reset LEXUS RX450h 2022 User Guide

1844-2. Driving procedures
1Stop the vehicle completely.
2 Set the parking brake ( P.193),
and shift the shift lever to P.
3 Press the power switch.
4 Release the brake pedal and check
that the display on the meters is off.
■Automatic hybrid system shut off fea-
ture
●The vehicle is equipped with a feature
that automatically shuts off the hybrid sys-
tem when the shift lever is in P with the
hybrid system operating for an extended
period.
●The hybrid system will automatically shut
off after approximately 1 hour if it has
been left running while the shift lever is in
P.
●The timer for the automatic hybrid system
shut off feature will reset if the brake
pedal is depressed or if the shift lever is in
a position other than P.
●After the vehicle is parked, if the door is
locked with the door lock switch ( P.111)
from the inside or the mechanical key
from the outside, the automatic hybrid
system shut off feature will be disabled.
The timer for the automatic hybrid system
shut off feature will be re-enabled if the
driver’s door is opened.
■Locking the door from outside with the
hybrid system operating
1 With the driver’s d oor open, pull the
driver’s door handle and insert the
mechanical key.
2 Turn the mechanical key
counterclockwise.
3 Pull out the mechanical key and close
the door.
WARNING
■Caution while driving
If hybrid system failure occurs while the
vehicle is moving, do not lock or open the
doors until the vehicle reaches a safe and
complete stop. Activati on of the steering
lock in this circumstance may lead to an
accident, resulting in death or serious
injury.
NOTICE
■When starting the hybrid system
If the hybrid system becomes difficult to
start, have your vehicle checked by your
Lexus dealer immediately.
■Symptoms indicating a malfunction
with the power switch
If the power switch seems to be operat-
ing somewhat differently than usual, such
as the switch sticking slightly, there may
be a malfunction. Contact your Lexus
dealer immediately.
Stopping the hybrid system

3566-2. Maintenance
6-2.Maintenance
■Repair and replacement
It is recommended that genuine Lexus parts
be used for repairs to ensure performance
of each system. If non-Lexus parts are used
in replacement or if a repair shop other than
a Lexus dealer performs repairs, confirm
the warranty coverage.
■Allow inspection and repairs to be per-
formed by a Lexus dealer
●Lexus technicians are well-trained spe-
cialists and are kept up to date with the
latest service information. They are well
informed about the operation of all sys-
tems on your vehicle.
●Keep a copy of the repair order. It proves
that the maintenance that has been per-
formed is under warra nty coverage. If any
problem should arise while your vehicle is
under warranty, your Lexus dealer will
promptly take care of it.
General maintenance should be per-
formed on a daily basis. This can be
done by yourself or by a Lexus dealer.
Scheduled maintenance should be
performed at specified intervals
according to the maintenance sched-
ule.
For details about ma intenance items and
schedules, refer to the “Warranty and Ser-
vice Guide”, “Owner’s Manual Supple-
ment” or “Scheduled Maintenance”.
■Resetting the message indicating main-
tenance is required (U.S.A. only)
After the required maintenance is pre-
formed according to the maintenance
schedule, please reset the message.
To reset the message, follow the procedures
described below:
1 Press or of the meter control
switch to select .
2 Press or of the meter control
switch, select the “Scheduled Mainte-
nance” screen and then press and hold
the .
Maintenance requirements
To ensure safe and economical driv-
ing, day-to-day care and regular
maintenance are essential. It is the
owner’s responsibility to perform
regular checks. Lexus recommends
the following maintenance:
WARNING
■If your vehicle is not properly main-
tained
Improper maintenance could result in
serious damage to the vehicle and possi-
ble death or serious injury.
■Handling of the 12-volt battery
●Engine exhaust, some of its constitu-
ents, and a wide variety of automobile
components contain or emit chemicals
known to the State of California to
cause cancer and birth defects and
other reproductive harm. Work in a
well ventilated area.
●Oils, fuels and fluids contained in vehi-
cles as well as waste produced by
component wear contain or emit
chemicals known to the State of Cali-
fornia to cause cancer and birth
defects or other re productive harm.
Avoid exposure and wash any affected
area immediately.
●12-volt battery post s, terminals and
related accessories contain lead and
lead compounds which are known to
cause brain damage. Wash your hands
after handling. ( P.370)
General maintenance
Scheduled maintenance

