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711-1. For safe use
1
For safety and security
IS300h_EE(OM53C61E)
■Forward-facing Child seat
Remove the head restraint if it
interferes with your child restraint
system.
Place the child restraint system
on the seat facing the front of the
vehicle.
Run the seat belt through the
child restraint system and insert
the plate into the buckle. Make
sure that the belt is not twisted.
If your child restraint system is not
equipped with a lock-off (a seat belt
locking feature), secure the child
restraint system using a locking clip.
After installing the child restraint system, rock it back and forth to ensure that
it is installed securely.
1
2
3
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Page 72 of 612
721-1. For safe use
IS300h_EE(OM53C61E)
■Junior seat
Place the child restraint system
on the seat facing the front of the
vehicle.
Sit the child in the child restraint
system. Fit the seat belt to the
child restraint system according
to the manufacturer’s instructions
and insert the plate into the
buckle. Make sure that the belt is
not twisted.
Check that the shoulder belt is cor-
rectly positioned over the child’s
shoulder and that the lap belt is as
low as possible. (→P. 3 8 )
Push the buckle release button and fully
retract the seat belt.
1
2
Removing a child restraint installed with a seat belt
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741-1. For safe use
IS300h_EE(OM53C61E)
Remove the head restraint if it inter-
feres with your child restraint system.
Secure the child restraint system
using the seat belt or ISOFIX rigid
anchors.
Open the anchor bracket cover,
latch the hook onto the anchor
bracket and tighten the top strap.
Make sure the top strap is securely
latched.
■When installing a child restraint system
You need a locking clip to install the child restraint system. Follow the instructions pro-
vided by the manufacturer of the system. If your child restraint system does not provide a
locking clip, you can purchase the following item from any authorized Lexus dealer or
repairer, or another duly qualified and equipped professional:
Locking clip for child restraint system
(Part No. 73119-22010)
Child restraint systems with a top strap
1
2
3
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Page 75 of 612

751-1. For safe use
1
For safety and security
IS300h_EE(OM53C61E)
CAUTION
■When installing a child restraint system
Follow the directions given in the child restraint system installation manual and fix the
child restraint system securely in place.
If the child restraint system is not correctly fixed in place, the child or other passengers
may be seriously injured or even killed in the event of a sudden braking, sudden swerv-
ing or an accident.
●If the driver’s seat interferes with the child
restraint system and prevents it from being
attached correctly, attach the child restraint
system to the right-hand rear seat (left-hand
drive vehicles) or the left-hand rear seat
(right-hand drive vehicles).
●Adjust the front passenger seat so that it does
not interfere with the child restraint system.
●When installing a forward-facing child
restraint system on the front passenger seat,
move the seat as far back as possible.
Failure to do so may result in death or serious
injury if the airbags deploy (inflate).
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761-1. For safe use
IS300h_EE(OM53C61E)
CAUTION
■When installing a child restraint system
●Never use a rear-facing child restraint system
on the front passenger seat when the airbag
manual on-off switch is on. (→P. 5 4 )
The force of the rapid inflation of the front
passenger airbag can cause death or serious
injury to children in the event of an accident.
There is a label(s) on the passenger side sun
visor, indicating it is forbidden to attach a
rear-facing child restraint system to the front
passenger seat.
Details of the label(s) are shown in the illus-
tration below.
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771-1. For safe use
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For safety and security
IS300h_EE(OM53C61E)
CAUTION
■When installing a child restraint system
●If child restraint system regulations exist in the country where you reside, please con-
tact any authorized Lexus dealer or repairer, or another duly qualified and equipped
professional for the child restraint system installation.
●When a junior seat is installed, always ensure that the shoulder belt is positioned
across the center of the child’s shoulder. The belt should be kept away from the child’s
neck, but not so that it could fall off the child’s shoulder. Failing to do so may result in
death or serious injury in the event of sudden braking, sudden swerving or an acci-
dent.
●Ensure that the belt and plate are securely locked and the seat belt is not twisted.
●Shake the child restraint system left and right, and forward and backward to ensure
that it has been securely installed.
●After securing a child restraint system, never adjust the seat.
●Follow all installation instructions provided by the child restraint system manufacturer.
■To correctly attach a child restraint system to the anchors
When using the lower anchors, be sure that there are no foreign objects around the
anchors and that the seat belt is not caught behind the child restraint system. Make sure
the child restraint system is securely attached, or it may cause death or serious injury to
the child or other passengers in the event of a sudden braking, sudden swerve or an
accident.
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Page 142 of 612

1423-2. Opening, closing and locking the doors and trunk
IS300h_EE(OM53C61E)
■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. 544)
■Conditions affecting the operation of the smart entry & start system or wireless remote
control
→P. 1 5 1
■Customization
Settings (e.g. unlocking function using a key) can be changed.
(Customizable features: →P. 5 7 3 )
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.
■When using the wireless remote control and operating the power windows and moon
roof
Operate the power window or moon roof after checking to make sure that there is no
possibility of any passenger having any of their body parts caught in the window or
moon roof. Also, do not allow children to operate the wireless remote control. It is pos-
sible for children and other passengers to get caught in power window and moon roof.
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1673-3. Adjusting the seats
3
Operation of each component
IS300h_EE(OM53C61E)
→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 seatback lock
release knob. Make sure that the red marking
is not visible.
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