I have no idea if you can simply swap the boxes over I can only tell you about my experiences and how I have fixed things with my own car.
I should imagine you would need the sensors which detect..
Temp. Humidity and pollution levels as the climate control option also includes an automatic air recirc and filtration system if the outside air is heavily polluted. Very useful if you get stuck behind a lorry or bus on a hot day..
Oh and many thanks for saying thanx ( tis appreciated )..
I encourage others to spend 10 mins with the digi cam if they have similar how to's.. Would make the site an invaluable but free resource..