steering wheel LEXUS RX450h 2018 Workshop Manual

392 4-6. Driving tips
RX450h_RX450hL _U_OM48F85UTo enable the windshield wi pers to be lifted when he avy 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 dr iven 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.

396 4-6. Driving tips
RX450h_RX450hL _U_OM48F85U [
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 hybrid battery
(traction battery), hybrid system or other components does not occur.●
Water entering the engine compartment may cause severe damage to the hybrid
system. Water entering the interior may cause the hybrid battery (traction battery)
stowed under the rear seats to short circuit.●
Water entering the hybrid transmission and rear electric motor (traction motor) will
cause deterioration in transmission qualit y. The malfunction indicator may come on,
and the vehicle may not be drivable. ●
Water can wash the grease from wheel be arings, causing rusting and premature fail-
ure, and may also enter the hybrid transmissi on case, reducing the gear oil’s lubricat-
ing 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”.

398
RX450h_RX450hL _U_OM48F85U 5-1. Basic Operations
Lexus Display Audio
system ......................................... 400
Steering wheel audio
switches.......................................406
Mobile Assistant......................... 407
USB/AUX ports ........................409
5-2. Setup
Setup menu ....................................412
General settings .......................... 413
Voice settings ............................... 416
Display settings .............................417
5-3. Using the audio system
Selecting the audio
source ........................................... 418
Optimal use of the audio
system ........................................... 419
Audio settings ............................. 420
Audio menu screen
operation .................................... 423
5-4. Using the radio
Radio operation.......................... 426
5-5. Playing an audio CD and
MP3/WMA/AAC discs
CD player operation ................ 4335 Lexus Display
Audio system

399
5 Lexus Display
Audio system
RX450h_RX450hL _U_OM48F85U5-6. Using an external device
Listening to an iPod .................. 440
Using USB memory
device...........................................444
Using the AUX port ................ 448
5-7. Connecting Bluetooth ®
Steps for using Bluetooth ®

devices .........................................449
Registering a Bluetooth ®

device............................................ 451
Selecting a Bluetooth ®

device ...........................................452
Connecting a Bluetooth ®

audio player ...............................453
Connecting a Bluetooth ®

phone ...........................................454
Displaying a Bluetooth ®

device details ........................... 455
Detailed Bluetooth ®

settings.........................................456
5-8. Bluetooth ®
Audio
Listening to Bluetooth ®

Audio............................................459 5-9. Bluetooth ®
Phone
Using a Bluetooth ®

Phone ............................................ 461
Making a call ................................ 463
Receiving a call ........................... 466
Speaking on the phone............ 467
Using a Bluetooth ®
phone
message ...................................... 469
Using the steering wheel
switches.........................................471
Bluetooth ®
phone
settings ........................................ 472
5-10. Phonebook
Contact settings ......................... 474
Messaging setting...................... 477
5-11. Bluetooth ®
What to do if...
(Troubleshooting)................... 478
Bluetooth ®
................................... 482
5-12. Other function
“Information” screen................ 488
USB photo ....................................490
Weather information................ 492
Voice command system ......... 493

406 5-1. Basic Operations
RX450h_RX450hL _U_OM48F85UVolume switch
• Increases/decreases volume
• Press and hold: Continuously
increases/decreases volume
Radio mode:
• Press: Select a radio station
• Press and hold: Seek up/down
CD, MP3/WMA/AAC disc, Bluetooth ®
, iPod or USB mode:
• Press: Select a track/file/video
• Press and hold: Quickly move up/d own through tracks/files/videos.
“MODE” switch
• Turns the power on, selects audio source
• Press and hold this switch to mute or pause the current operation. To can-
cel the mute or pause, press and hold.Steering wheel audio switches Some audio features can be controlled using the switches on the steering
wheel.
Operation may differ depending on th e type of audio system or navigation
system. For details, refer to the manual provided with the audio system or nav-
igation system.
Operating the audio system us ing the steering wheel switches1
2
WARNING ■
To reduce the risk of an accident
Exercise care when operating the audio switches on the steering wheel. 3

4075-1. Basic Operations
5
Lexus Display Audio system
RX450h_RX450hL _U_OM48F85UPress and hold the off hook switch
until you hear the beeps that indicate
the system is listening.
The Mobile Assistant can be used
only when the neighboring screen is
displayed. To cancel the Mobile Assistant, select
“Cancel”, or press and hold the off hook
switch.
To restart the Mobile Assistant for addi-
tional commands, press the off hook
switch. Mobile Assistant can only be
restarted after the sy stem responds to a
voice command. After some phone and
music commands, the Mobile Assistant
feature will automatically end to com-
plete the requested action.Mobile Assistant The Mobile Assistant feature will activate Apple’s Siri 
Eyes Free mode via
the steering wheel switches. To operat e the Mobile Assistant, a compatible
cellular phone must be registered and connected to this system via
Bluetooth 
. ( → P. 449) 1
2

