recommended LEXUS RX450H 2019 User Guide

3924-6. Driving tips
RX450h_RX450hL_U
To enable the windshield wi pers to be lifted when heavy snow or icy conditions
are expected, change the rest position of the windshield wipers from the
retracted position below the hood to th e service position using the wiper lever.
(
P. 270)
■Tire chain installation
Observe the following precautions when installing and removing chains:
●Install and remove tire chains in a safe location.
●Install tire chains on the front tires only. Do not install tire chains on the rear tires.
●Install tire chains on front tires as tightly as possible. Retighten chains after driving
1/4 - 1/2 mile (0.5 - 1.0 km).
●Install tire chains following the instru ctions provided with the tire chains.
Windshield wipers
WARNING
■Driving with snow tires
Observe the following precautions to reduce the risk of accidents.
Failure to do so may result in a loss of vehi cle control and cause death or serious injury.
●Use tires of the specified size.
●Maintain the recommended level of air pressure.
●Do not drive in excess of 75 mph (120 km/h ), regardless of the type of snow tires
being used.
●Use snow tires on all, not just some wheels.
■Driving with tire chains
Observe the following precautions to reduce the risk of accidents.
Failure to do so may result in the vehicle being unable to be driven safely, and may
cause death or serious injury.
●Do not drive in excess of the speed limit specified for the tire chains being used, or
30 mph (50 km/h), whichever is lower.
●Avoid driving on bumpy road surfaces or over potholes.
●Avoid sudden acceleration, abrupt steering, sudden braking and shifting operations
that cause sudden engine braking.
●Slow down sufficiently before entering a cu rve to ensure that vehicle control is main-
tained.
●Do not use the LKA (Lane-Keeping Assist) system.

478
RX450h_RX450hL_U5-11. Bluetooth
®
If there is a problem with the hands-free system or a Bluetooth® device, first
check the table below.
When using the hands-free system with a Bluetooth® device
What to do if... (Troubleshooting)
The hands-free system or Bluetooth® device does not work.
The connected device may not be a compatible Bluetooth® cellular phone.
 For a list of specific devices which operat ion has been confirmed on this system,
check with your Lexus dealer or the following website:
http://www.lexus. com/MobileLink
The Bluetooth® version of the connected cellular phone may be older than the speci-
fied version.
 Use a cellular phone with Bluetooth
® version 2.0 or higher (recommended: Ver.
3.0 with EDR or higher). ( P. 484)

4845-11. Bluetooth®
RX450h_RX450hL_U
■Compatible models
The Bluetooth® audio system supports portable audio players with the following specifi-
cations
●Bluetooth® specifications:
Ver. 2.0 or higher (Recommend ed: Ver. 3.0 +EDR or higher)
●Profiles:
• A2DP (Advanced Audio Distribution Profile) Ver. 1.0, or higher
(Recommended: Ver. 1.3 or higher)
This is a profile to transmit stereo audio or high quality sound to the audio system.
• AVRCP (Audio/Video Remote Control Profile) Ver. 1.0 or higher (Recommended: Ver. 1.5 or higher)
This is a profile to allow re mote control the A/V equipment.
However, please note that some functions may be limited depending on the type of por-
table audio player connected.
The hands-free system supports cellular ph ones with the following specifications.
●Bluetooth® specification:
Ver. 2.0 or higher (Recommend ed: Ver. 3.0 +EDR or higher)
●Profiles:
• HFP (Hands Free Profile) Ver. 1.0 or higher (Recommended: Ver. 1.6 or higher)
This is a profile to allow hands-free phone calls using a cellular phone or head set. It
has outgoing and incoming call functions.
• OPP (Object Push Profile) Ver. 1.1 or higher (Recommended: Ver. 1.2) This is a profile to transfer phonebook data. When a Bluetooth
® compatible cellular
phone has both PBAP and OPP, OPP cannot be used.
• PBAP (Phone Book Access Profile) Ver. 1.0 or higher (Recommended: Ver. 1.1) This is a profile to transfer phonebook data.
• MAP (Message Access Pr ofile) Ver.1.0 or higher
This is a profile to using phone message.
If the cellular phone does not support HFP, yo u cannot register it with the hands-free sys-
tem. OPP, PBAP or MAP services must be selected individually.
■Reconnecting the portable audio player
If the portable audio player is disconnected due to poor reception when the power
switch is in ACCESSORY or ON mode, the system automatically reconnects the porta-
ble audio player.
If you have switched off the portable audio player yourself, follow the instructions below
to reconnect:
●Select the portable audio player again
●Enter the portable audio player
■When you sell your car
Be sure to delete your personal data. ( P. 415)

