I hope someone can help me because at the moment my car isn't going anywhere.

I have a 2008 Ford Territory May 08 (sorry do not know model number, nothing written on the door)

The problem is a few months ago the computer started going funny the aircon was constantly on could not turn it off, the fan will not turn off, cannot use any of the controls or radio.

We've tried resetting battery etc, now the radio wants a code and I cannot find this mysterious code on any of my cars paperwork. What exactly can be done to fix this, being right on Christmas I can't afford an auto electrician. Is there any way I can somehow fix this myself? TIA
And my husband has just informed me that none of the buttons are working so we can't even input the code if we find it.

The radio does NOT have a code that you need to enter it is linked to the system when it is programmed via a scan tool.
Check that your reverse lights work, and recheck all fuses .you may have a fault in the icc unit itself and or the him module,have you had the icc out.
suggest you have vehicle scanned for fault codes.