Quote:
Originally Posted by Qsilver7
You're correct for now...but if you move up to a BMW model that is newer than our generation (the ones with iDrive etc)...BMW uses an IBS (intelligent battery sensor) that monitors the charging system between the alternator & battery...and adjusts the output of the alternator as the battery ages.
With this system, a new battery requires "coding" (yeah, more complication). 
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ok thanks, so does a trickle charger need to be used on a say a end of 2004 e53 when the battery is being changed or not? and does the fella who originally posted need to get he car to the dealer to turn off this transport mode if thats what has happened to his car>?