I was trying to change rotors and pads on my X5 when i ran into a little snag with the rotor bracket bolts and couldnt continue. Also i was running out of daylight so i decided to put everything back together and attempt the job another day. I went to start the car and all i heard was a lot of clicking and the HID's were flashing on and off. Has anyone encountered this or does this happen when the battery dies? Though nothing was left on in the car to cause the battery to die. This is my first BMW so im not certain what this means or what has happened. Its an '01 4.4.