Rear airbag dump

Discussion in 'Experienced Truckers' Advice' started by The Wiz, Aug 3, 2020.

  1. The Wiz

    The Wiz Bobtail Member

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    Has anyone heard of this problem ? I have a 2016 Kenworth t680, when I dump the air out of the rear bags it will not reinflate after the toggle is switched back. I have already installed a new rear level/dump switch. If I turn off the ignition and wait for several minutes before turning the truck on again, it will then reinflate the rear airbags ...???
     
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  3. 062

    062 Road Train Member

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  4. Dockbumper

    Dockbumper Medium Load Member

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    If switching the ignition off then back on "fixes" it. It could be a relay. I think there are about 2,000,000 of them on these newer trucks! Good luck
     
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  5. The Wiz

    The Wiz Bobtail Member

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    Yes, 2,000,000 sounds about right. Thxs
     
  6. The Wiz

    The Wiz Bobtail Member

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    Just an update on my old question. What the dealer finally found out, was on the last software update the truck body ecm was wiped and running on a default program.
    Found this because I was stopped at a Canadian MTO scale and was informed that my daytime running lights were not working. Once the proper program was activated the daytime running lights, side signal lights, and suspension dump started working. I spent so much time and $ trying to find the problem only to find a software glitch !!!
    Now I am afraid to ask the dealer to do something about the idle shutdown !!!
     
  7. AModelCat

    AModelCat Road Train Member

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    Ah so the new guy forgot to turn the applicable parameters back on after an update I guess?
     
    The Wiz Thanks this.
  8. The Wiz

    The Wiz Bobtail Member

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  9. The Wiz

    The Wiz Bobtail Member

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    Yes, I think that you are correct!!
     
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