battery LEXUS RX450h 2022 Owner's Guide

1994-3. Operating the lights and wipers
4
Driving
Doing so interferes with the sensor detect-
ing the level of ambient light and may cause
the automatic headlight system to malfunc-
tion.
■Automatic light off system
●When the headlights are on: The head-
lights and tail lights turn off 30 seconds
after the driver’s door is opened and
closed if the power switch is turned to
ACCESSORY mode or turned off. (The
lights turn off immediately if on the
key is pressed after all the doors are
closed.)
●When only the tail lights are on: The tail
lights turn off automatically if the power
switch is turned to ACCESSORY mode
or turned off and the driver’s door is
opened.
■Automatic headlight leveling system (if
equipped)
The level of the headlights is automatically
adjusted according to the number of pas-
sengers and the loading condition of the
vehicle to ensure that the headlights do not
interfere with other road users.
■Light reminder buzzer
A buzzer sounds when the power switch is
turned off or turned to ACCESSORY
mode and the driver’s door is opened while
the lights are turned on.
■Welcome lighting
If the headlight switch is turned to and
the surrounding area is dark, unlocking the
doors using the smart access system with
push-button start or wireless remote con-
trol will turn the parking lights and tail lights
on automatically.
■Windshield wiper linked headlight illu-
mination
When driving during daytime with the
headlight switch turned to , if the wind-
shield wipers are used, the headlights will
turn on automatically after several seconds
to help enhance the visibility of your vehicle.
■12-volt battery-saving function
In order to prevent the 12-volt battery of the vehicle from discharging, if the headlights
and/or tail lights are on when the power
switch is turned off
the 12-volt battery sav-
ing function will operate and automatically
turn off all the lights after approximately 20
minutes. When the power switch is turned
to ON mode, the 12-volt battery-saving
function will be disabled.
When any of the following are performed,
the 12-volt battery-saving function is
canceled once and then reactivated. All the
lights will turn off automatically 20 minutes
after the 12-volt battery-saving function has
been reactivated:
●When the headlight switch is operated
●When a door is opened or closed
■Customization
Some functions can be customized.
( P.472)
1 With the headlights on, push the
lever away from you to turn on the
high beams.
Pull the lever toward you to the center
position to turn the high beams off.
2Pull the lever toward you and
release it to flash the high beams
NOTICE
■To prevent 12-volt battery discharge
Do not leave the lights on longer than
necessary when the hy brid system is off.
Turning on the high beam head-
lights

2214-5. Using the driving support systems
4
Driving
collision with a detected object is high.
Each function is operatio nal at the following speed
●Pre-collision warning
●Pre-collision brake assist
●Pre-collision braking
The system may not operate in the following situations:
●If a 12-volt battery terminal has been disco nnected and reconnected and then the vehicle
has not been driven for a certain amount of time
●If the shift lever is in R
●When the VSC OFF indicator is illuminated (only the pre-collision warning function will
be operational)
■Object detection function
The system detects ob jects based on their
size, profile, motion, etc. However, an object
may not be detected depending on the sur-
rounding brightness and the motion, pos-
ture, and angle of the detected object,
preventing the system from operating prop-
erly. ( P.223)
The illustration shows an image of detect-
able objects.
Detectable objectsVehicle speedRelative speed between your
vehicle and object
VehiclesApprox. 7 to 110 mph (10 to
180 km/h)Approx. 7 to 110 mph (10 to
180 km/h)
Bicyclists and pedestriansApprox. 7 to 50 mph (10 to
80 km/h)Approx. 7 to 50 mph (10 to
80 km/h)
Detectable objectsVehicle speedRelative speed between your vehicle and object
VehiclesApprox. 20 to 110 mph (30
to 180 km/h)Approx. 20 to 110 mph (30
to 180 km/h)
Bicyclists and pedestriansApprox. 20 to 50 mph (30
to 80 km/h)Approx. 20 to 50 mph (30
to 80 km/h)
Detectable objectsVehicle speedRelative speed between your vehicle and object
VehiclesApprox. 7 to 110 mph (10 to
180 km/h)Approx. 7 to 110 mph (10 to
180 km/h)
Bicyclists and pedestriansApprox. 7 to 50 mph (10 to
80 km/h)Approx. 7 to 50 mph (10 to
80 km/h)

