wheel Lexus IS300h 2017 Repair Manual

3534-5. Using the driving support systems
4
Driving
IS300h_EE(OM53D89E)
◆Adaptive Variable Suspension System (if equipped)
Controls the damping force of the shoc k absorber of each wheel according to
the road and driving conditions, helpin g achieve a comfortable ride, excellent
driveability and a high level of stability.
If SPORT S+ mode is selected using the driving mode select switch, the
damping force will become more suitable for sporty driving. (P. 349)
◆VDIM (Vehicle Dynamics Integrated Management)
Provides integrated control of the AB S, brake assist, TRC, VSC, hill-start
assist control, and EPS systems
Helps to maintain vehicle stability when swerving on slippery road surfaces by
controlling the brakes and hybrid system output
◆Emergency brake signal
When the brakes are applied suddenly, the stop lights automatically flash to
alert the vehicle behind.
The slip indicator light will flash while
the TRC/VSC/ABS systems are oper-
ating.
When the TRC/VSC/ABS systems are operating

3544-5. Using the driving support systems
IS300h_EE(OM53D89E)
If the vehicle gets stuck in mud, dirt or snow, the TRC system may reduce power
from the hybrid system to the wheels. Pressing to turn the system off may
make it easier for you to rock the vehicle in order to free it.
To turn the TRC system off, quickly
press and release .
The “Traction Control Turned Off” will
be shown on the multi-information dis-
play. Press again to turn the sys-
tem back on.
■Turning off both TRC and VSC systems
To turn the TRC and VSC systems off, pr ess and hold for more than 3 seconds
while the vehicle is stopped.
The VSC OFF indicator light will come on an d the “Traction Control Turned Off” will be
shown on the multi-information display.*
Press again to turn the system back on.
*: On vehicles with pre-collision system, pre-co llision brake assist and pre-collision brak-
ing will also be disabled. The pre-collision sy stem warning light will come on and the
message will be shown on the multi-information display. (P. 581)
■When the message is displayed on the multi-information display showing that TRC has
been disabled even if the VSC OFF switch has not been pressed
TRC cannot be operated. Contact any authorized Lexus retailer or Lexus authorized
repairer, or any reliable repairer.
Disabling the TRC system

3554-5. Using the driving support systems
4
Driving
IS300h_EE(OM53D89E)
■Operating conditions of hill-start assist control
When the following four conditions are met, the hill-start assist control will operate:
●The shift lever is in a position other than P or N (when starting off forward/backward on
an upward incline)
●The vehicle is stopped
●The accelerator pedal is not depressed
●The parking brake is not engaged
■Automatic system cancelation of hill-start assist control
The hill-start assist control will turn of f in any of the following situations:
●The shift lever is shifted to P or N
●The accelerator pedal is depressed
●The parking brake is engaged
●Approximately 2 seconds elapse after the brake pedal is released
■When the 12-volt battery is disconnected
The steering wheel may move fr om its straight forward position, but this will be corrected
automatically when driving.
■Sounds and vibrations caused by the ABS, brake assist, TRC, VSC and hill-start assist control systems
●A sound may be heard from the engine compartment when the brake pedal is
depressed repeatedly, when the hybrid system 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 also after the vehicle comes to a stop.
■ECB operating sound
ECB operating sound may be heard in the followi ng cases, but it does not indicate that a
malfunction has occurred.
●Operating sound heard from the engine compartment when the brake pedal is oper- ated.
●Motor sound of the brake system heard from the front part of the vehicle when the
driver’s door is opened.
●Operating sound heard from the engine compartment when one or two minutes
passed after the stop of the hybrid system.
■EPS operation sound
When the steering wheel is operated, a motor sound (whirring sound) may be heard.
This does not indicate a malfunction.

