2021 Lexus IS350 ECU

431-2. Child safety
1
For safety and security
■When installing a child restraint
system to a front passenger seat
For the safety of a child, install child
restraint systems to a rear seats. When
installing child restraint system to a
front passenger seat is unavoidable,
adjust the seat as follows and install the
child restraint system. 
Move the seat fully rearward.
 Move the seat height to the upper
most position.
 Adjust the seatback angle to the
most upright position.
If there is a gap between the child seat and
the seatback, adjust the seatback angle
until good contact is achieved.
If the head restraint interferes with
your child restraint system, and the
head restraint can be removed,
Installation methodPage
Seat belt attachmentP.45
Child restraint LATCH
anchors attachmentP.49
Anchor brackets (for top tether strap) attachmentP.51
When using a child restraint sys-
tem

451-2. Child safety
1
For safety and security
A child restraint system for a small
child or baby must itself be properly
restrained on the seat with the lap por-
tion of the lap/shoulder belt.
■Installing child restraint system
using a seat belt (child restraint
lock function belt)
Install the child restraint system in
accordance to the operation manual
enclosed with the child restraint sys-
tem.
■Rear-facing  Infant seat/con-
vertible seat
1 Adjust the rear seat
If there is a gap between the child seat and
the seatback, adjust the seatback angle
until good contact is achieved.
2Place the child restraint system on
the rear seat facing the rear of the
vehicle.
3 Run the seat belt through the child
restraint system and insert the plate
into the buckle. Make sure that the
belt is not twisted.
4 Fully extend the shoulder belt and
allow it to retract to put it in lock
WARNING
●When a booster seat is installed,
always ensure that th e 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.
●Use child restraint system suitable to
the age and size of the child and install
it to the rear seat.
●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.
●Adjust the front passenger seat so that
it does not interfere with the child
restraint system.
Child restraint system fixed with
a seat belt

461-2. Child safety
mode. In lock mode, the belt cannot
be extended.
5 While pushing the child restraint
system down into the rear seat,
allow the shoulder belt to retract
until the child restraint system is
securely in place.
After the shoulder belt has retracted to a
point where there is no slack in the belt,
pull the belt to check that it cannot be
extended.
6After installing the child restraint
system, rock it back and forth to
ensure that it is installed securely.
(P.48)
■Forward-facing  Convertible
seat
1 Adjust the seat
When using the front passenger
seat
If installing the child restraint system to
the front passenger seat is unavoid- able, refer to P.43for the front passen-
ger seat adjustment.
When using the rear seat
If there is a gap between the child seat
and the seatback, adjust the seatback
angle until good contact is achieved.
2 Remove the head restraint if it inter-
feres with your child restraint sys-
tem. ( P.111)
3 Place the child restraint system on
the seat facing the front of the vehi-
cle.
4 Run the seat belt through the child
restraint system and insert the plate

471-2. Child safety
1
For safety and security
into the buckle. Make sure that the
belt is not twisted.
5 Fully extend the shoulder belt and
allow it to retract to put it in lock
mode. In lock mode, the belt cannot
be extended.
6 While pushing the child restraint
system into the rear seat, allow the
shoulder belt to retract until the
child restraint system is securely in
place.
After the shoulder belt has retracted to a
point where there is no slack in the belt,
pull the belt to check that it cannot be
extended.
7If the child restraint has a top tether
strap, follow the child restraint man-
ufacturer’s operation manual
regarding the installation, using the
top tether strap to latch onto the
top tether strap anchor. ( P.51)
8 After installing the child restraint
system, rock it back and forth to
ensure that it is installed securely.
(P.48)
■Booster seat
1 If installing the child restraint sys-
tem to the front passenger seat is
unavoidable, refer to P.43for the
front passenger seat adjustment.
2 Remove the head restraint if it inter-
feres with your child restraint sys-
tem. ( P.111)
3 Place the child restraint system on
the seat facing the front of the vehi-
cle.

481-2. Child safety
Booster type
High back type
4 Sit the child in the child restraint
system. Fit the seat belt to the child
restraint system according to the
manufacturer’s in structions and
insert the plate into the buckle.
Make sure that the belt is not
twisted.
Check that the shoulder belt is correctly
positioned over the child’s shoulder and
that the lap belt is as low as possible.
(  P.24)
■Removing a child restraint system
installed with a seat belt
Press the buckle release button and
fully retract the seat belt.
When releasing the buckle, the child
restraint system may sp ring up due to the
rebound of the seat cushion. Release the
buckle while holding down the child
restraint system.
Since the seat belt auto matically reels itself,
slowly return it to the stowing position.
WARNING
■When installing a child restraint sys-
tem
Observe the following precautions.
Failure to do so may result in death or
serious injury.
●Do not allow children to play with the
seat belt. If the seat belt becomes
twisted around a child’s neck, it may
lead to choking or other serious inju-
ries that could result in death.
If this occurs and the buckle cannot be
unfastened, scissors should be used to
cut the belt.
●Ensure that the belt and plate are
securely locked and the seat belt is not
twisted.
●Shake the child rest raint system left
and right, and forward and backward
to ensure that it has been securely
installed.

