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Register and Code a new battery!


Register and Code a new battery!
  1. Bnks334

    Bnks334 Specialist

    Bnks334 submitted a new document:

    Register and Code a new battery! - Why pay the dealer when you can do it yourself? See why it's necessary and how it's done!

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  2. doublespaces

    doublespaces Administrator

    2009 E93 335i
    This should definitely save people some money. Thank you for contributing!
  3. doublespaces

    doublespaces Administrator

    2009 E93 335i
    I am getting some funkiness going on with my car which makes me think I need a new battery.

    It started off when I did my ST swap, battery ran down to pretty much nothing. Putting the smart charger on resulted in peculiar things like detecting as a 6v battery and charging that way for a while, I'm sure that wasn't good. I managed to get the car charged up, it always starts up however my rear window heater element is disabled according to ISTA-D and my clock has begun resetting. Both of these are symptoms I've read about a battery going bad.

    I'm not sure if re-registering the battery could help as no matter how long I drive the problem doesn't really appear to resolve itself, I also have been driving fairly short lengths, sometimes only just 5-10 minutes. I'm also electronics heavy and intend to do even more with my audio system, which brings me to my next question. Could I use this guide to switch from my white battery, which I am assuming is a standard, lead acid type, to an AGM battery, that I'm hoping will be more resilient to the way I use my car?
  4. tony@codewerx

    [email protected] Private Vendor


    Yes. when changing to an AGM - you could go straight to the cas and change the battery class.

    The VO changes are for completeness - optional - I doubt you would be doing a default code anytime soon.

    You could use mhd to register the battery as well.