key LEXUS RX450h 2021 Repair Manual

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

4868-2. Customization
■Steering wheel (P.148)
■Outside rear view mirrors ( P.150)
*:If equipped
■Power windows, and moon roof* or panoramic moon roof* ( P.153, 155, 158)
*:If equipped
■Moon roof* ( P.155)
*:If equipped
FunctionDefault settingCustomized setting
Auto tilt away functionOnOff——O
FunctionDefault settingCustomized setting
Automatic mirror folding and
extending operation
*
Linked to the lock-
ing/unlocking of the doorsOff
——OLinked to operation of the power switch
FunctionDefault settingCustomized setting
Mechanical key linked opera-
tionOffOn——O
Wireless remote control linked
operationOffOn (open only)——O
Wireless remote control linked
operation signal (buzzer)OnOff——O
FunctionDefault settingCustomized setting
Linked operation of compo-
nents when mechanical key is
used (open only)
Slide onlyTilt only——O
Linked operation of compo-
nents when wireless remote
control is used
Slide onlyTilt only——O
ABC
ABC
ABC
ABC

4918-2. Customization
8
Vehicle specifications
■Illumination (P.321)
*:If equipped
FunctionDefault settingCustomized setting
Time elapsed before the inte-
rior lights turn off15 seconds
Off
O—O7.5 seconds
30 seconds
Operation after the power
switch is turned offOnOff——O
Operation when the doors are
unlockedOnOff——O
Operation when you approach
the vehicle with the electronic
key on your person
OnOff——O
Footwell lights and front center
console lightOnOff——O
Instrument panel ornament
light
* and door trim ornament
lights
*
OnOff——O
Time elapsed before the outer
foot lights turn off15 seconds
Off
O—O7.5 seconds
30 seconds
Operation of the outer foot
lights when you approach the
vehicle with the electronic key
on your person
OnOff——O
Operation of the outer foot
lights when the doors are
unlocked with the power door
lock switch
OnOff——O
Operation of the outer foot
lights when a door is openedOnOff——O
Fading out of the outer foot
lights when they turn offLongShort——O
ABC

510What to do if... (Troubleshooting)
1-1.What to do if... (Troubleshooting)What to do if... (Troubleshooting)
If you lose your mechanical keys,
new genuine mechanical keys can
be made by your Lexus dealer.
( P.446)
 If you lose your electronic keys, the
risk of vehicle theft increases signifi-
cantly. Contact your Lexus dealer
immediately. ( P.446)
 Is the electronic key battery weak or
depleted? ( P.393)
 Is the power switch in ON mode?
When locking the doors, turn the power
switch off. ( P.187)
 Is the electronic key left inside the
vehicle?
When locking the doors, make sure that
you have the electronic key on your per-
son.
The function may not operate prop- erly due to the condition of the radio
wave. (
P.126)
 Is the child-protector lock set?
The rear door cannot be opened from
inside the vehicle when the lock is set.
Open the rear door from outside and then
unlock the child-protector lock. ( P.112)
 Did you press the power switch
while firmly depressing the brake
pedal? ( P.184)
 Is the shift lever in P? ( P.184)
 Is the electronic key anywhere
detectable inside the vehicle?
( P.125)
 Is the steering wheel unlocked?
( P.185)
 Is the electronic key battery weak or
depleted?
In this case, the hy brid system can be
started in a temporary way. ( P.448)
 Is the 12-volt battery discharged?
( P.449)
 Is the power switch in ON mode?
If you have a problem, check the
following before contacting your
Lexus dealer.
The doors cannot be locked,
unlocked, opened or closed
You lose your keys
The electronic key does not
operate properly
The doors cannot be locked or
unlocked
The rear door cannot be opened
If you think something is wrong
The hybrid system does not start
The shift lever cannot be shifted
from P even if you depress the
brake pedal

