2010 Lexus GS450h steering

209
2-4. Using other driving systems
2
When driving
GS_HV_U (OM30C81U)
October 13, 2015 12:41 pm
NOTICE
■When using the intuitive parking assist
In the following situations, the system may not function correctly due to a sensor
malfunction etc. Have the vehicle checked by your Lexus dealer.
●A beep does not sound when you turn the main switch on.
●The intuitive parking assist operation display flashes, and a beep sound when no
obstacle has been detected.
●If the area around a sensor collides with something, or is subjected to strong
impact.
●If the bumper collides with something.
●If the display shows continuously without a beep.
■When changing tires
If you install tires of a size other than that recommended by the manufacturer, the
system will be unable to correctly detect steering wheel movement. Always use tire
sizes recommended by the manufacturer.
■When washing the vehicle
When washing the vehicle using high pressure cleaning equipment, do not spray
water directly on the sensors. Subjecting the sensors to high pressure impact may
cause a malfunction.

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2-4. Using other driving systems
GS_HV_U (OM30C81U)
October 13, 2015 12:41 pm
Driving assist systems
To help enhance driving safety and 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.
■ABS (Anti-lock Brake System)
Helps to prevent wheel lock when the brakes are applied suddenly, or if
the brakes are applied while driving on a slippery road surface.
■Brake assist
Generates an increased level of braking force after the brake pedal is
depressed, when the system detects a panic stop situation.
■Enhanced VSC (Enhanced Vehicle Stability Control)
Helps the driver to control skidding when swerving suddenly or turning on
slippery road surfaces.
■TRAC (Traction Control)
Helps to maintain drive power and prevent the rear wheels from spinning
when starting the vehicle or accelerating on slippery roads.
■Hill-start assist control
Helps prevent the vehicle from rolling backwards when starting on an
incline or slippery slope. It operates for approximately 5 seconds at maxi-
mum.
■EPS (Electric Power Steering)
Employs an electric motor to reduce the amount of effort needed to turn
the steering wheel.
■Active stabilizer suspension system (if equipped)
Reduces sway when cornering according to steering wheel movement
and the selected suspension damping mode, in order to maintain a stable
vehicle posture.
■PCS (Pre-Collision System) (if equipped)
P. 221

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2-4. Using other driving systems
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When driving
GS_HV_U (OM30C81U)
October 13, 2015 12:41 pm
When the Enhanced VSC/TRAC/hill-start assist control systems are
operating
If the vehicle is in danger of slip-
ping, rolling backwards when
starting on an incline, or if the rear
wheels spin, the slip indicator light
flashes to indicate that the
Enhanced VSC/TRAC/hill-start
assist control systems have been
engaged.
A buzzer (intermittent) sounds to
indicate that Enhanced VSC is
operating.
The stop lights and high mounted
stoplight turn on when the hill-start
assist control system is operating.
The slip indicator light flashes as
well when ABS is operating.
■VGRS (Variable Gear Ratio Steering)
Adjusts the wheel turning angle in accordance with the vehicle speed and
steering wheel movement.
■VDIM (Vehicle Dynamics Integrated Management)
Provides integrated control of the ABS, Enhanced VSC, TRAC, hill-start
assist control, VGRS and EPS systems.
Helps to maintain vehicle stability when swerving on slippery road sur-
faces by controlling the brakes, hybrid output, and the movement of the
front wheels.

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2-4. Using other driving systems
GS_HV_U (OM30C81U)
October 13, 2015 12:41 pm
■Automatic reactivation of TRAC and Enhanced VSC
Turning the “POWER” switch OFF after turning off the TRAC and Enhanced VSC
systems will automatically re-enable them.
■Automatic TRAC reactivation
If only the TRAC system is turned off, the TRAC system will turn on when the vehi-
cle speed increases.
■Automatic TRAC and Enhanced VSC reactivation
If the TRAC and Enhanced VSC systems are turned off, the systems will not turn on
even when the vehicle speed increases.
■Sounds and vibrations caused by the ABS, brake assist, Enhanced VSC, TRAC,
hill-start assist control and VGRS systems
●A sound may be heard from the engine compartment 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 operat-
ing. 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.
■Hill-start assist control operating conditions
This system comes into operation under the following conditions after the brake
pedal has been depressed and the vehicle has come to a stop:
●The shift lever is in the “D” or “S”.
●The system has detected that the vehicle is moving backwards.
■EPS operation sound
When the steering wheel operates, a motor sound (whirring sound) may be heard.
This does not indicate a malfunction.

