Tonight I was able to install LED taillight bulbs, in the outer housings thanks to your recommendation. In addition to the rear running/brake/turn bulb housing I did what I said I was going to do. I ran a multimeter on the turn socket and found a small current though it could have been a ghost. I then took leads from the + and - off the stock running/brake/turn socket and bridged onto the corresponding + / - on the turn socket. I was able to get power to it and found that there is a tab that is bend downward that completes a circuit between the working running/brake/turn socket and the turn socket. When bridging this I was able to get the turn socket to function in an identical manner as the stock running/brake/turn socket on our US spec 12' touareg.
It's late and I will get a series of pictures together however knowing this I had ordered 2 of each of these:
1156-R18-T: Red - stock US spec running/brake/turn
BAU15S-R18-T: Red - non functional US spec turn
plugging it in and testing resulted in success however now, if you've looked at the housing you'd see this, the reflector for the US spec turn has no hole to allow for a bulb to be inserted once it is seated on the socket. So I routed out a hole and perfect! only problem is some shavings/dust have collected on the inside of the housing and I can't get it out without heating up the lens and getting it out that way.
with regard to the small tab that was turned downward, once it was bent up I soldered it to prevent it from shaking loose.
I am getting no errors and have tested all combinations of the rear taillights. running off, brake, brake/turn, hazard, running on, etc.
A couple of notes, the led bulbs are red and so the red on the outer housings is a bit "reder" than the inner housings which are still stock bulbs, ok by me. I've tried an led bulbs in there for kicks and it wants to stay on the bright or brake setting, add to the fact that it seems like the bulb is closer to the diffuser and it becomes almost the intensity of rear fogs. I said forget about the inner housings at that point. also the now functioning turn signal area is a tad bit brighter since there is no diffuser.
I will of course break it down again and take pics of all of the noteworthy steps for those that want to duplicate this for now here is a clip of the lights on and the brake being tapped. The frame rate on my cell phone does not do this mod justice. it is instant as you would expect from any LED, it's bright, and the color is spot on. Don't mind the flicker when the lights are dim, it's just the camera.
kleinbus and ssato, thanks for all the information you have provided on this page, i find it very useful. I will try the LED interior bulb modification - the stock reading lights are dim and nasty
I am working on my US model Touareg to change the rear turn lamps to amber because I feel they are much safer than red.
Did anyone ever get them actually working on a US T3? If so then I request video of rear turn signal
From what I understand, i need to
a) flip a tab in cluster to provide power to a currently unused turn socket on the US T3
b) plug in amber bulbs into turn socket - (what is the correct bulb specification to use?)
c) cut hole/space in outer trim to accommodate turn bulb
d) make unknown change in vag-com to make these bulbs flash instead of the red brake bulb when signalling.
Does this sound correct?
Alternative but more expensive option is to purchase euro/row rear clusters i guess, there must be a part number for this. but d) vag-com change probably necessary.
Yes it will need vag-com work as the computer have to be changed from North America (same brake/blinker) to probably ROW (with red brake and amber blinker).
This may lead to trailer light issue as it would change the trailer lights to individual brake and blinker lights so American brake/blinker combo doesn't work anymore.
I agree too on the amber however without VAG coding I settled for the added bulb.
however if we could just get the rear turn function to completely turn off and on when the parking lights are on we would be in a much better situation.
I found that swapping out LEDs didn't do much in terms of noticeability since the wattage difference between parking and brake(or turn) is still the same. the difference is just not that noticeable.
test: go out at night, turn a signal on. compare that to having the parking lights on while signaling. you'll notice now noticeable it is completely off and then on vs. parking/turn(brake). it's terrible in my opinion and almost all current VW's suffer from this.
I'd buy a VAG-COM solely for this mod simply for safety!
New 2012 TDI TReg owner here! thanks to this thread I got the VIM, LED brightness and Convenience windows activated.
A note on the VIM -on the last step; to reset the RNS 850 you hold down: Phone + Climate + Nav + Traffic + center knob button
My current wish list for modifications:
1. 5 blinks for auto blinker
2. Change Alt. Speed Display to read in mph instead of km/h
3. Ability to play video from iPhone on screen (via bluetooth or dock)
2. Try setting the language to UK English then just change all your units back to standard rather then metric. This worked on the previous gen Tregs as well. Nothing will be harmed and worst case again is it does nothing.
3. No idea on that one.
NHTSA says amber turn signals "may be 5.3% safer than red". I'm not sure I'd call that "Much Safer" but I personally prefer amber over red.
Byte 18 bit 5 checked off.
Byte 1, bits 0, 2 and 3 are checked off. sorry for blurry photo.
And byte 0 bit 1 is checked.
This may or may not account for preventing the rear door from automatically opening when the trailer is engaged and lights plugged in the 7 blade electrical connector, so check it with your key fob for clearance after long coding before opening your rear hatch with the remote.
Last edited by Audi5000tdi; 09-04-2012 at 12:23 AM.
Last edited by Audi5000tdi; 09-05-2012 at 07:10 PM.
1168 is from from binary calculation from other forum but we couldn't find it been used on any other continent so who knows?
1568 is from 2011 T-reg with factory coding showing gear display next to D so I asked the member to scan his and send the code.
After doing quick research I found you are second owner with "newer" build date and this difference might be the new transmission controller with new controller model number.
I rely on 1568 as it is from German car.