turn LEXUS RX450H 2019 Owners Manual

7289-1. Specifications
RX450h_RX450hL_U
This information has been prepared in acco rdance with regulations issued by the
National Highway Traffic Safety Administra tion of the U.S. Department of Trans-
portation.
It provides the purchasers and/or prospe ctive purchasers of Lexus vehicles with
information on uniform tire quality grading.
Your Lexus dealer will help answer any ques tions you may have as you read this infor-
mation.
■DOT quality grades
All passenger vehicle tires must conform to Federal Safety Requirements in
addition to these grades. Quality grades can be found where applicable on
the tire sidewall between tread shoulder and maximum section width.
For example: Treadwear 200 Traction AA Temperature A
■Treadwear
The treadwear grade is a comparative rati ng based on the wear rate of the tire
when tested under controlled conditio ns on a specified government test
course.
For example, a tire graded 150 would wear one and a half (1 - 1/2) times as well on
the government course as a tire graded 100.
The relative performance of tires depends upon the actua l conditions of their use.
Performance may differ significantly from the norm due to variations in driving
habits, service practices and difference s in road characteristics and climate.
■Traction AA, A, B, C
The traction grades, from highest to lowest, are AA, A, B and C, and they rep-
resent the tire’s ability to stop on wet pavement as measured under controlled
conditions on specified government test surfaces of asphalt and concrete.
A tire marked C may have poor traction performance.
Warning: The traction grade assigned to this tire is based on braking (straight
ahead) traction tests and does not include cornering (turning) traction.
Uniform Tire Quality Grading

7449-2. Customization
RX450h_RX450hL_U
■Turn signal lever ( P. 252)
■Automatic light control system ( P. 258)
■Lights (P. 258)
*1:Except for Canada
*2: If equipped
■Rain-sensing windshield wipers (P. 267)
FunctionDefault settingCustomized setting
The number of times the turn sig-
nal lights flash automatically
when the turn signal lever is
moved to the first position during
a lane change
3
5
—O7
Off
12
FunctionDefault settingCustomized setting
Light sensor sensitivityStandard-2 to 2OO
Time elapsed before headlights
automatically turn off after doors
are closed 30 seconds
Off
OO
60 seconds
90 seconds
12
FunctionDefault settingCustomized setting
Daytime running lightsOnOff*1OO
Welcome lightingOnOff—O
AFS (Adaptive Front-lighting
System)
*2OnOff—O
Windshield wiper linked head-
light illuminationOnOff—O
12
FunctionDefault settingCustomized setting
Wiper operation when the wiper
switch is in the “AUTO” positionRain-sensing oper-ationIntermittent opera-tion linked to vehi-
cle speed (with
interval adjuster)
—O
12

7479-2. Customization
9
Vehicle specifications
RX450h_RX450hL_U
■Illumination (P. 528)
*:If equipped
FunctionDefault settingCustomized setting
Time elapsed before the interior
lights turn off15 seconds
Off
OO7.5 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
OO7.5 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
12

7489-2. Customization
RX450h_RX450hL_U
■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.
FunctionDefault settingCustomized setting
Vehicle speed linked seat belt
reminder buzzerOnOff—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 system is operating while
customizing features.
12

766
RX450h_RX450hL_UWhat to do if... (Troubleshooting)
What to do if... (Troubleshooting)
●If you lose your mechanical keys, ne
w genuine mechanical keys can be made
by your Lexus dealer. ( P. 133)
●If you lose your electronic keys, the risk of vehicle theft increases significantly.
Contact your Lexus dealer immediately. ( P. 135)
●Is the electronic key battery weak or depleted? ( P. 630)
●Is the power switch in ON mode?
When locking the doors, turn the power switch off. (P. 240)
●Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the electronic key on your
person.
●The function may not operate properly du e to the condition of the radio wave.
( P. 160)
●Is the child-protector lock set?
The rear door cannot be opened from in side the vehicle when the lock is set.
Open the rear door from outside and then unlock the child-protector lock.
( P. 139)
If you have a problem, check the foll owing before contacting your Lexus
dealer.
The doors cannot be locked, unlocked, opened or closed
You lose your keys
The doors cannot be locked or unlocked
The rear door cannot be opened

