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Thread: Battery drain

  1. #1
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    Battery drain

    New Bosch battery fitted a few months ago. Went to start car last Monday morning after car sitting since Saturday night and it was completely flat. Got it jumped and it was ok up until this morning again, it's not completely flat but hasn't enough power to start the car. I drove the car last night with no problems. Any ideas
    2007 Golf GT 2.0 TDI-PD

  2. #2
    Administrator Keithuk's Avatar
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    Its a common problem you can Google battery drain CAN Bus. It has been talked about on here if you search.
    2010 Golf GTD (170) CBBB, 5 Door, Shadow Blue (P6/D5Q), Transmission Code: KXZ, Flat Tyre Indicator, Basic Protection Pack + VCDS.


  3. #3
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    Thanks Keith, much appreciated

  4. #4
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    After market stereo installed ??
    2007 Golf Sport GT 2.0 TDI-PD 140PS

  5. #5
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    As the battery was drained you should get it charged fully by an external battery charger - driving the car (using the alternator) will not get the battery back to a full state of charge and will lead to the battery becoming ineffective prematurely.
    2007 Golf 1.9 TDI-PD (BXE)

  6. #6
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    It received a full charge with an external battery charger. Battery has lasted about a week and a half and is now flat again

  7. #7
    Administrator Crasher's Avatar
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    As ste1981 asked, have you done anything with the radio or added any accessories recently?
    "I disapprove of what you say, but I will defend to the death your right to say it"

    Evelyn Beatrice Hall (28 September 1868 13 April 1956)

  8. #8
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    No upgrades.

  9. #9
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    Go to a service and check you Alternator. Maybe is not charging to the correct voltage.
    I heard of people complaining about this, charging only 11.2 instead of 12.4 as example.
    2006 Jetta 1.6 FSI, Petrol

  10. #10
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    How old is the battery? There's a chance that, if it's not parasitic battery drain, the battery might be at the end of it's service life.
    2005 Golf 1.6 FSI, BLP

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