515Alphabetical Index
DifferentialRear differential oil ....................................465
Dimension ...................................................... 460
Dinghy towing................................................ 183
Display Center Display........................................... 300
Dynamic radar cruise control with full-speed range ...................................... 238
Energy monitor.............................................. 99
Head-up display ........................................... 95
Intuitive parking assist.............................. 255
LTA (Lane Tracing Assist).................... 232
Multi-information display ..........................88
RCTA ................................................................ 261
Warning message..................................... 428
Distance until next engine oil change .... 87
Do-it-yourself maintenance .................... 363
Door courtesy lights .....................................321 Wattage..........................................................468
Door lock Power back door.......................................... 113
Side doors ...................................................... 109
Smart access system with push-button start ..................................................................125
Wireless remote control..........................107
Door pockets ................................................ 328
Doors Automatic door lock ing and unlocking
system ..............................................................112
Door glasses ..................................................153
Door lock warning buzzer ...................... 110
Open door warning buzzer ....................112
Outside rear view mirrors ..................... 150
Rear door child-protectors ......................112
Side doors ...................................................... 109
Drive distance .................................................. 90
Driver’s seat position memory Driving position memory......................... 142
Memory recall function ............................143
Power easy access system ..................... 142
Drive-start control ........................................165 Driving
Break-in tips .................................................. 165
Correct driving posture ............................ 25
Driving mode select switch ................... 281
Hybrid vehicle driving tips ................... 289
Procedures .................................................... 164
Winter drive tips ...........................................291
Driving assist system information ............ 92
Driving information display ........................ 90
Driving position memory............................ 142 Memory recall function.............................143
Power easy access system .....................142
Driving range ................................................... 90
Dynamic radar cruise control with full-speed range ........................................ 238Warning message ..................................... 246
E
ECB (Electronically Controlled Brake Sys-
tem) ................................................................ 283
EDR (Event data recorder) ........................... 8
E-Four .............................................................. 284
Elapsed time ..................................................... 90
Electric motor (traction motor) ................ 66
Electric Power Steering (EPS) .............. 284 Warning light .................................................421
Electronic key ................................................ 106 Battery-saving function.............................126
If the electronic key does not operate properly ....................................................... 447
Replacing the battery ...............................393
Electronic sunshade Jam protection function ........................... 159
Operation ....................................................... 158
Electronically Controlled Brake System (ECB) ............................................................ 283
Emergency flashers ..................................... 410
Emergency, in case of If a warning buzzer sounds.................... 418
If a warning light turns on........................ 418
If a warning message is displayed .....428
If the 12-volt battery is discharged ....449

516Alphabetical Index
If the electronic key does not operate properly....................................................... 447
If the fuel filler door cannot be opened ......................................................................... 446
If the hybrid system will not start ........ 444
If the vehicle is trapped in rising water411
If you have a flat tire .................................. 432
If you lose your keys................................. 446
If you think something is wrong ........... 417
If your vehicle becomes stuck............. 457
If your vehicle has to be stopped in an
emergency ................................................. 410
If your vehicle needs to be towed ....... 413
If your vehicle overheats ........................ 454
Energy monitor ..................................... 99, 100
Engine ACCESSORY mode ...............................187
Compartment ............................................... 371
Engine switch................................................ 184
Hood................................................................369
How to start the hybrid system ........... 184
Identification number .................................461
If the hybrid system will not start ........ 444
If your vehicle has to be stopped in an
emergency ................................................. 410
Ignition switch (power switch) ............. 184
Overheating................................................. 454
Power switch ................................................ 184
Tachometer ..................................................... 83
Engine coolant Capacity ......................................................... 464
Checking ....................................................... 373
Preparing and checking before winter........................................................................... 291
Engine coolant temperature gauge ....... 83
Engine oil Capacity ......................................................... 463
Checking ......................................................... 371
Preparing and checking before winter........................................................................... 291
Warning light .................................................419
Engine oil maintenance data .................. 373 Engine switch (power switch) ................. 184
If your vehicle has to be stopped in an emergency .................................................. 410
EPS (Electric Power Steering) .............. 284 Warning light .................................................421
EV drive mode............................................... 189
EV indicator .......................................................67
Event data recorder (E DR) ........................... 8
F
Flat tire
Tire pressure warning system .............382
Vehicles with a spare tire....................... 432
Floor mats .......................................................... 24
Fluid Brake ............................................................... 465
Hybrid transmission................................. 465
Washer ...........................................................375
Fog lights Switch.............................................................. 206
Footwell light ...................................................321
Front automatic air conditioning system .......................................................................... 304
Front fog lights Replacing light bulbs ............................... 400
Front passenger footwell hooks ............ 345
Front passenger occupant classification system .............................................................. 39
Front seats Adjustment ....................................................... 131
Cleaning ........................................................ 359
Correct driving posture ............................ 25
Driving position memory .........................142
Head restraints............................................. 145
Memory recall function.............................143
Power easy access system .....................142
Seat heaters ................................................... 318
Seat position memory ...............................142
Seat ventilators ............................................. 318
Front side marker light Light switch .................................................. 200
Replacing light bulbs ............................... 400

