2021 LEXUS RX450h audio

4257-2. Steps to take in an emergency
7
When trouble arises
■Brake hold operated indicator
■Master warning light
■Warning buzzer
In some cases, the bu zzer may not be heard
due to being in a noisy location or audio
sound.
■Front passenger detection sensor, seat
belt reminder and warning buzzer
●If luggage is placed on the front passen-
ger seat, the front passenger detection
sensor may cause th e warning light to
flash and the warning buzzer to sound
even if a passenger is not sitting in the
seat.
●If a cushion is placed on the seat, the sen-
sor may not detect a passenger, and the
warning light may not operate properly.
■SRS warning light
This warning light system monitors the air-
bag sensor assembly, fr ont impact sensors,
side impact sensors (front door), side
impact sensors (rear), driver’s seat position
sensor, driver’s seat be lt buckle switch, front
passenger occupant cl assification system
(ECU and sensors), “AIR BAG ON” indica-
tor light, “AIR BAG OFF” indicator light,
front passenger’s seat belt buckle switch,
driver’s seat belt pretensioner, front passen-
ger’s seat belt pretensioner and force lim-
iter, airbags, interconnecting wiring and
power sources. ( P.30)
■If the malfunction indicator lamp comes
on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fuel tank immediately.
●Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after several driving
trips.
If the light does not go off even after several
trips, contact your Lexus dealer as soon as
possible.
■Electric power steering system warning
light (warning buzzer)
When the 12-volt battery charge becomes
insufficient or the voltage temporarily
drops, the electric power steering system
warning light may come on and the warning
buzzer may sound.
■When the tire pressure warning light
comes on
Inspect the tires to check if a tire is punc-
tured.
If a tire is punctured:  P.432
If none of the tires are punctured:
Turn the power switch off then turn it to ON
mode. Check if the tire pressure warning
light comes on or blinks.
If the tire pressure warning light blinks for
1 minute then stays on
There may be a malfunction in the tire
pressure warning system. Have the vehicle
inspected by your Lexus dealer immedi-
ately.
Warning lightDetails/Actions
(flashes)
Indicates a malfunction in the brake hold system
 Have the vehicle inspected by your Lexus dealer immediately.
Warning lightDetails/Actions
A buzzer sounds and the warning light comes on and flashes to indicate
that the master warning system has detected a malfunction.
P.428

4297-2. Steps to take in an emergency
7
When trouble arises
The master warning light and warning buzzers operate as follows depending on
the content of the message. If a message indicates the need for inspection by a
dealer, have the vehicle inspected by your Lexus dealer immediately.
 In some situations, the master warning light and warning buzzer may not oper-
ate as specified. In this case, follow the instructions displayed in the warning
message.
 If a warning light comes on or flashes at the same time that a warning message is
displayed, take corrective actio n according to the warning light. ( P.418)
*: A buzzer sounds the first time a message is shown on the multi-information display.
■Warning messages
The warning messages explained below
may differ from the actual messages
according to operation conditions and vehi-
cle specifications.
■Warning buzzer
In some cases, the bu zzer may not be heard
due to being in a noisy location or audio
sound.
■If “Shift to P Before Exiting Vehicle” is
displayed
Message is displayed when the driver’s
door is opened with out turning the power
switch off with the shift lever in any position other than P.
Shift the shift lever to P.
■If “Hybrid System Overheated Output
power reduced” is displayed
This message may be displayed when driv-
ing under severe operat ing conditions. (For
example, when driving up a long steep hill.)
Handling method:  P.454
■If “Traction Battery Needs to be Pro-
tected Refrain From the Use of N Posi-
tion” is displayed
This message may be displayed when the
shift lever is in N.
As the hybrid battery (traction battery) can-
Messages and warnings
Warning buzzer*Warning
Comes onSounds
Indicates an important situat ion, such as when a sys-
tem related to driving is ma lfunctioning or that dan-
ger may result if the co rrection procedure is not
performed
FlashesSoundsIndicates a situation, such as when damage to the
vehicle or danger may result
Comes onDoes not sound
Indicates a condition, such as malfunction of electri-
cal components, their cond ition, or indicates the
need for maintenance
FlashesDoes not sound
Indicates a situation, such as when an operation has
been performed incorrectly, or indicates how to
perform an operation correctly

