Recently, the alarm / buzzer representing the 'engine hot' warning on my 923a1 started going on in short tones / flashes. Some seem to be longer tones than others. Sounds like Morse code. It doesn't start this until temp reaches normal operating temp range. I checked the coolant level... fine. The temp gauge is within the 185'-190' range depending on outside temp and load. Curious to know if anyone else has had this issue... and if so, what solutions where found to correct it. I've had the truck for two months with no issues until recently. Thanks for the help!