518Alphabetical Index
High voltage components ....................... 69
Hybrid system precautions ..................... 69
If the hybrid system will not start ........ 444
Overheating.................................................456
Power (ignition) switch............................ 184
Regenerative braking ................................. 67
Starting the hybrid system...................... 184
Hybrid System Indicator......................85, 99
Hybrid transmission....................................... 191 M mode ............................................................193
Paddle shift switches ....................... 192, 193
Hybrid vehicle driving tips ....................... 289
I
I/M test ............................................................ 366
Identification Engine ...............................................................461
Vehicle ............................................................460
If your vehicle has to be stopped in an
emergency ................................................... 410
Ignition switch (power switch) ................ 184 Auto power off function ...........................187
Changing the power switch modes ..187
If your vehicle has to be stopped in an
emergency ................................................. 410
Immobilizer system .........................................73
Indicators ........................................................... 80
Initialization Items to initialize ......................................... 493
Maintenance .................................... 362, 373
Power windows............................................153
Tire pressure warning system ............ 385
Inside rear view mirror ................................149
Instrument panel light control ................... 87
Interior lights....................................................321 Front interior light ........................................ 321
Rear interior light ......................................... 321
Intuitive parking assist.....................253, 255 Function .......................................................... 255
Warning message..................................... 257
J
JackPositioning a floor jack ........................... 369
Vehicle-equipped jack ...........................433
Jack handle .................................................... 433
Jam protection function Electronic sunshade .................................. 159
Moon roof ...................................................... 156
Panoramic moon roof .............................. 159
Power back door.......................................... 119
Power windows ........................................... 153
Rear seats ........................................................132
K
Keyless entrySmart access system with push-button start ................................................................. 125
Wireless remote control ......................... 107
Keys Battery-saving function.............................126
Electronic key ............................................... 106
If the electronic key does not operate properly ....................................................... 447
If you lose your keys .................................446
Key number plate ....................................... 106
Keyless entry ....................................... 107, 125
Mechanical key ............................................ 106
Power switch................................................. 184
Replacing the battery ...............................393
Warning buzzer .......................................... 125
Wireless remote control ......................... 107
Knee airbags .................................................... 30
L
Lane Tracing Assist (LTA) Operation ...................................................... 227
Warning messages...................................235
Language (multi-information display) ... 92
LATCH anchors ............................................. 54

521Alphabetical Index
Power control unit coolantCapacity ......................................................... 464
Checking ....................................................... 373
Preparing and checking before winter........................................................................... 291
Power easy access system ........................ 142
Power outlets ................................................ 343
Power steering (Elect ric power steering
system).......................................................... 284 Warning light ................................................. 421
Power switch .................................................. 184 Auto power off function ...........................187
Changing the power switch modes ..187
Power switch (engine switch) If your vehicle has to be stopped in an
emergency ................................................. 410
Power windows Door lock linked window operation..154
Jam protection function............................153
Operation........................................................153
Window lock switch ................................. 155
Pre-Collision System (PCS) Function .......................................................... 220
PCS OFF switch .........................................222
Warning light ............................................... 424
R
Radar cruise control (dynamic radar cruise control with full-speed range)............. 238
Radiator ........................................................... 374
RCTA Function ............................................................ 261
Warning message..................................... 262
RCTA (Rear Cross Traffic Alert) ......... 253
RCTA function ............................................. 262
Rear automatic air conditioning system ............................................................................315
Rear Cross Traffic Alert (RCTA) ........... 261
Rear door sunshades ................................. 345
Rear fog lights Switch ..............................................................206 Rear seats .........................................................132
Adjustment ..................................................... 133
Folding down the rear seatbacks ....... 133
Head restraints............................................. 145
Seat heaters ................................................... 318
Rear side marker lights Light switch .................................................. 200
Replacing light bulbs ............................... 400
Rear turn signal lights Replacing light bulbs ...................400, 404
Turn signal lever .......................................... 194
Wattage ......................................................... 468
Rear view mirror Inside rear view mirror ............................. 149
Outside rear view mirrors...................... 150
Rear window defogger ............................. 306
Rear window wiper.......................................210
Refueling Capacity ......................................................... 462
Fuel types ....................................................... 462
If the fuel filler do or cannot be opened
..........................................................................446
Opening the fuel tank cap ....................... 211
Regenerative braking ....................................67
Remote Touch .............................................. 298
Replacing Electronic key battery ..............................393
Fuses................................................................ 395
Light bulbs .................................................... 399
Tires .................................................................. 432
Resetting the message indicating mainte- nance is required ...................................... 362
Rev indicator .................................................... 85
Rev peak............................................................. 85
Road Sign Assist .......................................... 236
RSA (Road Sign Assist) ............................ 236
S
Seat belt reminder light....................421, 422
Seat belts............................................................ 26 Automatic Locking Retractor................. 28
Child restraint system installation ......... 46