2004 Bounder 39Z, yesterday no problems. Today started unit front air gauge reads normal, rear air gauge reads the needle is all the way to the right. The low air alarm is goin off and will not stop. The brakes release and the unit will move??????
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OK , the air brake alarm and false gauge reading are a common issue on 99/03 Freightliner chassis , with an internal " cold solder " problem on the air sensors, that are located in the VDC ( Vehicle Data Computer ).
Have you seen a Freightliner chassis data decal in your coach , that gives the chassis production date ( as in photo below ) .
If your chassis is a 2003 then the PDF below will detail the repair.
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.