2003 Monaco Windsor low air alarm problem

[mark1965]

Originally Posted by mark1965

Have same problem last year. Simple fix

I have the same year and model your break valve is next to your left elbow underneath that valve are the airlines and a screw in switch with a wire plug you can take it apart to get the numbers off the plug very easy to find at most large auto parts for trucks

[Jchemie]

Have the same issue with my “alarm”. Very low chirping noise, gets loud, goes low after a few miles. Air pressue remains constant per new gauge I installed recently. A shop in Albequerque where I stopped at to inquire about it said the annuciator box just to the left of the steering column under the dash will act up and squak, replace it was the answer. Of course I disconecred it to drive home in peace for several hours. Also, it went off loudly when my altenator started to fail. Quit chirpping after I fixed the altenator, but many miles later it was up to it’s old tricks.

[Ttinuse]

I replaced the parking brake pressure switch and the problem appears to be fixed.

Thanks all for the great advice!