OK, so I've already replaced the heater control valve with a new part, but I'm still only getting hot air coming through. So th next step is the control panel on the dashboard. My question is... do I have to use the "four button / six air direction dial" control panel, or can I use the (much...

I have a 2007 Mk3 ST TDCI. Brief history of the car since owning: Aircon working when bought car back in May 2013 EGR valve replaced under warranty (battery was disconnected) New battery replaced under warranty as bad cell in one supplied with car causing quite a few DTCs - all fine with new...