3576-2. Maintenance
6
Maintenance and care
3Select the “Yes” and press .
4 A message will be displayed on the
multi-information display when the
reset procedure has been completed.
You can perform some maintenance
procedures by yourself.
Please be aware that do-it-yourself
maintenance may affect warranty cov-
erage.
The use of Lexus repair manuals is recom-
mended.
For details about warra nty coverage, refer
to the separate “Owner’s Guide”, “War-
ranty and Service Guide”, “Owner’s Man-
ual Supplement” or “Warranty Booklet”.
Do-it-yourself maintenance
General maintenance
Listed below are the general main-
tenance items that should be per-
formed at the intervals specified in
the “Warranty and Service Guide”
or “Owner’s Manual Supplement”.
It is recommended that any prob-
lem you notice should be brought to
the attention of your Lexus dealer
or qualified service shop for advice.
WARNING
■If the hybrid system is operating
Turn the hybrid system off and ensure
that there is adequate ventilation before
performing maintenance checks.
Engine compartment
ItemsCheck points
Brake fluid
Is the brake fluid at the
correct level?
(  P.369)
Engine/power
control unit cool-
antIs the engine/power
control unit coolant at
the correct level?
( P.367)
Engine oil
Is the engine oil at the
correct level?
( P.365)
Exhaust system
There should not be
any fumes or strange
sounds.

3676-3. Do-it-yourself maintenance
6
Maintenance and care
●When the engine is new, for example
directly after purchasing the vehicle or
after replacing the engine
●If low quality oil or oil of an inappropriate
viscosity is used
●When driving at high engine speeds or
with a heavy load, wh en towing, or when
driving while accelera ting or decelerat-
ing frequently
●When leaving the engine idling for a long
time, or when driving frequently through
heavy traffic
■After changing the engine oil
The engine oil maintena nce data should be
reset. Perform the following procedures:
1 Press or of the meter control
switch to select on the multi-infor-
mation display.
2 Press or of the meter control
switch, select the “Vehicle Settings”
then “Oil Maintenance”. (To confirm
setting, press .)
3 Select the “Yes” and press .
4 A message is displayed on the
multi-information display.
■Engine coolant reservoir
The coolant level is satisfactory if it is
between the “FULL” and “LOW” lines
on the reservoir when the hybrid sys-
tem is cold.
Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the “LOW” line,
add coolant up to the “FULL” line.
(P.446)
WARNING
■Used engine oil
●Used engine oil contains potentially
harmful contaminants which may
cause skin disorders such as inflamma-
tion and skin cancer, so care should be
taken to avoid prolonged and
repeated contact. To remove used
engine oil from your skin, wash thor-
oughly with soap and water.
●Dispose of used oil and filters only in a
safe and acceptable manner. Do not
dispose of used oil and filters in house-
hold trash, in sewers or onto the
ground.
Call your Lexus dealer, service station
or auto parts store for information
concerning recycling or disposal.
●Do not leave used engine oil within the
reach of children.
NOTICE
■To prevent serious engine damage
Check the oil level on a regular basis.
■When replacing the engine oil
●Be careful not to spill engine oil on the
vehicle components.
●Avoid overfilling, or the engine could
be damaged.
●Check the oil level on the dipstick
every time you re fill the vehicle.
●Be sure the engine o il filler cap is prop-
erly tightened.
Checking the coolant
A
B
C

