Cadillac 2011 DTS Owner's Manual page 245

The audio system has RDS. The RDS feature is
available for use only on FM stations that broadcast
RDS information. This system relies upon receiving
specific information from these stations and only works
when the information is available. While the radio is
tuned to an FM-RDS station, the station name or call
letters display. In rare cases, a radio station can
broadcast incorrect information that causes the radio
features to work improperly. If this happens, contact the
radio station.
Press to turn the system on
and off.
Turn to increase or decrease the volume.
automatically adjusts the radio volume to compensate
for road and wind noise while driving. That way, the
volume level should sound about the same while
driving. To activate SCV:
1. Set the radio volume to the desired level.
2. Press the MENU button to display the radio
setup menu.
3. Press the pushbutton under the AUTO VOLUM
(automatic volume) tab on the radio display.
4. Press the pushbutton under the desired Speed
Compensated Volume setting (OFF, Low, Med,
or High) to select the level of radio volume
compensation. The display times out after
approximately 10 seconds. Each higher setting
allows for more radio volume compensation at
faster vehicle speeds.
Radios with SCV
4-87