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  #1  
Old 03-06-2013, 07:33 AM
BIGBODY760Li BIGBODY760Li is offline
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Location: Philadelphia
 
Join Date: Jan 2012
Posts: 3
Mein Auto: BMW 760 Li
Unhappy Transmission light

I bought a 2003 745i. I noticed that the battery would die within a couple of hours. I would hear the GPS Navigation system in the back keep cycling. so I unplugged it and the car stopped dying. I also have another problem with the car. If you drive it over three miles or so the transmission fault light comes on. It seems as if it is in stuck in high gear. someone told me that when the GPS Nav system does work, it also messes up the transmission. Need some help to diagnose
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  #2  
Old 03-06-2013, 08:01 AM
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Fast Bob Fast Bob is offline
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Location: Here, there, everywhere....
 
Join Date: Jun 2004
Posts: 34,503
Mein Auto: 2004 330Ci ZHP 3 pedals
These care are *extremely* battery-dependent, and will generate all kinds of seemingly unrelated gremlins in the presence of a weak/failing battery. If yours is more than 4 years old, it`s highly suspect. Have it load-tested (NOT just a simple voltage check, which means nothing)
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Old 03-06-2013, 12:52 PM
BIGBODY760Li BIGBODY760Li is offline
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Location: Philadelphia
 
Join Date: Jan 2012
Posts: 3
Mein Auto: BMW 760 Li
Unhappy

It is a brand new battery, that is fully charged. I would like to know if anyone ever had there gps nav unit mess up and then the transmission started acting up.
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  #4  
Old 03-06-2013, 01:17 PM
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Fast Bob Fast Bob is offline
Keeping it surreal
Location: Here, there, everywhere....
 
Join Date: Jun 2004
Posts: 34,503
Mein Auto: 2004 330Ci ZHP 3 pedals
STILL sounds like a bad battery.....maybe you have a drain on the system somewhere. Do you have a test meter ?
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