3796-3. Do-it-yourself maintenance
6
Maintenance and care
When position of each tire is determined,
the inflation pressure of each tire will be
displayed on the multi-information display.
If tire inflation pressure becomes low
before the inflation pr essure is displayed,
the tire pressure warning light will come
on.
Depending on the vehicle and driving con-
ditions, initialization may take up to
approximately 1 hour to complete.
■Initializing the tire pressure warning sys-
tem
Initialize the system with the tire inflation
pressure adjusted to the specified level.
■If you press the tire pressure warning
reset switch accidentally
If initialization is perf ormed, adjust the tire
inflation pressure to the specified level and
initialize the tire pressure warning system
again.
■Initialization procedure
●Make sure to carry out initialization after
adjusting the tire inflation pressure.
Also, make sure the tires are cold before
carrying out initializat ion or tire inflation
pressure adjustment.
●If you have accidentally turned the power
switch off during initialization, it is not
necessary to press the reset switch again
as initialization will restart automatically
when the power switch has been turned
to ON mode for the next time.
●If you accidentally press the reset switch
when initialization is not necessary, adjust
the tire inflation pres sure to the specified
level when the tires are cold, and conduct
initialization again.
●While the position of each tire is being
determined and the inflation pressures
are not being displayed on the
multi-information display, if the inflation
pressure of a tire drops, the tire pressure
warning light will come on.
■When initialization of the tire pressure
warning system has failed
Initialization may take lo nger to complete if
the vehicle is driven on an unpaved road. When performing initialization, drive on a
paved road if possible. Depending on the
driving environment and condition of the
tires, initialization
will be completed in
approximately 10 to 30 minutes. If initializa-
tion is not complete after driving approxi-
mately 10 to 30 minutes, continue driving
for a while.
If the inflation pressure of each tire is not
displayed after driving for approximately 1
hour, perform the following procedure.
●Park the vehicle in a safe place for
approximately 20 minutes. Then drive
straight (with occasional left and right
turns) at approximately 25 mph (40
km/h) or more for approximately 10 to
30 minutes.
However, in the following situations, the tire
inflation pressure will not be recorded and
the system will not operate properly. Per-
form initialization again.
●When operating the tire pressure warn-
ing reset switch, the tire pressure warning
light does not blink 3 times.
●After performing initialization, the tire
pressure warning light blinks for 1 minute
then stays on while driving.
If the inflation pressure of each tire is still not
displayed, have the vehicle inspected by
your Lexus dealer.
The tire pressure warning valve and
transmitter is equipped with a unique
ID code. When replacing a tire pres-
sure warning valve and transmitter, it is
WARNING
■When initializing the tire pressure
warning system
Do not initializing tire inflation pressure
without first adjusting the tire inflation
pressure to the spec ified level. Other-
wise, the tire pressu re warning light may
not come on even if the tire inflation pres-
sure is low, or it may come on when the
tire inflation pressure is actually normal.
Registering ID codes

4227-2. Steps to take in an emergency
not be charged when the shift lever is in N,
shift the shift lever to P when the vehicle is
stopped.
■If “Traction Battery Needs to be Pro-
tected. Shift into P to Restart.” is dis-
played
This message is displayed when the hybrid
battery (traction battery) charge has
become extremely low because the shift
lever has been left in N for a certain amount
of time.
When operating the vehicle, shift to P and
restart the hybrid system.
■If “Shift Is in N Release Accelerator
Before Shifting ” is displayed
Message is displayed when the accelerator
pedal has been depressed and the shift
lever is in N.
Release the accelerator pedal and shift the
shift lever to D or R.
■If “Depress Brake when Vehicle Is
Stopped Hybrid Syst em May Overheat”
is displayed
Message is displayed when the accelerator
pedal is depressed to maintain the vehicle
position when stopped on a upward slope,
etc.
If this continues, th e hybrid system may
overheat.
Release the accelerator pedal and depress
the brake pedal.
■If “Power Turned Off to Save Battery” is
displayed
This message is disp layed when the power
was cut off due to the automatic power off
function. The next time the hybrid system is
started, increase the engine speed slightly
and maintain it at th at speed for approxi-
mately 5 minutes to recharge the 12-volt
battery.
■If “Headlight System Malfunction Visit
Your Dealer” is displayed
The following systems may be malfunction-
ing. Have the vehicle inspected by your
Lexus dealer immediately.
●The LED headlight system
●AFS (Adaptive Front-li ghting System) (if equipped)
●The automatic headlight leveling system
●Automatic High Beam
■If “Radar Cruise Control Unavailable
See Owner's Manual” is displayed
The dynamic radar cruise control with
full-speed range syst em is suspended tem-
porarily or until the problem shown in the
message is re solved. (causes and coping
methods: P.216)
■If “Radar Cruise Control Unavailable” is
displayed
The dynamic radar cruise control with
full-speed range system cannot be used
temporarily. Use the system when it
becomes available again.
■If a message that indicates the malfunc-
tion of front camera is displayed
The following systems may be suspended
until the problem show n in the message is
resolved. ( P.216, 416)
●PCS (Pre-Collision system)
●LTA (Lane Tracing Assist)
●Automatic High Beam
●RSA (Road Sign Assi st) (if equipped)
●Dynamic radar cruise control with
full-speed range
■If a message that indicates the malfunc-
tion of radar sensor is displayed
The following systems may be suspended
until the problem show n in the message is
resolved. ( P.216, 410)
●PCS (Pre-Collision system)
●LTA (Lane Tracing Assist)
●Dynamic radar cruise control with
full-speed range
■If “Maintenance Required Soon” is dis-
played (U.S.A. only)
Indicates that all maintenance according to
the driven distance on the maintenance
schedule
* should be performed soon.
Comes on approximately 4500 miles
(7200 km) after the message has been
reset. If necessary, perform maintenance.
Please reset the message after the mainte-

