LEXUS IS 300 (2019 year). Instruction - part 27

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6-2. Using the air conditioning system

IS350 AWD/IS350/IS300 AWD/IS300_U

■

Using automatic mode
Fan speed is adjusted automatically according to the temperature setting and the ambi-

ent conditions.
Therefore, the fan may stop for a while until warm or cool air is ready to flow immediately
after 

 is pressed or “AUTO” is selected.

■

Using the voice command system (vehicles with a navigation system)
Air conditioning system can be operated using voice commands. For details, refer to the

“NAVIGATION SYSTEM OWNER’S MANUAL”.

■

Fogging up of the windows
The windows will easily fog up when the humidity in the vehicle is high. Turning 

(“A/C”) on will dehumidify the air from the outlets and defog the windshield effectively.

●

If you turn 

 (“A/C”) off, the windows may fog up more easily.

●

The windows may fog up if the recirculated air mode is used.

■

Outside/recirculated air mode

●

When driving on dusty roads such as tunnels or in heavy traffic, set the outside/recircu-

lated air mode button to the recirculated air mode. This is effective in preventing out-

side air from entering the vehicle interior. During cooling operation, setting the

recirculated air mode will also cool the vehicle interior effectively.

●

Outside/recirculated air mode may automatically switch depending on the tempera-

ture setting or the inside temperature.

■

When the outside temperature exceeds 75

F (24C) and the air conditioning system

is on

●

In order to reduce the air conditioning power consumption, the air conditioning system

may switch to recirculated air mode automatically. This may also reduce fuel consump-

tion.

●

Recirculated air mode is selected as a default mode when the engine switch is turned to

IGNITION ON mode.

●

It is possible to switch to outside air mode at any time by pressing 

.

■

Operation of the air conditioning system in Eco drive mode
In Eco drive mode, the air conditioning system is controlled as follows to prioritize fuel

efficiency:

●

Engine speed and compressor operation controlled to restrict heating/cooling capac-

ity

●

Fan speed restricted when automatic mode is selected

To improve air conditioning performance, perform the following operations:

●

Adjust the fan speed

●

Turn off Eco drive mode

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IS350 AWD/IS350/IS300 AWD/IS300_U

■

When the outside temperature falls to nearly 32

F (0C)

The dehumidification function may not operate even when 

 is pressed or “A/C” is

selected.

■

Ventilation and air conditioning odors

●

To let fresh air in, set the air conditioning system to the outside air mode.

●

During use, various odors from inside and outside the vehicle may enter into and accu-

mulate in the air conditioning system. This may then cause odor to be emitted from the

vents.

●

To reduce potential odors from occurring:
• It is recommended that the air conditioning system be set to outside air mode prior

to turning the vehicle off.

• The start timing of the blower may be delayed for a short period of time immediately

after the air conditioning system is started in automatic mode.

■

Air conditioning filter
P. 500

■

Customization
Settings (e.g. A/C Auto switch operation) can be changed. 

(Customizable features: 

P. 619)

WARNING

■

To prevent the windshield from fogging up 

●

Do not use 

 during cool air operation in extremely humid weather. The differ-

ence between the temperature of the outside air and that of the windshield can cause

the outer surface of the windshield to fog up, blocking your vision.

■

To prevent burns

●

Do not touch the rear view mirror surfaces when the outside rear view mirror defog-

gers are on.

●

Do not touch the glass at lower part of the windshield or to the side of the front pillars

when the windshield wiper de-icer is on.

NOTICE

■

To prevent battery discharge
Do not leave the air conditioning system on longer than necessary when the engine is

stopped.

●

Do not place anything on the instrument

panel which may cover the air outlets. Other-

wise, air flow may be obstructed, preventing

the windshield defoggers from defogging.

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6-2. Using the air conditioning system

IS350 AWD/IS350/IS300 AWD/IS300_U

Turn the heated steering wheel on/off

The indicator light comes on when the

heated steering wheel is operating.

●

The heated steering wheel can be used when the engine switch is in IGNITION ON

mode.

●

The heated steering wheel will automatically turn off after about 30 minutes.

Heated steering wheel



/seat heaters



/seat ventilators





: If equipped

Heated steering wheel and seat heaters heat the side grips of the steering
wheel and seats, respectively. Seat ventilators maintain good airflow by blow-
ing air from the seats.

