Just to give you an update, booked my car into a garage as they had a camera on a probe to see if they could resolve the problem with heat coming out of passenger side but not on drivers side. Their only conclusion was that one of the flaps was stuck (although kind of knew that anyway
) and that the repair would be uneconomical as the dash would need to be removed.
If anyone has any ideas of perhaps a garage in the Essex area who are better capable of tackling this kind of problem, please let me know. Would be happy to travel further as long as they only need it for one day.
I had similar problem, on a 2006 2.0DCi Privilege, only difference was the driver side was warm, passenger was cold.
After reading various threads on here, I found a fitter willing to look at the control panel (there is a thread regarding dodgy wiring in the control unit)
He took it apart for me, and found no dodgy connections, but wires had actually been rubbing on the circuit board and damaged it, he did a solder repair, and all works fine.. charge, he asked me for a crate of beer (that's how quick the job was !!)
If you can't find a fitter that is happy with that kind of work, maybe find a replacement control unit from a scrappy, guess it would be a few quid, and if it doesn't fix it, at least you have tried
BTW: Hi all, this is my first post here (i think) although I've owned lagunas since 2000 (I'm a lurker)