Select your product to confirm this information applies to you
Autopilot Overshoot
When the autopilot overshoots a target it's typically a sign that the Counter Rudder Gain is set too low. To improve, increase the High Speed or Low Speed Counter Rudder Gain (depending on the boat speed at which the overshoot occurs). The Garmin Helm Control (GHC™ autopilot controller) will need to be put into Dealer Mode before accessing Autopilot Tuning for the rudder gain settings. If the vessel a compatible Garmin chartplotter these settings can also be made from within the Autopilot settings on the chartplotter.
Dealer Mode
From the GHC™ 20 autopilot controller: Press Menu > Setup > System Information > Press and hold the center soft key until Dealer Mode displays, press the back button twice.
The GHC™ 50 autopilot controller has Autopilot Setup and does not require extra steps to access Dealer Mode.
Autopilot Gain Settings
On GHC
From the GHC™ 20 autopilot controller: Enable dealer mode (see above directions) Select Dealer Autopilot setup > Autopilot tuning > Rudder gains > Adjust the Gains and or the Counter Gains as needed.
From the GHC™ 50 autopilot controller: From the main screen, press the three dots > Autopilot Setup > Autopilot Installation, press OK to the caution message > Autopilot Tuning > Adjust the Gains and or the Counter Gains as needed.
Note starting numbers. It is recommended that changes be made in small increments.
On Chartplotter
From current GPSMAP® chartplotters1 select Options > Settings > My Vessel > Autopilot Installation Setup > Autopilot tuning > Rudder Gains.
Adjust the Gains and or Counter Gains as needed.
Note starting numbers. It is recommended that changes be made in small increments.
For information on how to Adjust the Autopilot Gain Settings, refer to the Configuration Manual, see Finding the Owner's Manual for a Garmin Device
1 Legacy chartplotters directions are different see the Configuration manual for specific steps.