767What to do if... (Troubleshooting)
RX450h_RX450hL_U
●Did you press the power switch while firmly depressing the brake pedal? \
(P. 239)
●Is the shift lever in P? ( P. 241)
●Is the electronic key anywhere detectable inside the vehicle? ( P. 158)
●Is the steering wheel unlocked? ( P. 242)
●Is the electronic key battery weak or depleted?
In this case, the hybrid system can be started in a temporary way. ( P. 693)
●Is the 12-volt battery discharged? ( P. 695)
●Is the power switch in ON mode?
If you cannot release the shift lever by depressing the brake pedal with the
power switch in ON mode ( P. 250)
●It is locked automatically to prevent theft of the vehicle. ( P. 242)
●Is the window lock switch pressed?
The power window except for the one at the driver’s seat cannot be operated
if the window lock switch is pressed. ( P. 196)
●The auto power off function will be operated if the vehicle is left in
ACCESSORY or ON mode (the hybrid sy stem is not operating) for a period
of time. ( P. 241)
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
The steering wheel cannot be turned after the hybrid system is stopped
The windows do not open or close by operating the power window
switches
The power switch is turned off automatically

768What to do if... (Troubleshooting)
RX450h_RX450hL_U
●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 types 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 warning 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

776Alphabetical index
RX450h_RX450hL_U
Emergency, in case ofIf 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

777Alphabetical index
RX450h_RX450hL_U
Flat tire ...................................................... 673
Floor mats ................................................... 28
FluidBrake ..........................................................716
Transmission...........................................716
Washer .................................................. 604
Fog lights Replacing light bulbs ........................637
Switch.......................................................266
Front automatic air conditioning system ......................... 507
Front passenger footwell hooks ...................................................... 557
Front passenger occupant classification system .............................47
Front passenger’s seat belt reminder light ..................................... 662
Front seat heaters................................. 526
Front seats ................................................. 167 Adjustment ..............................................167
Cleaning ................................................ 584
Correct driving posture ....................30
Driving position memory .................. 181
Head restraints ..................................... 186
Power easy access system .............. 181
Seat heaters ..........................................526
Seat position memory......................... 181
Front side marker lights Light switch .......................................... 258
Replacing light bulbs ........................637
Wattage ....................................................719 Front turn signal lights
Replacing light bulbs ....................... 637
Turn signal lever ................................. 252
Wattage ................................................... 719
Fuel Capacity................................................... 712
Fuel gauge ............................................... 96
Information............................................ 720
Refueling .................................................274
Type............................................................ 712
Fuel filler door......................................... 274 Refueling .................................................274
When the fuel filler door cannot be opened ..........................277
Fuses...........................................................632
Garage door opener.......................... 560
Gauges.........................................................96
Glove box ............................................... 534
Grocery bag hooks............................... 541
F
G

780Alphabetical index
RX450h_RX450hL_U
Keyless entrySmart access system with push-button start ............................. 158
Wireless remote control ....... 136, 142
Keys..............................................................132 Battery-saving function .................... 160
Electronic key ........................................132
Engine switch .......................................239
If the electronic key does not operate properly.............................692
If you lose your keys ................ 133, 135
Key number plate ................................132
Keyless entry ..........................................132
Mechanical key .................................... 133
Power switch........................................239
Replacing the battery ...................... 630
Warning buzzer ...................................137
Wireless remote control ..................132
Knee airbags ............................................. 37 Lane-Keeping Assist (LKA) ............. 297
Language (multi-information
display) ..................................................... 113
LATCH anchors ....................................... 67
Lever Auxiliary catch lever .........................595
Hood lock release lever.................595
Shift lever ............................................... 246
Turn signal lever ................................. 252
Wiper lever................................ 267, 272
Lexus Climate Concierge................ 506
Lexus Display Audio controller.............................................. 402
Lexus Enform
*
Lexus Enform Remote*
LEXUS Enform Safety Connect.................................................. 571
LEXUS Enform Service Connect................................................. 577
Lexus parking assist monitor ........... 363 Display..................................................... 364
Precautions ........................................... 370
Lexus Safety System+ ......................... 279 Automatic High Beam.................... 262
Dynamic radar cruise control with full-speed range ................. 306
LKA (Lane-Keeping Assist) ........ 297
PCS (Pre-Collision System) ...... 286
KL