Lexus GS430 User Manual page 250

TOUCH SCREEN
G18005a
You can use the microphone above when talking on the
phone.
The party's voice outputs from the driver's speaker. When the
received calls or received voice outputs, the audio from the
audio system or voice guidance from the Navigation system
will be muted.
226
INFORMATION
D Talk alternately with your party on the phone. If you
talk at the same time, the voice may not reach each
other. (It is not a malfunction.)
D Keep the volume of receiving voice down. Otherwise,
echo is coming up. When you talk on the phone,
speak clearly towards the microphone.
D In the following situations, your voice may not reach
the party.
z Driving on unpaved road. (Making a traffic noise.)
z Driving at the high speed.
z
The window is open.
z
Turning the air conditioning vents towards the
microphone.
z The sound of the air conditioning fan is loud.