Question Engine Electronics 2nd Gen R56 Cooper S Most liked posts in thread: New battery, still won't start.

  1. MCS02

    MCS02 Moderator
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    #3 MCS02, Nov 19, 2019
    It sounds like you are out of sync. I believe the key and BCM has to be in sync. Some times with a low battery they can get out of sync. It will have to be reprogramed. I believe only the dealer can do this but perhaps a good independent shop can. What part of the country are you in maybe someone here knows a good shop
     
  2. 00Mini

    00Mini Well-Known Member

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    #2 00Mini, Nov 19, 2019
    I believe immobilizer is the key word to your problem most likely brought on by low battery and battery replacement. If this is the case you’ll need to register your battery with cars computer. I wish I could be of more help but I have an early R53 and it does not have that feature.
     
  3. MCS02

    MCS02 Moderator
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    #4 MCS02, Nov 19, 2019
    Also your battery may need to be registered this just helps with the smart charging system. It won't fix your problem but your Foxwell scanner can do this.
     
  4. Crashton

    Crashton Club Coordinator

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    #5 Crashton, Nov 19, 2019
    Welcome to M/A Trevor. Sorry about your issues. Let us know where you are & we may be able to point you toward a competent shop.

    Man I love these new modern cars, when they work.:Dead: I'm very glad I did a proactive battery replacement on our MINI. Maybe I dodged a bullet. :Nailbiting:
     
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  5. Trevor Ward

    Trevor Ward New Member

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    #6 Trevor Ward, Nov 23, 2019
    Thank you for the suggestion. I'm in the Phoenix/Laveen, AZ area. It would be a whopper of a tow bill if I have to take it across town to be reprogramed. Any suggestions from the group would be helpful :)

    I was able to at least register the battery replacement and verify all but F31-35 give me voltage across both test points
     
  6. MCS02

    MCS02 Moderator
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    #7 MCS02, Nov 23, 2019
  7. Trevor Ward

    Trevor Ward New Member

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    #8 Trevor Ward, Nov 23, 2019
  8. MCS02

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    #9 MCS02, Nov 23, 2019
    Oops sorry I should have caught that