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Topic: No low air alarm (Read 641 times) previous topic - next topic

No low air alarm

My coach does not have a working low air pressure alarm. I suspect the alarm is controlled by the blue box inside the dash which also provides input to the dash air gauges. I believe the blue box is no longer available.

Anybody have a simple fix for this?

Re: No low air alarm

Reply #1 –
Well Jeff  ----  If I was where you are, I would disconnect the air line coming into the "box" and add a "T" to which I would add a generic pressure switch of the proper range and pressure and connect the alarm to that switch.  If you have a schematic, you might check and see if there are other functions performed by that switch (probably not).  Have you done the "check bulbs and fuses, etc." trick?  Have a great day  ----  Fritz

Re: No low air alarm

Reply #2 –
I had one gauge that would not read over 70 on my 01.  They do not make the SW gauge any longer so I had a T put in and then ran a VDO mechanical gauge up to the dash. I had to leave the electronic one in to prevent the buzzer and level system light from going on but the gauges do not work so I rely on the new VDO ones. 
 

Re: No low air alarm

Reply #3 –
I think you guys are right - I'll "T" in a line and run it to a switch and new buzzer. The SW gauges do work still but it's only a matter of time before they get replaced with mechanical VDO gauges. Have to check further, but I think the original buzzer is kaput. I do still get a chime from "level on" but the chime for attempting to drive off with the parking brake on is MIA also - don't ask me how I know ;)