wheel Lexus ES350 2015 Workshop Manual

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4-5. Using the driving support systems
4
Driving
Driving assist systems
◆ABS (Anti-lock Brake System)
Helps to prevent wheel lock when the brakes are applied suddenly, or if
the brakes are applied while dri ving on a slippery road surface
◆Brake assist
Generates an increased level of br aking force after the brake pedal is
depressed when the system detects a panic stop situation
◆VSC (Vehicle Stability Control)
Helps the driver to control skidding when swerving suddenly or turning
on slippery road surfaces
◆Enhanced VSC (Enhanced Vehicle Stability Control)
Provides cooperative control of the ABS, TRAC, VSC and EPS.
Helps to maintain directional stability when swerving on slippery road
surfaces by controllin g steering performance.
◆TRAC (Traction Control)
Helps to maintain drive power and prevent the drive wheels from spin-
ning when starting the vehicle or accelerating on slippery roads
◆Hill-start assist control (hybrid vehicles)
P. 319
To help enhance driving safety an d performance, the following systems
operate automatically in response to various driving situations. Be
aware, however, that these systems are supplementary and should not
be relied upon too heavily when operating the vehicle.

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4-5. Using the driving support systems
◆EPS (Electric Power Steering)
Employs an electric motor to reduce the amount of effort needed to
turn the steering wheel
◆PCS (Pre-Collision System) (if equipped)
 P. 321
Gasoline vehicles
The slip indicator light will flash
while the TRAC/VSC systems are
operating.
Hybrid vehicles
The slip indicator light will flash
while the TRAC/VSC/ABS sys-
tems are operating.
When the TRAC/VSC/ABS (hybrid vehicles) systems are operat-
ing

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3154-5. Using the driving support systems
4
Driving
If the vehicle gets stuck in mud, dirt or snow, the TRAC system may
reduce power from the engine to the wheels. Pressing
to turn the system off may make it easier for you to rock the vehi-
cle in order to free it.
To turn the TRAC system off, quickly
press and release .
The “TRAC OFF” will be shown on the
multi-information display. Press
again to turn the system back
on.
■Turning off both TRAC and VSC systems
To turn the TRAC and VSC systems off, press and hold for more than 3 sec-
onds while the vehicle is stopped.
The VSC OFF indicator light will come on and the “TRAC OFF” will be shown on the
multi-information display.
Press again to turn the systems back on.
Disabling the TRAC system

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4-5. Using the driving support systems
■When the message is displayed on the multi-information display showing that
TRAC has been disabled even if the VSC OFF switch has not been pressed
TRAC and hill-start assist control (hybri d vehicles) cannot be operated. Contact
your Lexus dealer.
■When the 12-volt battery is disconnected
The steering wheel may move from its straight forward position, but this will be cor-
rected automatically when driving.
■Sounds and vibrations caused by the ABS, brake assist, VSC and TRAC systems
●A sound may be heard from the engine compartment when the brake pedal is
depressed repeatedly, when the engine is started or just after the
vehicle begins to move. This sound does not indicate that a malfunction has
occurred in any of these systems.
●Any of the following conditions may occur when the above systems are operating.
None of these indicates that a malfunction has occurred.
• Vibrations may be felt through the vehicle body and steering.
• A motor sound may be heard after the vehicle comes to a stop.
• The brake pedal may pulsate slightly after the ABS is activated (gasoline vehi- cles).
• The brake pedal may move down slightly after the ABS is activated (gasoline
vehicles).
■EPS operation sound
When the steering wheel is operated, a motor sound (whirring sound) may be heard.
This does not indicate a malfunction.
■Automatic reactivation of TRAC and VSC systems
After turing the TRAC and VSC systems off, the systems will be automatically re-
enabled in the following situations:
●When the “START STOP ENGINE” <“POWER”> switch is turned off
●If only the TRAC system is turned off, the TRAC will turn on when vehicle speed
increases.
If both the TRAC and VSC systems are turned off, automatic re-enabling will not
occur when vehicle speed increases.