2544-5. Using the driving support systems
■The system can be operated when
●The power switch is in ON mode.
●Intuitive parking assist function is on.
●The vehicle speed is less than about 6
mph (10 km/h).
●A shift lever other than P.
■Setting the buzzer volume
The buzzer volume can be adjusted on the
multi-information display. ( P.250)
■If “Parking Assist Unavailable” is dis-
played on the multi-information display
●Water may be continuo usly flowing over
the sensor surface, such as in a heavy
rain. When the system determines that it
is normal, the system will return to nor-
mal.
●Initialization may not have been per-
formed after a battery terminal was dis-
connected and reconnec ted. Initialize the
system. ( P.254) If this message contin- ues to be displayed even after initializa-
tion, have the vehicle inspected by your
Lexus dealer.
■If “Parking Assist Unavailable Clean
Parking Assist Sensor” is displayed on
the multi-information display
A sensor may be covered with ice, snow,
dirt, etc. Remove the ice, snow, dirt, etc.,
from the sensor to return the system to nor-
mal.
Also, due to ice forming on a sensor at low
temperatures, a warn ing message may be
displayed or the sensor may not be able to
detect an object. Once the ice melts, the
system will return to normal.
■If a 12-volt battery terminal has been
disconnected and reconnected
The system needs to be initialized. To initial-
ize the system, drive the vehicle straight
ahead for 5 seconds or more at a speed of
approximately 22 mph (35 km/h) or more.
■Sensor detection information
The following situations may occur during
use.
●The sensor's detection areas are limited
to the areas around the vehicle front and
rear bumpers.
●Depending on the sh ape of the object
and other factors, the detection distance
may shorten, or detection may be impos-
sible.
●There will be a short delay between
object detection and di splay. Even at low
speeds, there is a possibility that the
object will come wi thin the sensor’s
detection areas befo re the display is
shown and the warning beep sounds.
●It might be difficult to hear the buzzer due
to the volume of the audio system or air
flow noise of the air conditioning system.
●It may be difficult to hear the buzzer if
buzzers for other systems are sounding.
■Objects which the system may not be
properly detected
The shape of the object may prevent the
sensor from detecting it. Pay particular
attention to the following objects:
●Wires, fences, ropes, etc.
WARNING
■When to disable the function
In the following situations, disable the
function as it may operate even though
there is no possibility of a collision.
●Failing to observe the warnings above.
●A non-genuine Toyota suspension
(lowered suspension, etc.) is installed.
■Notes when washing the vehicle
Do not apply intensive bursts of water or
steam to the sensor area.
Doing so may result in the sensor mal-
functioning.
●When using a high pressure washer to
wash the vehicle, do not spray the sen-
sors directly, as doing so may cause a
sensor to malfunction.
●When using steam to clean the vehicle,
do not direct steam too close to the
sensors as doing so may cause a sen-
sor to malfunction.

