This just happened to me. I can't believe it. Could it be a battery problem? Mine x5 is less than 3 years old. When I start it, the light flashes on and I hear a beep somewhere in the engine compartment. I don't hear any cranking. In fact, I don't think it's cranking at all.

The clock is blanked out. So, we lost the battery at some moment prior. After few attempt to start it, I can no longer lock the door with the key anymore. Does this make any sense?