steering wheel Lexus GS450h 2010 Using The Audio System / LEXUS 2010 GS450H (OM30C81U) Service Manual

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2-4. Using other driving systems
2
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.

344
3-3. Using the audio system
GS_HV_U (OM30C81U)
January 28, 2010 1:22 pm
Selecting a disc in the CD or DVD player
Press to select the CD or DVD mode.
Press and hold  or  on until you hear a beep.
Selecting an album
Press to select Bluetooth
® audio mode.
Press and hold  or  on until you hear a beep.
Selecting a folder
Press to select CD (only when MP3/WMA disc is in use) or
USB memory mode.
Press and hold  or  on until you hear a beep.
■Canceling automatic seek station
Push the same switch.
CAUTION
■To reduce the risk of an accident
Exercise care when operating the audio switches on the steering wheel.
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356
3-4. Using the hands-free system (for cellular phone)
GS_HV_U (OM30C81U)
January 28, 2010 10:42 am
Making a call
Once the Bluetooth
® phone is registered, you can make a call using the
following procedure:
■Dialing
Display the “Phone” screen. (P. 3 5 1 )
Input the phone number.
To delete the inputted phone num-
ber, touch .
To dial the last inputted phone
number, touch “Redial”.
Touch or press on the steering wheel.
STEP1
STEP2
STEP3

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3-4. Using the hands-free system (for cellular phone)
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Interior features
GS_HV_U (OM30C81U)
January 28, 2010 10:42 am
■Dialing from the phonebook
With navigation system
You can dial a number from the phonebook data imported from your
mobile phone. The system has one phonebook for each telephone. Up
to 1000 entries may be stored in each phonebook. (P. 373)
Without navigation system
You can dial a number from the phonebook data imported from your
mobile phone. The system has one phonebook for each telephone. Up
to 1000 entries may be stored in total for the phonebooks. (P. 373)
Display the “Phone” screen. (P. 3 5 1 )
Touch “Contacts” on the “Phone” screen.
Choose the desired data to call
from the list.
If the phonebook is empty, a mes-
sage will be displayed.
If you want to transfer new contacts
from a cellular phone, touch “Yes”.
Choose the number and then
touch or press on the
steering wheel.
STEP1
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3-4. Using the hands-free system (for cellular phone)
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Interior features
GS_HV_U (OM30C81U)
January 28, 2010 10:42 am
■Dialing from history
You can call using the call history which has the 4 functions below.
“All”: all the numbers below which were memorized
“Missed”: calls which you missed
“Incoming”: calls which you received
“Outgoing”: numbers which you called
You can call using the 5 most recently called numbers shown by “All”
while driving.
Display the “Phone” screen. (P. 3 5 1 )
Touch “Call History” on the “Phone” screen.
Select the desired tab and choose
the desired data from the list.
Touch or press on the
steering wheel.
STEP1
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STEP3
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3-4. Using the hands-free system (for cellular phone)
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Interior features
GS_HV_U (OM30C81U)
January 28, 2010 10:42 am
●Calling by name
You can call by giving a voice tag registered in the phonebook. 
(P. 387)
When you select “English” in “Language”, you can call by giving a name
registered in the phonebook.
Press the talk switch.
If you want to check the entire
command list, say “Command list”
to display the “Command List”
screen.
Following the system guidance, wait for the beep and then say
“Phone”.
Following the system guidance, wait for the beep and then say
“Dial by Name”.
Following the system guidance, wait for the beep and then say the
desired name.
Following the system guidance, wait for the beep and then say the
type of number such as “Mobile” or “Home”.
Following the system guidance, wait for the beep and then say
“Dial”. (You can also call by pushing on the steering wheel or
selecting “Dial”.)
■Calling using POI (With navigation system)
You can make a call using a Point Of Interest.
STEP1
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STEP4
STEP5
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3-4. Using the hands-free system (for cellular phone)
GS_HV_U (OM30C81U)
January 28, 2010 10:42 am
■Call history list
●If you make a call to or receive a call from a number registered in the phone
book, the name is displayed in the call history.
●If you make multiple calls to the same number, only the last call made is dis-
played in the call history.
●Calls where the number is unavailable, such as public telephones, are not stored
in the call history.
■When driving
The functions “Dialing”, “Dialing from the phonebook”, and “Dialing from history”
(except for call using the 5 most recently called numbers shown by “All” tab) are
unavailable.
■International calls
You may not be able to make international calls, depending on the mobile phone in
use.
■Calling by using the call history
Push on the steering wheel to display the “Phone” screen.
Push on the steering wheel to display the “Call History” screen.
Push on the steering wheel to select the most recent number in the
history.
Select or push on the steering wheel.
■To cancel voice recognition
●Press and hold the talk switch.
●Press on the steering wheel.
●Touch “Cancel”. (excluding command verification)
●Say “Cancel”.
■When using voice recognition
Use correct commands and speak clearly, otherwise the system may not correctly
recognize the command. Wind or other noises may also cause the system not to
recognize the desired command.
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3-4. Using the hands-free system (for cellular phone)
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Interior features
GS_HV_U (OM30C81U)
January 28, 2010 10:42 am
Receiving a call
When a call is received, the following screen is displayed together with a
sound.
Touch or press on the
steering wheel.
■To refuse a call
Touch or press on the steering wheel.
■To adjust the incoming call volume
Touch “-” or “+”. You can also adjust the volume using the steering
switches.
■International calls
Received international calls may not be displayed correctly depending on the
mobile phone in use.