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B9 Low battery warning

terminator x Jan 30, 2019

  1. terminator x

    terminator x Registered User

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    Fairly sure I saw an A4 / S4 thread on this. Car just 11 months old, seems too soon for a dud battery. Anyone else had this?

    Presumably just get a new one sorted? I feel the dreaded RS tax coming on!

    TX.

    Edit - interestingly the car has started saving battery power as the light in the boot won't come on and sometimes the external lights stay off when car is opened.

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  3. Dennis Rudolfsson

    Dennis Rudolfsson Registered User

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    So you have a 11 month old B9 RS4? With a bad battery? Call the dealer, tell them to sort the **** out, and give you a loaner or wait, and then drive home with a new battery free of charge.
     
  4. terminator x

    terminator x Registered User

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    Ha ha yes fair enough I will do that + just wanted to see if others have it too.

    TX.

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  5. Dennis Rudolfsson

    Dennis Rudolfsson Registered User

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    Good!

    Now lets analyze the problem, How is your driving? How many miles? Alot of short journey or long ones?
     
  6. terminator x

    terminator x Registered User

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    13k miles :flushed:

    Mix of medium + short journeys albeit this last few months short journeys tbf. Plus cold weather perhaps putting strain on the battery.

    TX.
     
  7. Dennis Rudolfsson

    Dennis Rudolfsson Registered User

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    There is probably your issue, you could just try to go for a longer 2 hour trip and ser if it gets better :)
     
  8. terminator x

    terminator x Registered User

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    Booked in to Audi so let's see what they say!

    TX.

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  9. Jonny B

    Jonny B Registered User

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    Mine yesterday was totally dead . Hadn’t been driven for 8 days . Been in a garage but clearly it’s been cold . Got a dash cam which should have cut off as the voltage dropped not sure if that’s my issue guessing it hasn’t helped . Car not used much last few weeks , 14 months old . Would have expected I could have left it for at least 3 weeks without an issue even in winter. On charge as I write this .


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  10. terminator x

    terminator x Registered User

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    You just reminded me, I have an aftermarket dashcam too ... see if Audi blame that!

    TX.

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  11. D0C

    D0C Registered User

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    My guess is the cold weather. The battery certainly shouldn't be shot after a year.
     
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  13. Jonny B

    Jonny B Registered User

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    Charged mine overnight with my CTEK . Voltage 12.7 Car started , no warnings , drove today no stops 30 miles . Got home parked up outside left it for 2 hours , just checked voltage showing 12.2 , still starts , but clearly I have something draining it , or it had dropped so low previously it’s now not holding it’s charge . I think I’m right in saying new battery needs to be coded in on this model , so joy of joys can’t do it myself a trip to my dealer on the cards . I Assume the battery is not covered under the warranty.


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  14. pjeffe9172

    pjeffe9172 Registered User

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    I had this with a Nissan Qashqai a few years back. The garage bench tested it and found it had a faulty cell. They said the stop start functionality can sometimes cause this and changed it under warranty no problem.
     

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