system fault warning

Our Systems Monitor will occasionally beep for an instant at speeds under 10mph. When cruising at planing speed we will hear a frequent alarm that only lasts an instant. When we tried to see what the alarm was it required we record a video of the displayed message and then go through the video...

Was boating in my 26 foot Sea Ray last week on the Eastern Chesapeake, when I received a system fault warning that the Mercruiser 300 inboard/outboard was overheating. I turned off the engine and called a tow back to my dock. There, I was able to motor the boat onto the lift. What might be...