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Battery dying.2000 A3 1.9tdii

Colin Sutton May 20, 2020 at 1:16 PM

  1. Colin Sutton

    Colin Sutton Member

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    Not used car for 3 days [due to Wales lockdown] Engine turns over sluggishly then battery dies . Recently substituted battery for same reason as same was happening . Besides new battery , any suggestions please .
     
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  3. MPH

    MPH Active Member Audi A3 Manual

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    Have you checked the alternator is charging the battery

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  4. Dohcwp

    Dohcwp Setting the Standard Team Silver Audi A3

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    could be a bad ground, even though the car is parked certain systems like the alarm is still on and a bad ground has that effect, disconnect the negative terminal and put it back on, if there is a big spark then something is drawing too much power
     
  5. MPH

    MPH Active Member Audi A3 Manual

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    Any luck with the battery situation yet Colin

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  6. hydro s3

    hydro s3 S3 amk Team Ming Blue Audi S3

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    Do you have anything like a dash cam wired that's is constantly live or a dongle in ur obd port. Something like that might drain your battery.
     
  7. MPH

    MPH Active Member Audi A3 Manual

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    My dash Cam is hardwired and never seems to drain the battery though

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  8. hydro s3

    hydro s3 S3 amk Team Ming Blue Audi S3

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    When I got mine fitted it always had a live feed going to it instead of turning of and on when the ignition was turned on or of and would drain the battery every few days unless started.
     
  9. MPH

    MPH Active Member Audi A3 Manual

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    I think the issue could be DashCam dependent depending on what cam you have installed and how much it drains over period of time mine is Nextbase 312 g some models obviously drain more than others I would say.

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  10. Colin Sutton

    Colin Sutton Member

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    No accessories ,no dash cam .
     
  11. MPH

    MPH Active Member Audi A3 Manual

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    Then possibly a short seems to be the other alternative any codes Colin?

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  13. Dohcwp

    Dohcwp Setting the Standard Team Silver Audi A3

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    do you have an aftermarket radio installed ?
     
  14. Colin Sutton

    Colin Sutton Member

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  15. Colin Sutton

    Colin Sutton Member

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    Attached Files:

  16. Colin Sutton

    Colin Sutton Member

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    This OK .
     

    Attached Files:

  17. MPH

    MPH Active Member Audi A3 Manual

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    Have you cleared all the codes yet before you scanned

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  18. MPH

    MPH Active Member Audi A3 Manual

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  19. Colin Sutton

    Colin Sutton Member

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    All codes cleared. Rescanned & all clear. Thanks.
     
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  20. MPH

    MPH Active Member Audi A3 Manual

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    Should any reoccur in the future please see my previous links

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  21. Colin Sutton

    Colin Sutton Member

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    Bought a digital clamp meter to try to find a parasitical drain .
     
  22. Colin Sutton

    Colin Sutton Member

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    DCM.
     

    Attached Files:

  23. Colin Sutton

    Colin Sutton Member

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    Did a 12 mile trip down A48M / M4 to clear engine & charge battery . ( On my own no contact ). Parked up 6pm 13.14v. 10am today 12.5v ,so .64v loss in 14hrs . Will try clamp meter today.
     

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