Wow what a great response by all, thanks Guys. I never wanted to replace the whole unit, but was hoping just the LCD part was available.
Thanks to those that supplied links much appreciated, I think I'll go with
Porsche Climate Control LCD Repair Kit | ModuleMaster
I found another firm in Germany that claim they are the genuine suppliers of the part to Porsche, however their price is a bout double to modulemaster.
Again thanks so much for you help everyone and your reassurances that it can be done.
