2019 LEXUS RX450H service

654
RX450h_RX450hL_U8-2. Steps to take in an emergency
The following may indicate a problem wi
th your hybrid transmission. Contact
your Lexus dealer or commercial towing service before towing.
●The hybrid warning message shows on and the vehicle does not move.
●The vehicle makes an abnormal sound.
Do not tow with a sling-type truck to
prevent body damage.
If your vehicle needs to be towed
If towing is necessary, we recommend having your vehicle towed by your
Lexus dealer or commercial towing se rvice, using a wheel-lift type truck or
flatbed truck.
Use a safety chain system for all towing, and abide by all state/provincial and
local laws.
If towing your vehicle with a wheel-lift type truck, use a towing dolly.
(  P. 655, 657)
Situations when it is necessary to contact dealers before towing
Towing with a sling-type truck

7219-1. Specifications
9
Vehicle specifications
RX450h_RX450hL_U
■Recommendation of the use of low emissions gasoline
Gasolines containing oxygenates such as ethers and ethanol, as well as reformulated
gasolines, are available in some cities. Thes e fuels are typically acceptable for use, pro-
viding they meet other fuel requirements.
Lexus recommends these fuels, since the form ulations allow for reduced vehicle emis-
sions.
■Non-recommendation of the use of blended gasoline
●If you use gasohol in your vehicle, be sure that it has an octane ra ting no lower than 91.
●Lexus does not recommend the use of gasoline containing methanol.
■Non-recommendation of the use of gasoline containing MMT
Some gasoline contains an octane enhancing additive called MMT
(Methylcyclopentadienyl Manganese Tricarbonyl).
Lexus does not recommend the use of gasoline that contains MMT. If fuel containing
MMT is used, your emission control system may be adversely affected.
The malfunction indicator lamp on the instru ment cluster may come on. If this happens,
contact your Lexus dealer for service.
■If your engine knocks
●Consult your Lexus dealer.
●You may occasionally notice light knocking for a short time while accelerating or driv-
ing uphill. This is normal and there is no need for concern.
●Use only gasoline containing up to 15% etha-
nol.
DO NOT use any flex-fuel or gasoline that
could contain more than 15% ethanol, includ-
ing from any pump labeled E30, E50, E85
(which are only some examples of fuel con-
taining more than 15% ethanol).DO NOT use gasoline
containing more than
15% ethanol.
(30% ethanol)
(50% ethanol)
(85% ethanol)

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

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

786Alphabetical index
RX450h_RX450hL_U
SensorAutomatic headlight system ........ 260
Camera sensor .................................... 281
Humidity sensor .................................. 521
Inside rear view mirror ..................... 192
Intuitive parking assist ...................... 332
Radar sensor ......................................... 281
Rain-sensing windshield wipers .................................................. 268
Touchless sensor ................................ 144
Service reminder indicators ............... 90
Shift lever Hybrid transmission ....................... 246
If the shift lever cannot be shifted from P ................................ 250
Shift lock system .............................. 250
Side airbags ............................................... 37
Side doors..................................................136
Side marker lights Light switch .......................................... 258
Replacing light bulbs ........................637
Side mirrors ..............................................193 Adjusting and folding........................ 193
Blind Spot Monitor (BSM)............. 319
Heaters..................................................... 516
Side turn signal lights Replacing light bulbs ........................637
Turn signal lever ................................. 252 Smart access system
with push-button start .......................158 Antenna location................................. 158
Entry functions ............................136, 142
Starting the hybrid system............. 239
Snow tires ................................................ 392
Spare tire Inflation pressure.................................. 717
Storage location ................................. 674
Spark plug ................................................. 715
Specifications........................................... 710
Speedometer .............................................96
Sport mode ..............................................379
Steering wheel ........................................189 Adjustment............................................. 189
Audio switches ...................................406
Heated steering wheel ................... 526
Power easy access system .............. 181
Telephone switches............................ 471
Stop lights Replacing light bulbs ....................... 637
Storage feature ..................................... 532
Storage precautions ........................... 532
Stuck If the vehicle becomes stuck........ 706
Sun visors..................................................547
Sunshade Panoramic moon roof..................... 204
Rear door .............................................. 557
Roof ............................................................201