Subaru 2006 Baja Owner's Manual page 199

Audio
button is pressed for less than 1.5 seconds, the pre-
ceding selection will remain in memory.
NOTE
If the connection between the radio and battery
is broken for any reason such as vehicle mainte-
nance or radio removal, all stations stored in the
preset buttons are cleared. If this occurs, it is nec-
essary to reset the preset buttons.
If a cell phone is placed near the radio, it may
cause the radio to emit noise when it receives
calls. This noise does not indicate a radio fault.
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