Audi A4 2004 1.8T s-line losing battery all battery power every 3 months or so!?

2004 AUDI A4
65,000 MILES
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ANDYBEE
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I bought a new battery after my Audi A4 wouldn't start. My friend who is a mechanic fitted the battery for me. After 3 months, I woke up to go to work and the battery was dead. The next day after a couple of jump starts with jump leads my car starts first time and has done for the last 3 months. Yesterday it did the same, wouldn't start! Today, started first time and not had a problem again? Anyone have a clue? Could it be a short circuit? If so where?
Apr 4, 2012 at 10:07 PM
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SATURNTECH9
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The first thing i would do is have the alternator tested.Then the battery tested also have a parastic draw test done if the first two reveal nothing.
Apr 4, 2012 at 10:20 PM
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ANDYBEE
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Already had both battery and alternator checked... Both working fine!
Apr 5, 2012 at 10:09 AM
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SATURNTECH9
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Alright then if the battery keeps going dead with the car off you need to have a parstic draw test performed.This will check for excessive draw and they can find the draw with this test.
Apr 5, 2012 at 4:24 PM