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    VWVortex


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    Thread: 2007 Jetta 2.5 - Battery Dead

    1. 01-03-2010 02:02 AM #1
      We've had battery problems with our 2007 VW Jetta Wolfsburg since we got it (the battery kept dying). The dealer replaced the battery under warranty in November and said the alternator was fine. Today we got back from a 3-week trip and the battery is dead again.

      I'm not a mechanic, but I would assume that a new battery would be okay if the car was standing for 3 weeks. Is this normal or should I have the dealer look into something else at this point? Thanks guys!


    2. 01-03-2010 03:22 AM #2
      No, the battery should not be dead after sitting for 3 weeks...especially in So Cal. Do you have any after market products that could be drawing any power while the car sits?

    3. Member GodSquadMandrake's Avatar
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      01-03-2010 07:07 AM #3
      Maybe someone was setting off your alarm every 10 minutes for 3 weeks.
      "It would take a cross-wired star trek replicator, if not an act of God, to make a left-hand-drive Skyline GT-R for the U.S." - Don Schroeder

    4. 01-03-2010 09:11 AM #4
      You need to go to an electrical shop. General mechanics are not experienced or equipped to handle electrical gremlins. You could probably do better than the dealership by yourself with a couple trips to the library!

      If by dead you mean bad, you have a real issue somewhere. If the battery is just getting drained this can be pretty easy to fix but require a few hours of labor to track down.


    5. 01-03-2010 10:41 AM #5
      I had a bad brake light switch that caused the brake lights to stay on at weird intervals overnight, resulting in several dead batteries. Might be worth checking out.

    6. Member z4313's Avatar
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      01-03-2010 04:34 PM #6
      Radios that never sleep are known to be culprits.

      3 weeks is not long enough to drain the battery, assuming that the car was kept locked.

      If left unlocked (like I do in my covered garage), some controllers will never sleep and battery will be drained in a few weeks as documented by VW.





      Modified by z4313 at 1:35 PM 1-3-2010


    7. 01-04-2010 09:05 AM #7
      Check to make sure your trunk light is going off when you close it. pull the backseat down.

    8. Member classicjetta's Avatar
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      01-04-2010 12:13 PM #8
      Quote, originally posted by kungfoojesus »
      You need to go to an electrical shop. General mechanics are not experienced or equipped to handle electrical gremlins. You could probably do better than the dealership by yourself with a couple trips to the library!

      Because of the CAN bus being fussy when it comes to going to sleep, this is one of the few times I would recommend going to the dealer. The VAS 5051 has a specific program to monitor power usage when the vehicle is parked and it doesn't take them hours to run it.


    9. Member z4313's Avatar
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      01-04-2010 03:09 PM #9
      Quote, originally posted by blackvento36 »
      Check to make sure your trunk light is going off when you close it. pull the backseat down.

      Central Electric Controller will cut power from some circuits like trunk/door lights after several minutes. So, unlike a Honda, you will not be punished (by a drained battery) just because you forgot an interior light overnight.

      However, the radio gets uninterrupted supply. Its the radio's responsibility to sleep. Some radios are known to be defective in this regard.
      Dealers do a reflash on the radio to solve it.


    10. Member heimbachae's Avatar
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      01-04-2010 04:15 PM #10
      my sisters 2009 Rabbit had a misfire Christmas Eve. Granted, it was around 20 degrees and windy that night so any electronics were a bit unhappy if they were outside, but still an 09!!!
      girls dig when i play with the V

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