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Old 04-27-2009, 05:41 AM
Seros Seros is offline
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Join Date: Nov 2008
Location: Melbourne
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Question Getting to bottom of Battery drain...

MY beloved X5 has been a real pain in the behind since i bought it 6 months ago. FYI, It's an 2002 4.4 X5.

SO far we've replaced a faulty FSU and a faulty radio u nit which was causing a current draw. The problem is I'm still having dead battery issues even with these parts replaced.

What makes this even more difficult is that every time I take the car to my auto electrician there is no abnormal current draw on the battery..... never.

So my problem is intermittent and can happen over a period of 8 hours (while I am at work).

Two thoughts... Sat Nav / TV? Or keyless entry? Those were the 2 things I used last night before it died again (for the 10th time). Also battery is supposed to be ok as is the alternator. My auto elec has been over it with a fine tooth comb.

And yes it does go into sleep mode, but maybe not all the time?

Any thoughts would be really helpful.

Thanks,

L.
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