Dreaded GFC 500 problem

[Glen Davis]

While doing the before flight checklist the AP button on the GFC 500 would not make the AP engage. The light above the AP button would not eliminate.  The errors in the attached photo displayed.  Tried turning it off many times. Tried pulling the circuit breaker, then resetting it many times. Tried turning off the avionics and then turning it back on many times. None of that worked. Has anyone had this error message and how did you rectify it?

[Z W]

I have had it.  It was fixed by taking it back to the dealer and having Garmin replace all the servos under warranty. They had some problems with the early serial number servos but have made it right for us.

Good luck.