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2-4. Using other driving systems
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When driving
GS_HV_U (OM30C81U)
October 13, 2015 12:41 pm
■Reduced effectiveness of EPS
The effectiveness of EPS 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 system should return to normal
about 10 minutes.
■VGRS is disabled in the following situations
●During stopping or the steering wheel has been moved for a long time while
driving at lower speeds.
●After the hybrid system is restarted at less than -22°F (-30°C).
CAUTION
Any of the following conditions may result in an accident which could cause death or
serious injury:
■The ABS does not operate effectively when
●The limits of tire gripping performance have been exceeded.
●The vehicle hydroplanes while driving at high speed on a wet or slick road.
■Stopping distance when the ABS is operating will exceed that of normal condi-
tions
The ABS is not designed to shorten the vehicle’s stopping distance. Always main-
tain a safe distance from the vehicle in front of you 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 roads with uneven roads
■TRAC may not operate effectively when
Directional control and power may not be achievable while driving on slippery road
surfaces, even if the TRAC is operating. 
Do not drive the vehicle in conditions where stability and power may be lost.

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2-5. Driving information
2
When driving
GS_HV_U (OM30C81U)
January 28, 2010 10:42 am
CAUTION
■Things that must not be carried in the trunk
The following things may cause a fire if loaded in the trunk.
●Receptacles containing gasoline
●Aerosol cans
■Storage precautions
Observe the following precautions.
Failing to do so may result in death or serious injury.
●Do not place cargo or luggage in or on the following locations as the item may
get under the brake or accelerator pedal and prevent the pedals from being
depressed properly, block the driver’s vision, or hit the driver or passengers,
causing an accident.
•Driver’s feet
• Front passenger or rear seats (when stacking items)
• Package tray
•Instrument panel
•Dashboard
●Secure all items in the occupant compartment, as they may shift and injure some-
one during sudden braking, sudden swerving or an accident.
■Weight of the load
●Improper loading may cause deterioration of steering or braking control result-
ing in an accident which may cause death or serious injury.
●Do not exceed the maximum axle weight rating or the total vehicle weight rating.
●Even if the total load of occupant’s weight and the cargo load is less than the total
load capacity, do not apply the load unevenly. Improper loading may cause dete-
rioration of steering or braking control which may cause death or serious injury.

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2-5. Driving information
GS_HV_U (OM30C81U)
January 28, 2010 10:42 am
Vehicle load limits
■Total load capacity and seating capacity
These details are also described on the tire and loading information label. 
(P. 485)
CAUTION
■Overloading the vehicle
Do not overload the vehicle.
It may not only cause damage to the tires, but also degrade steering and braking
ability, resulting in an accident.
Vehicle load limits include total load capacity, seating capacity, towing
capacity and cargo capacity.
■Total load capacity: 815 lb. (370 kg)
Total load capacity means the combined weight of occupants, cargo
and luggage.
■Seating capacity: 5 occupants (Front 2, Rear 3)
Seating capacity means the maximum number of occupants whose
estimated average weight is 150 lb. (68 kg) per person.
Even if the number of occupants are within the seating capacity, do
not exceed the total load capacity.
■Towing capacity
Lexus does not recommend towing a trailer with your vehicle.
■Cargo capacity
Cargo capacity may increase or decrease depending on the weight
and the number of occupants.

Interior features3
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GS_HV_U (OM30C81U)
February 1, 2010 11:04 am
3-3. Using the audio system
Audio system type.................. 270
Using the radio........................ 273
Using the CD/DVD 
player ..................................... 282
Playing an audio CD ............ 285
Playing MP3 and 
WMA discs........................... 289
Playing DVD video/audio 
(with DVD player) ............... 293
Playing a video CD 
(with DVD player) ............... 307
CD/DVD player and DVD 
video disc information ........ 310
Listening to Bluetooth
® 
audio......................................... 321
Listening to a USB memory/
iPod
®...................................... 329
Optimal use of the audio/
video system ......................... 339
Using the AUX port ............... 341
Using the steering 
switches .................................. 3423-4. Using the hands-free system 
(for cellular phone)
Hands-free system 
(for cellular phone) ............. 345
Using a Bluetooth
® 
phone ....................................... 351
Setting the hands-free system 
(for cellular phone) ............. 366
3-5. Using the interior lights
Interior lights list .................... 395
3-6. Using the storage features
List of storage features......... 398
3-7. Other interior features
Sun visors ................................. 406
Vanity mirrors ......................... 407
Clock ......................................... 408
Outside temperature 
display..................................... 409
Ashtrays..................................... 410
Cigarette lighter ...................... 411
Power outlet ............................. 412
Seat heaters/ventilators ....... 413
Armrest ..................................... 415
Rear sunshade ......................... 416
Floor mats ................................. 419
Trunk features .......................... 421
Garage door opener ............ 423
Compass .................................. 429
Safety Connect ...................... 433