2023 Peterbilt 579 heater blowing cold air.

Discussion in 'Peterbilt Forum' started by bentstrider83, Feb 27, 2025.

  1. Long FLD

    Long FLD Road Train Member

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    Everything is pretty much controlled by computers now. I don’t know how often your truck sees a dealership but when you’re there it never hurts to ask them if there are any updates for your cab modules.
     
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  3. Concorde

    Concorde Road Train Member

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    I take it you don’t have a simple battery disconnect switch.. Hope it wasn’t a pain getting to the batteries.
     
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  4. bentstrider83

    bentstrider83 Road Train Member

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    I don't think there is in here. If there is, I'll have to hunt around for it.
     
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  5. Concorde

    Concorde Road Train Member

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    Mine is just outside the battery box/step. It’s actually visible, definitely not a security feature.
     
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