2021 LEXUS RX450h seats

481-2. Child safety
*: The third-row seats are not equipped with Child restraint LATCH anchors.
■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 unavoid-
able, adjust the seat as follows and
install the child restraint system.

Move the seat to the rearmost posi-
Anchor brackets (for top
tether strap) attachment
Second-row seats (RX450h):
P.57
Second-row seats (RX450hL):
Third-row seats (RX450hL)*:
Installation methodPage
When using a child restraint sys-
tem

541-2. Child safety
■Child restraint LATCH anchors
LATCH anchors are provided for the
outboard second-row seats. (Buttons
displaying the location of the anchors
are attached to the seats.)
WARNING
●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 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.
●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 se at, adjust both seat
cushions to the same position and
align both seatbacks at the same
angle. The seatbacks must be adjusted
to 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.
■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.28)
■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

551-2. Child safety
1
For safety and security
■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.
2Remove the head restraint if it inter-
feres with your child restraint sys-
tem. ( P.145)
If the head restrain t cannot be removed,
raise it to the uppermost position.
3 Widen the gap between the seat
cushion and seatback slightly.
With flexible lower attachments
4 Latch the hooks of the lower
attachments onto the LATCH
anchors.
For owners in Canada:
The symbol on a child restraint sys- tem indicates the presence of a
lower connector system.
Canada only
With rigid lower attachments
4 Latch the buckles onto the LATCH
anchors.
For owners in Canada:
The symbol on a child restraint sys-
A
A

561-2. Child safety
tem indicates the presence of a
lower connector system.
Canada only
5 If 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.57)
6 After installing the child restraint
system, rock it back and forth to
ensure that it is installed securely.
(P.54)
■When installing in the rear center
seat
There are no LATCH anchors behind
the rear center seat. However, the
inboard LATCH anchors of the out-
board seats, which are 18.1 in. (460
mm) apart, can be used if the child
restraint system manufacturer’s
instructions permit 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
FMVSS213 or CMVSS213 specifications
can be used.
This vehicle is designed to conform to SAE
J1819.
A
A
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.
●Never attach two child restraint system
attachments to the same anchor. In a
collision, one anchor may not be
strong enough to hold two child
restraint system at tachments and may
break.
If the LATCH anchors are already in
use, use the seat belt to install a child
restraint system in the center seat.

571-2. Child safety
1
For safety and security
■Anchor brackets (for top tether
strap)
Anchor brackets are provided for the
following seats:
Use anchor brackets when fixing the
top tether strap.
Second-row seats (RX450h)
Anchor brackets
Top tether strap
Second-row seats (RX450hL)
Anchor brackets
Top tether strap
Third-row left side seat*
Anchor brackets
Top tether strap
*: The third-row seats are not equipped with Child restra int LATCH anchors.
WARNING
●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. The seatbacks must be adjusted
to the same angle. Otherwise, the
child restraint system cannot be
securely restrained and this may cause
death or serious injuri es 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.
Using an anchor bracket (for top
tether strap)
A
B
A
B
A
B

581-2. Child safety
■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 sys-
tem.
1 Remove the head restraint if it inter-
feres with your child restraint sys-
tem. ( P.145)
If the head restrain t cannot be removed,
raise it to the uppermost position.
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.54)
When installing the ch ild restraint system
with the head restraint being raised, be
sure to have the top tether strap pass
underneath the head restraint.
Hook
Top tether strap
■Fixing the top tether strap to the
anchor bracket (third-row left side
seat)
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.145)
If the head restraint cannot be removed,
raise it to the uppermost position.
2 Latch the hook onto the anchor
bracket and tighten the top tether
strap.
Make sure the top tether strap is securely
latched. ( P.54)
When installing the ch ild restraint system
with the head restraint being raised, be
sure to have the top tether strap pass
underneath the head restraint.
Hook
Top tether strapA
B
A
B