2704-5. Using the driving support systems
■If “Parking Support Brake Unavailable”
is displayed on the multi-information
display and the PKSB OFF indicator is
flashing
If this message is displayed only when the
shift lever is in any position other than R, a
sensor on the front or rear bumper may be
dirty. Clean the sensors and their surround-
ing area on the bumpers.
■If “Parking Assist Unavailable” and
“Parking Assist Unavailable Clean
Parking Assist Sensor” are displayed on
the multi-information display and the
PKSB OFF indicator is flashing
●A sensor may be covered with ice, snow,
dirt, etc. Remove the ice, snow, dirt, etc.,
from the sensor to return the system to
normal.
If this message is shown even after
removing dirt from the sensor, or shown
when the sensor was not dirty to begin
with, have the vehicle inspected by your
Lexus dealer.
●A sensor may be frozen. Once the ice
melts, the system will return to normal.
●Water may be continuo usly flowing over
the sensor surface, such as in a heavy
rain. When the system determines that it
is normal, the system will return to nor-
mal.
■If a 12-volt battery terminal has been
disconnected and reconnected
The system needs to be initialized. To initial-
ize the system, drive the vehicle straight
ahead for 5 seconds or more at a speed of
approximately 22 mph (35 km/h) or more.
Additionally, for vehicles with the Parking
Support Brake function, turn the steering
wheel fully to the left and right with the vehi-
cle stopped.

2844-6. Driving tips
4-6.Driving tips
When using Eco drive mode, the
torque corresponding to the accelera-
tor pedal depression amount can be
generated more smoothly than it is in
normal conditions. In addition, the
operation of the air conditioning sys-
tem (heating/cooling) will be mini-
mized, improving the fuel economy.
( P.276)
The Eco-friendly driving is possible by
keeping the indicator needle (except F
SPORT models) or bar display (F
SPORT models) of Hybrid System
Indicator within Eco area. ( P.85)
Shift the shift lever to D when stopped
at a traffic light, or driving in heavy traf-
fic, etc. Shift the shift lever to P when
parking. When using the N, there is no
positive effect on fuel consumption. In
the N, the gasoline engine operates
but electricity cannot be generated.
Also, when using the air conditioning
system, etc., the hybrid battery (trac-
tion battery) power is consumed. 
Drive your vehicle smoothly. Avoid
abrupt acceleration and decelera-
tion. Gradual acceleration and
deceleration will make more effec-
tive use of the electric motor (trac-
tion motor) without having to use
gasoline engine power.
 Avoid repeated acceleration.
Repeated acceleration consumes
hybrid battery (traction battery)
power, resulting in poor fuel con-
sumption. Battery power can be
restored by driving with the acceler-
ator pedal slightly released.
Make sure to operate the brakes gently
and in a timely manner. A greater
amount of electrical energy can be
regenerated when slowing down.
Repeated acceleration and decelera-
tion, as well as long waits at traffic
lights, will lead to bad fuel economy.
Check traffic reports before leaving
and avoid delays as much as possible.
When driving in a traffic jam, gently
release the brake pedal to allow the
vehicle to move forward slightly while
avoiding overuse of the accelerator
pedal. Doing so can help control
excessive gasoline consumption.
Hybrid vehicle driving tips
For economical and ecological
driving, pay attention to the follow-
ing points:
Using Eco drive mode
Use of Hybrid System Indicator
Shift lever operation
Accelerator pedal/brake pedal
operation
When braking
Delays

