Page 142 of 628
1403-2. Opening, closing and locking the doors and trunk
IS300h_EE(OM53B95E)
The door cannot be opened from
inside the vehicle when the lock is
set.
Unlock
Lock
These locks can be set to prevent
children from opening the rear
doors. Push down on each rear door
switch to lock both rear doors.
The following functions can be set or canceled:
For instructions on customizing, refer to P. 575.
Rear door child-protector lock
1
2
Automatic door locking and unlocking systems
FunctionOperation
Speed linked door locking func-
tionAll the doors are locked when the vehicle
speed is approximately 20 km/h (12 mph) or
higher.
Shift position linked door lock-
ing functionShifting the shift lever out of P locks all the
doors.
Shift position linked door
unlocking functionAll doors are automatically unlocked when
shifting the shift lever to P.
Driver's door linked door unlock-
ing functionAll doors are automatically unlocked when
driver’s door is opened.
Page 144 of 628

1423-2. Opening, closing and locking the doors and trunk
IS300h_EE(OM53B95E)
Impact detection door lock release system
In the event that the vehicle is subject to a strong impact, all the doors are
unlocked. Depending on the force of the impact or the type of accident, however,
the system may not operate.
Using the mechanical key
The doors can also be locked and unlocked with the mechanical key. (P. 548)
Conditions affecting the operation of the smart entry & start system or wireless
remote control
P. 151
Customization
Settings (e.g. unlocking function using a key) can be changed.
(Customizable features: P. 575)
CAUTION
To prevent an accident
Observe the following precautions while driving the vehicle.
Failure to do so may result in a door opening and an occupant being thrown out
of the vehicle, resulting in death or serious injury.
Ensure that all doors are properly closed.
Do not pull the inside handle of the doors while driving.
Be especially careful with the front doors, as the doors may be opened even if
the inside lock buttons are in locked position.
Set the rear door child-protector locks when children are seated in the rear
seats.
Page 149 of 628
1473-2. Opening, closing and locking the doors and trunk
3
Operation of each component
IS300h_EE(OM53B95E)
CAUTION
Observe the following precautions.
Failure to do so may result in death or serious injury.
Before driving
Make sure that the trunk lid is fully closed. If the trunk lid is not fully closed,
it may open unexpectedly while driving and hit near-by objects or luggage in
the trunk may be thrown out, causing an accident.
Do not allow children to play in the trunk.
If a child is accidentally locked in the trunk, they could suffer from heat
exhaustion, suffocation or other injuries.
Do not allow a child to open or close the trunk lid.
Doing so may cause the trunk lid to open unexpectedly, or cause the child’s
hands, head, or neck to be caught by the closing trunk lid.
Important points while driving
Never let anyone sit in the trunk. In the event of sudden braking or a collision,
they are susceptible to death or serious injury.
Page 169 of 628
1673-3. Adjusting the seats
3
Operation of each component
IS300h_EE(OM53B95E)
P. 1 4 5
Luggage security system
CAUTION
Observe the following precautions. Failure to do so may result in death or serious
injury.
When folding the rear seatbacks down
Do not fold the seatbacks down while driving.
Stop the vehicle on level ground, set the parking brake and shift the shift lever
to P.
Do not allow anyone to sit on a folded seatback or in the trunk while driving.
Do not allow children to enter the trunk.
After returning the rear seatback to the upright position
Check that the seat belts are not twisted or caught in the seatback.
Make sure that the seatback is securely
locked in position by lightly pushing it
back and forth.
If the seatback is not securely locked, the
red marking will be visible on the seat-
back lock release knob. Make sure that
the red marking is not visible.
Page 186 of 628
184
IS300h_EE(OM53B95E)3-5. Opening, closing the windows and moon roof
The power windows can be opened and closed using the switches.
Operating the switch moves the windows as follows:
Closing
One-touch closing
*
Opening
One-touch opening
*
*
: To stop the window partway, operate
the switch in the opposite direction.
Press the switch to lock the passen-
ger window switches.
The indicator will come on.
Use this switch to prevent children
from accidentally opening or closing
a passenger window.
Power windows
Opening and closing procedures
1
2
3
4
Window lock switch
Indicator
Page 188 of 628

1863-5. Opening, closing the windows and moon roof
IS300h_EE(OM53B95E)
Door lock linked window operation
The power windows can be opened and closed using the mechanical key.*
(P. 548)
The power windows can be opened and closed using the wireless remote con-
trol.* (P. 136)
*: These settings must be customized at any authorized Lexus dealer or repairer,
or another duly qualified and equipped professional.
When the 12-volt battery is disconnected
The window lock switch is disabled. If necessary, press the window lock switch
after reconnecting the 12-volt battery.
Power windows open warning buzzer
The buzzer sounds and a message is shown on the multi-information display in
the instrument cluster when the power switch is turned off and the driver’s door
is opened with the power windows open.
Customization
Settings (e.g. linked door lock operation) can be changed.
(Customizable features: P. 575)
CAUTION
Observe the following precautions.
Failure to do so may result in death or serious injury.
Closing the windows
Check to make sure that all passengers do not have any part of their body in a
position where it could be caught when a window is being operated.
Do not allow children to operate the power windows.
Closing a power window on someone can cause serious injury, and in some
instances, even death.
Jam protection function
Never use any part of your body to intentionally activate the jam protection
function.
The jam protection function may not work if something gets caught just
before the window fully closes.
Page 192 of 628

1903-5. Opening, closing the windows and moon roof
IS300h_EE(OM53B95E)
Moon roof open warning buzzer
The buzzer sounds and a message is shown on the multi-information display in
the instrument cluster when the power switch is turned off and the driver’s door
is opened with the moon roof open.
Customization
Settings (e.g. linked door lock operation) can be changed.
(Customizable features: P. 575)
CAUTION
Observe the following precautions.
Failure to do so may cause death or serious injury.
Opening the moon roof
Do not allow any passengers to put their hands or heads outside the vehicle
while it is moving.
Do not sit on top of the moon roof.
Closing the moon roof
Check to make sure that all passengers do not have any part of their body in a
position where it could be caught when the moon roof is being operated.
Do not allow children to operate the moon roof.
Closing the moon roof on someone can cause death or serious injury.
Jam protection function
Never use any part of your body to intentionally activate the jam protection
function.
The jam protection function may not work if something gets caught just
before the moon roof fully closes.
Page 423 of 628

4096-1. Using the air conditioning system
6
Interior features
IS300h_EE(OM53B95E)
Turn the heated steering wheel on/
off
The indicator light comes on when
the heated steering wheel is operat-
ing.
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
blowing air from the seats.
CAUTION
Care should be taken to prevent injury if anyone in the following categories
comes in contact with the steering wheel and 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 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 12-volt battery discharge, do not use the functions when the hybrid
system is off.
Heated steering wheel