warning LEXUS RX450h 2018 Owners Manual

740 9-2. Customization
RX450h_RX450hL _U_OM48F85U■
Smart access system with push-button start and wireless remote control
( → P. 136, 158)
■
Smart access system with push-button start ( → P. 136, 158)Function Default setting Customized setting
Operation buzzer volume 5 Off
O O
1 to 7
Operation signal
(Emergency flashers) On Off O O
Time elapsed before automatic
door lock function is activated if
door is not opened after being
unlocked 60 seconds Off
— O30 seconds
120 seconds
Open door warning buzzer Off On — O
Reservation lock On Off — O 1 2
Function Default setting Customized setting
Smart access system with push-
button start On Off — O
The doors that are unlocked
using the smart access system
with push-button start can be
selected Driver’s door All the doors O O
Number of consecutive door
lock operations 2 times As many as desired — O 1 2

748 9-2. Customization
RX450h_RX450hL _U_OM48F85U■
Seat belt reminder ( → P. 662)■
Vehicle customization ●
When the smart access system with push-button start is off, the entry unlock function
cannot be customized. ●
When the doors remain closed after unlocking the doors and the timer activated auto-
matic door lock function activates, signals will be generated in accordance with the
operation buzzer volume and operational si gnal (Emergency flashers) function set-
tings. ●
Some settings can be changed using a switch or the audio system screen. If a setting is
changed using a switch , the changed setting will not be reflected on the audio system
screen until the power switch is turned off and then to ON mode.Function Default setting Customized setting
Vehicle speed linked seat belt
reminder buzzer On Off — O
WARNING ■
Cautions during customization
As the hybrid system needs to be operating during customization, ensure that the vehi-
cle is parked in a place with adequate ventil ation. In a closed area such as a garage,
exhaust gases including harmful carbon mo noxide (CO) may collect and enter the
vehicle. This may lead to death or a serious health hazard.
NOTICE ■
During customization
To prevent 12-volt battery discharge, ensure that the hybrid syst em is operating while
customizing features. 1 2

749
RX450h_RX450hL _U_OM48F85U 9
Vehicle specifications 9-3. Initialization
Items to initialize The following items must be initialized for normal system operation after such
cases as the 12-volt battery being re connected, or maintenance being per-
formed on the vehicle. Item When to initialize Reference
Message indicating mainte-
nance is required (U.S.A. only) • After the maintenance is per-
formed P. 588
Tire pressure warning system • When changing the tire inflation
pressure by changing traveling
speed
• When changing the tire size
• When rotating the tires P. 613
Oil maintenance • After the maintenance is per-
formed P. 600
Intelligent Clearance Sonar
(ICS) • After reconnecting or changing
the 12-volt battery P. 353
Power back door • After reconnecting or changing
the 12-volt battery P. 150

768 What to do if... (Troubleshooting)
RX450h_RX450hL _U_OM48F85U●
The seat belt reminder light is flashing
Are the driver and the passengers wearing the seat belts?
( → P. 662, 662)●
The parking brake indicator is on
Is the parking brake released? ( → P. 253)
Depending on the situation, other type s of warning buzzer may also sound.
( → P. 660, 667) ●
Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds. ( → P. 86)
Do one of the following to stop the alarms: • Unlock the doors.
• Turn the power switch to ACCESSORY or ON mode, or start the hybrid system.
●
Is the message displayed on the multi-information display?
Check the message on the multi-information display. ( → P. 667)
●
When a warning light turns on or a wa rning message is displayed, refer to
P. 660, 667. A warning buzzer sounds during driving
An alarm is activated and the horn sounds
A warning buzzer sounds when leaving the vehicle
A warning light turns on or a warning message is displayed

