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    1. Member abt cup's Avatar
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      11-22-2019 02:40 AM #1
      I recently picked up an 08 A3 (FSI engine)...and I just discovered that the rear parking lights are the same brightness as the brake lights. So if the lights are on and I step on the brake pedal...there isn't a change in the brightness of the lights. Only way you can tell is the third brake light will come on. With the lights off...the brake lights come on as normal. Its just that when I turn on the lights...the parking lights are the same intensity as the brake lights. The inner lights come on also.

      Does anyone know why the car is doing this? Did someone mess with the coding of the taillights? I checked the bulbs and I'm coming up with a single filament bulb. #7506 for Sylvania.

      Also does anyone know the configuration of the tail lights?

      I'm lost here

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    3. Member TBomb's Avatar
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      11-22-2019 01:35 PM #2
      It would be hard to say for sure without access to VCDS to see how the coding has been changed, but my money is on someone put the facelift LED tail lights on that car and coded them accordingly, then probably swapped them back at some point and did not reverse the coding.

    4. Member abt cup's Avatar
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      11-22-2019 08:47 PM #3
      I do have an OBDeleven. Would you know by chance where I can look to see if any of the coding was changed? Its probably under Central Electrics somewhere.

      Also do you know what light is what? Like which is the parking lights and which is the brake lights? I really don't get how they are supposed to be a brake and parking light with only a single filament bulb.
      Last edited by abt cup; 11-22-2019 at 08:49 PM.
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    5. Member Bronco's Avatar
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      11-23-2019 11:48 AM #4
      Shouldn’t the bulbs be dual filament to accommodate both functions - tail and brake lights ?


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      Last edited by Bronco; 11-23-2019 at 11:52 AM.
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      2006 A3 2.0T 6sp FWD, Dakar Beige
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    6. Member abt cup's Avatar
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      11-23-2019 01:25 PM #5
      Quote Originally Posted by Bronco View Post
      Shouldn’t the bulbs be dual filament to accommodate both functions - tail and brake lights ?


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      That’s what’s kinda confusing me right now...but the part number listed on multiple sites has it as a single filament bulb. It’s the same bulb for the entire taillight. The car isn’t throwing a any codes in OBDeleven either.


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      11-23-2019 11:08 PM #6
      This definitely sounds like a coding issue. With the stock tails, you should have the surround only lit up with the lights on, and then the inner lights come on when you brake, reverse, or signal (not the same inner light, it's dependent on what you're doing).

      I realize that's probably not a ton of help, but I hope it points you in the right direction.

    8. Member Bronco's Avatar
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      11-25-2019 02:28 AM #7
      Quote Originally Posted by npace View Post
      With the stock tails, you should have the surround only lit up with the lights on, and then the inner lights come on when you brake, reverse, or signal (not the same inner light, it's dependent on what you're doing).
      npace,

      "surround only", sounds like you're describing LED (facelift) tail lights ?

      abt cup has '08, pre-facelift tails ...
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    9. Member abt cup's Avatar
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      11-25-2019 07:50 PM #8
      Yup, bulbs no LED.

      I tried and played with some settings in the OBDeleven over the weekend. I tired checking and unchecking some boxes under the channels that said brake light and rear fog light settings...no changes.
      Last edited by abt cup; 11-25-2019 at 07:54 PM.
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    10. Member abt cup's Avatar
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      11-26-2019 01:25 AM #9
      So I came across this. What do the squares with the check marks in them mean? Maybe this is the channel for the third brake light?

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    11. Member Bronco's Avatar
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      11-26-2019 01:53 AM #10
      Quote Originally Posted by abt cup View Post
      Yup, bulbs no LED.

