Lexus 2012 RX450h Owner's Manual page 530

3-3. Using the Lexus Display Audio system
Setting the sound
Display the "Phone Settings" screen. (P. 529)
STEP 1
Select "Phone Sound Settings" on the "Phone Settings" screen.
STEP 2
STEP 3
When you complete settings, select "Save".
STEP 4
■ Setting the volume
Select "Call Volume" or "Ring Tone Volume" on the "Phone
STEP 1
Sound Settings" screen.
STEP 2
530
Changes the speaker volume
(P. 530)
Changes the ring tone volume
(P. 530)
Changes the ring tone
(P. 531)
Restore default settings
Select "-" or "+" to lower or raise
the volume, and then "OK".