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Loss of dash lights..

Discussion in 'Peterbilt Forum' started by drvrtech77, Sep 28, 2020.

  1. Sep 28, 2020 #1
    drvrtech77

    drvrtech77 Road Train Member

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    Dash lights on instrument cluster are out but all the dash lights on a/c control are on and steering wheel controls are on as well.. 2018 579..what could be the issue??
     
    drvrtech77, Sep 28, 2020
    drvrtech77, Sep 28, 2020
    #1
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  3. Sep 28, 2020 #2
    QUALITYTRUCK

    QUALITYTRUCK Road Train Member

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    romulus,mi
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    Try removing + battery cables for about 10 minutes or so to reboot CECU module.
     
    QUALITYTRUCK, Sep 28, 2020
    QUALITYTRUCK, Sep 28, 2020
    #2
    spsauerland, pushbroom and drvrtech77 Thank this.
  4. Sep 28, 2020 #3
    Dna Mach

    Dna Mach Road Train Member

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    Texas
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    Very common issue with Petes. Shut the truck off and let it go through its shutdown routine. As soon as you hear the transmission click it’s done. When you turn the key back on your dash lights should be operational. Never understood why they do this but every Pete I’ve ever driven does this.

    On my ‘19 579 the AC does this too which is a first for me. Driving down the road, click on the AC.....and it blows warm. Shut the truck off, restart and it’s ice cold again. Doesn’t happen often though. These new vehicles are so computerized there’s no telling what’s going on in there.
     
    Dna Mach, Sep 28, 2020
    Dna Mach, Sep 28, 2020
    #3
    D.Tibbitt Thanks this.
  5. Sep 29, 2020 #4
    drvrtech77

    drvrtech77 Road Train Member

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    Mar 20, 2010
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    Just tried that and they are back on..
     
    drvrtech77, Sep 29, 2020
    drvrtech77, Sep 29, 2020
    #4
    blairandgretchen, Dna Mach and D.Tibbitt Thank this.
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