remove LEXUS RX450H 2019 User Guide

711-2. Child safety
1
For safety and security
RX450h_RX450hL_U
■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
HookTop tether strap
2

721-2. Child safety
RX450h_RX450hL_U
■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 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.
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.
■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.
1
Hook
Top tether strap
2

761-3. Hybrid system
RX450h_RX450hL_U
■Regenerative braking
In the following situations, kinetic energy is converted to electric energy and decelera-
tion force can be obtained in conjunction with the recharging of the hybrid battery (trac-
tion battery).
●The accelerator pedal is released while driving with the shift lever in D or S.
●The brake pedal is depressed while driving with the shift lever in D or S.
■EV indicator
■Conditions in which the gasoline engine may not stop
The gasoline engine starts and stops automati cally. However, it may not stop automati-
cally in the following conditions:
●During gasoline engine warm-up
●During hybrid battery (traction battery) charging
●When the temperature of the hybrid battery (traction battery) is high or low
●When the heater is switched on
■Charging the hybrid battery (traction battery)
As the gasoline engine charges the hybrid battery (traction battery), the battery does not
need to be charged from an ou tside source. However, if the vehicle is left parked for a
long time the hybrid battery (traction batter y) will slowly discharge. For this reason, be
sure to drive the vehicle at least once every few months for at least 30 minutes or 10
miles (16 km). If the hybrid battery (traction battery) beco mes fully discharged and you
are unable to start the hybrid system, contact your Lexus dealer.
■Charging the 12-volt battery
 P. 698
■After the 12-volt battery has discharged or when the terminal has been removed and
installed during exchange, etc.
The gasoline engine may not stop even if the vehicle is being driven by the hybrid battery
(traction battery). If this continues fo r a few days, contact your Lexus dealer.
The EV indicator comes on when the vehicle is
driven using only the el
ectric motor (traction
motor) or the gasoline engine is stopped.

801-3. Hybrid system
RX450h_RX450hL_U
■If a warning light comes on, a warning message is displayed, or the 12-volt battery is dis-
connected
The hybrid system may not start. In this case, try to start the system again. If the “READY”
indicator does not come on, contact your Lexus dealer.
■Running out of fuel
When the vehicle has run out of fuel and the hybrid system cannot be started, refuel the
vehicle with at least enough gasoline to make the low fuel level warning light ( P. 662)
go off. If there is only a small amount of fu el, the hybrid system may not be able to start.
(The standard amount of fuel is about 2.9 gal. [11.0 L, 2.4 Imp.gal.], when the vehicle is on
a level surface. This value may vary when the vehicle is on a slope. Add extra fuel when
the vehicle is inclined.)
■Electromagnetic waves
●High voltage parts and cables on hybrid ve hicles incorporate electromagnetic shield-
ing, and therefore emit approximately the same amount of electromagnetic waves as
conventional gasoline powered vehicles or home electronic appliances.
●Your vehicle may cause sound interference in some third party-produced radio parts.
■Hybrid battery (traction battery)
The hybrid battery (traction battery) has a li mited service life. The lifespan of the hybrid
battery (traction battery) can change in acco rdance with driving style and driving condi-
tions.
WARNING
■High voltage precautions
This vehicle has high voltage DC and AC sy stems as well as a 12-volt system. DC and
AC high voltage is very dangerous and can cause severe burns and electric shock that
may result in death or serious injury.
●Never touch, disassemble, remove or replace the high voltage parts, cables or their
connectors.
●The hybrid system will become hot after starting as the system uses high voltage. Be
careful of both the high voltage and the high temperature, and always obey the warn-
ing labels attached to the vehicle.
●Never try to open the service plug access
hole located under the rear seat. The service
plug is used only when the vehicle is serviced
and is subject to high voltage.

811-3. Hybrid system
1
For safety and security
RX450h_RX450hL_U
WARNING
■Road accident cautions
Observe the following precautions to reduce the risk of death or serious injury:
●Pull your vehicle off the road, shift the shift lever to P, apply the parking brake, and
turn the hybrid system off.
●Do not touch the high voltage parts, cables and connectors.
●If electric wires are exposed inside or ou tside your vehicle, an electric shock may
occur. Never touch exposed electric wires.
●If a fluid leak occurs, do not touch the flui d as it may be strong alkaline electrolyte
from the hybrid battery (traction battery). If it comes into contact with your skin or
eyes, wash it off immediately with a large amount of water or, if possible, boric acid
solution. Seek immedi ate medical attention.
●If a fire occurs in the hybrid vehicle, leave the vehicle as soon as possible. Never use a
fire extinguisher that is not meant for el ectric fires. Using even a small amount of
water may be dangerous.
●If your vehicle needs to be towed, do so wi th all four wheels raised. If the wheels con-
nected to the electric motor (traction motor) are on the ground when towing, the
motor may continue to generate elec tricity. This may cause a fire. (P. 654)
●Carefully inspect the ground under the vehicl e. If you find that liquid has leaked onto
the ground, the fuel system 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
Lexus dealer. Do not dispose of the battery yourself.
Unless the battery is properly collected, th e following may occur, resulting in death
or serious injury:
• The hybrid battery may be illegally dispos ed of or dumped, and it is hazardous to
the environment or someone may touch a high voltage part, resulting in an electric
shock.
• The hybrid battery is intended to be used exclusively with your hybrid vehicle. 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 elec-
trolyte 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 high 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 bat-
tery is not disposed of properly, it may cause electric shock that can result in death or
serious injury.

