A.C. & dash control panel

The control panel is really just a complex switch, which means that it sends a signal to turn on the compressor. This signal is sent to the Engine Control Module which then determines if the compressor should be turned on. If the technician has checked and found that the control panel is not sending the proper signal to turn on the compressor, then I would say it's OK to replace it. However, I'm not sure they have checked this as thoroughly as they should. Ask how they verified the control head is defective, if they don't sound sure of themselves, don't replace anything and have another shop look at this, I suggest the Dealer, they probably see this often and know what to look for.