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  1. #1
    Active Member One Ring
    Join Date
    May 31 2015
    AZ Member #
    NW Florida

    Weird Electrical Issue

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    So I've been looking through the forum posts and haven't been able to find one that hits my issue. Here's the short and skinny:
    About 2 weeks ago my 2004 S4 and I were driving along and all the electrics died. Literally everything. No speedometer, radio, anything. I even had my Valentine 1 hooked up to my OBD2 and it died as well. Lasted about 1.5 to 2 seconds, then everything came back. Date and time in the dash was correct too. Fast forward to today and I drove to the grocery store. I unlocked it with the fob and put my groceries in the back. Get in to start it and nothing. No lights on the dash, nothing. Tried turning on the radio and it was dead. Then, things start coming back to life. Turn to accessory position on the ignition after about a minute and the dash comes to life, sporadically. Turn to start and nothing. Try again after another minute or so and get the clicking sound like I have a dead battery (battery is well charged and not even close to dead). Give it another minute or so and then she cranks and starts. Radio is running through its CDs and booting up, the dash thinks its August 2003. Drove home just fine, purrs like the kitten she is.
    I've checked all the fuses even the one on the positive terminal on the battery, and they're all good.
    I have no idea what's going on but I figured I poll the forum. I don't want to get stranded anywhere.
    Any help or ideas is much appreciated.

  2. #2
    Veteran Member Four Rings
    Join Date
    Jun 18 2010
    AZ Member #
    My Garage
    1991 Escort Wagon
    East of Cincinnati

    The dreaded electrical Gremlins. Almost sounds Lucasish...
    Old Geezer, formerly known as Stud Muffin

  3. #3
    Senior Member Four Rings VinnysS4's Avatar
    Join Date
    Nov 12 2015
    AZ Member #

    I've had the same thing happen. Leak at the heater core hose got some coolant on the battery and corroded the connection on the terminal. It wasn't until I took it off and saw the actual post corroded that I figured it out. My only other guess would be ignition switch

    Sent from my SAMSUNG-SM-N900A using Audizine mobile app
    1997 VW GTI VR6 (sold), 2003 Audi RS6 (sold), 2010 Audi A4 2.0T (RIP Totaled on 11/2/2015 ) 2005.5 Audi S4

  4. #4
    Senior Member Three Rings lyates1987's Avatar
    Join Date
    Sep 17 2014
    AZ Member #
    Items for Sale

    Sounds like something got wet.

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