2015 Lexus GS350 wheel

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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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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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4-5. 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. 250) 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 possib ility of a collision increases further,
pre-collision alert braking will operate.

GS350_OM_OM30E15U_(U)
2854-6. 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

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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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Interior features5
5-1. Remote Touch screen Remote Touch/12.3-inch display .......................................... 292
5-2. Using the air conditioning system and defogger
Front automatic air conditio ning system .......... 301
Rear air conditioning system ........................................... 321
Rear window and outside rear view mirror defoggers........... 326
Windshield wiper de-icer ....... 327
5-3. Using the interior lights Interior lights list..........................329• Interior light ........................... 330
• Personal lights....................... 330 5-4. Using the storage features
List of storage features ............ 332• Glove box ............................... 334
• Console box........................... 335
• Cup holders ........................... 336
• Auxiliary boxes .....................338
Trunk features .............................. 339
5-5. Other interior features Sun visors and vanity mirrors ................... 342
Clock...............................................343
Ashtrays ......................................... 344
Power outlets ............................... 345
Heated steering wheel ............ 347
Seat heaters/ seat ventilators ......................... 349
Armrest .......................................... 353
Rear sunshade/ rear door sunshades .............. 354
Trunk storage extension .......... 357
Coat hooks ...................................358
Assist grips.................................... 359
Utility hook....................................360
Garage door opener..................361
LEXUS Enform Safety Connect ......................................368

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GS350_OM_OM30E15U_(U)5-5. Other interior features
5
Interior features
Heated steering wheel
Turns the heater on/off
The indicator light comes on when the
heater is operating.
■Operating condition
The engine switch is in IGNITION ON mode.
■Timer
The heated steering wheel will automatically turn off after about 30 minutes.
: If equipped
The heated steering wheel heats the side grips of the steering wheel.

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5-5. Other interior features
CAUTION
■Burns
Care should be taken to prevent injury if anyone in the following categories comes
in contact with the steering wheel when the heated steering wheel is on:
●Babies, small children, the elderly, the sick and the physically challenged
●Persons with sensitive skin
●Persons who are fatigued
●Persons who have taken alcohol or drugs that induce sleep (sleeping drugs, cold
remedies, etc.)
NOTICE
■To prevent the battery from being discharged
Turn the switch off when the engine is not running.