hey guys. i have a 130 i BMW. The radio( BMW Professional) seems to have problems on different times of the day. In the mornings, the lighting and writing on the radio screen is normal, and then it fades away after a few minutes. it reappears again at night. does anyone perhaps know what might be wrong, and if so where i can get it fixed because i am based in Pretoria and none of the BMW shops in Pretoria could help. Thanks