Radyo sorunu

This happened to me last year at the airport and also this year, changed battery the first time, have disconnected mines this time and I'm about to pull the fuses again, about 4 days after I got the battery changed the thing just started working again, but the dash light is staying on all night as something is not shutting down properly, I've read in forums it's the Bluetooth module (behind glove box) that is causing the problem, do you have an issue with battery drain too?