Just to clarify, i drive an 8L S3 so maybe you mk4 gurus could shed some light on my issue...

the other night I was driving the car home and about halfway into the trip the traction control light decided to turn on; I did not manually press the ESP button at all. Now every time I drive the car, the TC light comes on as soon as I start the car without me pressing the ESP button.

I changed the MAF sensor with a brand new one (as thats what other forums have said to do) and that did not fix my problem. I don't have direct access to a VCDS but could it be that my haldex has finally let go?

I plan on getting it scanned asap but yeah, just trying to figure out possibilities.

Cheers