I have a 99 323i 5 speed that was running fine...when i got in the car i noticed radio wasn't turning on so I decided to restart car and see if radio would then turn on but instead i turned car off and it wouldn't restart. I got it to push start everything inside turns on except radio only red anti theft light blinks..horn doesn't work and rear brake lights now stay on and its indicated on the on board display....Any suggestions on what it could be?