Auto Pilot Not Functioning After Update to 15.59

[Steve - Raymarine - Moderator]

This sounds like the heading sensor loosing the deviation for the heading. You can look at this by pressing Menu>Setup>Diagnostics>About Display> then scroll to the bottom of the page where deviation is reported, if the number is dashes follow the description below.

The new Evolution autopilot system does not have a specific Seatrial calibration, you are to do the Dockside Wizard, then take the boat out for a 15-20 minute cruise, doing a few circles and figure 8's to show the system all the points on the compass rose, keeping the speed between 3-15 knots. While out on the water, press Menu>Setup>Diagnostics>About Pilot, scroll to the very bottom of the page to look at the Deviation. If it is within 15 degrees, you are done. Restart compass is used to drop the Deviation in the system and have the heading sensor start over calibrating the Deviation, shouldn't be used unless you are relocating the EV-1 heading sensor. Compass Lock, is to lock the heading sensor to the current Deviation in the unit, I would recommend that you lock the compass once you have the autopilot functioning the way you want it, usually after a couple of trips where you use the autopilot and it is functioning properly, because the heading sensor is always learning, trying to get a better deviation on the heading and learning the movement of the vessel for better course correction. Once you Lock Compass it stops the learning process and holds the settings that it has for the vessel.