seats LEXUS RX450h 2018 User Guide

46 1-1. For safe use
RX450h_RX450hL _U_OM48F85U●
A portion of a door or its surrounding area is
damaged, deformed or has had a hole made in
it, or the vehicle was involved in an accident
that was not severe enough to cause the SRS
side and curtain shield airbags to inflate. ●
The pad section of the steering wheel, dash-
board near the front passenger airbag or
lower portion of the instrument panel is
scratched, cracked, or otherwise damaged. ●
The front passenger’s se at cushion surface is
scratched, cracked, or otherwise damaged.
●
The surface of the seats with the SRS side air-
bag is scratched, crac ked, or otherwise dam-
aged.
●
The portion of the front pillars, rear pillars or
roof side rail garnishes (padding) containing
the SRS curtain shield airbags inside is
scratched, cracked, or otherwise damaged.

52 1-1. For safe use
RX450h_RX450hL _U_OM48F85UWARNING ■
Front passenger occupant classification system precautions ●
Do not recline the front passeng er seatback so far that it touches a rear seat. This may
cause the “AIR BAG OFF” indicator light to be illuminated, whic h indicates that the
SRS airbags for th e front passenger will no t activate in the even t of a severe accident.
If the seatback touches the rear seat, return the seatback to a position where it does
not touch the rear seat. Keep the front passenger seatback as upright as possible
when the vehicle is moving. Reclining the seatback excessively may lessen the effec-
tiveness of the seat belt system. ●
If an adult sits in the fron t passenger seat , the “AIR BAG ON” indicator light is illumi-
nated. If the “AIR BAG OFF” indicator is illuminated, ask the passenger to sit up
straight, well back in the seat, feet on the floor, and with the seat belt worn correctly. If
the “AIR BAG OFF” indicator still remain s illuminated, either ask the passenger to
move to the rear seat, or if that is not possible, move the fron t passenger seat fully
rearward. ●
When it is unavoidable to in stall a forward-facing child re straint system on the front
passenger seat, install the ch ild restraint system on the front passenger seat in the
proper order. ( → P. 57)●
Do not modify or remove the front seats. ●
Do not kick the front passenger seat or subject it to severe impact. Otherwise, the
SRS warning light may come on to indica te a malfunction of the front passenger
occupant classification system. In this cas e, contact your Lexus dealer immediately.●
Child restraint systems insta lled on the rear se at should not contact the front seat-
backs. ●
Do not use a seat accessory, such as a cushion and seat cover, that covers the seat
cushion surface. ●
Do not modify or replace the upholstery of the front seat. ●
Adjust the front passenger seat so that the head restraint does not touch the ceiling. If
the head restraint is left in contact with the ceiling, the system may not detect the front
passenger properly, leading to improper operation of the airbags.

54
RX450h_RX450hL _U_OM48F85U1-2. Child safety
●
It is recommended that children sit in the rear seats to avoid accidental con-
tact with the shift lever, wiper switch, etc. ●
Use the rear door child-pro tector lock or the window lock switch to avoid
children opening the door while driving or operating the power window acci-
dentally. ●
Do not let small children operate equipment which may catch or pinch body
parts, such as the power wind ow, hood, back door, seats etc.
Riding with children Observe the following precautions wh en children are in the vehicle.
Use a child restraint system appropriate for the child, until the child becomes
large enough to properly wear the vehicle’s seat belt.
WARNING
Never leave children unattended in the vehicl e, and never allow child ren to have or use
the key.
Children may be able to start the vehicle or sh ift the vehicle into neutral. There is also a
danger that children may injure themselves by playing with the windows, the moon roof
or panoramic moon roof, or other features of the vehicle. In addition, heat build-up or
extremely cold temperatures inside the vehicle can be fatal to children.

58 1-2. Child safety
RX450h_RX450hL _U_OM48F85UAnchor brack-
ets (for top
tether strap)
attachment 
Second-row seats (RX450h) 
Second-row seats (RX450hL) 
Third-row seats P. 70Installation method Page

591-2. Child safety
1
For safety and security
RX450h_RX450hL _U_OM48F85U■
When installing a child restraint system to a front passenger seat
For the safety of a child, install child restraint systems to second-row seats.
When installing child restraint system to a front passenger seat is unavoidable,
adjust the seat as follows and install the child restraint system. ●
Raise the seatback as much as
possible ●
Move the seat to the rearmost
position ●
Raise the seat to the highest posi-
tion ●
If the head restraint interferes
with the installation of the child
restraint system, and the head
restraint can be removed, remove
the head restraint If the head restraint cannot be removed, raise it to the uppermost position.When using a child restraint system
WARNING ■
When using a child restraint system
Observe the following precautions.
Failure to do so may result in death or serious injury.●
Never install a rear-facing ch ild restraint system on the front passenger seat even if
the “AIR BAG OFF” indicator lig ht is illuminated. In the even t of an accident, the force
of the rapid inflation of the front passenger airbag can cause death or serious injury to
the child if the rear-facing ch ild restraint system is inst alled on the front passenger
seat. ●
A forward-facing child restraint system ma y be installed on the front passenger seat
only when it is unavoidable. A child restraint system that requires a top tether strap
should not be used in the front passenger seat since there is no top tether strap
anchor for the front passenger seat.

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

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

711-2. Child safety
1
For safety and security
RX450h_RX450hL _U_OM48F85U■
Fixing the top tether strap to the anchor bracket (second-row seats)
Install the child restraint system in accordance to the operation manual
enclosed with the child restraint system.
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.
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. 66)
When installing th e child restraint
system with the he ad restraint being
raised, be sure to have the top tether
strap pass underneath the head
restraint. 1
Hook
Top tether strap2