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  1. #1
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    HID's flickering

    I have recently had a problem with my HID's flcikering and switching off and on again. This genrally happens when the lights have been on for some time but can happen sooner at times.


    I have recently fitted new bulbs (Osram CBI's) but dont think it is the bulbs as it was doing it before I fitted them, just no so much - or maybe I didnt notice as the old bulbs were quite dim.

    Does anybody know why this is happening? I hope it is not the ballasts as they are very expensive to replace!
    Audi A4 1.9TDI Quattro Sport in Black - Turbo Dynamics Re-Worked Std Turbo, De-CAT, EGR mod, Remap, RS4 RARB, Koni FSD's and 320m DTM brakes up front.
    Factory fit - HID's (Osram CBI 5k bulbs), Bose, Comfort Pack, Folding Mirrors, Cruise.

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  3. #2
    Woorlord's Avatar
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    Is it both of them at the same time or only one headlight?
    2001 A4 Saloon 3.0 Quattro Sport Tiptronic - Platinum Leather/Heated Front Seats/BOSE/DIS/Cruise Control
    Retrofits:GmBH Bumpers, F&R Ambient LEDS, OEM Valeo Xenons (D2S) & Headlight Washers, Auto-dipping RVM, Footwell Lights, Vent Control illumination, ISO-Fix, RNS-E & OEM Bluetooth + VIMhack + Video i-pod & Aux inputs, Rear PDC, Powerflow 100mm Tips, Reversing Camera
    2012 A4 Saloon 2.0 TDIe Technik (163ps)
    Diagnostics:VCDS HEX+USB+CAN Cable

  4. #3
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    Quote Originally Posted by Woorlord View Post
    Is it both of them at the same time or only one headlight?
    Good question, both I think!
    Audi A4 1.9TDI Quattro Sport in Black - Turbo Dynamics Re-Worked Std Turbo, De-CAT, EGR mod, Remap, RS4 RARB, Koni FSD's and 320m DTM brakes up front.
    Factory fit - HID's (Osram CBI 5k bulbs), Bose, Comfort Pack, Folding Mirrors, Cruise.

  5. #4
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    I had the same problem. Im sorry to say it was the ballasts. You should be able to pick them up for about 150 each. you can get aftermarket ballasts on ebay for about 40 but you will have to modify the headlight to fit it.
    52 A4 Avant 1.8T Sport Quattro
    Metallic Atlas Grey
    Leather/Alcantara, Xenon, F&R PDC, Ambient lighting, Storage pack, Interior lighting pack


  6. #5
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    i had the same problem and it stopped after a couple of days use

    was told it could be the bulbs just needing time to bed in how true this is i dont know!!!

  7. #6
    BahnStormer77's Avatar
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    I had similar (flickering and then going off)... but drivers side only... ballast needed replacing.
    LostBok/BahnStormer77
    A6 (C7) Avant 3.0TFSI, DSG, rain and light sensor pack, LED headlight pack, MMI touch, SDS high, AMI, 360deg sensors + auto-park, Dunlop SP Winter Sports / Pirelli P Zero's.

  8. #7
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    Quote Originally Posted by lostbok View Post
    I had similar (flickering and then going off)... but drivers side only... ballast needed replacing.
    Hmm, not the answer I wanted!

    Mine has D1S bulbs fitted so I'm guessing they will be very expensive. Is there any way I can test the ballasts before poddin out for new units?
    Audi A4 1.9TDI Quattro Sport in Black - Turbo Dynamics Re-Worked Std Turbo, De-CAT, EGR mod, Remap, RS4 RARB, Koni FSD's and 320m DTM brakes up front.
    Factory fit - HID's (Osram CBI 5k bulbs), Bose, Comfort Pack, Folding Mirrors, Cruise.

