneven tire wear

●

Engine coolant temperature gauge needle continually points higher than nor-
mal.

●

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 feeling, pedal almost touches the floor

If you think something is wrong

If 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

524

8-2. Steps to take in an emergency

IS350 AWD/IS350/IS300 AWD/IS300_U

Follow the procedure below to restart the engine after the system is activated.

Turn the engine switch to ACCESSORY mode or turn it off.
Restart the engine.

Fuel pump shut off system

To minimize the risk of fuel leakage when the engine stalls or when an airbag
inflates upon collision, the fuel pump shut off system stops the supply of fuel to
the engine.

NOTICE

■

Before starting the engine
Inspect the ground under the vehicle.

If you find that fuel has leaked onto the ground, the fuel system has been damaged and

is in need of repair. Do not restart the engine.

1

2

525

8-2. Steps to take in an emergency

8

When trouble 

ari

ses

IS350 AWD/IS350/IS300 AWD/IS300_U

If a warning light turns on or a warning buzzer 
sounds

Calmly perform the following actions if any of the warning lights comes on or
flashes. If a light comes on or flashes, but then goes off, this does not necessar-
ily indicate a malfunction in the system. However, if this continues to occur,
have the vehicle inspected by your Lexus dealer.

Warning light and warning buzzer list

Warning light

Warning light/Details/Actions

(U.S.A.)

(Canada)

Brake system warning light 

Indicates that:

• The brake fluid level is low; or

• The brake system is malfunctioning

 Immediately stop the vehicle in a safe place and contact your

Lexus dealer. Continuing to drive the vehicle may be dangerous.

(If equipped)

Charging system warning light

Indicates a malfunction in the vehicle’s charging system

 Immediately stop the vehicle in a safe place and contact your

Lexus dealer.

(U.S.A.)

(Canada)

Malfunction indicator lamp

Indicates a malfunction in:

• The electronic engine control system;

• The electronic throttle control system; or

• The electronic automatic transmission control system

 Have the vehicle inspected by your Lexus dealer immediately.

SRS warning light

Indicates a malfunction in:

• The SRS airbag system;

• The front passenger occupant classification system; or

• The seat belt pretensioner system

 Have the vehicle inspected by your Lexus dealer immediately.

(U.S.A.)

(Canada)

ABS warning light

Indicates a malfunction in:

• The ABS; or

• The brake assist system

 Have the vehicle inspected by your Lexus dealer immediately.

526

8-2. Steps to take in an emergency

IS350 AWD/IS350/IS300 AWD/IS300_U

(U.S.A.)

(Canada)

Parking brake warning light (warning buzzer)

*

1

Indicates that the parking brake is engaged

 Release the parking brake.

Electric power steering system warning light (warning buzzer)

Indicates a malfunction in the EPS (Electric Power Steering) sys-

tem

 Have the vehicle inspected by your Lexus dealer immediately.

LDA (Lane Departure Alert) indicator

If the LDA indicator is illuminated:

Indicates a malfunction in the LDA (Lane Departure Alert with

steering control) system.

 Check the warning message displayed on the multi-information

display. (

P. 532)

If the LDA indicator flashes:

Indicates that the vehicle has deviated from the lane (while the

LDA [Lane Departure Alert with steering control] system is oper-

ating)

 Check the area around the vehicle and return the vehicle to

between the lane lines.

(Flashes or illuminates)

PCS warning light

Indicates a malfunction in the PCS (Pre-Collision System) or that

the system is temporarily unavailable due to the vehicle being

extremely hot/cold, or dirt around a front sensor, etc. 

(

P. 239, 542)

 Follow the instructions displayed on the multi-information dis-

play. (

P. 239, 542)

If the PCS (Pre-Collision System) or VSC (Vehicle Stability Con-

trol) system is disabled, the PCS warning light will illuminate.

 P. 239

Slip indicator

Indicates a malfunction in:

• The VSC (Vehicle Stability Control) system;

• The TRAC (Traction Control) system; or

• The hill-start assist control system

The light will flash when the VSC or the TRAC system is operating.

 Have the vehicle inspected by your Lexus dealer immediately.

