GFC 500 will not enter NAV mode for GPS track

I can’t get NAV mode to work for a GPS track. It will work when tracking to a VOR. This used to work, but I’m new to the setup so may be something simple I’m doing wrong. HDG and TRK mode works just fine. Can anyone see what I’m doing wrong? Thanks

  • Hi Bryan! Thank you for being patient while we upgrade our forums. Excellent job providing photos! After reviewing your photos, I noticed your GFC 500 does not indicate AP is on nor NAV mode being selected. This could definitely result in your autopilot not functioning as you're expecting it to. Try doing so the next time you fly, and if the issue is still present, please contact your installer of the autopilot for further troubleshooting, as it might require some further examination.