491-2. Child safety
1
For safety and security
■Child restraint LATCH anchors
LATCH anchors are provided for the
outboard rear seat. (Buttons displaying
the location of the anchors are
attached to the seats.)
■When installing in the rear out-
board seats
Install the child restraint system in
accordance to the operation manual
enclosed with the child restraint sys-
tem.
1 Adjust the seat
If there is a gap between the child seat and
the seatback, adjust the seatback angle
until good contact is achieved.
WARNING
●When a booster seat is installed,
always ensure that th e 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.
●Follow all installation instructions pro-
vided by the child restraint system
manufacturer.
●When securing some types of child
restraint systems in rear seats, it may
not be possible to properly use the
seat belts in position s next to the child
restraint without inte rfering with it or
affecting seat belt effectiveness. Be
sure your seat belt fits snugly across
your shoulder and low on your hips. If it
does not, or if it interferes with the
child restraint, move to a different posi-
tion. Failure to do so may result in
death or serious injury.
●When installing a child restraint system
in the rear center seat, adjust both seat
cushions to the same position and
align both seatbacks at the same
angle. Otherwise, the child restraint
system cannot be securely restrained
and this may cause death or serious
injuries in the event of sudden braking,
sudden swerving or an accident.
●If the seat is adju sted, reconfirm the
security of the child restraint system.
■When installing a booster seat
To prevent the belt from going into ALR
lock mode, do not fully extend the shoul-
der belt. ALR mode causes the belt to
tighten only. This could cause injury or
discomfort to the child. (
P.26)
■Do not use a seat belt extender
If a seat belt extender is used when
installing a child restra int system, the seat
belt will not securely hold the child
restraint system, which could cause
death or serious injury to the child or
other passengers in the event of sudden
braking, sudden swerving or an accident.
Child restraint system fixed with
a child restraint LATCH anchor

511-2. Child safety
1
For safety and security
ufacturer’s operation manual
regarding the installation, using the
top tether strap to latch onto the
top tether strap anchor. (P.51)
6 After installing the child restraint
system, rock it back and forth to
ensure that it is installed securely.
(P.48)
■Laws and regulations pertaining to
anchors
The LATCH system conforms to
FMVSS225 or CMVSS210.2.
Child restraint systems conforming to
FMVSS213 or CMVSS213 specifications
can be used.
This vehicle is designed to conform to SAE
J1819.
■Anchor brackets (for top tether
strap)
Anchor brackets are provided for each
rear seat.
Use anchor brackets when fixing the
top tether strap.
Outboard rear seats
Anchor brackets
Top tether strap
WARNING
■When installing a child restraint sys-
tem
Observe the following precautions.
Failure to do so may result in death or
serious injury.
●When using the LATCH 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.
●Follow all installation instructions pro-
vided by the child restraint system
manufacturer.
●Child restraint systems cannot be
installed in the rear center seat. Do not
install the child restraint system in the
rear center seat using the LATCH
anchors.
●When securing some types of child
restraint systems in rear seats, it may
not be possible to properly use the
seat belts in position s next to the child
restraint without interfering with it or
affecting seat belt effectiveness. Be
sure your seat belt fits snugly across
your shoulder and low on your hips. If it
does not, or if it interferes with the
child restraint, move to a different posi-
tion. Failure to do so may result in
death or serious injury.
●If the seat is adjusted, reconfirm the
security of the child restraint system.
Using an anchor bracket (for top
tether strap)
A
B

521-2. Child safety
Rear center seatAnchor bracket
Top tether strap
■Fixing the top tether strap to the
anchor bracket
Install the child restraint system in
accordance to the operation manual
enclosed with the child restraint sys-
tem.
1 Remove the head restraint if it inter-
feres with your child restraint sys-
tem. ( P.111)
2 Open the anchor bracket cover,
latch the hook onto the anchor
bracket and tighten the top tether
strap.
Make sure the top tether strap is securely
latched. ( P.48)
Outboard rear seats
Hook
Top tether strap
Rear center seat
Hook
Top tether strap
■Laws and regulations pertaining to
anchors
The LATCH system conforms to
FMVSS225 or CMVSS210.2.
Child restraint systems conforming to
FMVSS213 or CMVSS213 specifications
can be used.
This vehicle is designed to conform to SAE
J1819.
A
B
WARNING
■When installing a child restraint sys-
tem
Observe the following precautions.
Failure to do so may result in death or
serious injury.
A
B
A
B