WARNING

●

Care should be taken to prevent injury if anyone in the following categories comes in

contact with the steering wheel or seats when the heater is on:
• Babies, small children, the elderly, the sick and the physically challenged

• Persons with sensitive skin

• Persons who are fatigued

• Persons who have taken alcohol or drugs that induce sleep (sleeping drugs, cold

remedies, etc.)

●

Observe the following precautions to prevent the minor burns or overheating
• Do not cover the seat with a blanket or cushion when using the seat heater.

• Do not use seat heater more than necessary. 

NOTICE

●

Do not put heavy objects that have an uneven surface on the seat and do not stick

sharp objects (needles, nails, etc.) into the seat.

●

To prevent battery discharge, do not use the functions when the engine is off.

Heated steering wheel 

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IS350 AWD/IS350/IS300 AWD/IS300_U

Each time the switch is pressed, the
intensity of the seat heater changes and
the level indicator lights (amber) light
as follows: 
Hi (3 segments lit) 

 Mid (2 segments

lit) 

 Lo (1 segment lit)  Off

■

The seat heaters can be used when
The engine switch is in IGNITION ON mode.

■

Seat heater timer control 
To enable seat heater timer control, press and hold the driver and front passenger seat

heater switches at the same time until a buzzer sounds once. If a seat heater is turned on

while seat heater timer control is enabled, the intensity of the seat heater will automati-

cally change from Hi

MidLo. 

The timing of the change in seat heater intensity differs depending on the temperature

inside the cabin, etc. when the seat heater is operating.
To disable seat heater timer control, press and hold the driver and front passenger seat

heater switches at the same time until a buzzer sounds twice.

Each time the switch is pressed, the
intensity of the seat ventilator changes
and the level indicator lights (green)
light as follows: 
Hi (3 segments lit) 

 Mid (2 segments

lit) 

 Lo (1 segment lit)  Off

■

The seat ventilators can be used when
The engine switch is in IGNITION ON mode.

■

Air conditioning system-linked control mode
When a seat ventilator is set to Hi, the fan speed of the seat ventilator may increase

according to the fan speed of the air conditioning system.

Seat heaters 

Type A

Type B

Seat ventilators 

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IS350 AWD/IS350/IS300 AWD/IS300_U

6-3. Using the interior lights

Interior lights list

Outer foot lights
Front interior light

 (

P. 429)

Front personal lights (

P. 429)

Inside door handle lights
Rear interior light

(

P. 429)

Rear personal lights

(

P. 429)

Power window switch lights
Door courtesy lights
Footwell lights

1

2
3
4
5

6
7
8
9

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6-3. Using the interior lights

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IS350 AWD/IS350/IS300 AWD/IS300_U

Turns the light on/off
Turns the door position on/off

Turns the light on/off

Interior lights

1

2

Personal lights



Front



Rear

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6-3. Using the interior lights

IS350 AWD/IS350/IS300 AWD/IS300_U

■

The interior lights and personal lights can be operated when
The interior lights and personal lights can be used regardless of the engine switch mode. 

However, when the engine switch is turned off, they can be used only when the battery

protection function is not operating.

■

Battery protection function
To prevent the battery from being discharged, approximately 20 minutes after the

engine switch is turned off, the power supplied to the interior lights, personal lights, and

other lights will be cut off automatically. (If the interior lights, etc. are left on when the

engine switch is turned off, they will be turned off automatically.)
To turn the interior lights, etc. back on, turn the engine switch to ACCESSORY or IGNI-

TION ON mode or operate the interior light switch until the interior lights turn on.
If any of the lights are illuminated automatically due to the illuminated entry system, the

battery protection function will be canceled.

■

Illuminated entry system
The lights automatically turn on/off according to engine switch mode, the presence of the

electronic key, whether the doors are locked/unlocked, and whether the doors are

opened/closed.

■

Customization
Setting (e.g. the time elapsed before lights turn off) can be changed. 

(Customizable features: 

P. 613)

NOTICE

To prevent battery discharge, do not leave the lights on longer than necessary when the

engine is off.

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IS350 AWD/IS350/IS300 AWD/IS300_U

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6-4. Using the storage features

List of storage features

Glove box

 (

P. 432)

Bottle holders

 (

P. 433)

Cup holders

(

P. 433)

Console box

 (

P. 432)

WARNING

●

Do not leave glasses, lighters or spray cans in the storage spaces, as this may cause

the following when cabin temperature becomes high:
• Glasses may be deformed by heat or cracked if they come into contact with other

stored items.

