2020 LEXUS RX450H service

384
RX350/RX350L_U4-6. Driving tips
●Use fluids that are appropriate to
the prevailing outside temperatures.
•Engine oil
• Engine coolant
• Washer fluid
●Have a service technician inspect the condition of the battery.
●Have the vehicle fitted with four snow tires or purchase a set of tire chains for
the front tires.
Ensure that all tires are of the specified size and the same brand, and that chains
match the size of the tires.
Perform the following according to the driving conditions:
●Do not try to forcibly open a window or move a wiper that is frozen. Pour
warm water over the frozen area to me lt the ice. Wipe away the water imme-
diately to prevent it from freezing.
●To ensure proper operation of the c limate control system fan, remove any
snow that has accumulated on the air inlet vents in front of the windshield.
●Check for and remove any excess ice or snow that may have accumulated on
the exterior lights, vehicle’s roof, chassi s, around the tires or on the brakes.
●Remove any snow or mud from the bottom of your shoes before getting in the
vehicle.
Winter driving tips
Carry out the necessary preparations an d inspections before driving the vehi-
cle in winter. Always drive the vehicle in a manner appropriate to the prevail-
ing weather conditions.
Pre-winter preparations
Before driving the vehicle

3864-6. Driving tips
RX350/RX350L_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. 265)
■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.

3894-6. Driving tips
4
Driving
RX350/RX350L_U
Your vehicle is not designed to be driven off-road. However, in the event that
off-road driving cannot be avoided, please observe the following precautions to
help avoid the areas prohibited to vehicles.
●Drive your vehicle only in areas wher e off-road vehicles are permitted to
travel.
●Respect private property. Get owner’s permission before entering private
property.
●Do not enter areas that are closed. Honor gates, barriers and signs that
restrict travel.
●Stay on established road s. When conditions are wet, driving techniques
should be changed or travel dela yed to prevent damage to roads.
■Additional information for off-road driving
For owners in U.S. mainland, Hawaii and Puerto Rico:
To obtain additional information pertaining to driving your vehicle off-road, consult the
following organizations.
●State and Local Parks and Recreation Departments
●State Motor Vehicle Bureau
●Recreational Vehicle Clubs
●U.S. Forest Service and Bu reau of Land Management
Off-road driving

3904-6. Driving tips
RX350/RX350L_U
WARNING
■Off-road driving precautions
Always observe the following precautions to minimize the risk of death, serious injury
or damage to your vehicle:
●Drive carefully when off the road. Do not ta ke unnecessary risks by driving in danger-
ous places.
●Do not grip the steering wheel spokes when driving off-road. A bad bump could jerk
the wheel and injure your hands. Keep both hands and especially your thumbs on the
outside of the rim.
●Always check your brakes for effectiveness immediately after driving in sand, mud,
water or snow.
●After driving through tall grass, mud, rock , sand, rivers, etc., check that there is no
grass, bush, paper, rags, stone, sand, etc. adhering or trapped on the underbody.
Clear off any such matter from the underbody. If the vehicle is used with these materi-
als trapped or adhering to the underbody, a breakdown or fire could occur.
●When driving off-road or in rugged terrain , do not drive at excessive speeds, jump,
make sharp turns, strike obje cts, etc. This may cause loss of control or vehicle rollover
causing death or serious injury. You are also risking expensive damage to your vehi-
cle’s suspension and chassis.
NOTICE
■To prevent water damage
Take all necessary safety measures to ensure that water damage to the engine or other
components does not occur.
●Water entering the engine air intake will cause severe engine damage.
●Water entering the automatic transmission will cause deterioration in shift quality,
locking up of your transmission accompanied by vibration, and ultimately damage.
●Water can wash the grease from wheel be arings, causing rusting and premature fail-
ure, and may also enter the differential, transmission and transfer (AWD models only)
case, reducing the gear oi l’s lubricating qualities.
■When you drive through water
If driving through water, such as when cro ssing shallow streams, first check the depth of
the water and the bottom of the riverbed for firmness. Drive slowly and avoid deep
water.
■Inspection after off-road driving
●Sand and mud that has accumulated around brake discs may affect braking efficiency
and may damage brake system components.
●Always perform a maintenance inspection afte r each day of off-road driving that has
taken you through rough terrain, sand, mud, or water. For scheduled maintenance
information, refer to the “Warranty and Services Guide/Owner’s Manual Supple-
ment/Scheduled Maintenance”.

