You can check the VCDS Locator thread to see if someone near you has one and could reset the code for you. Personally I bought one. I reprogrammed my Treg hatch to open with the trailer attached. It saved me a trip to the Audi dealer for the wife's A4, so I am calling that a $1000 win, as we have never gotten her A4 in and out of there for less than that.