Lexus GS 450h 2008 Owner's Manual page 334

3-4. Using the hands-free system (for cellular phone)
Setting the volume
Press
STEP 1
Touch
STEP 2
Touch
STEP 3
Touch
STEP 4
STEP 5
Adaptive volume control
■
When traveling at 50 mph (80 km/h) or over, the system automatically raises the
volume one level.
If the vehicle' s speed drops to 43 mph (70 km/h), the volume will return to its origi-
nal level.
You can turn this function on/off by touching
To return to the default volume settings
■
Touch , then
332
.
on the "Information" screen.
on the "Telephone" screen.
on the "Settings" screen.
.
Touch or
the volume.
Voice Volume: Change
speaker volume
Ring Volume: Change the ring vol-
ume
.
to lower or raise
the