5206-2. Using the air conditioning system and defogger
RX450h_RX450hL_U
■Ventilation and air conditioning odors
●To let fresh air in, set the air conditioning system to the outside air mode.
●During use, various odors from inside and outside the vehicle may enter into and accu-
mulate in the air conditioning system. This may then cause odor to be emitted from the
vents.
●To reduce potential odors from occurring:
• It is recommended that the air conditioning system be set to outside air mode prior
to turning the vehicle off.
• The start timing of the blower may be dela yed for a short period of time immediately
after the air conditioning system is started in automatic mode.
■Air conditioning filter
P. 625
■Customization
Some functions can be customized ( P. 736)
WARNING
■To prevent the windshield from fogging up
●Do not use during cool air operation in extremely humid weather. The differ-
ence between the temperature of the outside air and that of the windshield can cause
the outer surface of the windshield to fog up, blocking your vision.
■To prevent burns
●Do not touch the rear view mirror surfaces when the outside rear view mirror defog-
gers are on.
●Do not touch the glass at lower part of the windshield or to the side of the front pillars
when the windshield wiper de-icer is on. (if equipped)
●Do not place anything on the instrument
panel which may cover th e air outlets. Other-
wise, air flow may be obstructed, preventing
the windshield defoggers from defogging.

5606-5. Using the other interior features
RX450h_RX450hL_U
The HomeLink® wireless control system in your vehicle has 3 buttons which can
be programmed to operate 3 different de vices. Refer to the programming meth-
ods on the following pages to determine the method which is appropriate for the
device.
HomeLink
® indicator light
Garage door operation indicators
HomeLink
® icon
Illuminates while HomeLink® is operat-
ing.
Buttons
■Before programming HomeLink®
●During programming, it is possible that garage doors, gates, or other
devices may operate. For this reason, make sure that people and objects
are clear of the garage door or other devices. ( P. 566)
●It is recommended that a new batter y be placed in the remote control
transmitter for more accurate programming.
●Garage door opener motors manufa ctured after 1995 may be equipped
with rolling code protection. If this is the case, you may need a stepladder
or other sturdy, safe device to reach the “Learn” or “Smart” button on the
garage door opener motor.
Garage door opener
The garage door opener can be programmed to operate garage doors, gates,
entry doors, door locks, home lightin g systems, security systems, and other
devices.
Programming the HomeLink®
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RX450h_RX450hL_U
7
Maintenance and care
7-2. Maintenance
General maintenance should be performed on a daily basis. This can be done by
yourself or by a Lexus dealer.
Scheduled maintenance should be perfor med at specified intervals according to
the maintenance schedule.
For details about maintenance items and sc hedules, refer to the “Warranty and Ser-
vice Guide”, “Owner’s Manual Supplement” or “Scheduled Maintenance”.
You can perform some maintena nce procedures by yourself.
Please be aware that do-it-yourself maintenance may affect warranty coverage.
The use of Lexus repair manuals is recommended.
For details about warranty co verage, refer to the separate “Owner’s Guide”, “War-
ranty and Service Guide”, “Owner’s Manu al Supplement” or “Warranty Booklet”.
Maintenance requirements
To ensure safe and economical driving, day-to-day care and regular mainte-
nance are essential. It is the owner’s re sponsibility to perform regular checks.
Lexus recommends the following maintenance:
General maintenance
Scheduled maintenance
Do-it-yourself maintenance

