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  1. Low battery warning 
    #1
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    Keep getting a low battery warning on the Passat estate - itís a 2016 model. Taken it for a drive and it goes away but not before long it comes back. Itís now saying battery almost flat.

    Thinking of just fitting a new battery but wondering if it need to go into a dealer rather then just kwikfit?
    VW Passat GT 4 Motion 2.0 BiTdi, '16MY in Midnight Blue, keyless entry, memory seats, active info display and Discover Nav Pro
    Audi A7 20MY Vorsprung 3.0tdi in Daytona grey, with optional rear cup holders! (Previously A7 16my S Line)
     
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  2. Re: Low battery warning 
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    If it has Stop/ Start it will need an AGM replacement battery.
    Then after fitting, coding with VCDS so the electronics knows there is a new battery fitted & charges accordingly.
     
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  3. Re: Low battery warning 
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    Thanks wasnít aware of the coding requirement. I assume any reputable garage can do that now.
    VW Passat GT 4 Motion 2.0 BiTdi, '16MY in Midnight Blue, keyless entry, memory seats, active info display and Discover Nav Pro
    Audi A7 20MY Vorsprung 3.0tdi in Daytona grey, with optional rear cup holders! (Previously A7 16my S Line)
     
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  4. Re: Low battery warning 
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    "
    I assume any reputable garage can do that now. "

    I don't think so.

    They would need specific VW software like VCDS to get into the battery module.
     
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  5. Re: Low battery warning 
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    I have a similar 2015 model GT Bi-Turbo 4-Motion Passat Estate and noticed last year that cold starting the engine was beginning to sound as though the battery was approaching the end of its useful life - no battery warnings though.

    I bought a replacement battery with a five year warranty from Halfords. They fitted it, then plugged in a box and pressed its buttons for a while and that was that. It seemed that the button pressing also turned off some features in the Driver Assistance Pack, but when I drove it the next day everything was working normally.

    In November 2019 the battery cost £157 fitted. I see that today's price has advanced to £184.
     
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