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Old 04-23-2011, 04:12 AM   #1
alpine86
2nd Gear Member
 
Join Date: Jul 2009
Location: toronto
Posts: 167
Battery drain, and BMW CD player



Hey guys

here is another battery drain thread...

somehow my car dies once in every 2 months. Last time when my battery died I fully charged the battery with a battery charger and it was fine for about 2 months and yesterday no power at all..

I drive my car once in a week and it was fine for 2 months.

first I thought it was the final stage unit (FSU) drains the battery when the car is even locked. so I pulled the heater fuse out so my air blower stops working. Still, after 2 months battery died again. Maybe pulling heater fuse was not the solution for checking if HAVC system is mal-functing?

If it was not the right way of testing if FSU was at fault, please suggest me the right way of testing FSU.


My second guess is the BMW Business CD unit. When I just sit in the car (no car key was inserted) all the doors are closed then somehow I hear my cd player makes noise (sounds like pulling the cd out - no cd was inside) once in 10-20 minutes.. I currently have radio ver. of DICE unit and it worked fine for 3 years.

Does CD player makes rejecting CD noise once in a while??
If so I have to test it by pulling the CD puse for 2 months...
If CD unit is working itself when should I do? I really want to fine a solution for CD unit not making rejecting CD noise.
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