I’m not so sure an autopilot is actually installed in the virtual cockpit… the real-world Cessna 162 POH indicates that the autopilot power switch and the cover for the unit would be to the left of the PFD, where I see a panel cover but not a power switch:
If you’re seeing virtual buttons for the autopilot, this may be an artifact of using an old version of the Working Title G3X mod, which is unfortunately no longer supported?