4237-2. Steps to take in an emergency
7
When trouble arises
nance is performed. (P.356)
*: Refer to the separate “Scheduled Main-
tenance” or “Owner’s Manual Supple-
ment” for the maintenance interval
applicable to your vehicle.
■If “Maintenance Required Visit Your
Dealer” is displayed (U.S.A. only)
Indicates that all maintenance is required to
correspond to the driven distance on the
maintenance schedule
*.
Comes on approximately 5000 miles
(8000 km) after the message has been
reset. (The indicator will not work properly
unless the message ha s been reset.) Per-
form the necessary maintenance. Please
reset the message after the maintenance is
performed. ( P.356)
*: Refer to the separate “Scheduled Main-
tenance” or “Owner’s Manual Supple-
ment” for the maintenance interval
applicable to your vehicle.
■If “Oil Maintenance Required Soon” is
displayed
Indicates that the en gine oil should be
scheduled to be changed.
Check the engine oil and change it if neces-
sary. After changing the engine oil, make
sure to reset the message. ( P.367)
■If “Oil Maintenance Required” is dis-
played
Indicates that the en gine oil should be
changed.
Check and change the engine oil, and oil fil-
ter by your Lexus deal er. After changing the
engine oil, make sure to reset the message.
(  P.367)
■If a message that in dicates the need for
visiting your Lexus dealer is displayed
The system or part shown on the
multi-information display is malfunctioning.
Have the vehicle inspected by your Lexus
dealer immediately.
■If a message that in dicates the need for
referring to Owner’s Manual is dis-
played
●“Engine Coolant Temp High” is shown on the multi-information display, follow the
instructions. (
P.446)
●If any of the following messages are
shown on the multi-info rmation display, it
may indicate a malf unction. Have the
vehicle inspected by your Lexus dealer
immediately.
• “Access System with Elec. Key Malfunc-
tion”
• “Hybrid System Malfunction”
•“Check Engine”
• “Hybrid Battery System Malfunction”
• “Accelerator System Malfunction”
●If any of the following messages are
shown on the multi-info rmation display, it
may indicate a malfun ction. Immediately
stop the vehicle and contact your Lexus
dealer.
• “Braking Power Low”
• “Charging Syst em Malfunction”
• “Oil Pressure Low”
NOTICE
■If “High Power Consumption Partial
Limit On AC/Heater Operation” is
displayed frequently
There is a possible malfunction relating
to the charging system or the 12-volt bat-
tery may be deteriorating. Have the vehi-
cle inspected by your Lexus dealer.

4738-2. Customization
8
Vehicle specifications
■Gauges, meters and multi-information display (P.78, 83, 88)
Function*1Default settingCustomized setting
LanguageEnglishFrenchOO—Spanish
Units*2miles (MPG)
km (km/L)
OO—km (L/100km)
miles (MPG Impe-
rial)
Drive information 1
Current fuel con-sumption
Customizable items: P.90—O—
Average fuel econ-omy (after reset)
Drive information 2
Distance (driving range)
Average vehicle
speed (after reset)
Drive information 3
Average fuel econ- omy (after refuel)
Elapsed time (after start)
Clock12-hour display24-hour display—O—
Pop-up displayOnOff—O—
Accent color*3Color 1Color 2OO—
Needle*4Color 1Color 2—O—Color 3
Tachometer settingChange according to driving modeAlways tachometer
—O—Always Hybrid Sys- tem Indicator
Rev indicator*44000 r/min.
2000 - 6000 r/min.
—O—
Off
Rev peak*4OnOff—O—
ABC