3564-5. Using the driving support systems
IS300h_EE(OM53D89E)
■Automatic reactivation of TRC and VSC systems
After turning the TRC and VSC systems off, the systems will be automatically re-enabled in the following situations:
●When the power switch is turned off
●If only the TRC system is tu rned off, the TRC will turn on when vehicle speed increases If both the TRC and VSC syst ems are turned off, automatic re-enabling will not occur
when vehicle speed increases.
■Reduced effectiveness of the EPS system
The effectiveness of the EPS system is reduced to prevent the system from overheating
when there is frequent steering input over an extended period of time. The steering
wheel may feel heavy as a result . Should this occur, refrain from excessive steering input or stop the vehicle and turn the hybrid system off. The EPS system should return to nor-
mal within 10 minutes.
■Operating conditions of emergency brake signal
When the following three conditions are me t, the emergency brake signal will operate:
●The emergency flashers are off
●Actual vehicle speed is over 55 km/h (35 mph)
●The brake pedal is depressed in a manner that cause the system to judge from the vehi-
cle deceleration that this is a sudden braking operation
■Automatic system cancelation of emergency brake signal
The emergency brake signal will turn of f in any of the following situations:
●The emergency flashers are turned on
●The brake pedal is released
●The system judges from the vehicle deceleration that is not a sudden braking operation

3574-5. Using the driving support systems
4
Driving
IS300h_EE(OM53D89E)
WARNING
■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 conditions
The ABS is not designed to sh orten the vehicle’s stopping distance. Always maintain a
safe distance from the vehicle in front of you, especially in the following situations:
●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
■TRC/VSC may not operate effectively when
Directional control and power may not be achievable while driving on slippery road surfaces, even if the TRC/VSC system is operating.
Drive the vehicle carefully in conditions where stability and power may be lost.
■Hill- start assist control does not operate effectively when
●Do not overly rely on hill-start assist control. Hill-start assist control may not operate
effectively on steep inclines and roads covered with ice.
●Unlike the parking brake, hill-start assist co ntrol is not intended to hold the vehicle stationary for an extended pe riod of time. Do not attempt to use hill-start assist con-
trol to hold the vehicle on an incline, as doing so may lead to an accident.
■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 TRC/VSC systems are turned off
Be especially careful and drive at a speed appropriate to the road conditions. As these
are the systems to help ensure vehicle stability and driving force, do not turn the TRC/
VSC systems off unless necessary.
■Replacing tires
Make sure that all tires are of the specif ied size, brand, tread pattern and total load
capacity. In addition, make sure that the tire s are inflated to the recommended tire infla- tion pressure level.
The ABS, TRC and VSC systems will not function correctly if different tires are installed
on the vehicle. Contact any authorized Lexus retailer or Le xus authorized repairer, or any reliable
repairer for further information when replacing tires or wheels.
■Handling of tires and the suspension
Using tires with any kind of problem or modi fying the suspension will affect the driving assist systems, and may cause a system to malfunction.

3624-6. Driving tips
IS300h_EE(OM53D89E)
●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
the vehicle is parked without setting the parking brake, make sure to block the
wheels.
Failure to do so may be dangerous because it may cause the vehicle to move
unexpectedly, possibly leading to an accident.
●If the vehicle is parked without setting the parking brake, confirm that the shift
lever cannot be moved out of P*.
*: The shift lever will be locked if it is atte mpted to be shifted from P to any other posi-
tion without depressing the brake pedal. If the shift lever can be shifted from P,
there may be a problem with the shift lock system. Have the vehicle inspected by
your authorized Lexus reta iler or Lexus authorized repairer, or any reliable
repairer immediately.
Except vehicles with 18-inch tires
Use the correct tire chain size when mounting the tire chains.
Chain size is regulated for each tire size.
Side chain
(3 mm [0.12 in.] in diameter)
Cross chain
(4 mm [0.16 in.] in diameter)
Vehicles with 18-inch tires
Tire chains cannot be mounted on the 18-inch tires.
Snow tires should be used instead.
When parking the vehicle
Selecting tire chains
1
2