  9. #8
    Woorlord's Avatar
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    Quote Originally Posted by QuottroA4 View Post
    Good question, both I think!
    It would be a strange if both Ballasts were faulty at exactly the same time after replacing the bulbs, hence the question if both lights are flickering.
    If only one is flickering then I would swap the Ballasts from left to right and see if the fault moves - keep the bullbs and braided cable on the original side.
    This will let you then identify if it is a ballast/braid cable/bulb fault by elimination of items moved.

    If you need a new Valeo Ballast here is a source >>Link<<, this is very liklely cheaper than Audi and exactly the same part.
    2001 A4 Saloon 3.0 Quattro Sport Tiptronic - Platinum Leather/Heated Front Seats/BOSE/DIS/Cruise Control
    Retrofits:GmBH Bumpers, F&R Ambient LEDS, OEM Valeo Xenons (D2S) & Headlight Washers, Auto-dipping RVM, Footwell Lights, Vent Control illumination, ISO-Fix, RNS-E & OEM Bluetooth + VIMhack + Video i-pod & Aux inputs, Rear PDC, Powerflow 100mm Tips, Reversing Camera
    2012 A4 Saloon 2.0 TDIe Technik (163ps)
    Diagnostics:VCDS HEX+USB+CAN Cable

  10. #9
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    Quote Originally Posted by QuottroA4 View Post
    Hmm, not the answer I wanted!

    Mine has D1S bulbs fitted so I'm guessing they will be very expensive. Is there any way I can test the ballasts before poddin out for new units?
    yes!!!!! swap it with a working ballast: swap them over if one is working better on one side to the other.

    I didn't want to order the ballast (300) and the bulb (110) only to find that itwas a wiring/switching/sensor issue, so I took mine into Audi to check it since I figured it might need an Audi electrician: so probably only they would have all the spares and/or equipment to test it.... in the end they didn't have spare ballasts (even though I'd phoned in advance to check - servicing dept said they could see a stock confirmation and hold had been put on a bulb **doh!!**, but not on the ballast)... and the final test they did was to swap the ballasts over, so if you have one ballast working significantly better than the other, you might as well do that at home and save yourself the extra 125/hr labour. It was about 450-500 in the end, 300-odd for the ballast, 125 for the labour + VAT.

    TBH: if it's ballast / bulbs broken, it's probably the same cost, unless you want yours running with two different colour bulbs: as Xenons age they fade from 4300K brilliant white through to various higher K blue shades with less light, so if you replace one, you may want to replace both anyway (two bulbs make up nearly the same cost of a ballast).
    LostBok/BahnStormer77
    A6 (C7) Avant 3.0TFSI, DSG, rain and light sensor pack, LED headlight pack, MMI touch, SDS high, AMI, 360deg sensors + auto-park, Dunlop SP Winter Sports / Pirelli P Zero's.

  11. #10
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    Quote Originally Posted by lostbok View Post
    yes!!!!! swap it with a working ballast: swap them over if one is working better on one side to the other.

    I didn't want to order the ballast (300) and the bulb (110) only to find that itwas a wiring/switching/sensor issue, so I took mine into Audi to check it since I figured it might need an Audi electrician: so probably only they would have all the spares and/or equipment to test it.... in the end they didn't have spare ballasts (even though I'd phoned in advance to check - servicing dept said they could see a stock confirmation and hold had been put on a bulb **doh!!**, but not on the ballast)... and the final test they did was to swap the ballasts over, so if you have one ballast working significantly better than the other, you might as well do that at home and save yourself the extra 125/hr labour. It was about 450-500 in the end, 300-odd for the ballast, 125 for the labour + VAT.

    TBH: if it's ballast / bulbs broken, it's probably the same cost, unless you want yours running with two different colour bulbs: as Xenons age they fade from 4300K brilliant white through to various higher K blue shades with less light, so if you replace one, you may want to replace both anyway (two bulbs make up nearly the same cost of a ballast).
    Christ mate, what farse! Have identified that it is the nearside which keeps dropping out looking at the head light it appears to have some movement in it. Cant seem to get it to seat properly. Can't help but think if there has been constent movement it could of damaged the ballast?
    Audi A4 1.9TDI Quattro Sport in Black - Turbo Dynamics Re-Worked Std Turbo, De-CAT, EGR mod, Remap, RS4 RARB, Koni FSD's and 320m DTM brakes up front.
    Factory fit - HID's (Osram CBI 5k bulbs), Bose, Comfort Pack, Folding Mirrors, Cruise.

