Quote:
Originally Posted by ubfan
It's true. Maybe not all E53s. But mine 2006 X5, when I went to Sears and replaced the battery, they could not start the car. For my car (again, maybe things changed in 2006), I needed to replace the same exact battery or else the EPU needs to be reprogrammed.
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Sounds like they pulled your leg. There is nothing battery related coding on any E53.