in your glove compartment you willnd a small switch, if you click this 3 times it will reset your cas computer system, all you will then need to do is reset your radio and time.
if this does not work please take your car to any f our BMW dealers where they will be happy to fix your car.
Thank you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix cars.