3634-6. Driving tips
4
Driving
IS300h_EE(OM53D89E)
Regulations regarding the use of tire chains vary depending on location and type
of road. Always check local regulations before installing chains.
■Tire chain installation
Observe the following precautions wh en installing and removing chains:
●Install and remove tire chains in a safe location.
●Install tire chains on the rear tires. Do not install tire chains on the front tires.
●Install tire chains on rear tires as tightly as possible. Retighten chains after driving 0.5
 1.0 km (1/4  1/2 mile).
●Install tire chains following the instructions provided with the tire chains.
Regulations on the use of tire chains
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 at speeds in excess of the speed limit or the speed limit specified for the snow tires being used.
●Use snow tires on all, not just some wheels.
●Do not use LKA (Lane Keeping Assist) system.
■Driving with tire chains (excep t vehicles with 18-inch tires)
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 th e speed limit specified for the tire chains being used, or 50
km/h (30 mph), 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.

366
IS300h_EE(OM53D89E)
5-1. Basic Operations
Lexus Display Audio
system ..........................................368
Steering wheel audio
switches....................................... 374
USB/AUX ports ........................ 375
5-2. Setup
Setup menu .................................. 378
General settings......................... 379
Voice settings .............................. 382
Display settings ...........................383
5-3. Using the audio system
Selecting the audio
source ..........................................385
Optimal use of the audio
system ..........................................386
Audio settings ............................. 387
Audio menu screen
operation ..................................... 391
5-4. Using the radio
Radio operation.......................... 394
5-5. Playing an audio CD and
MP3/WMA/AAC discs
CD player operation ................ 396

367
5
Lexus Display
Audio system
IS300h_EE(OM53D89E)
5-6. Using an external device
Listening to an iPod ...................402
Using USB memory
device...........................................406
Using the AUX port .................... 411
5-7. Connecting Bluetooth®
Steps for usin g Bluetooth®
devices.......................................... 412
Registering a Bluetooth®
device............................................ 414
Selecting a Bluetooth®
device............................................ 415
Connecting a Bluetooth®
audio player ................................ 416
Connecting a Bluetooth®
phone .............................................417
Displaying a Bluetooth®
device details ............................. 418
Detailed Bluetooth®
settings.......................................... 419
5-8. Bluetooth® Audio
Listening to Bluetooth®
Audio............................................420
5-9. Bluetooth® Phone
Using a Bluetooth®
Phone.............................................421
Making a call................................ 423
Receiving a call ........................... 426
Speaking on the phone ........... 427
Using a Bluetooth® phone
messages.................................... 429
Using the steering wheel
switches....................................... 432
Bluetooth® phone
settings ........................................ 433
5-10. Phonebook
Contact settings ......................... 435
Messaging setting .....................438
5-11. Bluetooth®
What to do if...
(Troubleshooting)................... 439
Bluetooth®................................... 442
5-12. Other function
“Information” screen.................450
MirrorLink™ ................................. 451
USB photo .................................... 455
Speech command system ...... 457
Some of the functions cannot be operated while driving.

3745-1. Basic Operations
IS300h_EE(OM53D89E)
Volume switch
• Increases/decreases volume
• Press and hold: Continuously
increases/decreases volume
Radio mode:
• Press (except manual mode):
Select a radio station
• Press (manual mode): Seek up/
down
• Press and hold (manual mode): Continuously seek up/down
CD, MP3/WMA/AAC disc, Bluetooth®, iPod or USB mode:
• Press: Select a track/file/song/video
• Press and hold: Select a folder/a lbum (MP3/WMA/AAC disc or USB)
“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 the ty pe of audio system or 10.3-inch dis-
play. For details, refer to the manual pr ovided with the audio system or 10.3-
inch display.
Depending on the type of audio source , certain functions may not be avail-
able.
Operating the audio system using the steering wheel switches
1
2
WARNING
■To reduce the risk of an accident
Exercise care when operating the audio switches on the steering wheel.
3