Climate Control System

I have an '04 TB with 3600 miles. Recently the climate control system will go on by itself. I had it to the deal twicw and I am taking it back Monday for a third time. The system was off and the OAT was 50. I am driving along and all of a sudden I see that the OAT chages to driver/passenger temperature setting and the system goes on. The dealer said that they called GM and they told them to recalibrate the system. This was Tuesday. then Yesterday which was Wednesday the system went on by itself five times. the forth and fith time it went on I had the service tech on the phone with me while it happened. Has anyone experienced a simulair problem?