• Lighters or spray cans may explode. If they come into contact with other stored

items, the lighter may catch fire or the spray can may release gas, causing a fire

hazard.

●

When driving or when the storage compartments are not in use, keep the lids closed. 

In the event of sudden braking or sudden swerving, an accident may occur due to an

occupant being struck by an open lid or the items stored inside.

1

2

3
4

432

6-4. Using the storage features

IS350 AWD/IS350/IS300 AWD/IS300_U

Open (press the button)
Unlock with the mechanical key
Lock with the mechanical key

●

The glove box light turns on when the engine switch is in ACCESSORY or IGNITION

ON mode.

●

The trunk opener main switch is located in the glove box. (

P. 131)

Push the knob.

Lift  by  hand  to  fully  open  the  console

box.

Glove box

1

2
3

●

The insert inside the glove box can be

removed.

Console box

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6-4. Using the storage features

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IS350 AWD/IS350/IS300 AWD/IS300_U

■

Cup holders

■

Bottle holders

●

When storing a bottle, close the cap.

●

The bottle may not be stored depending on its size or shape.

●

The rubber mats at the bottom of the front cup holders can be removed.

Cup holders/bottle holders



Front



Rear

To open, pull down the armrest and
press the button and release the rear
cup holder on the armrest.

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6-4. Using the storage features

IS350 AWD/IS350/IS300 AWD/IS300_U

WARNING

●

Do not place anything other than cups or aluminum cans in the cup holders and bot-

tle in the bottle holders. Other items may be thrown out of the holders in the event of

an accident or sudden braking, causing injury.

●

To prevent burns, cover hot drinks when placed in the cup holders.

NOTICE

To prevent damage to the rear cup holder, stow the cup holder before stowing the arm-

rest.

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6-4. Using the storage features

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IS350 AWD/IS350/IS300 AWD/IS300_U

Raise the hooks when needed.

The cargo hooks are provided for

securing loose items.

Loosen the belt
Tighten the belt

Trunk features

Cargo hooks

WARNING

To avoid injury, always return the cargo hooks to their stowed positions when not in use.

First-aid kit storage belt

1

2

436

6-4. Using the storage features

IS350 AWD/IS350/IS300 AWD/IS300_U

Hold the hook and lift up the lug-
gage mat.

Secure the luggage mat using the
hook.

Luggage mat

1

2

NOTICE

When closing the trunk door, do not leave the luggage mat lever hooked on the edge

of the trunk. The luggage mat may get damaged.

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IS350 AWD/IS350/IS300 AWD/IS300_U

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6-5. Using the other interior features

To set the visor in the forward posi-
tion, flip it down.
To set the visor in the side position,
flip down, unhook, and swing it to the
side.

Slide the cover to open.

The light turns on when the cover is

opened.



Vehicles with a Lexus Display Audio system

The clock can be adjusted by pressing the buttons.

Pressing and holding will move the
clock hands backward.
Pressing and holding will move the
clock hands forward.

Other interior features

Sun visors

1

2

Vanity mirrors

Clock

1

2

438

6-5. Using the other interior features

IS350 AWD/IS350/IS300 AWD/IS300_U



Vehicles with a navigation system

The GPS clock's time is automatically
adjusted by utilizing GPS time informa-
tion. 

For details, refer to “NAVIGATION

SYSTEM OWNER’S MANUAL”.

The power outlet can be used for 12 V accessories that run on less than 10 A.
Open the lid.

The power outlet can be used when the engine switch is in ACCESSORY or IGNITION

ON mode.

Power outlet

NOTICE

●

To avoid the damaging the power outlet, close the power outlet lid when the power

outlet is not in use. Foreign objects or liquids that enter the power outlet may cause a

short circuit.

●

To prevent blown fuse, do not use an accessory that uses more than 12 V 10 A.

●

To prevent battery discharge, do not use the power outlet longer than necessary

when the engine is off.

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6-5. Using the other interior features

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IS350 AWD/IS350/IS300 AWD/IS300_U

Fold down the armrest for use.

The rear sunshade can be raised and lowered.
Raise/lower

●

The rear sunshade can be used when the engine switch is in IGNITION ON mode.

●

The rear sunshade can be operated for approximately 1 minute even after the engine

switch is turned to ACCESSORY mode or turned off.

Armrest

NOTICE

To prevent damage to the armrest, do not apply too much load on the armrest.

Rear sunshade (if equipped)