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Thread: MM3 and sub zero temps

  1. Top Of Page | #1

    MM3 and sub zero temps

    So I live in an area with A LOT of sub zero temps for 3.5 months.

    The truck is outside for days in remote areas at times off grid, (not plugged in)but usually in the garage on work days.

    I watched DRDs 2017 video on settings and low voltage issues, but I would rather simply remove the monitor during extreme conditions and not worry about it in remote areas.

    I'm talking negative temps -25 or worse at night, not balmy +20, so voltage will drop seriously and might need jumper cables.

    Can I simply unplug and remove the monitor and put it in warm storage and not change any settings, then use it again in warmer conditions?I

    I miss the old trucks in these the new ones otherwise. LOL.

    Thanks for the advise.

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  3. Top Of Page | #2

    Re: MM3 and sub zero temps

    Yes you can.

    No issues at all.

    I only plug mine in to change the tune about 2 times a year.

    Sent from my iPhone using Tapatalk Pro

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  5. Top Of Page | #3
    bajaben's Avatar

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    Re: MM3 and sub zero temps

    When I leave on long trips for work and the truck just sits I will unplug the MM3 from the OBD2 plug.

    This way I am not drawing any power over a long period of time.

    When I get back, I just plug it back in and start the truck right up, no issues at all.

    Also, I live in Alaska so I understand the struggle with the cold temps.

    The Grid heater is tough on the batteries.

    Letting the truck warm up to around 125 before changing any settings on them MM3 is good practice.

    Sent from my SM-G930V using Tapatalk

    2014 Larime Longhorn. Soon to be deleted and tuned.

  6. Top Of Page | #4
    DRD's Avatar

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    Re: MM3 and sub zero temps

    Yes just simply unplug the OBD cable as mentioned above.

    That reduce any current draw from the canbus.

    The truck will run just fine with the tuner unplugged.

    Double R Diesel

    The Cummins Whisperer! John 3:16, Romans 10:9-10...Tuning for the Heart and Soul.

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