Lonestar 2015 voltmeter 6 o'clock!!!! Help please!

Discussion in 'International Forum' started by shef777, Apr 6, 2023.

  1. shef777

    shef777 Bobtail Member

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    Jan 30, 2018
    0
    Hello, I’ve got an issue with 2015 international lonestar with isx15 on it. Recently found some weird activity while truck parked it loses some partial voltage output, like headlight, mark light, stop and turn lights. Also voltage in the cab goes off. But some light like dashboard, and switches illuminate lights still works ok. As soon as I get back to interstate within 10-15 miles all lights comes back again. I know it sound crazy but it’s what it is. After my own research checked body controller and updated firmware version from 190 to 398 at official dealership. While truck was in the shop everything works nice, with ELD and scan gage out plugged, right after I left the shop problems came back again. I know some additional accessories might somehow affect it, but question it why it happens now? I installed those at least two years ago….
    I’d be really appreciate if you can give me some idea what it could be and how to solve it?
    Thank you ..!
     
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  3. Heavyd

    Heavyd Road Train Member

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    6,264
    Feb 4, 2009
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    Are you getting a "load shedding" message in the cluster when this happens? When you had the truck at the shop for the update, did they scan for codes?
     
  4. Aristo Truck Tech

    Aristo Truck Tech Bobtail Member

    1
    1
    Apr 19, 2023
    0
    If you're experiencing voltage output issues with your 2015 International Lonestar with ISX15, there are several possible causes to consider. A failing battery or alternator could be the culprit, so it's important to have a mechanic test these components. Another potential cause is a loose or damaged wire in the electrical system, which can be inspected and repaired by a mechanic. Additionally, the body controller may be malfunctioning and causing voltage output issues, so it may be worth having a professional inspect and potentially replace this component. Lastly, aftermarket accessories could be drawing too much power and causing voltage output issues, so try disconnecting them and seeing if the problem persists. If you have any code readings please post them.
     
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