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Sidelight bulbs with Xenons

Discussion in 'A3/S3 Forum (8L Chassis)' started by Perplexer, Jan 23, 2011.

  1. Perplexer

    Perplexer Member

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    I have a 2002 S3 with Xenons and decided to replace the sidelight bulbs as they looked very poor (yellow) next to the Xenons.

    Looking online I purchased some Ultimate II LED's from Ultra LED's (The Ultimate II 501/T10/194 1 x 1 Watt Ultra Xenon White by Ultra Leds U.K) which when installed look great and match the headlights.

    The only problem is they seem to interfere with the failed bulb detection system in the car and at random display the bulb failed warning on the DIS (mostly when I press the brake pedal).

    Now the highest wattage I can find for a sidelight is 5W. Is this right? Is there a standard bulb that is brighter than normal to match up to or close to the Xenon without going LED?

    If I have to go LED what ones don't interfere with the bulb failure system?

    Cheers
     
    #1 Perplexer, Jan 23, 2011
    Last edited: Jan 23, 2011
  2. s3dave

    s3dave TFSI Hybrid
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  3. aragorn

    aragorn "Stick a V8 in it!"
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    Are you sure the system actually senses front sidelights?

    B5 A4 only senses front dip beam, and rear tail and brake lights...

    Could be a slightly dodgy brake bulb if it only happens when you brake?
     
  4. Perplexer

    Perplexer Member

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    I have changed every bulb in the rear of the car except for the number plate lights. It still displays the warning.
     
  5. Perplexer

    Perplexer Member

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  6. aragorn

    aragorn "Stick a V8 in it!"
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    Then its nothing to do with the led's

    Fit some new Brake bulbs.
     
  7. s3dave

    s3dave TFSI Hybrid
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    I think aragorn is correct, about the front side lights not connected to the bulb failure warning
     
  8. Perplexer

    Perplexer Member

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    Thanks for the responses.

    I have changed the bulbs. Same issue (bulb holder maybe or a dodgy new bulb?). I only get this when the LED's are installed. If I fit standard bulbs I do not see the warning.
     
  9. aragorn

    aragorn "Stick a V8 in it!"
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    If its happening with the lights off, its nothing to do with the LED's, unless you've fitted LED brake lights.

    The load monitoring box sits between the light switch and the lights themselves, if the lights are off, the box isnt doing anything.

    The symbol that appears on the DIS is different for brake lights and other lights. Which symbol are you getting? Brake light warning has curved brackets around the bulb as well as it X, whereas tail/headlights etc just shows a bulb with an X

    I'd try another set of brake bulbs, if it keeps happening then check the holders making good contact.
     
  10. The Doctor

    The Doctor Well-Known Member

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    I had a front sidelight bulb go recently and no warning came up on the dash (2003 S3). So I can only assume that the sidelights don't trigger the display warning. Replaced the standard bulbs with LEDs and the display is fine.
     
  11. Nilz

    Nilz Defo worth the wait :)

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    Sidelights dont trigger the dash display, only mains, brake and indicators.

    Just had mine replaced with LED ones and they seem ok.
     
  12. s3dave

    s3dave TFSI Hybrid
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    I think it has to be said these led lights have a very poor life, i am on my second set and one as gone already......got them from 2 different suppliers too
     
  13. aragorn

    aragorn "Stick a V8 in it!"
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    Rear tail lights trigger a warning, but not the fronts.

    I wonder why the LED's are so poor?

    LED's themselves are extremely hardy (consider that your dashboard and dials are lit by LED's and they're still working perfectly 10+ years later)

    I can only imagine either the actual LED's they're using are second or third grade units from proper **** manufacturers, or they're failing due to bad soldering or similar?
     
  14. LiveWire

    LiveWire S3X

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    I have the exact same sidelights and have no problems with warning lights.

    Did you make sure you didnt push them to far in because it says not to push to far in because the metal outer body of the LED surround will touch the conector for the wiring (bit you push the bulb into) and it will cause a short.

    And they give a 1 year warrenty on them so they cant be that bad!!!
     
  15. Perplexer

    Perplexer Member

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    Thanks.

    The warning is an X in a circle. It is such a wierd and none predictive fault.
     
  16. Perplexer

    Perplexer Member

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    Yeah I have checked and double checked :)

    To be honest I have become an expert at getting these bulbs in and out of the holder without ripping my hands to shreads or moving the battery!
     
  17. s3dave

    s3dave TFSI Hybrid
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    you need to be looking at the rear clusters for that warning, dodgy brake bulb
     
  18. Perplexer

    Perplexer Member

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    Will do - thanks.
     
  19. aragorn

    aragorn "Stick a V8 in it!"
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    This shows you the difference:
    [​IMG]
     
  20. LiveWire

    LiveWire S3X

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    lol I know what you mean!! I had one (LED bulb) fall inside of the light cluster!! was a nightmare to get back out, had to remove the main beam bulb and dangle a magnetic extension bar (having to bend it) to get it back out!! pi**ed me right off.
     
  21. dany2k

    dany2k Member

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    right mate, have you tried hooking it up to vagcom. there's an outside shot you changing you sidelights could have coincided with the common brake pedal switch problem: would probably explain why it only happens when you press your brakes. TPS do the part for £15ish.
     
  22. Perplexer

    Perplexer Member

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    lol that must have been a nightmare to get out!
     
  23. Perplexer

    Perplexer Member

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    That is an interesting thought - thanks. I only have the 'cheap' version of VAGCOM so can't make any changes, but should I still be able to see the fault? What would VAGCOM report it as?
     
  24. Perplexer

    Perplexer Member

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    I am sure its the one on the bottom-left. Thanks for the diagram.
     
  25. dany2k

    dany2k Member

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    hi mate,
    something similar to this (code may be slightly different):

    16955 - Brake Switch (F): Implausible Signal
    P0571 - 35-10 - - - Intermittent
    Readiness: 0000 0000

    you'll be able to see the fault if you scan the brake components individually: you won't be able to do the full scan with the shareware version. it's a simple enough fix, don't worry!
     
  26. Perplexer

    Perplexer Member

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    I will have a look this weekend - cheers :)
     
  27. sweeney23

    sweeney23 s23 swe

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    you need canbus bulbs dude
     
  28. Nilz

    Nilz Defo worth the wait :)

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    In typical bl00dy fashion, one of my LED side lights has gone already, only been in for 6 days!!!!
     
  29. Perplexer

    Perplexer Member

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    When I first had mine fitted one died after 2 months.
     
  30. Perplexer

    Perplexer Member

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    Like this?
     

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