2014 Lexus GS350 wheel

GS350_OM_OM30D41U_(U)
2734-5. Using the driving support systems
4
Driving
■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 cannot be operated. Contact your Lexus dealer.
■VGRS is disabled when
VGRS may stop operating in the following situations.
In this event, the steering wheel may move from its straight forward position, but it
will return when the system restarts.
●The steering wheel is operated for an extended period of time while the vehicle is
stopped or is moving very slowly.
●When force is continuously applied for a long time with the steering wheel turned
as far as it will go.
The center position of the steering wheel may change when VGRS is disabled. How-
ever, the position will return to normal after VGRS is reactivated.
■When the 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, TRAC and VGRS sys-
tems
●A sound may be heard from the engine compartment when the engine is started or
just after the vehicle begins to move. This sound does not indicate that a malfunc-
tion 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.
• The brake pedal may move down slightly after the ABS is activated.
■EPS, VGRS and DRS operation sound
When the steering wheel is operated, a motor sound (whirring sound) may be heard.
This does not indicate a malfunction.
■Reactivation of the TRAC/VSC systems
Even after the TRAC/VSC systems have been turned off, turning the engine off and
then on again will automatically reactivate the TRAC/VSC systems.

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GS350_OM_OM30D41U_(U)
4-5. Using the driving support systems
■Reactivation of the TRAC system linked to vehicle speed
When only the TRAC system is turned off, the TRAC system will turn on when vehi-
cle speed increases. However, when both TRAC/VSC systems are turned off, the
systems will not turn on even when vehicle speed increases.
■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 ov er 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 tu rn the engine off. The EPS system should
return to normal within 10 minutes.
*: If the LKA (Lane-Keeping Assist) system cannot operate in this case, a warning
message will be shown on the multi-information display.

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GS350_OM_OM30D41U_(U)
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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GS350_OM_OM30D41U_(U)
4-5. Using the driving support systems
◆Suspension control (if equipped)
When the system determines that there is a high possibility of a frontal
collision, the operation of AVS ( P. 270) optimally controls the damp-
ing force of the shock absorber.
◆Steering control (if equipped)
Vehicles with VGRS
There is a high possibility of collisi on and if the steering wheel is oper-
ated, the steering gear ratio is chan ged by VGRS to help improve the
response to steering input.
Vehicles with LDH
There is a high possibility of collisi on and if the steering wheel is oper-
ated, the steering angles of the fr ont and rear wheels and the heaviness
of the steering wheel are controlled by LDH, thus heightening respon-
siveness in response to the steering operation.
◆Driver monitor system (if equipped)
When the system determines that there is a possibility of a collision, and
either the driver is not facing forwar d or the driver’s eyes are closed,
PCS warnings are given in advance to warn the driver. If the system
determines that the conditions to operate pre-collision alert braking
have been met even when the possibility of a collision increases further,
pre-collision alert braking will operate.

GS350_OM_OM30D41U_(U)
3054-6. Driving tips
4
Driving
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

308
GS350_OM_OM30D41U_(U)
4-6. Driving tips
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.
●Do not use LKA (Lane-Keeping Assist) system.
■Driving with tire chains (vehicles with front and rear tires of the same size except
for the vehicles with LDH and 19 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 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 LKA (Lane-Keeping Assist) system.

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GS350_OM_OM30D41U_(U)
Interior features5
5-3. Using the audio system Audio system type ......................376
Using the radio ............................399
Using the CD/DVD player ..... 421
Playing an audio CD and MP3/WMA discs.......... 423
Playing DVD video .................... 429
CD/DVD player and DVD video disc information ............ 441
Listening to Bluetooth
® audio.................... 452
Listening to a USB memory.........................463
Listening to an iPod ................... 473
Optimal use of the audio/video system ........ 483
Using the AUX port................. 485
Using the rear seat audio controls ........................... 487
Using the steering wheel audio switches .......................... 492
5-4. Using the hands-free phone system (for cellular phone)
Hands-free system (for cellular phone) ................. 495
Using a Bluetooth
® phone ... 503
Setting the hands-free system (for cellular phone) ................. 524
Setting the Bluetooth
®........... 548 5-5. Using the interior lights
Interior lights list ...........................561• Interior light ............................ 562
• Personal lights ....................... 562
5-6. Using the storage features List of storage features ............ 564• Glove box ............................... 566
• Console box........................... 567
• Cup holders ...........................568
• Auxiliary boxes ..................... 570
Trunk features ................................571
5-7. Other interior features Sun visors and vanity mirrors .................... 574
Clock............................................... 575
Ashtrays .......................................... 576
Power outlets ................................577
Heated steering wheel ............ 579
Seat heaters/ seat ventilators .......................... 581
Armrest ......................................... 585
Rear sunshade/ rear door sunshades ..............586
Trunk storage extension ..........589
Coat hooks ...................................590
Assist grips..................................... 591
Utility hook.................................... 592
Garage door opener................ 593
Safety Connect .......................... 600

351
GS350_OM_OM30D41U_(U)5-1. Remote Touch screen
5
Interior features
Mobile Assistant
Press and hold the off hook
switch until you hear the beeps
that indicate the system is lis-
tening.
The Mobile Assistant can be
used only when the neighbor-
ing screen is displayed.
To cancel the Mobile Assistant,
select “Cancel”, or press and hold
the off hook switch.
To restart the Mobile Assistant for
additional commands, press the off
hook switch. Mobile Assistant can
only be restarted after the system
responds to a voice command.
After some phone and music com-
mands, the Mobile Assistant fea-
ture will automatically end to
complete the requested action.
The Mobile Assistant feature on this system allows the activation of
Apple’s Siri
® Eyes Free mode via the steering wheel switches. To oper-
ate the Mobile Assistant, a compa tible cellular phone must be regis-
tered and connected to this system via Bluetooth
®. (  P. 504)
For details of the navigation system, refer to the “Navigation System
Owner’s Manual”.
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