Warning light

Warning light/Details/Actions

527

8-2. Steps to take in an emergency

8

When trouble 

ari

ses

IS350 AWD/IS350/IS300 AWD/IS300_U

(Flashes)

(If equipped)

“AFS OFF” indicator

Indicates a malfunction in the adaptive front-lighting system

 Have the vehicle inspected by your Lexus dealer immediately.

Open door warning light (warning buzzer)

*

2

Indicates that a door or the trunk is not fully closed

 Check that all the doors and the trunk are closed.

Low fuel level warning light

Indicates that remaining fuel is approximately 2.6 gal. (10 L, 2.2

Imp. gal.) or less

 Refuel the vehicle.

Driver’s and front passenger’s seat belt reminder light (warning
buzzer)

*

3

Warns the driver and/or front passenger to fasten their seat belts

 Fasten the seat belt.

If the front passenger’s seat is occupied, the front passenger’s

seat belt also needs to be fastened to make the warning light

(warning buzzer) turn off.

Rear passengers’ seat belt reminder lights (warning buzzer)

*

3

Warns the rear passengers to fasten their seat belts

 Fasten the seat belt.

Master warning light

A buzzer sounds and the warning light comes on and flashes to

indicate that the master warning system has detected a malfunc-

tion.

 P. 532

Tire pressure warning light

When the light comes on:

Low tire inflation pressure such as

• Natural causes (

P. 529)

• Flat  tire  (

P. 559)

 Adjust the tire inflation pressure to the specified level.

The light will turn off after a few minutes. In case the light does

not turn off even if the tire inflation pressure is adjusted, have the

system checked by your Lexus dealer.

When the light comes on after blinking for 1 minute:

Malfunction in the tire pressure warning system

 Have the system checked by your Lexus dealer.

Warning light

Warning light/Details/Actions

528

8-2. Steps to take in an emergency

IS350 AWD/IS350/IS300 AWD/IS300_U

*

1

: Parking brake engaged warning buzzer:

P. 536

*

2

: Open door warning buzzer:

P. 534

*

3

: Driver’s seat belt buzzer:

The driver’s seat belt buzzer sounds to alert the driver that his or her seat belt is not

fastened. Once the engine switch is turned to IGNITION ON mode, the buzzer

sounds for 6 seconds. If the vehicle reaches a speed of 12 mph (20 km/h), the buzzer

sounds once. If the seat belt is still unfastened after 24 seconds, the buzzer will sound

intermittently for 6 seconds. Then, if the seat belt is still unfastened, the buzzer will

sound in a different tone for 90 more seconds.
Front passenger’s seat belt buzzer:
The front passenger’s seat belt buzzer sounds to alert the front passenger that his or

her seat belt is not fastened. The buzzer sounds once if the vehicle reaches a speed of

12 mph (20 km/h). If the seat belt is still unfastened after 24 seconds, the buzzer will

sound intermittently for 6 seconds. Then, if the seat belt is still unfastened, the buzzer

will sound in a different tone for 90 more seconds.
Rear passenger’s seat belt buzzer:
The rear passenger’s seat belt buzzer sounds to alert the rear passenger that his or

her seat belt is not fastened. The buzzer sounds once if the vehicle reaches a speed of

12 mph (20 km/h). If the seat belt is still unfastened after 24 seconds, the buzzer will

sound intermittently for 6 seconds. Then, if the seat belt is still unfastened, the buzzer

will sound in a different tone for 24 more seconds.

■

SRS warning light
This warning light system monitors the airbag sensor assembly, front impact sensors, side

impact sensors (front door), side impact sensors (front), side impact sensors (rear),

driver’s seat position sensor, driver’s seat belt buckle switch, front passenger occupant

classification system, “AIR BAG ON” indicator light, “AIR BAG OFF” indicator light,

front passenger’s seat belt buckle switch, seat belt pretensioner assemblies, airbags,

interconnecting wiring and power sources. (

P. 37) 

■

Front passenger detection sensor, seat belt reminder and warning buzzer
If luggage is placed on the front passenger seat, the front passenger detection sensor

may cause the warning light to flash and the warning buzzer to sound even if a passenger

is not sitting in the seat.

■

If the malfunction indicator lamp comes on while driving
First check the following:

●

Is the fuel tank empty?

If it is, fill the fuel tank immediately.

●

Is the fuel tank cap loose?

