2000 BMW X5 Car Radio

Hi Guys,

When im driving my car my car radio will randomly stop transmitting sound. Once this happens, if i hit the power button for the radio off and then hit the power radio again as if i was turning it back on and the radio will transmit sound again. This happens every 10-15 mins.

Also the battery on the car slowly dies on its own within 3-5 days so i must charge the battery in order to use the car.

I have already checked all the fuses. I even took out the fuse for the radio so it never turns on and the battery still continued the drain..

I have replaced the battery to the car in the amplifier with no luck. Any ideas???

Thanks!