So my 2001 x5 has been giving me trouble, I have even replaced the battery with a new (aftermarket) one and still have the same problem.

It all started recently since I haven't been driving due to the location of my job. The car will sit for a week at a time and ends up dead. For a huge battery I can't see how 1 week will kill it. So, took it to the shop and after trial and error we feel that one of the modules is staying on after the car goes to sleep (16-20min after key is out of ignition and car is locked). The module we think is that little amber light next to the shifter that stays on constantly next to P. He did a test and the batter was still pulling something like .250 after we locked everything up and waited for the car to sleep, enough to drain the battery after a few days. I am confused and worried as to what to do next before the dealer comes into the equation.


Update: Problem Solved page 3 post #26