5887-2. Maintenance
RX450h_RX450hL_U
■Repair and replacement
It is recommended that genuine Lexus parts be used for repairs to ensure performance
of each system. If non-Lexus parts are used in replacement or if a repair shop other than
a Lexus dealer performs repairs, confirm the warranty coverage.
■Resetting the message indicating main tenance is required (U.S.A. only)
After the required maintenanc e is preformed according to the maintenance schedule,
please reset the message.
To reset the message, follow the procedures described below:
Select on the multi-information display.( P. 108)
Press or of the meter control swit ch, select the “Scheduled Maintenance”
screen and then press and hold the .
Select the “Yes” and push .
A message will be displayed on the multi- information display when the reset proce-
dure has been completed.
■Allow inspection and repairs to be performed by a Lexus dealer
●Lexus technicians are well-trained specialists and are kept up to date with the latest ser-
vice information. They are well informed about the operat ion of all systems on your
vehicle.
●Keep a copy of the repair order. It proves that the maintenance that has been per-
formed is under warranty co verage. If any problem should arise while your vehicle is
under warranty, your Lexus dealer will promptly take care of it.
WARNING
■If your vehicle is not properly maintained
Improper maintenance could result in seriou s damage to the vehicle and possible seri-
ous injury or death.
■Handling of the 12-volt battery
●Engine exhaust, some of its constituents, and a wide variety of automobile compo-
nents contain or emit chemicals known to th e State of California to cause cancer and
birth defects and other reproductive ha rm. Work in a well ventilated area.
●Oils, fuels and fluids contained in vehicles as well as waste produced by component
wear contain or emit chemicals known to the State of California to cause cancer and
birth defects or other reproductive harm. Avoid exposure and wash any affected area
immediately.
●12-volt battery posts, terminals and related accessories contain lead and lead com-
pounds which are known to cause brain damage. Wash your hands after handling.
(  P. 605)
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6157-3. Do-it-yourself maintenance
7
Maintenance and care
RX450h_RX450hL_U
■Maximum load of tire
Check that the maximum load of the replacement tire is greater than 1/2 of the Gross
Axle Weight Ratings (GAWR) of either the front axle or the rear axle, whichever is
greater.
■Tire types
●Summer tires
Summer tires are high-speed performance tires best suited to highway driving under
dry conditions. Since summer tires do not have the same traction performance as
snow tires, summer tires are inadequate for driving on snow-covered or icy roads. For
driving on snow-covered roads or icy road s, the use of snow tires is recommended.
When installing snow tires, be sure to replace all four tires.
●All season tires
All season tires are designed to provide better traction in snow and to be adequate for
driving in most winter conditions as well as for use year-round. All season tires, how-
ever, do not have adequate traction perfor mance compared with snow tires in heavy
or loose snow. Also, all season tires fall short in acceleration and handling perfor-
mance compared with summer tires in highway driving.
●Snow tires
For driving on snow-covered roads or icy roads, we recommend using snow tires. If
you need snow tires, select ti res of the same size, construction and load capacity as the
originally installed tires. Since your vehicle has radial tires as original equipment, make
sure your snow tires also have radial cons truction. Do not install studded tires without
first checking local regulations for possible restrictions. Snow tires should be installed
on all wheels. ( P. 390)
■Initializing the tire pressure warning system
Initialize the system with the tire inflation pressure adjusted to the specified level.
■If the tread on snow tires wears down below 0.16 in. (4 mm)
The effectiveness of the tires as snow tires is lost.
■If you press the tire pressure warning reset switch accidentally
If initialization is performed, adjust the tire inflation pressure to the specified level and ini-
tialize the tire pressure warning system again.
For the GAWR, see the Ce
rtification Label. For
the maximum load of the tire, see the load limit
at maximum cold tire inflation pressure men-
tioned on the sidewall of the tire. ( P. 723)

6197-3. Do-it-yourself maintenance
7
Maintenance and care
RX450h_RX450hL_U
WARNING
■When inspecting or replacing tires
Observe the following precautions to prevent accidents.
Failure to do so may cause damage to parts of the drive train as well as dangerous han-
dling characteristics, which may lead to an accident resulting in death or serious injury.
●Do not mix tires of different makes, models or tread patterns.
Also, do not mix tires of remarkably different treadwear.
●Do not use tire sizes other than those recommended by Lexus.
●Do not mix differently constructed tires (radial, bias-belted or bias-ply tires).
●Do not mix summer, all season and snow tires.
●Do not use tires that have be en used on another vehicle.
Do not use tires if you do not know how they were used previously.
●Do not tow if your vehicle has a compact spare tire installed.
■When initializing the tire pressure warning system
Do not initializing tire inflatio n pressure without first adjusting the tire inflation pressure
to the specified level. Otherwise, the tire pressure warning light may not come on even
if the tire inflation pressure is low, or it may come on when the tire inflation pressure is
actually normal.
NOTICE
■Repairing or replacing tires, wheels, tire pressure warning valves, transmitters and
tire valve caps
●When removing or fitting the wheels, tires or the tire pressure warning valves and
transmitters, contact your Lexus dealer as the tire pressure warning valves and trans-
mitters may be damaged if not handled correctly.
●Make sure to install the tire valve caps. If the tire valve caps are not installed, water
could enter the tire pressure warning valves and the tire pressure warning valves
could be bound.
●When replacing tire valve caps, do not use tire valve caps other than those specified.
The cap may become stuck.
■To avoid damage to the tire pressu re warning valves and transmitters
When a tire is repaired with liquid sealants, the tire pressure warning valve and trans-
mitter may not operate properly. If a liquid sealant is used, contact your Lexus dealer or
other qualified service shop as soon as possible. Make sure to replace the tire pressure
warning valve and transmitter when replacing the tire. ( P. 612)
■Driving on rough roads
Take particular care when driving on roads with loose surfaces or potholes.
These conditions may cause lo sses in tire inflation pressure, reducing the cushioning
ability of the tires. In addition, driving on rough roads may cause damage to the tires
themselves, as well as the vehicle’s wheels and body.
■If tire inflation pressure of ea ch tire becomes low while driving
Do not continue driving, or your tires and/or wheels may be ruined.

6207-3. Do-it-yourself maintenance
RX450h_RX450hL_U
The recommended cold tire inflation
pressure and tire size are displayed on
the tire and loading information label.
( P. 717)
Tire inflation pressure
Tire inflation pressure