I'm getting ready to buy the Mrs. a 2010-2015 Golf TDI. It's been a while since we've owned one (2001 TDI Jetta). I have a VCDS cable and I vaguely remember how to use it, but I wanted to know what I should be looking for when I go to buy used. Part of the buying process will be to allow me to run a diagnostics on our potential Golf, but I need your help on reminding me what to look for. I've never bought used while also owning the VCDS cable.