Lexus RX450H Navigation System Owner's Manual page 192

2. SETUP
NEW MESSAGE
NOTIFICATION VOLUME
SETTINGS
The new message notification volume
can be adjusted.
1
Select "New Message Notification
Volume".
2
Select "-" or "+" to adjust the new mes-
sage notification volume.
3
Select "OK".
INFORMATION
●The system will automatically increase
the volume when the speed exceeds 50
mph (80 km/h).
192
RX450h/350_Navi_U
NEW MESSAGE
NOTIFICATION TONE
SETTINGS
A new message voice notification tone
can be selected.
1
Select "New Message Notification
Tone".
2
Select the desired new message notifi-
cation tone.
 New message notification tones can be
heard by selecting the screen buttons.
3
Select "OK".