is there some sort of battery back up on the unit, that would maybe
hold vital things such as station presets, time....... when the power
from the battery is disconnected?
if there is such a feature on your radio, maybe it is siginaling that
the back-up battery is running low on charge and is in need of
replacing. i know that i have just such an option on my head-unit,
cause i hate to reprogram presets, and various other things that my
head unit can control, when i disconnect the main battery.
link to what i am talking about:
http://www.autosportcatalog.com/index.cfm?fa=p&pid=52