39Settings menusFunction button: effectALT-FREQb) ALTERNATIVE FREQUENCY: Define the setting for automatic sta-tion tracking.
ON: The unit always switches to the radio station's frequency thatoffers the best reception as the vehicle travels from one area to thenext. As a result, regional programmes may be interrupted.
OFF: No frequency change takes place. The unit remains tuned tothe selected frequency until reception is lost.RDS REG is no longer available in the SETUP menu.
RDS REGb)c) RDS REGIONAL: Define the setting for automatic station track-ing.
AUTO: The unit always switches to the radio station's frequency thatoffers the best reception as the vehicle travels from one area to thenext. As a result, regional programmes may be interrupted.
FIX: The unit only changes to regional alternative frequencies forthe current station broadcasting the same regional service. The radiowill accept the frequencies of other stations, only when the receptionquality is very poor.
RADIOTEXT: Some RDS-compatible and DAB stations broadcast additionaltext information. The individual radio station is responsible for the textsdisplayed.
ON: If the currently selected radio station supports radio text andthe reception is strong enough, radio text is displayed in the centreline of the screen (if necessary as scrolling text) instead of the stationname.
OFF: No radio text is displayed (factory setting).DAB... settings d) ⇒ page 40.AUX: AUX-IN multimedia socket enabled ON or disabled OFF⇒ page 28.AUX LVL: The input volume for some external audio sources (AUX, iPodor iPhone) can be adjusted to the output volume of the other audio sour-ces ⇒ page 39.
BT AUDIO: Bluetooth audio mode active ON or deactivated OFF⇒ page 28.Function button: effectON-VOL ALTERNATIVELY START-VOL: To regulate the maximum switch on vol-ume.GALA OR SCV: To set the speed-dependent volume adjustment⇒ page 39.DISPLAY: To set the brightness of the display when the dipped beam head-lights are switched on.PDC: PDC VOL ATTENU.: To reduce the volume of the current audio sourceto a preset level when the parking distance warning system is active.
a)
RDS is not available in all locations ⇒ page 15.
b)
Not displayed if RDS OFF is selected.
c)
Not displayed if ALT-FREQ OFF is selected.
d)
DAB radio mode is only available depending on the unit and currently only in part of Eu-rope ⇒ page 18.
Adjusting the output volume (AUX/MDI VOLUME LEVEL)
If you need to increase the output volume for the external audio source, firstlower the base volume on the radio system ⇒ page 9.
If the sound from the external audio source is too quiet, increase the outputvolume on the external audio source if possible. If this is not sufficient, setthe input volume (AUX VOL LEVEL) in the system settings to level 2 or level 3.
If the sound from the connected external audio source is too loud or distor-ted, lower the output volume on the external audio source if possible. If thisis not sufficient, set AUX VOL LEVEL to level 2 or level 1.
Speed-dependent volume adjustment
The GALA function automatically adjusts the volume in line with the speedof the vehicle.
You can set the degree to which the volume increases with speed on a scalebetween 1 and 7.
