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7 Series - E65 / E66 (2002 - 2008)
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  #1  
Old 01-12-2014, 08:39 PM
martinjcloud martinjcloud is offline
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Location: Florida
 
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Mein Auto: BMW 745i
Won't Turn On/Start Issues

Hi all,

If this question has been answered before, please point me in the right direction.

My 745I 2002 has been sitting for 2days and when I use the key remote to unlock the door, it barely unlocks. As if something is low on power. Then when I put the key in the ignition, my radio and dash don't come on. Pretty much only the car light comes on. Some backgroud lights on the dash do light up but not the usual indicators. Lastly, the car won't crank at all.

First thing I check is the battery. Autozone says the battery is good. I've checked to make sure all the battery connections are solid and etc...

What should be my next step?
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  #2  
Old 01-13-2014, 12:15 AM
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SuperSnoop SuperSnoop is offline
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Location: Austin, Texas
 
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Mein Auto: 2007 760Li
Did autozone charge the battery for you? How old is the battery? Sometimes they test fine even when bad.


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  #3  
Old 01-13-2014, 12:17 AM
martinjcloud martinjcloud is offline
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Location: Florida
 
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Mein Auto: BMW 745i
No, it was a free test. The battery is about 2 yrs old.
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  #4  
Old 01-14-2014, 05:50 AM
martinjcloud martinjcloud is offline
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Any ideas anyone?
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  #5  
Old 01-14-2014, 07:57 AM
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MOPAULY MOPAULY is offline
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I don't think autozone is a solid source on this one. How old is the battery? Have you used INPA to verify voltage levels?
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Old 01-14-2014, 08:07 AM
martinjcloud martinjcloud is offline
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Location: Florida
 
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Mein Auto: BMW 745i
The battery is about 2 yrs old. Haven't verified the voltage levels yet. Could it be the alternator? I've heard that the stereo and some other electronic components won't power up with a good battery but a bad alt...
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  #7  
Old 01-14-2014, 08:11 AM
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MOPAULY MOPAULY is offline
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Location: Spring Mount, PA
 
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Mein Auto: Many things
I can't tell you as I've not experienced it yet - I'd find an Indy or at least pay the dealer to diagnose, autozone is useless in that department. These cars are hypersensitive to electrical issues. INPA would show you numbers for sure, not sure if you can pull that data from the reset menu in the dash.
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