I have a 1998 150 Mercury EFI. Some times when I turn the key on (engine cold) the warning buzzer will come on and stay on. Sometimes it will beep 3 times and go off as it should. Yesterday everything seemed fine. We took about a half hour ride and stopped and swam for a half hour or so. When I started the motor the buzzer was on and stayed on. We took the boat out and back home. After sitting an hour or so it was back to normal. Any ideas?
