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  1. #1
    Established Member Two Rings TwoSnelz's Avatar
    Join Date
    Sep 09 2016
    AZ Member #
    380498
    My Garage
    2001.5 Audi S4, 1998 BMW 323is
    Location
    Northeast PA

    Headlight going out intermittently

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    My driver side low beam is shutting off randomly. If I turn the lights off then on again it fires fine and stays lit for a random amount of time.

    Do you all think this is a bulb or something else?

    Sent from my XT1254 using Audizine mobile app
    2001.5 Cactus Green S4 - Rebuilt Motor, Frankenturbo F21s/Inlets, Gates Timing Belt, 034 Spider Hose/Rear Subframe Reinforcement/Rear Swaybar/Track Density Motor Mounts, XSPower Y-Pipe, 85mm MAF Housing, Stratosphere DVs, SSA Turboback Exhaust, JHM FMIC, Samco TBB, 550cc EV14 Injectors, Motoza 93 Tune, ST Coilovers, Rebuilt 01E, Southbend Single Mass Steel Flywheel, USP Slave Cylinder w/ Steel Braided Line, Clutchmaster FX400 6Puck Clutch

  2. #2
    Veteran Member Four Rings vavJETTAw36's Avatar
    Join Date
    Jul 04 2012
    AZ Member #
    96276
    Location
    Woodbridge, VA
    Items for Sale

    Xenon ballast is probably going bad.


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  3. #3
    Senior Member Three Rings MugelloB7RS4's Avatar
    Join Date
    Feb 06 2015
    AZ Member #
    313804
    Location
    Toronto

    Swap bulbs left to right and see if the problem moves with the bulb. If it doesn't, swap ballasts left to right and see what happens.

    You should be able to narrow it down to a bulb issue or ballast issue pretty quick.

  4. #4
    Established Member Two Rings TwoSnelz's Avatar
    Join Date
    Sep 09 2016
    AZ Member #
    380498
    My Garage
    2001.5 Audi S4, 1998 BMW 323is
    Location
    Northeast PA

    Good idea Mugello I try it and see what happens

    Sent from my XT1254 using Audizine mobile app
    2001.5 Cactus Green S4 - Rebuilt Motor, Frankenturbo F21s/Inlets, Gates Timing Belt, 034 Spider Hose/Rear Subframe Reinforcement/Rear Swaybar/Track Density Motor Mounts, XSPower Y-Pipe, 85mm MAF Housing, Stratosphere DVs, SSA Turboback Exhaust, JHM FMIC, Samco TBB, 550cc EV14 Injectors, Motoza 93 Tune, ST Coilovers, Rebuilt 01E, Southbend Single Mass Steel Flywheel, USP Slave Cylinder w/ Steel Braided Line, Clutchmaster FX400 6Puck Clutch

  5. #5
    Senior Member Four Rings VinnysS4's Avatar
    Join Date
    Nov 12 2015
    AZ Member #
    364349
    Location
    Oregon

    Quote Originally Posted by MugelloB7RS4 View Post
    Swap bulbs left to right and see if the problem moves with the bulb. If it doesn't, swap ballasts left to right and see what happens.

    You should be able to narrow it down to a bulb issue or ballast issue pretty quick.
    Yup. That's the way to tell

    Sent from my SM-N920V using Tapatalk
    1997 VW GTI VR6 (sold), 2003 Audi RS6 (sold), 2010 Audi A4 2.0T (RIP Totaled on 11/2/2015 ) 2005.5 Audi S4

    My build log
    http://www.audizine.com/forum/showth...-s-s4-timeline

    Texpoops "Correct, but a half inch difference isnít going to accelerate wear by much. Iím sure the front dips that much with a fatty in the front"

  6. #6
    Established Member Two Rings mys4.org's Avatar
    Join Date
    Dec 18 2007
    AZ Member #
    23468
    My Garage
    2001 Audi S4 2.7t
    Location
    Bothell, WA

    It is going to be the Xenon ballast. If it was the bulbs, they will dramatically change colors when they are going out. Typically a pink/purple color is when they are going out. When the ballast is having issues or a poor electrical connection the bulb will flash on and of.

  7. #7
    Established Member Three Rings ReggieNoble's Avatar
    Join Date
    Dec 17 2016
    AZ Member #
    388492
    Location
    Fl

    Quote Originally Posted by mys4.org View Post
    It is going to be the Xenon ballast. If it was the bulbs, they will dramatically change colors when they are going out. Typically a pink/purple color is when they are going out. When the ballast is having issues or a poor electrical connection the bulb will flash on and of.
    Not always true, I've had 3 bulbs burn out by flashing then flickering off. One was a Phillips, second was an Osram, and the third one was ebay special. I bought 6 sets of D2S bulbs off ebay for $10 a set. Now I switch out new bulbs about once a year even if they are working fine.

    Sent from my SAMSUNG-SM-J120A using Audizine mobile app

  8. #8
    Senior Member Two Rings 1thenaton1's Avatar
    Join Date
    May 13 2010
    AZ Member #
    58947
    My Garage
    Q7 TDI
    Location
    SLC

    I battled this for years thinking it was ballasts going out - turns out the piece that holds the bulb had bent slightly and getting that back into shape fixed the problem. Also went with Philips bulbs in 5000k huge improvement over the off-brand bulbs i got from hid concept and the terrible HID kits people put in these things with ddm ballasts. YMMV

  9. #9
    Veteran Member Four Rings jpurre's Avatar
    Join Date
    Jun 11 2013
    AZ Member #
    116957
    My Garage
    2013 Mustang GT/CS vert
    Location
    South Florida
    Items for Sale

    Probably a ballast. Easiest is to go to The Retrofit Source and get a D2S kit with ballasts and bulbs and wire them in. I did this with mine several years ago when the flickering started.
    2001 Silver F21 TIP (SOLD)
    Build thread--> http://www.audizine.com/forum/showth...ally-Happening



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