  12. #11
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    Just found the below on ebay - £70 for two although they are used!

    Audi VW D1S D1R XENON BALLAST PAIR ( 1 307 329 193 01 ) | eBay UK
    Audi A4 1.9TDI Quattro Sport in Black - Turbo Dynamics Re-Worked Std Turbo, De-CAT, EGR mod, Remap, RS4 RARB, Koni FSD's and 320m DTM brakes up front.
    Factory fit - HID's (Osram CBI 5k bulbs), Bose, Comfort Pack, Folding Mirrors, Cruise.

  13. #12
    Woorlord's Avatar
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    Quote Originally Posted by QuottroA4 View Post
    Just found the below on ebay - £70 for two although they are used!

    Audi VW D1S D1R XENON BALLAST PAIR ( 1 307 329 193 01 ) | eBay UK
    These are not the B5, B6 or B7 Ballasts - not sure which model of VW or Audi they are used in?
    2001 A4 Saloon 3.0 Quattro Sport Tiptronic - Platinum Leather/Heated Front Seats/BOSE/DIS/Cruise Control
    Retrofits:GmBH Bumpers, F&R Ambient LEDS, OEM Valeo Xenons (D2S) & Headlight Washers, Auto-dipping RVM, Footwell Lights, Vent Control illumination, ISO-Fix, RNS-E & OEM Bluetooth + VIMhack + Video i-pod & Aux inputs, Rear PDC, Powerflow 100mm Tips, Reversing Camera
    2012 A4 Saloon 2.0 TDIe Technik (163ps)
    Diagnostics:VCDS HEX+USB+CAN Cable

  14. #13
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    not sure if they're the same - I can't see those part numbers on VAGcat (although that means pretty much NOTHING!)...

    edit: here's the part on Vagcat (LINK): 8D0907391A
    "8D0907391A: igniter for gas discharge bulb / to be used for: / F >> 8E-2-118 078 / F >> 8E-2-128 560 / F >> 8E-2-127 657 D2S N 104 457 01 / PR-8JG PR-8JJ PR-8JP"
    Very strange as most B6 part numbers are "8E...", but that's what the vagcat says and the picture IS of a B6 headlight....
    Last edited by BahnStormer77; 27th April 2011 at 13:08.
    LostBok/BahnStormer77
    A6 (C7) Avant 3.0TFSI, DSG, rain and light sensor pack, LED headlight pack, MMI touch, SDS high, AMI, 360deg sensors + auto-park, Dunlop SP Winter Sports / Pirelli P Zero's.

  15. #14
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    Cheers for looking mate, just parniod of getting the wrong ones! As mine has D1S fitment bulbs opposed to the D2S ones also fitted to 02 plate cars! Gonna take the lamp units out tomorrow (weather dependent) to see if there are any loose connections as the flickering does seem to be vibration related.
    Audi A4 1.9TDI Quattro Sport in Black - Turbo Dynamics Re-Worked Std Turbo, De-CAT, EGR mod, Remap, RS4 RARB, Koni FSD's and 320m DTM brakes up front.
    Factory fit - HID's (Osram CBI 5k bulbs), Bose, Comfort Pack, Folding Mirrors, Cruise.

  16. #15
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    Hmm, this looks like the right unit!

    Audi Headlamp ballast 8e0941329a | eBay UK
    Audi A4 1.9TDI Quattro Sport in Black - Turbo Dynamics Re-Worked Std Turbo, De-CAT, EGR mod, Remap, RS4 RARB, Koni FSD's and 320m DTM brakes up front.
    Factory fit - HID's (Osram CBI 5k bulbs), Bose, Comfort Pack, Folding Mirrors, Cruise.