If it is, tighten it securely.

The light will go off after several driving trips.

If the light does not go off even after several trips, contact your Lexus dealer as soon as

possible.

529

8-2. Steps to take in an emergency

8

When trouble 

ari

ses

IS350 AWD/IS350/IS300 AWD/IS300_U

■

Electric power steering system warning light (warning buzzer)
When the battery charge becomes insufficient or the voltage temporarily drops, the

electric power steering system warning light may come on and the warning buzzer may

sound.

■

When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level. Pushing the tire

pressure warning reset switch will not turn off the tire pressure warning light.

■

The tire pressure warning light may come on due to natural causes
The tire pressure warning light may come on due to natural causes such as natural air

leaks and tire inflation pressure changes caused by temperature. In this case, adjusting

the tire inflation pressure will turn off the warning light (after a few minutes).

■

When a tire is replaced with the spare tire
The compact spare tire is not equipped with a tire pressure warning valve and transmit-

ter. If a tire goes flat, the tire pressure warning light will not turn off even though the flat

tire has been replaced with the spare tire. 

■

Conditions that the tire pressure warning system may not function properly
P. 490

■

If the tire pressure warning light frequently comes on after blinking for 1 minute
If the tire pressure warning light frequently comes on after blinking for 1 minute when the

engine switch is turned to IGNITION ON mode, have it checked by your Lexus dealer.

■

Warning buzzer
In some cases, the buzzer may not be heard due to being in a noisy location or audio

sound.

WARNING

■

If both the ABS and the brake system warning lights remain on
Stop your vehicle in a safe place immediately and contact your Lexus dealer. The vehi-

cle will become extremely unstable during braking, and the ABS system may fail, which

could cause an accident resulting in death or serious injury.

■

When the electric power steering system warning light comes on
The steering wheel may become extremely heavy.

When steering wheel operations are heavier than usual, grip the steering wheel firmly

and operate it using more force than usual.

■

If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause a loss of

vehicle control and result in death or serious injury.

●

Stop your vehicle in a safe place as soon as possible. Adjust the tire inflation pressure

immediately. 

●

If the tire pressure warning light comes on even after tire inflation pressure adjust-

ment, it is probable that you have a flat tire. Check the tires. If a tire is flat, change it

with the spare tire and have the flat tire repaired by the nearest Lexus dealer.

●

Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you could lose

control of the steering wheel or the brakes.

■

If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.

530

8-2. Steps to take in an emergency

IS350 AWD/IS350/IS300 AWD/IS300_U

WARNING

■

Maintenance of the tires
Each tire, including the spare (if provided), should be checked monthly when cold and

inflated to the inflation pressure recommended by the vehicle manufacturer on the

vehicle placard or tire inflation pressure label (tire and load information label). (If your

vehicle has tires of a different size than the size indicated on the vehicle placard or tire

inflation pressure label [tire and load information label], you should determine the

proper tire inflation pressure for those tires.)
As an added safety feature, your vehicle has been equipped with a tire pressure moni-

toring system (TPMS-tire pressure warning system) that illuminates a low tire pressure

telltale (tire pressure warning light) when one or more of your tires is significantly

under-inflated. Accordingly, when the low tire pressure telltale (tire pressure warning

light) illuminates, you should stop and check your tires as soon as possible, and inflate

them to the proper pressure. Driving on a significantly under-inflated tire causes the

tire to overheat and can lead to tire failure. Under-inflation also reduces fuel efficiency

and tire tread life, and may affect the vehicle’s handling and stopping ability.
Please note that the TPMS (tire pressure warning system) is not a substitute for proper

tire maintenance, and it is the driver’s responsibility to maintain correct tire pressure,

even if under-inflation has not reached the level to trigger illumination of the TPMS low

tire pressure telltale (tire pressure warning light).
Your vehicle has also been equipped with a TPMS (tire pressure warning system) mal-

function indicator to indicate when the system is not operating properly. The TPMS

(tire pressure warning system) malfunction indicator is combined with the low tire pres-

sure telltale (tire pressure warning light). When the system detects a malfunction, the

telltale will flash for approximately one minute and then remain continuously illumi-

nated. This sequence will continue upon subsequent vehicle start-ups as long as the

malfunction exists. When the malfunction indicator is illuminated, the system may not

be able to detect or signal low tire pressure as intended.
TPMS (tire pressure warning system) malfunctions may occur for a variety of reasons,

including the installation of replacement or alternate tires or wheels on the vehicle that

prevent the TPMS (tire pressure warning system) from functioning properly. Always

check the TPMS (tire pressure warning system) malfunction telltale after replacing one

or more tires or wheels on your vehicle to ensure that the replacement or alternate

tires and wheels allow the TPMS (tire pressure warning system) to continue to function

properly.

