Dallas
Well-known member
I search on this and tried a few things and it's still not working properly, I know these MKV (06 Jetta)are prone to electrical issues, but I need to get a handle on this. Here is my symptom on the tail light. During the day my drivers side outside blinker / brake light works fine. At night when I turn the lights on everything works for a little while, (well sometimes it's immediate, sometimes it takes a little while). The tail lights work fine until I use my left blinker or brake. The outside light will go out and post the light out indicator on the dash. At this point I can turn my lights OFF and tap my brakes a few times or turn the blinker on and it will start working and the dash indicator will go off. As soon as I turn my lights back on and press the brakes it will go out again, and the indicator will come back on. So I think it has something to do with the switching voltages for the different brightnesses of the bulb.. Why couldnt VW just use a good old 1157 bulb. I tried new oem bulbs, cleaning the socket contacts, Deoxit on the sockets. I don't think power is at the socket and socket plug when it is failing. So I think the problem is further up the line. Any help out there?