This is the first time it ever happened to me on my 2002 X5 4.4. So I am not sure what's going on. We don't drive our car that much.
BUT I just replaced the battery little more than a month ago..Wasn't from the dealer. I got a Duralast Gold
http://www.autozone.com/selectedZip,.../selectZip.htm
All the lights are on, but the ignition just keep on having that "Klank, Klank" sound. And onething I notice is that no electrical equipment would move.
Normally when you turn the key to second starting position, all the electrical equipment is on and you can turn on and off the CD player and stuff. But this time, the light is on, but can't turn on or off, CD play is not playing and you can't change tune, can't move the seat, can't move the steering wheel, the fan is still on, but can't change how fast fan blow. Is it a battery problem or something else? I would probably call someone to come and give me a jump. But wanted to see if there are people that have similar situation.