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Old 10-03-2010, 03:36 PM   #13
dmax
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Join Date: Aug 2006
Location: NJ
Posts: 23,564
My Ride: '99 328i 300K miles
Search cluster test...your car will tell you the voltage of car off and on...s/b approx 12.x V off and around 14 when on (plus or minus)...I'm at 13.7 V running, so I'll be needing an alt (or voltage regulator) someday...but I seem to be getting enough to keep the battery charged for now.

Anyway, cluster test, or multimeter (measure bat voltage off and on)...or autozone/etc.

...and find key...I love proximate causes, and the different key is certainly that...so don't go too crazy yet on replacing stuff...and you'll want a new key anyway, so go ahead and either search aggressively for it or order it and see what that does for you.
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