Hi i got a 2008 prefacelift 8pa 1.9 a3.

I installed a new wiper stalk to control trip computer. got the rite part numbers

followed this guide Ambient Temperature Display

now my wiper still works but the controls for the trip dont work and neither does the controls to vary the wiper speed slightly (the switch that faces u).

Is there coding issues? i did activate the trip on vcds already