LEXUS RX450h 2018 Repair Manual

611-2. Child safety
1
For safety and security
RX450h_RX450hL _U_OM48F85UA child restraint system for a small child or baby must itself be properly
restrained on the seat with the la p portion of the lap/shoulder belt.
◆ Installing child restraint system using a seat belt (child restraint lock func-
tion belt)
Install the child restraint system in accordance to the operation manual
enclosed with the child restraint system. ■
Rear-facing — Infant seat/convertible seat
Adjust the rear seat
If there is a gap between the child se at and the seatback, adjust the seat-
back angle until good contact is achieved.
Place the child restraint system
on the rear seat facing the rear 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.
Fully extend the shoulder belt and
allow it to retract to put it in lock
mode. In lock mode, the belt can-
not be extended.Child restraint system fi xed with a seat belt 1
2
3
4

62 1-2. Child safety
RX450h_RX450hL _U_OM48F85U
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.
After installing the child restraint syst em, rock it back and forth to ensure
that it is installed securely. ( → P. 66)■
Forward-facing — Convertible seat
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. 59 for the fr ont passenger seat adjustment.
When using the rear seat
If there is a gap between the child se at and the seatback, adjust the seat-
back angle until good contact is achieved.
Remove the head restraint if it
interferes with your child restraint
system. ( → P. 186)If the head restraint cannot be
removed, raise it to the uppermost
position.
Place the child restraint system
on the seat facing the front of the
vehicle. 5
6
1
2
3

631-2. Child safety
1
For safety and security
RX450h_RX450hL _U_OM48F85URun the seat belt through the
child restraint system and insert
the plate into the buckle. Make
sure that the belt is not twisted.
Fully extend the shoulder belt and
allow it to retract to put it in lock
mode. In lock mode, the belt can-
not be extended.
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.
If the child restraint has a top tether strap, follow the child restraint manu-
facturer’s operation manual regarding the installation, using the top tether
strap to latch onto the top tether strap anchor. ( → P. 70)
After installing the child restraint syst em, rock it back and forth to ensure
that it is installed securely. ( → P. 66)4
5
6
7
8

64 1-2. Child safety
RX450h_RX450hL _U_OM48F85U■
Booster seat
If installing the child restraint system to the front passenger seat is unavoid-
able, refer to P. 59 for the fr ont passenger seat adjustment.
High back type: Remove the head
restraint if it interferes with your
child restraint system. ( → P. 186)If the head restraint cannot be
removed, raise it to the uppermost
position.
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. 32)1
2
3
Booster type 
High back type
4

651-2. Child safety
1
For safety and security
RX450h_RX450hL _U_OM48F85U◆ 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 spring up due to
the rebound of the seat cushion.
Release the buckle while holding
down the child restraint system.
Since the seat belt automatically
reels itself, slowly return it to the
stowing position.

66 1-2. Child safety
RX450h_RX450hL _U_OM48F85UWARNING ■
When installing a child restraint system
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 chokin g or other serious injuries 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 restraint syst em left and right, and forward and backward to ensure
that it has been securely installed. ●
After securing a child restraint system, ne ver adjust the seat.●
When a booster seat is installed, always en sure 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 coul d fall off the child’s shoulder.●
Follow all installation instructions provided by the child restraint system manufacturer.●
When securing some types of child restraint systems in rear seats, it may not be possi-
ble to properly use the seat belts in positions next to the child restraint without inter-
fering 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 position. Failure to do so ma y result in death or serious
injury. ●
When installing a child restraint system in th e rear center seat, adjust both seat cush-
ions to the same position an d align both seatbacks at th e same angle. The seatbacks
must be adjusted to the same angle. Othe rwise, the child restra int system cannot be
securely restrained and this may cause death or serious injuries in the event of sudden
braking, sudden swerving or an accident. ■
When installing a booster seat
To prevent the belt from going into ALR lock mode, do not fully extend the shoulder
belt. ALR mode causes the belt to tighten on ly. This could cause injury or discomfort to
the child. ( → P. 33)■
Do not use a seat belt extender
If a seat belt extender is used when insta lling a child restraint 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.

671-2. Child safety
1
For safety and security
RX450h_RX450hL _U_OM48F85U■
Child restraint LATCH anchors
LATCH anchors are provided for
the outboard rear seats. (Buttons
displaying the location of the
anchors are attached to the seats.) ■
When installing in the rear outboard seats
Install the child restraint system in accordance to the operation manual
enclosed with the child restraint system.
Adjust the seat
If there is a gap between the child se at and the seatback, adjust the seat-
back angle until good contact is achieved.
Remove the head restraint if it
interferes with your child restraint
system. ( → P. 186)If the head restraint cannot be
removed, raise it to the uppermost
position.
Widen the gap between the seat cushion and seatback slightly.Child restraint system fixed with a child restraint LATCH anchor
1
2
3

68 1-2. Child safety
RX450h_RX450hL _U_OM48F85U 
With flexible lower attachments
Latch the hooks of the lower
straps onto the LATCH anchors.
For owners in Canada:
The symbol on a child restraint
system indicates the presence of
a lower connector system. 
With rigid lower attachments
Latch the buckles onto the
LATCH anchors.
For owners in Canada:
The symbol on a child restraint
system indicates the presence of
a lower connector system.
If the child restraint has a top tether strap, follow the child restraint manu-
facturer’s operation manual regarding the installation, using the top tether
strap to latch onto the top tether strap anchor. ( → P. 70) Canada only4
Canada only4
5

691-2. Child safety
1
For safety and security
RX450h_RX450hL _U_OM48F85UAfter installing the child restraint syst em, rock it back and forth to ensure
that it is installed securely. ( → P. 66)■
When installing in the rear center seat
There are no LATCH anchors behind th e rear center seat. However, the
inboard LATCH anchors of the outboard seats, which are 18.1 in. (460 mm)
apart, can be used if the child restrain t system manufacturer’s instructions per-
mit use of those anchors with the anchor spacing stated.
Child restraint systems with rigid lower attachments cannot be installed in the
center seat. This type of child restraint system can only be installed in the out-
board seat. ■
Laws and regulations pertaining to anchors
The LATCH system conforms to FMVSS225 or CMVSS210.2.
Child restraint systems conforming to FMV SS213 or CMVSS213 specifications can be
used.
This vehicle is designed to conform to SAE J1819.
WARNING ■
When installing a child restraint system
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 ca ught behind the child restraint system.●
Follow all installation instructions provided by the child restraint system manufacturer.●
Never attach two child restrain t system attach ments to the same anchor. In a collision,
one anchor may not be strong enough to hold two child restraint system attachments
and may break.
If the LATCH anchors are already in use, use the seat belt to inst all a child restraint
system in the center seat. ●
When securing some types of child restraint systems in rear seats, it may not be possi-
ble to properly use the seat belts in positions next to the child restraint without inter-
fering 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 position. Failure to do so ma y result in death or serious
injury. ●
When installing a child restraint system in th e rear center seat, adjust both seat cush-
ions to the same position an d align both seatbacks at th e same angle. The seatbacks
must be adjusted to the same angle. Othe rwise, the child restra int 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 adjusted, reconfirm the security of the child restraint system.6

70 1-2. Child safety
RX450h_RX450hL _U_OM48F85U■
Anchor brackets (for top tether strap)
Anchor brackets are provided for the following seats:
Using an anchor bracket (for top tether strap) 
Second-row seats (RX450h) 
Second-row seats (RX450hL)
Third-row left side seat Anchor brackets Anchor brackets
Anchor brackets