531

8-2. Steps to take in an emergency

8

When trouble 

ari

ses

IS350 AWD/IS350/IS300 AWD/IS300_U

NOTICE

■

To ensure the tire pressure warning system operates properly 
Do not install tires with different specifications or makers, as the tire pressure warning

system may not operate properly.

532

8-2. Steps to take in an emergency

IS350 AWD/IS350/IS300 AWD/IS300_U

Master warning light
The master warning light also comes on or flashes in order to indicate that a
message is currently being displayed on the multi-information display.
Multi-information display

If any of the warning lights come on again after the following actions have been
performed, contact your Lexus dealer.

If a warning message is displayed

If a warning is shown on the multi-information display, stay calm and perform
the following actions:



Except F SPORT models



F SPORT models (when the main
meter is in the center position) 



F SPORT models (when the main
meter is in the right-side position) 

1

2

533

8-2. Steps to take in an emergency

8

When trouble 

ari

ses

IS350 AWD/IS350/IS300 AWD/IS300_U

Warning message and warning buzzer list

Warning message

Details/Actions

Indicates that there is a high possibility of a frontal colli-

sion, or that the pre-collision braking function is operat-

ing

A buzzer also sounds.

 Avoid the collision by decelerating using the brakes

or taking other evasive actions.

Indicates that the engine was stopped with the shift lever

not in P

A buzzer also sounds.

 Shift the shift lever to P.

Indicates that the engine was stopped while driving

A buzzer also sounds.

 Stop the vehicle in a safe place such as the shoulder

of a road.

Indicates that your vehicle is nearing the vehicle ahead

(in vehicle-to-vehicle distance control mode)

A buzzer also sounds.

 Slow the vehicle by applying the brakes.

(Flashes)

(Flashes)

534

8-2. Steps to take in an emergency

IS350 AWD/IS350/IS300 AWD/IS300_U

Indicates that the vehicle has deviated from the lane

(while the LDA [Lane Departure Alert with steering con-

trol] system is operating)

The lane line on the side the vehicle has deviated from

flashes in amber.

A buzzer also sounds.

 Check around the vehicle and back to inside of the

lane lines.

Indicates that:

• The brake fluid level is low; or

• The brake system is malfunctioning

A buzzer also sounds.

 Immediately stop the vehicle in a safe place and

contact your Lexus dealer. Continuing to drive the

vehicle may be dangerous.

Indicates that one or more of the doors is not fully closed

The system also indicates which doors are not fully

closed.

If the vehicle reaches a speed of 3 mph (5 km/h),

 flashes and a buzzer sounds to indicate

that the door(s) are not yet fully closed.

 Make sure that all the doors are closed.

Warning message

Details/Actions

(Flashes)

(U.S.A.)

(Canada)

(Flashes)

535

8-2. Steps to take in an emergency

8

When trouble 

ari

ses

IS350 AWD/IS350/IS300 AWD/IS300_U

Indicates that the hood is not fully closed

If the vehicle reaches a speed of 3 mph (5 km/h),

 flashes and a buzzer sounds to indicate

that the hood is not yet fully closed.

 Close the hood.

Indicates that the trunk is not fully closed

If the vehicle reaches a speed of 3 mph (5 km/h),

 flashes and a buzzer sounds to indicate

that the trunk is not yet fully closed.

 Close the trunk.

(If equipped)

Indicates a malfunction in the intuitive parking assist-sen-

sor

The assist-sensors flash.

A buzzer also sounds.

 Have the vehicle inspected by your Lexus dealer.

(If equipped)

Indicates that an intuitive parking assist sensor is dirty or

covered with ice

A buzzer also sounds.

 Clean the sensor.

Warning message

Details/Actions