One problem related to air conditioner has been reported for the 2014 Tesla Model S. The most recently reported issues are listed below.
The media control unit (touch screen system in Tesla used to control many components of the car is leaking a liquid, and has made it very difficult to make changes as the touch sensitivity was impacted). The media control unit is used to control the locking/unlocking of doors and trunk, the air conditioner, the vehicle's charging port, etc.