Converting from manual to automatic would require ripping out the dash, and replacing the wiring harness. In addition, there is a temperature sensor in the dash next to the steering wheel, an ambient temperature sensor located in the front bumper, and a sun sensor in the middle of the dashboard at the base of the windshield.

Installing these 3 sensors/harness and getting them to work properly could be done, but it would take a lot of time, effort, and more money than it's worth.