I am wondering if anyone else has ever had this problem, or annoyance, however you want to look at it. My 04 X3 has done this a few times in the last couple weeks. Either the doors wont unlock with the key fob or it will unlock just the drivers door but not the others. I originally thought it might be the fob, but a couple days ago it unlocked the drivers door, but no others, so I tried to unlock the others with the button on the dash and this wouldnt work either. After I started the engine, the doors would lock and unlock just like normal. Im not sure if this is an indication of a problem or not, but it can be kind of annoying. Any ideas?

Posted many times... door lock actuator. Common BMW problem.