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Old 09-19-2012, 05:58 PM
bimmerfan52 bimmerfan52 is offline
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Location: Arizona
Join Date: Feb 2012
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Mein Auto: 545i

Originally Posted by kskane View Post
One more thing, the cold start has to be with the car not turned on for atleast 10-12 hours. If I turn the car on before 10 hours, the error is not visible. Does the time has to do anything with the car being cold or does it points to battery.

I have already checked the battery it is giving 12v in cold when the error happens, does not seems to be the battery.
You might see if you can measure the temperature of the trans housing to find out what temperature it is after sitting 10 hours.

Once I was going to do a drain and fill on the transmission. I ran a short trip and then figured after 6 hours it would be cool enough to work on. No way! Still very hot.

I don't think it is the battery. If you have a charger you might "top off" the battery with a charge before starting it cold to see if that makes a difference.
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