I'm no expert on the electrikerized Jeeps but having read of similar issues and 'cures' I would suggest the following.
Central locking and windows - disconnect the battery for 5 mins and then reconnect. That should reset the control modules and sort it out. Failing that, the modules might need 'flashing' by the dealer to update the software.
Heater Blowing cold - sounds like the blend doors have failed. There are kits available to repair them.
Like I said, i'm no expert on this type of vehicle but those are the common answers to your faults.
If i'm wrong, i'm sure those that know better will correct me
