I noticed some posts re the problem of tiptronic not working when you move the shifter over to the manual position. Mine has the same problem so my sparky removed the complete unit and tested all the switches and all were faulty. He replaced the switches but had to break the clip holding the crossover one and even glue and a screw won't hold it. We are going to try fitting a rocker switch connected to the crossover cables and just use that to turn on tiptronic. I'll post the result.