      I tried and played with some settings in the OBDeleven over the weekend. I tired checking and unchecking some boxes under the channels that said brake light and rear fog light settings...no changes.
      I believe there is a lights setting somewhere with options "North America" vs. "Rest of the World" (meaning European mainly).
      Iirc, I might have to switch from NA to Euro when I installed my LED tail lights. So if one of the previous owners had installed LED tails, he might have switched to Euro and then forgot to switch it back to NA when putting the original tails back on ... just a thought ...
      Bronco

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    12. Member ceese's Avatar
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      11-27-2019 12:11 AM #11
      Someone up the thread mentioned they swapped to LED tails and then back. You might want to look for LED upgrade threads they might have the default codings listed.
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    13. Member abt cup's Avatar
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      11-27-2019 12:36 AM #12
      Quote Originally Posted by ceese View Post
      Someone up the thread mentioned they swapped to LED tails and then back. You might want to look for LED upgrade threads they might have the default codings listed.
      I though the LED lights require a different harness? I’m not really interested in modding this car too much. I already have a Mk7 GTI to mod. The A3 is basically my runabout. The car we’ll be taking when we go mountain biking.

      I did see an A3 tonight and all three lights on the back of the car become brighter when the brakes are applied.

      Does anyone one have the coding information for the rear taillight?


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    14. Member abt cup's Avatar
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      11-27-2019 12:37 AM #13
      Quote Originally Posted by Bronco View Post
      I believe there is a lights setting somewhere with options "North America" vs. "Rest of the World" (meaning European mainly).
      Iirc, I might have to switch from NA to Euro when I installed my LED tail lights. So if one of the previous owners had installed LED tails, he might have switched to Euro and then forgot to switch it back to NA when putting the original tails back on ... just a thought ...
      I did see something on the OBDeleven about NA and Euro. I’ll have to check that again.


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    15. Member Bronco's Avatar
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      11-29-2019 08:44 PM #14
      Quote Originally Posted by abt cup View Post
      I though the LED lights require a different harness?
      That's correct.

      Here is my post about the Orig 2006 (pre-face) to LED swap that includes info on the harness:

      <https://forums.vwvortex.com/showthread.php?9355197-where-to-find-newer-style-LED-taillights-for-my-07-pre-facelift&p=113821601&viewfull=1#post113821601>


      Quote Originally Posted by abt cup View Post
      I did see an A3 tonight and all three lights on the back of the car become brighter when the brakes are applied.
      I believe that is correct as well.

      The inner lights can also be used as rear fog lights. Appropriate head light switch and coding are required.
      Bronco

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    16. Member
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      11-30-2019 06:54 PM #15
      Quote Originally Posted by Bronco View Post
      npace,

      "surround only", sounds like you're describing LED (facelift) tail lights ?

      abt cup has '08, pre-facelift tails ...
      Quote Originally Posted by abt cup View Post
      Yup, bulbs no LED.

      I tried and played with some settings in the OBDeleven over the weekend. I tired checking and unchecking some boxes under the channels that said brake light and rear fog light settings...no changes.

      I have a facelift car (2012) but I do not have LEDs, I have regular bulbs.

    17. Member Bronco's Avatar
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      11-30-2019 07:47 PM #16
      Quote Originally Posted by npace View Post
      I have a facelift car (2012) but I do not have LEDs, I have regular bulbs.
      Probably because you bought the car in Germany. You're different
      Bronco

      2006 A3 2.0T 6sp FWD, Dakar Beige
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    18. Member ceese's Avatar
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      12-02-2019 11:16 PM #17
      Quote Originally Posted by abt cup View Post
      I though the LED lights require a different harness? I’m not really interested in modding this car too much. I already have a Mk7 GTI to mod. The A3 is basically my runabout. The car we’ll be taking when we go mountain biking.

      I did see an A3 tonight and all three lights on the back of the car become brighter when the brakes are applied.

      Does anyone one have the coding information for the rear taillight?


      Sent from my iPhone using Tapatalk
      Most people upgrade with an adapter harness. No wiring mods required. If you take off your hatch panel look for a splice in the plate light wiring If it's there then your car had LEDs installed at some point.
      __________________________________________________ _______________
      Anyone who looks at the Audi A3 3.2 DSG and sees an overpriced economy car should not be allowed to play with Rottweiler puppies.
      Robert Farago, The Truth About Cars

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