851-4. Theft deterrent system
1
For safety and security
RX450h_RX450hL_U
For vehicles sold in Canada
WARNING
■Certifications for the immobilizer system
Changes or modifications not expressly approved by the party responsible for compli-
ance could void the user’s authority to operate the equipment.
NOTICE
■To ensure the system operates correctly
Do not modify or remove the system. If mo dified or removed, the proper operation of
the system cannot be guaranteed.

871-4. Theft deterrent system
1
For safety and security
RX450h_RX450hL_U
■System maintenance
The vehicle has a maintenance-free type alarm system.
■Items to check before locking the vehicle
To prevent unexpected triggering of the alarm and vehicle theft, make sure of the follow-
ing:
●Nobody is in the vehicle.
●The windows and moon roof or panoramic mo on roof are closed before the alarm is
set.
●No valuables or other personal items are left in the vehicle.
■Triggering of the alarm
The alarm may be triggered in the following situations:
(Stopping the alarm deactivates the alarm system.)
■Alarm-operated door lock
In the following cases, depending on the si tuation, the door may automatically lock to
prevent improper entry into the vehicle:
●When a person remaining in the vehicle un locks the door and the alarm is activated.
●While the alarm is activated, a person remaining in the vehicle unlocks the door.
●When recharging or replacing the 12-volt battery
●A person inside the vehicle opens a door or
hood, or unlocks the vehicle.
●The 12-volt battery is recharged or replaced
when the vehicle is locked. ( P. 698)
NOTICE
■To ensure the system operates correctly
Do not modify or remove the system. If mo dified or removed, the proper operation of
the system cannot be guaranteed.

1222. Instrument cluster
RX450h_RX450hL_U
■Head-up display
The head-up display may seem dark or hard to see when viewed through sunglasses,
especially pola rized sunglasses.
Adjust the brightness of the head-up display or remove your sunglasses.
■When the 12-volt battery is disconnected
The customize settings of the head-up display will be reset.
■Display brightness
The brightness of the head-up display can be adjusted on of the multi-information
display. Also, it is automatically adju sted according to the ambient brightness.
■Enabling/disabling of the head-up display
If the head-up display is disabled, it will remain disabled when the power switch is turned
off then back to ON mode.
■Automatic adjustment of the head-up display position
A desired head-up display position can be entered to memory and recalled automati-
cally by the driving position memory system. ( P. 181)
■Street name display (vehicle s with a navigation system)
Only street names which are included in the map data will be displayed.
WARNING
■Before using the head-up display
●Check that the position and brightness of the head-up display image does not inter-
fere with safe driving. Inco rrect adjustment of the image’s position or brightness may
obstruct the driver’s view and lead to an acc ident, resulting in death or serious injury.
●Do not continuously look at the head-up di splay while driving as you may fail to see
pedestrians, objects on the road, etc. ahead of the vehicle.
■Caution for changing settings of the head-up display
As the hybrid system needs to be operating while changing the settings of the head-up
display, ensure that the vehicle is parked in a place with adequate ventilation. In a
closed area such as a garage, exhaust gases including harmful carbon monoxide (CO)
may collect and enter the vehicle. This may lead to death or a serious health hazard.

1333-1. Key information
3
Operation of each component
RX450h_RX450hL_U
To take out the mechanical key, push
the release button and take the key out.
The mechanical key can only be
inserted in one direction, as the key only
has grooves on one side. If the key can-
not be inserted in a lock cylinder, turn it
over and re-attempt to insert it.
After using the mechanical key, store it
in the electronic key. Carry the mechan-
ical key together with the electronic key.
If the electronic key battery is depleted
or the entry function does not operate
properly, you will need the mechanical
key. ( P. 692)
■Panic mode
■When required to leave the vehicle’s key with a parking attendant
Lock the glove box as circumstances demand. ( P. 534)
Remove the mechanical key for your own use and provide the attendant with the elec-
tronic key only.
■If you lose your mechanical keys
New genuine mechanical keys can be made by your Lexus dealer using another
mechanical key and the key number stamped on your key number plate. Keep the plate
in a safe place such as your wallet, not in the vehicle.
■When riding in an aircraft
When bringing an electronic key onto an aircraft, make sure you do not press any but-
tons on the electronic key while inside the airc raft cabin. If you are carrying an electronic
key in your bag, etc., ensure that the butt ons are not likely to be pressed accidentally.
Pressing a button may cause the electronic key to emit radio waves that could interfere
with the operation of the aircraft.
Using the mechanical key
When is pressed for longer than about
one second, an alarm will sound intermittently
and the vehicle lights will flash to deter any per-
son from trying to break into or damage your
vehicle.
To stop the alarm, press any button on the elec-
tronic key.

1373-2. Opening, closing and locking the doors
3
Operation of each component
RX450h_RX450hL_U
■Operation signals
Doors:
A buzzer sounds and the emergency flashers flash to indicate that the doors have been
locked/unlocked. (Locked: Once; Unlocked: Twice)
Windows and moon roof or panoramic moon roof:
A buzzer sounds.
■Security feature
If a door is not opened within approximately 60 seconds after the vehicle is unlocked, the
security feature automatically locks the vehicle again.
■When the door cannot be locked by the lock sensor on the surface of the door handle
■Door lock buzzer
If an attempt to lock the doors is made when a door is not fully closed, a buzzer sounds
continuously for 5 seconds. Fully close the d oor to stop the buzzer, and lock the vehicle
once more.
■Setting the alarm
Locking the doors will set the alarm system. ( P. 86)
■If the smart access system with push-button start or the wireless remote control does
not operate properly
●Use the mechanical key to lock and unlock the doors. ( P. 692)
●Replace the key battery with a new one if it is depleted. ( P. 630)
When the door cannot be locked even if the
lock sensor on the surface of the door handle is
touched by a finger, touch the lock sensor with
the palm.
When gloves are being worn, remove the
gloves.