408 5-1. Basic Operations
RX450h_RX450hL _U_OM48F85U■
Adjusting the volume
The volume of the Mobile Assist ant can be adjusted using the
“ PWR·VOL
” knob or
steering wheel volume switch es. The Mobile Assistant an d phone call volumes are syn-
chronized. ■
Microphone
It is not necessary to speak directly into the microphone when using the Mobile Assis-
tant. ●
Wait for the listening beeps before using the Mobile Assistant.●
The Mobile Assistant may not recognize commands in the following situations:
• When spoken too quickly.
• When spoken at a low or high volume.
• When the roof or windows are open.
• When passengers are talking while th e Mobile Assistan t is being used.
• When the air conditioning syst em’s fan speed is set high.
• When the air conditioning vents ar e turned toward the microphone.■
Mobile Assistant precautions ●
The available features and functions may vary based on the iOS version installed on the
connected device. ●
Some Siri features are limited in Eyes Free mode. If you attempt to use an unavailable
function, Siri will inform you that the function is not available. ●
If Siri is not enabled on the ce llular phone connected via Bluetooth 
, an error message
will be displayed on the screen. ●
While a phone call is active, the Mobile Assistant cannot be used. ●
If using the navigation featur e of the cellular phone, ensure the active audio source is
Bluetooth 
audio or iPod in order to hear turn by turn direction prompts.

418
RX450h_RX450hL _U_OM48F85U5-3. Using the audio system
Press the “AUDIO” button to display the “Source” screen.If the “Source” screen is not displayed, press the button again.
Select the desired audio source. The audio source can be se lected by pressing the “RADIO” or “MEDIA” button.
Press the “MODE” switch when the audio system is turned on. The audio source
changes each time the “MODE” switch is pressed. ■
Rearranging the list
The listing order of the sour ce list can be rearranged.
Move the controller to the left while on the “Source” screen.
Select “Audio Source Select”.
Select an item you wish to move and th en select where to move the item to.Selecting the audio source Switching between audio sources, such as the radio and CD, is explained in
this section.
Changing audio source
Using the steering wheel switches to change audio sources 1
2
1
2
3

461
5
Lexus Display Audio system
RX450h_RX450hL _U_OM48F85U 5-9. Bluetooth ®
Phone
Before making a phone call, check the connection status, battery charge, call
area and signal strength. ( →
P. 462)
If a Bluetooth ®
device cannot be connected, chec k the connection status. If the
device is not connected, either register or reconnect it. ( →
P. 451, 454)
To display the screen shown below, press the off-hook switch on the steering
wheel or select “Phone” on the “Menu” screen.
Phone name
Bluetooth ®
connection status
( → P. 462)
Displays the call history screen
( → P. 465)
Displays the favorites screen
( → P. 465)
Displays the contacts screen
( → P. 463)
Displays the dial pad screen ( → P. 463)
Displays the message inbox screen ( → P. 469)Using a Bluetooth ®
PhoneThe hands-free system is a function that allows you to use your cellular phone
without touching it.
This system supports Bluetooth ®
. Bluetooth ®
is a wireless data system that
allows the cellular phone to wirelessly connect to the hands-free system and
make/receive calls.
Phone top screen 1
2
3
4
5
6
7

4635-9. Bluetooth ®
Phone
5
Lexus Display Audio system
RX450h_RX450hL _U_OM48F85UGo to “Dial Pad”: “MENU” button → “Phone” → “Dial Pad”
Input a phone number. ( → P. 404)
Press the off-hook switch on the steering wheel or select .
You can dial a number from the phoneb ook data imported from your cellular
phone. The system has one phonebook fo r each registered phone. Up to 2500
contacts may be stored in each phonebook. ( → P. 464)
Go to “Contacts”: “MENU” button → “Phone” → “Contacts”
Choose the desired contact to call from the list.
Choose the number and then press the off-hook switch on the steering wheel
or press the controller.Making a call Once a Bluetooth ®
phone is registered, you can make a call using the follow-
ing procedure:
Dialing
Dialing from the phonebook 1
2
3
1
2
3