When I turn on my 2008 bmw 328i coupe a light goes on for like 3 seconds then completely goes off after 3 seconds. Its a light bulb with exclamtion mark inside and little lines outside the bulb. what is this?

 

Your posting on a MINI forum about BMW?

 

You might want to find a BMW specific forum as this is MINI centered. Typically, all lights come on when you start a vehicle and then go away so make sure this isn't what you're seeing. Also, maybe check out this thread: http://www.e90post.com/forums/showthread.php?t=271778. Good luck!