513Alphabetical Index
Checking ....................................................... 367
Preparing and checking before winter.........................................................................286
Power easy access system ....................... 140
Power outlets ................................................ 338
Power steering (Elect ric power steering
system).......................................................... 279 Warning light .................................................413
Power switch ...................................................182 Auto power off function .......................... 185
Changing the power switch modes . 185
Power switch (engine switch) If your vehicle has to be stopped in an
emergency ................................................ 402
Power windows Door lock linked window operation..152
Jam protection function............................. 151
Operation......................................................... 151
Window lock switch ..................................153
Pre-Collision System (PCS) Function ............................................................218
PCS OFF switch ........................................ 220
Warning light .................................................416
R
Radar cruise control (dynamic radar cruise control with full-speed range)............. 236
Radiator ........................................................... 368
RCTA Function .......................................................... 259
Warning message.....................................260
RCTA (Rear Cross Traffic Alert) ......... 250
RCTA function ............................................. 260
Rear automatic air conditioning system .......................................................................... 309
Rear Cross Traffic Alert (RCTA) ......... 259
Rear door sunshades ................................. 340
Rear fog lights Switch .............................................................. 204
Rear seats ........................................................ 130 Adjustment....................................................... 131
Folding down the rear seatbacks......... 131 Head restraints..............................................143
Seat heaters ....................................................312
Rear side marker lights Light switch .................................................... 198
Replacing light bulbs................................393
Rear turn signal lights Replacing light bulbs....................393, 397
Turn signal lever ...........................................192
Wattage ......................................................... 460
Rear view mirror Inside rear view mirror ..............................147
Outside rear view mirrors...................... 148
Rear window defogger .............................300
Rear window wiper.....................................208
Refueling Capacity .........................................................454
Fuel types .......................................................454
If the fuel filler do or cannot be opened
......................................................................... 438
Opening the fuel tank cap ................... 209
Regenerative braking ....................................67
Remote Touch .............................................. 292
Replacing Electronic key battery ............................. 386
Fuses................................................................ 388
Light bulbs ..................................................... 392
Tires .................................................................. 424
Resetting the message indicating mainte- nance is required ...................................... 356
Rev indicator .................................................... 85
Rev peak............................................................. 85
Road Sign Assist .............. ............................ 234
RSA (Road Sign Assist) ............................ 234
S
Seat belt reminder light.....................413, 414
Seat belts............................................................ 26 Automatic Locking Retractor................. 28
Child restraint system installation ......... 46
Cleaning and maintaining the seat belt..........................................................................353
Emergency Locking Retractor .............. 28

515Alphabetical Index
Stop lightsReplacing light bulbs................................ 393
Storage features ........................................... 318
Stuck If the vehicle becomes stuck................ 449
Suggestion function....................................... 93
Sun visors ........................................................ 339
Sunshade Panoramic moon roof.............................. 156
Roof ....................................................................154
Switches Automatic High Beam switch ...............201
Brake Hold switch ......................................196
Door lock switches ........................................ 111
Driving mode select switch .................. 276
Driving position memory switches .... 140
Dynamic radar cruise control with full-speed range switch ....................... 236
Electronic sunshade switch ................... 156
Emergency flashers switch ................... 402
EV drive mode switch ..............................187
Fog light switch ........................................... 204
Garage door opener switches ............ 341
Heated steering wheel switch............... 312
HUD (Head-up display) switch............ 96
Ignition switch................................................182
Instrument panel light control switches ............................................................................ 87
Intuitive parking assist switch............... 253
Light switches ............................................... 198
LTA (Lane Tracing As sist) switch..... 229
Meter control switches .............................. 89
Moon roof switches ...................................153
“ODO TRIP” switch .................................... 87
Outside rear view mi rror switches .... 148
Paddle shift switches .........................190, 191
Panoramic moon roof switches .......... 156
Parking brake switch .................................193
PCS OFF switch ........................................ 220
PKSB (Parking Support Brake) switch ......................................................................... 266
Power switch .................................................182 Power window switches ........................... 151
RCTA switch ............................................... 260
Rear window and outside rear view mir-
ror defoggers switch ........................... 298
Seat heater switches...................................312
Seat ventilator switches ............................312
“SOS” button...................................................60
Tilt and telescopic steering control switch ........................................................................... 146
Tire pressure warning reset switch...378
Vehicle-to-vehicle di stance switch... 236
VSC OFF switch ...................................... 280
Window lock switch.................................. 153
Windshield wiper and washer switch ..........................................................................204
Windshield wiper de-icer switch...... 303
T
Tachometer....................................................... 83 Rev indicator ...................................................85
Rev peak............................................................85
Tail lights Light switch .................................................... 198
Replacing light bulbs................................393
The Secondary Collision Brake ............ 279
Theft deterrent system Alarm................................................................... 74
Immobilizer system ...................................... 73
Tire inflation pressure Maintenance data ..................................... 458
Tire inflation pressure display function.......................................................................... 376
Warning light .................................................414
Tire information ............................................ 463 Glossary ......................................................... 467
Size ................................................................... 465
Tire identification number......................464
Uniform Tire Quality Grading ........... 465
Tire pressure display .................................. 376
Tire pressure warning system Function .......................................................... 376
Initializing........................................................378