if move it up and down they just come on ?
No mate, if you look at the end of your wiper stalk, you'll have an up and down button like below:
![](https://www.mk5golfgti.co.uk/forum/proxy.php?request=http%3A%2F%2Fdaz.co%2Fmedia%2Fff106%2Fl60n%2FIMG_0479.jpg&hash=6a35ab0b0b87e13990cba3fa0bff4929b5c6de47)
This filters through the trip computer and readings that are available for your vehicle. I can't comment on the TDI but my GTI has
MPG Total
MPG Current
Temp
Total Miles
Drive time
Maybe a couple others I've forgot.