Autopilot steers to port when engaged in AUTO mode

[Chuck - Raymarine - Moderator]

Frank,

Our Repair Technician has recommended that the autopilot be reset and that a full dockside and sea trial calibration then be performed as the next step in correcting the reported issue. The manual for the ST4000+ may be found here. Resetting the autopilot would be accomplished by configuring the autopilot's settings to their default values via the autopilot's Dealer Calibration Mode (see Section 5.2 of the ST4000+ manual). Dockside procedures and sea trial are covered in Chapter 7 - Post Installation Procedures of the ST4000+ manual.