4517-2. Steps to take in an emergency
7
When trouble arises
connect a negative cable clamp to on the second vehicle and connect the
clamp at the other end of the negative cable to .
Exclusive jump starting terminal (your vehicle)
Positive (+) battery terminal (second vehicle)
Negative (-) battery terminal (second vehicle)
Solid, stationary, unpainted metallic point away from the exclusive jump starting
terminal and any mo ving parts as shown in the illustration
6 Start the engine of the second vehi-
cle. Increase the engine speed
slightly and maintain at that level for
approximately 5 minutes to
recharge the 12-volt battery of your
vehicle.
7 Open and close any of the doors of
your vehicle with the power switch
off.
8 Maintain the engine speed of the
second vehicle and start the hybrid
system of your vehicle by turning
the power switch to ON mode.
9 Make sure the “READY” indicator
comes on. If the indicator light does
not come on, contact your Lexus
dealer. 10
Once the hybrid system has
started, remove the jumper cables
in the exact reverse order from
which they were connected.
11 Close the exclusive jump starting
terminal cover, and reinstall the fuse
box cover to its original position.
Once the hybrid system starts, have
the vehicle inspected at your Lexus
dealer as soon as possible.
■Starting the hybrid system when the
12-volt battery is discharged
The hybrid system cannot be started by
push-starting.
■To prevent 12-volt battery discharge
●Turn off the headlights and the audio sys-
tem while the hybrid system is off.
●Turn off any unnecessary electrical com-
C
D
A
B
C
D

4828-2. Customization
*1: For details about each function: P.92
*2: The default setting varies according to country.
*3:Except F SPORT models
*4:F SPORT models
■Head-up Display*( P.95)
*:If equipped
■Door lock ( P.109, 447)
EV indicatorOnOff—O—
Suggestion functionOnOff——O
FunctionDefault settingCustomized setting
Gauge informationNo content
Tachometer
—O—Hybrid System Indi-
cator
Route guidance to destina-
tion/street nameOnOff—O—
Driving support system displayOnOff—O—
CompassOnOff—O—
Audio system operation statusOnOff—O—
FunctionDefault settingCustomized setting
Unlocking using a mechanical
key
Driver’s door
unlocked in one step, all doors
unlocked in two step
All doors unlocked in one step——O
Automatic door locking func-
tionShift position linked
door locking opera- tionOff
O—OSpeed linked door locking operation
Automatic door unlocking
functionShift position linked door unlocking operationOff
O—ODriver’s door linked door unlocking operation
Function*1Default settingCustomized settingABC
ABC
ABC

513Alphabetical Index
Alphabetical Index
A
A/CAir conditioning filter ...............................390
Front automatic air conditioning system.........................................................................304
Front seat concentr ated airflow mode
(S-FLOW)................................................... 312
Micro dust and pollen filter...................... 311
Rear automatic air conditioning system ...........................................................................315
ABS (Anti-lock Brake System).............. 283 Warning light ............................................... 420
ACA (Active Cornering Assist) ........... 284
Active Cornering Assist (ACA) ........... 284
Adaptive Front-lighting System (AFS)202
Adaptive Variable Suspension System284
AFS (Adaptive Front-lighting System)202
AHB (Automatic High Beam) ............... 203
Air conditioning filter ................................. 390
Air conditioning system Air conditioning filter ...............................390
Front automatic air conditioning system.........................................................................304
Front seat concentr ated airflow mode
(S-FLOW)................................................... 312
Micro dust and pollen filter...................... 311
Rear automatic air conditioning system ...........................................................................315
Airbags Airbag operating conditions................... 33
Airbag precautions for your child ........ 36
Correct driving posture ............................ 25
Curtain shield airbag operating condi- tions .................................................................. 33
Curtain shield airbag precautions ....... 36
Front passenger occupant classification system ............................................................. 39
General airbag precautions ................... 36
Locations of airbags.................................... 30
Modification and disposal of airbags . 38
Side airbag operating conditions ......... 33 Side airbag precautions ............................ 36
Side and curtain shie
ld airbags operating
conditions ...................................................... 33
Side and curtain shield airbags precau- tions .................................................................. 36
SRS airbags......................................................30
SRS warning light.......................................420
Alarm ................................................................... 75 Warning buzzer .......................................... 418
Anchor brackets ..................................... 46, 57
Antennas (smart acc ess system with
push-button start).......................................125
Anti-lock Brake System (ABS).............. 283 Warning light ...............................................420
Approach warning...................................... 244
Armrest............................................................ 342
Assist grips ..................................................... 342
Audio system-linked display ...................... 92
Automatic headlight leveling system ....201
Automatic High Beam .............................. 203
Automatic light control system..............200
Auxiliary boxes ................................... 329, 331
Average fuel economy................................. 90
Average vehicle speed ................................ 90
AWD Control.................................................... 91
B
Back door .......................................................... 113
Back-up light Wattage ......................................................... 468
Back-up lights Replacing light bulbs ...................400, 406
Battery (12-volt battery) Battery checking ........................................ 376
If the 12-volt battery is discharged ....449
Preparing and checking before winter............................................................................291
Warning light ................................................ 419
Battery (traction batter y) ............................ 69
Blind Spot Monitor (BSM)........................247
Bottle holders ................................................ 328

