I have a 2002 X5 , and my battery keeps dying and will not start in the morning, I had a new AAA battery put in and they also had to replace it with a new one within the last month, and it also shorted out my transmission control module which I had to replace, we could not figure out what kept draining it. The dealer just told me it was the Final stage blower that keeps draining the battery, they want $706.00 to replace .. Any suggestions ??