  17. #16
    Woorlord's Avatar
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    Quote Originally Posted by QuottroA4 View Post
    Hmm, this looks like the right unit!

    Audi Headlamp ballast 8e0941329a | eBay UK
    The correct B6 Ballast is linked in Post #8.
    2001 A4 Saloon 3.0 Quattro Sport Tiptronic - Platinum Leather/Heated Front Seats/BOSE/DIS/Cruise Control
    Retrofits:GmBH Bumpers, F&R Ambient LEDS, OEM Valeo Xenons (D2S) & Headlight Washers, Auto-dipping RVM, Footwell Lights, Vent Control illumination, ISO-Fix, RNS-E & OEM Bluetooth + VIMhack + Video i-pod & Aux inputs, Rear PDC, Powerflow 100mm Tips, Reversing Camera
    2012 A4 Saloon 2.0 TDIe Technik (163ps)
    Diagnostics:VCDS HEX+USB+CAN Cable

  18. #17
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    stick to woorlord's parts if they're a close OEM equivalent: £120 vs >£300!
    LostBok/BahnStormer77
    A6 (C7) Avant 3.0TFSI, DSG, rain and light sensor pack, LED headlight pack, MMI touch, SDS high, AMI, 360deg sensors + auto-park, Dunlop SP Winter Sports / Pirelli P Zero's.

  19. #18
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    Update..

    Problem seems to of gone away!

    Doighnut here decided to leave his side lights on for over 28hrs which resulted in a flat battery and despite my best efforts (2 day trickle charge coupled by a 2 hr run) the old lead bestie kicked the bucket. So I needed another battery sharpish but only one problem, it was b/hol monday so I ended up podding out £102 for a Bosch silver top at Halfords(should of been 122 but had a voucher left over from crimbo) Annoying as there is a Bosch stockist local to me which stock them for £80!

    Anyways, that aside the flickering has disappeared which only leads me to beleive that it was a current issue? Think the OEM battery had seen too many winters, 9 of them to be exact. What did shock me was the spec of the OEM battery compaired to the Bosch S5 - 40Ah & 340 chranking amps compaired to 80ah and 740 pn the bosch! Maybe I have bought an over specced one? Nah, theres no such thing as over specced!!

    Thanks for all you advice tho chaps
    Audi A4 1.9TDI Quattro Sport in Black - Turbo Dynamics Re-Worked Std Turbo, De-CAT, EGR mod, Remap, RS4 RARB, Koni FSD's and 320m DTM brakes up front.
    Factory fit - HID's (Osram CBI 5k bulbs), Bose, Comfort Pack, Folding Mirrors, Cruise.

  20. #19
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    Problem back again...
    Audi A4 1.9TDI Quattro Sport in Black - Turbo Dynamics Re-Worked Std Turbo, De-CAT, EGR mod, Remap, RS4 RARB, Koni FSD's and 320m DTM brakes up front.
    Factory fit - HID's (Osram CBI 5k bulbs), Bose, Comfort Pack, Folding Mirrors, Cruise.

  21. #20
    Turkster's Avatar
    Bro.Paul 2.5TDI Quattro Sport

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    here is an interesting side kick for you mate, I had this one too, it turned out that the starter motor live cable had rubbed against the other wire on the starter and was shorting out the system, so the car was getting a quick power drain and caused the lights to flicker,

    Last edited by Turkster; 22nd May 2011 at 15:12.

  22. #21
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    Does anyone have a 'how to' guide for removing ballasts?
    Audi A4 1.9TDI Quattro Sport in Black - Turbo Dynamics Re-Worked Std Turbo, De-CAT, EGR mod, Remap, RS4 RARB, Koni FSD's and 320m DTM brakes up front.
    Factory fit - HID's (Osram CBI 5k bulbs), Bose, Comfort Pack, Folding Mirrors, Cruise.

 

 

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