Pete 579. How to make drivers window work with key in acc?

Discussion in 'Peterbilt Forum' started by Bad Monkey, Sep 16, 2021.

  1. Bad Monkey

    Bad Monkey Medium Load Member

    Jul 18, 2012
    Goshen, IN
    Hey guys, 2015 579 that the drivers window won’t roll up and down with the key is in acc which is annoying when parked with my cab heater on since it will shut off when key is turned on. Is there a setting in the ecm that can be changed? I tried to Hotwire the switch but pulled the window switch off and was getting power with key on or off. Does the switch control the ground circuit? Thanks
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