rear LEXUS RX450H 2019 Owner's Guide

621-2. Child safety
RX450h_RX450hL_U
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 system, 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.
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631-2. Child safety
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For safety and security
RX450h_RX450hL_U
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.
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 system, rock it back and forth to ensure
that it is installed securely. ( P. 66)
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661-2. Child safety
RX450h_RX450hL_U
WARNING
■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 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 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 the same angle. The seatbacks
must be adjusted to the same angle. Othe rwise, 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 shoulder
belt. ALR mode causes the belt to tighten only. 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
■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
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691-2. Child safety
1
For safety and security
RX450h_RX450hL_U
After installing the child restraint system, 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 restraint system attachments 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 install 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 the same angle. The seatbacks
must be adjusted to the same angle. Othe rwise, 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 adjusted, reconfirm the security of the child restraint system.
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731-2. Child safety
1
For safety and security
RX450h_RX450hL_U
WARNING
■When installing a child restraint system
Observe the following precautions.
Failure to do so may result in death or serious injury.
●Firmly attach the top tether strap and make sure that the belt is not twisted.
●Do not attach the top strap to anything other than the anchor bracket of the seat the
child restraint system is installed to.
●Follow all installation instructions provided by the child restraint system manufacturer.
●When installing the child restraint system with the head restraint being raised, after
the head restraint has been raised and then the anchor bracket has been fixed, do not
lower the head restraint.
●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 the same angle. The seatbacks
must be adjusted to the same angle. Othe rwise, 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 adjusted, reconfirm the security of the child restraint system.
NOTICE
■Anchor brackets (for top tether strap)
When not in use, make certain to close the lid. If it remains open, the lid may be dam-
aged.

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RX450h_RX450hL_U1-3. Hybrid system
The illustration is an example for explan
ation and may differ from the actual item.
Gasoline engine
Front electric motor (traction motor)
Rear electric motor (traction motor)
Hybrid system features
Your vehicle is a hybrid vehicle. It has characteristics different from conven-
tional vehicles. Be sure you are closely familiar with the characteristics of your
vehicle, and operate it with care.
The hybrid system combines the use of a gasoline engine and an electric
motor (traction motor) according to driving conditions, improving fuel effi-
ciency and reducing exhaust emissions.
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771-3. Hybrid system
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For safety and security
RX450h_RX450hL_U
■Sounds and vibrations specific to a hybrid vehicle
There may be no engine sound or vibration even though the vehicle is able to move with
the “READY” indicator is illuminated. For safety, make sure to shift the shift lever to P and
apply the parking brake when parked.
The following sounds or vibrations may occu r when the hybrid system is operating and
are not a malfunction:
●Motor sounds may be heard from the engine compartment.
●Sounds may be heard from the hybrid battery (traction battery) behind the rear seats
when the hybrid system starts or stops.
●Relay operating sounds such as a snap or so ft clank will be emitted from the hybrid bat-
tery (traction battery), behind the rear se ats, 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 transmission wh en the gasoline engine starts or stops,
when driving at low spee ds, or during idling.
●Engine sounds may be heard when accelerating sharply.
●Sounds may be heard due to regenerative braking when the brake pedal is depressed
or as the accelerator pedal is released.
●Vibration may be felt when the ga soline engine starts or stops.
●Cooling fan sounds may be heard from th e air intake vents under the rear seats.
■Vehicle proximity notification system
In the following cases, the vehicle proximity notification system may be difficult for sur-
rounding people to hear.
●In very noisy areas
●In the wind or the rain
Also, as the vehicle proximity notification system is installed on the front of the vehicle, it
may be more difficult to hear from the re ar of the vehicle compared to the front.
■Maintenance, repair, recycling, and disposal
Contact your Lexus dealer regarding mainte nance, repair, recycling and disposal. Do
not dispose of the vehicle yourself.
■Customization
Some functions can be customized. ( P. 736)

781-3. Hybrid system
RX450h_RX450hL_U
The illustration is an example for explanation and may differ from the actual item.
Hybrid system precautions
Take care when handling the hybrid system, as it is a high voltage system
(about 650 V at maximum) as well as contains parts that become extremely
hot when the hybrid system is operating. Obey the warning labels attached to
the vehicle.
Warning label
Hybrid battery (traction battery)
Rear electric motor (traction motor)
Service plug
High voltage cables (orange) Front electric motor (traction
motor)
Power control unit
Air conditioning compressor1
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791-3. Hybrid system
1
For safety and security
RX450h_RX450hL_U
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.
*: RX450h
When a certain level of impact is detect ed by the impact sensor, the emergency
shut off system blocks the high voltage current and stops the fuel pump to mini-
mize the risk of electrocution and fuel leakage. If the emergency shut off system
activates, your vehicle will not restart. To restart the hybrid system, contact your
Lexus dealer.
A message is automatically displayed wh en a malfunction occurs in the hybrid
system or an improper operation is attempted.
If a warning message is shown on the
multi-information display, read the
message and follow the instructions.
( P. 667)
Hybrid battery (traction battery) air intake/discharge vents
Air intake vents
Air discharge vents*
Emergency shut off system
Hybrid warning message