I just ordered my second pair or ebay led's and for some reason the left one is out again. Hm.. at first I figured, what you get what you pay for, but then I noticed that it was the left one again. I went ahead and yanked the LED out and put the stock one back in. Nothing. So, if its not the bulb what can I be? Any ideas/fixes?
Sounds like harness damage or a bad fixture.
There is a single circuit for both lights,
harness splits to both license lights inside the rear bumper.
So if one light works and the other doesn't, the damage almost has to be
either the harness inside the bumper or a bad fixture.
You can identify which it is by first swapping the two fixtures.
But right now he has no power to the circuit. How do you deal with that? Is it true you need to reset the ECU with a VCDS.
No, the Vehicle Electrical System Controller J519
will shut down power to the circuit when a fault is detected,
but it will reset itself on its own when the fault is corrected.
No VAG-COM needed for that.
If one light is still working, then the controller has not shut it down
and no error code will be stored.
When the controller does shut down the circuit, it will store a fault code for the event.
Even though VAG-COM is needed to clear the stored code,
the stored code will not interfere with normal operation.