XF 2103 - Heating and A/C act weirdly

[apono]

Got it last month with a very low milleage, which is the reason I still want to keep it even though the aircon / heating do not work. It just keeps blowing air from outside but no matter what temp you set, it will just blow outside temperature. The dealer claims he had it checked with 2 jag specialists but nobody was able to find what the problem would be (how can this be possible I am wondering? )

They bought a new heating control unit and checked it and no difference. Also they replaced 3 motors to new ones (which only made all the fans to blow. They were randomly stopping. Now all fans are working, but the temeperature adjustment isn't working. Before the replacement of the motors, I had the cold air blowing 1 time only at random time. 

Ayone having any idea what would it be?
 

[apono]

Typo in the title. I meant - XF 2013