770
RX450h_RX450hL _U_OM48F85UAlphabetical index
Alphabetical index A/C ............................................................ 507
Air conditioning filter........................625
Automatic air conditioning
system ..................................... 507, 522
S-FLOW mode ................................... 514
ABS (Anti-lock Brake System)....... 382
Warning light ........................................ 661
Adaptive Front-lighting System
(AFS) ...................................................... 259
Adaptive Variable Suspension
System ................................................... 383
AFS (Adaptive Front-lighting
System) .................................................. 259
Air conditioning filter .......................... 625
Air conditioning system
Air conditioning filter........................625
Automatic air conditioning
system ..................................... 507, 522
S-FLOW mode ................................... 514 Airbags .........................................................36
Airbag operating conditions .......... 43
Airbag precautions for your
child.......................................................... 39
Airbag warning light ....................... 660
Correct driving posture .................... 30
Curtain shield airbag
operating conditions ....................... 43
Curtain shield airbag
precautions ............................................ 41
Front passenger occupant
classification system..........................47
General airbag precautions ........... 39
Locations of airbags............................ 36
Modification and disposal of
airbags .....................................................42
Seat cushion airbag ..............................37
Side airbag operating
conditions ............................................. 43
Side airbag precautions .................... 39
Side and curtain shield airbags
operating conditions ....................... 43
Side and curtain shield airbags
precautions .......................................... 39
SRS airbag instructions
for Canadian owners ................... 754
SRS airbags ............................................. 36A

771Alphabetical index
RX450h_RX450hL _U_OM48F85UAlarm ............................................................ 86
Anchor brackets ...................................... 57
Antenna
Radio ........................................................429
Smart access system
with push-button start ................... 158
Anti-lock Brake System (ABS)....... 382
Warning light ........................................ 661
Approach warning.................................314
Armrest ....................................................558
Assist grips .............................................. 559
Audio system (with Lexus
Display Audio System) ...................400
Antenna ..................................................429
Audio input........................................... 409
AUX port.............................................. 409
Bluetooth ®
audio ............................. 459
CD player ..............................................433
iPod .......................................................... 440
MP3/WMA disc ...............................433
Optimal use ........................................... 419
Portable music player ..................... 448
Radio ........................................................426
Setup menu .............................................412
Steering wheel audio
switches .............................................. 406
USB memory ....................................... 444 Audio system
(with navigation system)
* Automatic air conditioning
system ......................................... 507, 522
Air conditioning filter ....................... 625
Rear automatic air conditioning
system .................................................. 522
S-FLOW mode....................................514
Automatic headlight leveling
system .................................................... 260
Automatic High Beam ........................262
Automatic light control system ...... 258
AUX port ................................................ 409
Auxiliary boxes .......................... 539, 544
* : Refer to the “NAVIGATION SYSTEM OWNER’S MANUAL”.

772 Alphabetical index
RX450h_RX450hL _U_OM48F85UBack door
Power back door .................................142
Touchless power back door ......... 144
Wireless remote control ..................142
Back-up lights
Replacing light bulbs ........................637
Wattage ....................................................719
Battery (12-volt battery)
Battery checking ............................... 605
If the 12-volt battery is
discharged ........................................ 695
Preparing and checking before
winter ................................................... 390
Replacing .............................................. 698
Warning light ...................................... 660
Battery (traction battery) ..................... 78
Blind Spot Monitor (BSM)..................319
Blind Spot Monitor
function ............................................ 323
Rear Cross Traffic Alert
function ............................................ 327 Bluetooth ®
............................................. 482
Audio system ....................................... 459
Hands-free system
(for cellular phone) .........................461
Bottle holders .........................................537
Brake
Brake Hold ........................................... 256
Fluid ............................................................ 716
Parking brake ...................................... 253
Regenerative braking ..........................76
Warning light ...................................... 660
Brake assist ............................................. 382
Brake Hold.............................................. 256
Warning light .........................................661
Break-in tips ............................................. 214
Brightness control
Instrument panel light control ........ 98
BSM (Blind Spot Monitor) ................. 319
Blind Spot Monitor function......... 323
Rear Cross Traffic Alert
function.................................................327B