681-4. Hybrid system
seats when the hybrid system starts or
stops.
●Relay operating sounds such as a snap or
soft clank will be emitted from the hybrid
battery (traction battery), behind the rear
seats, when the hybrid system is started
or stopped.
●Sounds from the hybrid system may be
heard when the back door is open.
●Sounds may be heard from the transmis-
sion when the gasoline engine starts or
stops, when driving at low speeds, or
during idling.
●Engine sounds may be heard when
accelerating sharply.
●Sounds may be heard due to regenera-
tive braking when the brake pedal is
depressed or as the accelerator pedal is
released.
●Vibration may be felt when the gasoline
engine starts or stops.
●Cooling fan sounds may be heard from
the air intake vents under the rear seats.
■Maintenance, repair, recycling, and dis-
posal
Contact your Lexus dealer regarding main-
tenance, repair, recycling and disposal. Do
not dispose of the vehicle yourself.
■Customization
Some functions can be customized.
(  P.480)
When driving with the gasoline engine
stopped, a sound, which changes in
accordance with the driving speed, will
be played in order to warn people
nearby of the vehicle’s approach. This
sound may be heard inside the vehicle.
The sound will stop when the vehicle
speed exceeds approximately 22 mph
(35 km/h).
■Acoustic Vehicle Alerting System
In the following cases, the Acoustic Vehicle
Alerting System may be difficult for sur-
rounding people to hear.
●In very noisy areas
●In the wind or the rain
Also, as the Acoustic Vehicle Alerting Sys-
tem is installed on the fr ont of the vehicle, it
may be more difficult to hear from the rear
of the vehicle compared to the front.
Acoustic Vehicle Alerting Sys-
tem

711-4. Hybrid system
1
For safety and security
The air intake/discharge vents for the
hybrid battery (traction battery) are
located under the rear seats and in lug-
gage compartment respectively. If the
air intake vents are blocked, it could
lead to a reduction in hybrid battery
(traction battery) output.
WARNING
●If your vehicle needs to be towed, do
so with all four wheels raised. If the
wheels connected to the electric
motor (traction motor) are on the
ground when towing, the motor may
continue to generate electricity. This
may cause a fire. ( P.413)
●Carefully inspect the ground under the
vehicle. If you find that liquid has
leaked onto the ground, the fuel sys-
tem may have been damaged. Leave
the vehicle as soon as possible.
■Hybrid battery (traction battery)
●Never resell, hand over or modify the
hybrid battery. To prevent accidents,
hybrid batteries that have been
removed from a disposed vehicle are
collected through your Lexus dealer.
Do not dispose of the battery yourself.
Unless the battery is properly col-
lected, the following may occur, result-
ing in death or serious injury:
• The hybrid battery may be illegally dis- posed of or dumped, and it is hazard-
ous to the environment or someone
may touch a high voltage part, result-
ing in an electric shock.
• The hybrid battery is intended to be used exclusively with your hybrid vehi-
cle. If the hybrid battery is used outside
of your vehicle or modified in any way,
accidents such as electric shock, heat
generation, smoke generation, an
explosion and electrolyte leakage may
occur.
When reselling or handing over your
vehicle, the possibility of an accident is
extremely high because the person
receiving the vehicle may not be aware
of these dangers.
●If your vehicle is disposed of without
the hybrid battery having been
removed, there is a danger of serious
electric shock if hi gh voltage parts,
cables and their connectors are
touched. In the event that your vehicle
must be disposed of, the hybrid battery
must be disposed of by your Lexus
dealer or a qualified service shop. If
the hybrid battery is not disposed of
properly, it may cause electric shock
that can result in death or serious
injury.
NOTICE
■Hybrid battery (tra ction battery) air
intake/discharge vents
Do not carry large amounts of water
such as water cooler bottles in the vehi-
cle. If water spills onto the hybrid battery
(traction battery), the battery may be
damaged. Have the vehicle inspected by
your Lexus dealer.
Hybrid battery (traction bat-
tery) air intake/discharge vents