2864-6. Driving tips
Use fluids that are appropriate to
the prevailing outside temperatures.
•Engine oil
• Engine/power control unit coolant
•Washer fluid
Have a service technician inspect
the condition of the 12-volt battery.
 Have the vehicle fitted with four
snow tires or purchase a set of tire
chains for the front tires.
Ensure that all tires ar e of the specified size
and the same brand, and that chains match
the size of the tires.
Perform the following according to the
driving conditions:
 Do not try to forcibly open a window
or move a wiper that is frozen. Pour
warm water over the frozen area to
melt the ice. Wipe away the water
Winter driving tips
Carry out the necessary prepara-
tions and inspections before driving
the vehicle in winter. Always drive
the vehicle in a manner appropriate
to the prevailing weather condi-
tions.
Pre-winter preparations
WARNING
■Driving with snow tires
Observe the following precautions to
reduce the risk of accidents.
Failure to do so may result in a loss of
vehicle control and cause death or seri-
ous injury.
●Use tires of the specified size.
●Maintain the recommended level of air
pressure.
●Do not drive in excess of 75 mph (120
km/h), regardless of the type of snow
tires being used.
●Use snow tires on all, not just some
wheels.
■Driving with tire chains
Observe the following precautions to
reduce the risk of accidents.
Failure to do so may result in the vehicle
being unable to be driven safely, and may
cause death or serious injury.
●Do not drive in excess of the speed
limit specified for the tire chains being
used, or 30 mph (50 km/h), which-
ever is lower.
●Avoid driving on bumpy road surfaces
or over potholes.
●Avoid sudden acceleration, abrupt
steering, sudden braking and shifting
operations that cause sudden engine
braking.
●Slow down sufficiently before entering
a curve to ensure that vehicle control is
maintained.
●Do not use the LTA (Lane Tracing
Assist) system.
NOTICE
■Repairing or replacing snow tires
Request repairs or replacement of snow
tires from your Lexus dealer or legitimate
tire retailers.
This is because the removal and attach-
ment of snow tires affects the operation
of the tire pressure warning valves and
transmitters.
Before driving the vehicle

2904-6. Driving tips
WARNING
●Do not grip the steering wheel spokes
when driving off-road. A bad bump
could jerk the wheel and injure your
hands. Keep both hands and especially
your thumbs on the outside of the rim.
●Always check your brakes for effec-
tiveness immediately after driving in
sand, mud, water or snow.
●After driving through tall grass, mud,
rock, sand, rivers, etc., check that there
is no grass, bush, paper, rags, stone,
sand, etc. adhering or trapped on the
underbody. Clear off any such matter
from the underbody. If the vehicle is
used with these materials trapped or
adhering to the underbody, a break-
down or fire could occur.
●When driving off-road or in rugged
terrain, do not drive at excessive
speeds, jump, make sharp turns, strike
objects, etc. This may cause loss of
control or vehicle rollover causing
death or serious injury. You are also
risking expensive damage to your
vehicle’s suspension and chassis.
NOTICE
■To prevent water damage
Take all necessary sa fety measures to
ensure that water da mage to the hybrid
battery (traction battery), hybrid system
or other components does not occur.
●Water entering the engine compart-
ment may cause seve re damage to the
hybrid system. Water entering the inte-
rior may cause the hybrid battery
(traction battery) stowed under the
rear seats to short circuit.
●Water entering the hybrid transmis-
sion and rear electr ic motor (traction
motor) will cause deterioration in
transmission quality. The malfunction
indicator may come on, and the vehi-
cle may not be drivable.
●Water can wash the grease from wheel
bearings, causing rusting and prema-
ture failure, and may also enter the
hybrid transmission case, reducing the
gear oil’s lubricating qualities.
■When you drive through water
If driving through water, such as when
crossing shallow streams, first check the
depth of the water and the bottom of the
riverbed for firmness. Drive slowly and
avoid deep water.
■Inspection after off-road driving
●Sand and mud that has accumulated
around brake discs may affect braking
efficiency and may damage brake sys-
tem components.
●Always perform a maintenance
inspection after each day of off-road
driving that has taken you through
rough terrain, sand, mud, or water. For
scheduled maintenance information,
refer to the “Warranty and Services
Guide/Owner’s Manual Supple-
ment/Scheduled Maintenance”.