774 Alphabetical index
RX450h_RX450hL _U_OM48F85UChild-protectors.....................................139
Cleaning.......................................580, 584
Aluminum wheels ............................... 581
Exterior................................................... 580
Interior .................................................... 584
Seat belts ............................................... 585
Clock ................................................ 96, 548
Coat hooks.............................................. 559
Compass .................................................. 567
Condenser .............................................. 602
Console box ........................................... 534
Consumption screen ................. 105, 124
Coolant
Capacity .................................................. 715
Checking................................................. 601
Preparing and checking
before winter ................................... 390
Cooling system ...................................... 601
Hybrid system overheating ..........702
Cornering lights .................................... 259
Cruise control
Dynamic radar cruise control
with full-speed range ................... 306
Cup holders ............................................ 535
Curtain shield airbags ........................... 37
Customizable features ....................... 736
Customized mode ............................... 379 Daytime running light system.......... 260
Defogger
Outside rear view mirrors ..............516
Rear window..........................................516
Windshield..............................................516
Differential ................................................ 716
Dimensions ............................................... 710
Dinghy towing ....................................... 238
Display
Dynamic radar cruise control
with full-speed range ...................306
Energy monitor..................................... 124
LKA (Lane-Keeping Assist)......... 302
Multi-information display.................. 101
Warning messages .......................... 667
Do-it-yourself maintenance............. 593
Doors
Automatic door locking and
unlocking system..............................139
Door lock................................................ 138
Outside rear view mirrors ..............193
Power back door ................................ 142
Rear door child-p rotectors ............139
Side doors ...............................................136
Side windows ........................................196 D

775Alphabetical index
RX450h_RX450hL _U_OM48F85UDrive information .................................. 105
Drive-start control ..................... 213, 249
Driver’s seat belt reminder light ..... 662
Driver’s seat position memory ........... 181
Driving
Break-in tips ...........................................214
Correct posture.....................................30
Driving mode select switch ..........379
Hybrid vehicle driving tips............ 388
Procedures ............................................. 212
Winter drive tips ................................ 390
Driving position memory...................... 181
Memory recall function.................... 184
Power easy access system .............. 181
Dynamic radar cruise control
with full-speed range ....................... 306 E-Four ....................................................... 383
ECB (Electronically Controlled
Brake System) .................................... 382
Eco drive mode......................................379
EDR (Event data recorder).....................11
Electric motor
Location .....................................................74
Specification ........................................... 712
Electric Power Steering (EPS) ....... 383
Warning light .........................................661
Electronic key .......................................... 132
Battery-saving function ....................159
If the electronic key does not
operate properly ............................ 692
Replacing the battery ......................630
Electronically Controlled
Brake System (ECB) ....................... 382
Emergency flashers ............................ 652 E

776 Alphabetical index
RX450h_RX450hL _U_OM48F85UEmergency, in case of
If a warning buzzer sounds.......... 660
If a warning light turns on.............. 660
If a warning message is
displayed.............................................667
If the 12-volt battery is
discharged ........................................ 695
If the electronic key does not
operate properly.............................692
If the hybrid system will
not start ............................................... 690
If you have a flat tire ..........................673
If you lose your keys ................ 133, 135
If you think something is
wrong .................................................. 659
If your vehicle becomes
stuck ..................................................... 706
If your vehicle has to
be stopped in an
emergency........................................ 653
If your vehicle needs to be
towed................................................... 654
If your vehicle overheats ................702
Energy monitor ....................................... 124 Engine
ACCESSORY mode ..................... 240
Compartment ..................................... 597
Engine switch ...................................... 239
Hood........................................................595
How to start the hybrid
system .................................................. 239
Identification number......................... 712
If your vehicle has to be
stopped in an emergency..........653
Ignition switch (power switch) .... 239
Overheating......................................... 702
Power switch ....................................... 239
Engine coolant
Capacity................................................... 715
Checking ................................................ 601
Preparing and checking
before winter ....................................390
Engine coolant temperature
gauge .........................................................96
Engine oil
Capacity................................................... 713
Checking .............................................. 598
Preparing and checking
before winter ....................................390
Engine oil maintenance data ........... 600
Engine switch ......................................... 239
Enhanced VSC ..................................... 382
EPS
(Electronic Power Steering) ........ 383
Warning light .........................................661
EV drive mode .......................................244
EV indicator ............................................... 76
Event data recorder (EDR).....................11