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3174-5. Using the driving support systems
4
Driving
■Reduced effectiveness of the EPS system
The effectiveness of the EPS system is reduced to prevent the system from overheat-
ing when there is frequent steering input over an extended period of time. The steer-
ing wheel may feel heavy as a result. Should this occur, refrain from excessive
steering input or stop the vehicle and turn the engine off. The effec-
tiveness will improve after a short while.
CAUTION
■The ABS does not operate effectively when
●The limits of tire gripping performance have been exceeded (such as excessively
worn tires on a snow covered road).
●The vehicle hydroplanes while driving at high speed on wet or slick roads.
■Stopping distance when the ABS is operating may exceed that of normal condi-
tions
The ABS is not designed to shorten the ve hicle’s stopping distance. Always main-
tain a safe distance from the vehicle in front of you, especially in the following situa-
tions:
●When driving on dirt, gravel or snow-covered roads
●When driving with tire chains
●When driving over bumps in the road
●When driving over roads with potholes or uneven surfaces
■TRAC may not operate effectively when
Directional control and power may not be achievable while driving on slippery
road surfaces, even if the TRAC system is operating.
Drive the vehicle carefully in conditions where stability and power may be lost.
■When the VSC is activated
The slip indicator light flashes. Always drive carefully. Reckless driving may cause
an accident. Exercise particular care when the indicator light flashes.
■When the TRAC/VSC systems are turned off
Be especially careful and drive at a spee d appropriate to the road conditions. As
these are the systems help ensure vehicle st ability and driving force, do not turn the
TRAC/VSC systems off unless necessary.

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4-5. Using the driving support systems
CAUTION
■Replacing tires
Make sure that all tires are of the specified size, brand, tread pattern and total load
capacity. In addition, make sure that the tires are inflated to the recommended tire
inflation pressure level.
The ABS, TRAC and VSC systems will not function correctly if different tires are
installed on the vehicle.
Contact your Lexus dealer for further information when replacing tires or wheels.
■Handling of tires and the suspension
Using tires with any kind of problem or modifying the suspension will affect the
driving assist systems, and may cause a system to malfunction.

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4-6. Driving tips
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 melt the ice. Wipe away the
water immediately to prevent it from freezing.
●To ensure proper operation of the climate control system fan, remove
any snow that has accumulated on the air inlet vents in front of the wind-
shield.
●Check for and remove any excess ice or snow that may have accumu-
lated on the exterior lights, vehicle’s roof, chassis, around the tires or on
the brakes.
●Remove any snow or mud from the bo ttom of your shoes before getting
in the vehicle.
Accelerate the vehicle slowly, keep a safe distance between you and the
vehicle ahead, and drive at a reduced speed suitable to road conditions.
Park the vehicle and move the shift lever to P without setting the parking
brake. The parking brake may freeze up, preventing it from being
released. If necessary, block the wheels to prevent inadvertent sliding or
creeping.
Before driving the vehicle
When driving the vehicle
When parking the vehicle

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3454-6. Driving tips
4
Driving
CAUTION
■Driving with snow tires
Observe the following precautions to reduce the risk of accidents.
Failure to do so may result in a loss of vehicle 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 opera-
tions that cause sudden engine braking.
●Slow down sufficiently before entering a curve to ensure that vehicle control is
maintained.
●Do not use LDA (Lane Departure Alert) system.

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5-1. Basic OperationsLexus Display Audio System .........................................350
Steering wheel audio switches....................................... 357
USB/AUX ports ......................... 359
5-2. Setup Setup menu ....................................361
General settings ......................... 362
Voice settings .............................. 366
Display settings ........................... 367
5-3. Using the audio system Selecting the audio source .......................................... 369
Optimal use of the audio system .......................................... 370
Audio settings...............................372
Audio menu screen operation .................................... 375
Lexus Display Audio
system
5

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Lexus Display Audiosystem
5
5-4. Using the radio
Radio operation .......................... 378
5-5. Playing an audio CD and MP3/WMA/AAC discs
CD player operation.................387
5-6. Using an external device Listening to an iPod ...................395
Using USB memory device ...........................................399
Using the AUX port................. 404
5-7. Connecting Bluetooth
®
Steps for using Bluetooth®
devices ........................................ 405
Registering a Bluetooth
®
device .......................................... 408
Selecting a Bluetooth
®
device ............................................ 410
Connecting a Bluetooth
®
audio player ..................................411
Connecting a Bluetooth
®
phone ............................................ 412
Displaying a Bluetooth
®
device details ............................. 414
Detailed Bluetooth
®
settings.......................................... 415 5-8. Bluetooth
® Audio
Listening to Bluetooth
®
Audio ............................................. 417
5-9. Bluetooth
® Phone
Using a Bluetooth
®
Phone ............................................ 419
Making a call ..................................421
Receiving a call ........................... 424
Speaking on the phone............ 425
Using a Bluetooth
®
phone message........................ 428
Using the steering wheel switches........................................ 431
Bluetooth
® phone
settings ........................................ 432
5-10. Phonebook Contact settings ......................... 434
Messaging setting......................438
5-11. Bluetooth
®
What to do if... (Troubleshooting).................... 439
Bluetooth
®................................... 443
5-12. Other function “Information” screen ................. 449
USB photo ......................................451
Weather information ................ 453
Voice command system .......... 455
Mobile Assistant......................... 459
LEXUS Enform Remote ...........461