Why doesn't the coil get spark?

No I didn't check the coil fuse but I will now that u said something about it, is there anything else I could check for? I already changed the coil, and crank position sensor

There is no "coil fuse" on this vehicle. It is internally fused in the DME (current controlled internal circuit breaker). You should take this very sophisticated, technologically advanced piece of engineering beauty to a trained BMW Specialist (a specialist is someone who only works on one make of vehicle). There are many qualified independent, as well as dealer choices out there. Remember, there is no such thing as a Euro Specialist, or a Japanese Specialist, or a Domestic Specialist, or even a German Auto Specialist - the term would be an oxymoron. A German Auto Specialist would have to be proficient in seven different makes - this is not possible anymore "Jack of all trades, master of none". You can look up an excellent BMW shop by going to the BIMRS web directory (non-profit) at bimrs.org