4225-4. Using the radio
RX350/RX350L_U
HD Radio™ Technology is the digital evolution of analog AM/FM radio. Your
radio product has a special receiver which allows it to receive digital broadcasts
(where available) in addition to the analog broadcasts it already receives.
Digital broadcasts have better sound qua lity than analog broadcasts as digital
broadcasts provide free, crystal clear audio with no static or distortion. For more
information, and a guide to available radio stations and programming, refer to
www.hdradio.com
.
“HD Radio features included in Lexus radios:
Digital Sound - HD Radio broadcasts deliver crystal-clear, digital audio quality to
listeners.
HD2/HD3 Channels - FM stations can prov ide additional digital only audio pro-
gramming with expanded content and format choices on HD2/HD3 channels.
PSD - Program Service Data (PSD) gives you on-screen information such as art-
ist name and song title.
iTunes Tagging - Listeners can tag (store) songs they like for later review and pur-
chase through iTunes.
Artist Experience - Images related to the broadcast are displayed on the radio
screen, such as album cover art and station logos.”
HD Radio™ Technology
HD Radio Technology manufactured under license from iBiquity Digital Corpora-
tion. U.S. and Foreign Patents. HD Radio™ and the HD, HD Radio, and “Arc” logos
are proprietary trademarks of iBiquity Digital Corp.

4235-4. Using the radio
5
Lexus Display Audio system
RX350/RX350L_U
■HD Radio™ Technology troubleshooting guide
■Reception sensitivity
●Maintaining perfect radio reception at all times is difficult due to the continually chang-
ing position of the antenna, differences in si gnal strength and surrounding objects, such
as trains, transmitters, etc.
●The radio antenna is mounted inside the rear window. To maintain clear radio reception,
do not attach metallic window tinting or other metallic objects to the antenna wire
mounted inside the rear window.
ExperienceCauseAction
Mismatch of time align-
ment- a user may hear a
short period of program-
ming replayed or an echo,
stutter or skip.The radio stations analog
and digital volume are not
properly aligned or the sta-
tion is in ballgame mode.None, radio broadcast
issue. A user can contact
the radio station.
Sound fades, blending in
and out.Radio is shifting between
analog and digital audio.
Reception issue, may
clear-up as the vehicle
continues to be driven. Set
“HD Radio” to off, can
force radio in an analog
audio.
Audio mute condition
when an HD2/HD3 multi-
cast channel had been
playing.The radio does not have
access to digital signals at
the moment.
This is normal behavior,
wait until the digital signal
returns. If out of the cover-
age area, seek a new sta-
tion.
Audio mute delay when
selecting an HD2/HD3
multicast channel preset.
The digital multicast con-
tent is not available until
HD Radio™ broadcast can
be decoded and make the
audio available. This takes
up to 7 seconds.
This is normal behavior,
wait for the audio to
become available.
Text information does not
match the present song
audio.Data service issue at the
radio broadcaster.
Broadcaster should be
notified. Complete the
form: www.ibiquity.com/
automotive/
report_radio_station_
experiences.
No text information shown
for the present selected
frequency.Data service issue by the
radio broadcaster.
Broadcaster should be
notified. Complete the
form: www.ibiquity.com/
automotive/report_radio_station_
experiences.

4585-9. Bluetooth® Phone
RX350/RX350L_U
You can transfer the phone numbers in a Bluetooth® phone to the system.
Operation methods differ between PBAP (Phone Book Access Profile) compat-
ible and PBAP incompatible Bluetooth
® phones. If the cellular phone does not
support either PBAP or OPP (Object Pu sh Profile) service, you cannot transfer
contacts.
Press the off-hook switch on the steering wheel.
If the phonebook is empty, a message will be displayed.
For a PBAP compatible Bluetooth® phone and “Automatic Transfer” is off
To enable automatic transfer of new contacts from a cellular phone every time
it is connected, select “Always”. ( P. 468)
Select “Once” if you want to transf er new contacts from a cellular phone.
For a PBAP incompatible and OPP compatible Bluetooth® phone
Select “Transfer” and operate your ce llular phone to transfer new contacts
from a cellular phone.
Select “Add” if you want to add a new contact manually.
When the phonebook is empty
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4615-9. Bluetooth® Phone
5
Lexus Display Audio system
RX350/RX350L_U
Select “Transmit Volume”. To restore
default volume, move the controller to
the left on the “Transmit Volume”
screen and then select “Default”.
Move the controller to the left and then select “In-Call Volume”. You can also
adjust the volume using the “PWR•VOL ” knob or the steering switches.
Select “Mute”.
When using phone services such as an answering service or a bank, you can
store phone numbers and code numbers in the contacts using “p” or “w” symbols
(eg. 056133 w 0123p#1).
Contact including a phone number only
Move the controller to the left and then select “0-9”.
Input the number.
Phone number containing a “p” symbol
When the “p” symbol is dialed in an ou tgoing call, there will be a pause for 2
seconds before the following di gits are dialed automatically.
Speaking on the phone
The following screen is displayed when speaking on the phone.
To adjust the transmit volume
To adjust in call volume
To prevent the other party from hearing your voice
Inputting tones
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