519Alphabetical Index
LeverAuxiliary catch lever .................................369
Hood lock release lever.........................369
Shift lever........................................................... 191
Turn signal lever ...........................................194
Wiper lever...................................................206
Lexus climate concierge .......................... 303
Lexus Enform Safety Connect.................. 60
Lexus Safety System + 2.0 AHB (Automatic High Beam)............ 203
Dynamic radar cruise control with full-speed range ...................................... 238
LTA (Lane Tracing Assist).....................227
PCS (Pre-Collision System)................ 220
RSA (Road Sign Assist) ......................... 236
License plate lights Light switch ...................................................200
Replacing light bulbs............................... 400
Light bulbs Replacing .......................................................399
Lights Automatic High Beam system............ 203
Fog light switch ...........................................206
Front interior lights ...................................... 321
Front personal lights................................. 322
Headlight switch ........................................200
Interior lights................................................... 321
Interior lights list............................................ 321
Rear interior lights ....................................... 321
Rear personal lights.................................. 322
Replacing light bulbs............................... 400
Turn signal lever ...........................................194
Vanity lights .................................................. 345
Wattage..........................................................468
Lock steering column ................................. 185
LTA (Lane Tracing Assist) Operation.......................................................227
Warning messages .................................. 235
Luggage cover ............................................. 330M
Maintenance Do-it-yourself maintenance ................. 367
General maintenance .............................363
Maintenance data ..................................... 460
Maintenance requirements ..................362
Malfunction indicator lamp .......................419
Master warning light .................................. 425
Menu icons........................................................ 89
Meter Clock...................................................................83
Hybrid System Indicator ...........................85
Indicators.......................................................... 80
Instrument panel light control................. 87
Meter control switches ..............................89
Meters.................................................................83
Multi-information display ......................... 88
Settings............................................................... 92
Units.......................................................................91
Warning lights .............................................. 418
Warning message .....................................428
Micro dust and pollen filter ........................ 311
Mirrors Inside rear view mirror ............................. 149
Outside rear view mirror defoggers306
Outside rear view mirrors...................... 150
Vanity mirrors ..............................................345
Moon roof Door lock linked moon roof operation........................................................................... 156
Door lock linked panoramic moon roof operation ..................................................... 159
Jam protection function ........................... 156
Operation ....................................................... 155
Multi-information display ............................ 88 Audio system-linked display ................... 92
AWD Control ..................................................91
Drive information ..........................................90
Driving assist system information ......... 92
Driving information display ......................90

525Alphabetical Index
Intuitive parking assist.................. 260, 423
Low engine oil pressure...........................419
LTA (Lane Tracing Assist)227, 230, 422
Open door........................................................112
Open window ...............................................154
PKSA (Parking Support Alert) ........... 253
PKSB (Parking Support Brake) ......... 423
Pre-collision braking.................................. 221
RCTA (Rear Cross Traffic Alert) ...... 423
Seat belt ................................................ 421, 422
Warning label .................................................. 69
Warning lights................................................ 418 ABS .................................................................. 420
Brake hold operated indicator ........... 425
Brake Override System ......................... 420
Brake system ................................................ 418
Charging system .........................................419
Drive-Start Control .................................. 420
Electric power steering ............................ 421
High coolant temperature ..................... 418
Hybrid system overheat warning light...........................................................................419
Intuitive parking assist OFF indicator423
Low engine oil pressure...........................419
Low fuel level ................................................. 421
LTA indicator ............................................... 422
Malfunction indicator lamp.....................419
Master warning light ................................ 425
Parking brake indicator .......................... 424
PKSB OFF indicator ................................ 423
Pre-collision system ................................. 424
RCTA OFF indicator............................... 423
Seat belt reminder light ................ 421, 422
Slip indicator ................................................ 424
SRS.................................................................... 420
Tire pressure ................................................ 422
Warning messages ..................................... 428
Washer Adding ............................................................ 375
Preparing and checking before winter........................................................................... 291
Switch ..............................................................206 Washing and waxing.................................. 356
Weight
Cargo capacity .................................. 169, 172
Load limits ....................................................... 172
Weight............................................................ 460
Wheels ............................................................. 389 Size ....................................................................466
Window lock switch .................................... 155
Windows Power windows ........................................... 153
Rear window defogger.......................... 306
Washer .......................................................... 206
Windshield wiper de-icer ........................... 311
Windshield wiper inserts .......................... 392
Windshield wipers Position........................................................... 208
Rain-sensing windshield wipers ........ 206
Replacing a windshield wiper insert.392
Winter driving tips.........................................291
Wireless charger ......................................... 335
Wireless remote control Battery-Saving Function...........................126
Locking/Unlocking ................................... 107
Replacing the battery ...............................393
For information regarding the equipment listed below, refer to
the “NAVIGATION AND MULTI-
MEDIA SYSTEM OWNER’S
MANUAL”.
· Navigation system
· Audio/visual system
· Panoramic view monitor
· Lexus parking assist monitor