3025-3. Using the air conditioning system and defogger
■Main control screen
Using the touchpad of the Remote
Touch, select the button on the screen.
This system can also be operated by
the touch screen.
Vehicles with DUAL-ZONE climate
control
Sub menu
Selecting the sub menu item to switch the
main screen.
: Display the air conditioning control
screen
: Display the option control screen
Adjust the left side seat tempera-
ture setting
Adjust the fan speed setting
Select the air flow mode
: Air flows to the upper body
: Air flows to the upper body and feet
: Air flows to the feet
: Air flows to the feet and the wind-
shield defogger operates
Adjust the right side seat tempera-
ture setting
Function on/off indicators
When the function is on, the indicator illu-
minates on the control screen.
Sub function menu
When the sub function button on the
WARNING
■To prevent the windshield from fog-
ging up
Do not use the windshield defogger
switch during cool air operation in
extremely humid weather. The difference
between the temperature of the outside
air and that of the windshield can cause
the outer surface of the windshield to fog
up, blocking your vision.
■When the outside rear view mirror
defoggers are operating
Do not touch the outside rear view mir-
ror surfaces, as they can become very
hot and burn you.
NOTICE
■To prevent 12-vol t battery discharge
Do not leave the air conditioning system
on longer than ne cessary when the
hybrid system is off.
■When repairing/replacing parts of
the air conditioning system
Have repair/replace ment performed by
your Lexus dealer.
When a part of the air conditioning sys-
tem, such as the ev aporator, is to be
replaced, it must be replaced with a new
one.
Air conditioning control screen
A
B
C
D
E
F
G

3115-3. Using the air conditioning system and defogger
5
Interior features
than that operated is maintained.
■Using automatic mode
Fan speed is adjusted automatically accord-
ing to the temperature setting and the
ambient conditions.
Therefore, the fan may stop for a while until
warm or cool air is ready to flow immedi-
ately after “Rear AUTO” is selected or
“AUTO” is touched.
Cool air may blow ar ound the upper body
even when the heater is on due to sunlight.
The temperature setting of the rear
seats can be adjusted using the follow-
ing methods:
 When the “3-ZONE” indicator is
off: Adjust the driv er’s seat tempera-
ture.
Adjust the temperature setting of each
rear seat using the Center Display or rear
air conditioning system control panel.
 Adjust the temperature setting of
rear seats using the Center Display
(rear air conditioning control
screen) or rear air conditioning sys-
tem control panel.
■Location of air outlets
The air outlets and air volume changes
according to the selected air flow
mode.
■Adjusting the position of and open-
ing and closing the air outlets
Adjusting the position of and opening
and closing the air outlets
1 Direct air flow to the left or right, up
or down
2 Turn the knob fully to the back of
the vehicle to close the vent
Adjusting the temperature set-
ting of the rear seats
Air outlets
NOTICE
■To prevent 12-volt battery discharge
Do not leave the air conditioning system
on longer than necessary when the
hybrid system is off.

3125-3. Using the air conditioning system and defogger
*:If equipped
Turns the heated steering wheel on/off
The indicator light comes on when the
heated steering wheel is operating.
■Operation condition
The power switch is in ON mode.
■Timer function
The heated steering wheel will automati-
cally turn off after about 30 minutes.
■Front seats
Vehicles without seat ventilators
Each time the switch is pressed, the
operation condition changes as fol-
lows.
Hi (3 segments lit) Mid (2 segments
lit)  Lo (1 segment lit) Off
The level indicator (amber) lights up
during operation.
Heated steering wheel*/seat
heaters
*/seat ventilators*
 Heated steering wheel
Warms up the grip of the steering
wheel
 Seat heaters
Warm up the seat upholstery
 Seat ventilators
Maintain good ventilation using a fan
built into the seat
WARNING
■To prevent minor burn injuries
Care should be taken if anyone in the fol-
lowing categories comes in contact with
the steering wheel or seats when the
heater is on:
●Babies, small children, the elderly, the
sick and the phys ically challenged
●Persons with sensitive skin
●Persons who are fatigued
●Persons who have taken alcohol or
drugs that induce sleep (sleeping
drugs, cold remedies, etc.)
NOTICE
■To prevent damage to the seat heat-
ers
Do not put heavy objects that have an
uneven surface on the seat and do not
stick sharp objects (needles, nails, etc.)
into the seat.
■To prevent 12-vol t battery discharge
Do not use the functions when the hybrid
system is off.
Heated steering wheel
Seat heaters
A