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2021 Cascadia Low Air Buzzer

Discussion in 'Freightliner Forum' started by MGE Dawn, May 8, 2022.

  1. May 8, 2022 #1
    MGE Dawn

    MGE Dawn Road Train Member

    1,074
    2,261
    May 19, 2019
    Vancouver, WA
    0
    Good afternoon, folks. Got some bad instrumentation going on causing my low air warning to get stuck on while I'm driving. Both tanks are and have been between 105 and 130 psi the whole time.

    Looking to find out where the fuse for the buzzer is so I can have some peace and quiet between here and a shop.

    Thanks
     
    MGE Dawn, May 8, 2022
    MGE Dawn, May 8, 2022
    #1
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  3. May 8, 2022 #2
    blairandgretchen

    blairandgretchen Road Train Member

    12,048
    60,658
    Dec 9, 2011
    South west Missouri
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    Well hey there stranger.

    can help you with a 1995 - but . . .

    Have to find that low air pressure switch on an aluminum manifold down by your tootsies and replace it, at a guess.
     
    blairandgretchen, May 8, 2022
    blairandgretchen, May 8, 2022
    #2
    MGE Dawn Thanks this.
  4. May 9, 2022 #4
    rcoy

    rcoy Bobtail Member

    2
    1
    Jan 26, 2020
    0
    There is an air switch behind a panel next to the accelerator pedal. Behind the panel there are a bunch of air switches. I think the one you want has a green wire, pull the connector and jumper it with a paper clip or something. Several torx screws holding the panel on.
     
    rcoy, May 9, 2022
    rcoy, May 9, 2022
    #4
  5. Jul 2, 2022 #4
    armo

    armo Light Load Member

    274
    289
    Jun 16, 2022
    0
    there is no fuse for it. there is an air switch and single sam module...
     
    armo, Jul 2, 2022
    armo, Jul 2, 2022
    #4
  7. Jul 3, 2022 #5
    MGE Dawn

    MGE Dawn Road Train Member

    1,074
    2,261
    May 19, 2019
    Vancouver, WA
    0
    Right. So. Forgot to update this.

    3 air switches on a 21 Cascadia... 1 primary, 2 secondaries. Company paid to replace all three, instrumentation continued. Truck went to dealership, I was sent to recover my original truck that went to a different dealership for a blown fuel pump, and then a month and a half later, the company and I went our separate ways for reasons completely unrelated. Never did find out the root cause, don't really care anymore.

    Thank y'all for the help!
     
    MGE Dawn, Jul 3, 2022
    MGE Dawn, Jul 3, 2022
    #5
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