My car has a Columbus unit and twice in recent months it has "woken up" having wiped the memorised DAB stations. It's easy enough to re-programme them, although one or two station logos aren't in the database and they have to be added manually. Does anyone have any ideas why this is happening?

I had this issue late last year but after updating the maps to latest one. I haven't had a problem since.

I get this problem from time to time, was wondering if it is associated with the rattle behind the radio, possible loose lead?