Rollover protection came on while DRIVING DEAD STRAIGHT

Discussion in 'Freightliner Forum' started by PermanentTourist, Oct 11, 2021.

  1. PermanentTourist

    PermanentTourist Medium Load Member

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    2016 Cascadia, driving on like the country's straightest road, I-94 in North Dakota. 68mph, no wind. Suddenly start screaming about rollover protection and hitting the brake real hard. Super weird.

    I pulled over and turned it off and on, and it seems to be fine since then.

    But still, it made me nervous and I want to be ready. Clearly a sensor is going bad? Where are the sensors located? Is there a way to disable them?

    And how does this system work in general? Does it just measure lateral g-forces or does it monitor the air bag compression or something like that?
     
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  3. Snow Hater

    Snow Hater Medium Load Member

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    Mine used to tell me I was having an accident while driving under an overpass.

    I'll never drive another Freightshaker. I'll stick with my Pete until I retire.
     
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  4. PermanentTourist

    PermanentTourist Medium Load Member

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    I think that's a different system, that's a forward radar misfiring briefly. Happens once in a great while, but at least it doesn't slam on the brakes, unlike when it senses a tumbleweed.

    Besides, modern Peterbilts have as much electronic safety crap as in any other truck. Maybe somehow it works better?
     
  5. Snow Hater

    Snow Hater Medium Load Member

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    Mine has nothing on it. 389 plain Jane no safety crap. Love it.
     
  6. PermanentTourist

    PermanentTourist Medium Load Member

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    Well hey, to each their own. Enjoy the aerodynamics of a brick and 5.5 MPG.
     
  7. Snow Hater

    Snow Hater Medium Load Member

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    Yep. Somehow I don't think mileage is an issue. Usually hauling around 43k lbs every time I'm out and running over 2k miles per run. First time I saw "my truck" it put a smile on my face. It's nice being treated like an adult not being forced to drive with all that safety equipment jerking the wheel or slamming on the brakes. Like you say, to each their own.
     
  8. PermanentTourist

    PermanentTourist Medium Load Member

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    Fair enough. You get joy out of driving a classic looking piece of machinery, and I must admit they are nice looking trucks.

    But for me, and I kind of hate to admit it, but I don't really care about trucks. I own one, and I like driving it and exploring the country, and I certainly like the owner op $$$, but I don't really care what it looks like as long as it gets me the most money in the most efficient way and keeps me comfortable. I would gladly drive a bright pink truck that is shaped like a literal butt if it got 15 MPG and only broke down once every 10 years.

    And yes, all the electronic safety crap is annoying. I wish they stopped at ABS.
     
    Last edited: Oct 11, 2021
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  9. mjv2744

    mjv2744 Bobtail Member

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    I had a car do that. It was a yaw rate sensor. See if you have one. This particular car it was under the cup holder and the drinks sweating made it get wet and go bad.
     
    PermanentTourist Thanks this.
  10. supersnackbar

    supersnackbar Road Train Member

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    It's your ABS brake sensors on a drive axle. They measure tire rotation and calculate how fast your going, and how fast your cornering based on the different speeds the inside and outside tires are rotating...if it got a misread on a sensor then it thought you were going around a corner at 68. I had a Cascadia that would do the same thing on really bumpy roads with an empty trailer where the bumps weren't parallel when my tires would be hitting them unevenly.
     
    Mototom and PermanentTourist Thank this.
  11. MGE Dawn

    MGE Dawn Road Train Member

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    I had an identical truck do that to me... it probably sensed its own shadow and panicked. ~'16 Cascadias were notorious for doing that at the company I was driving for at the time. Luckily, dropping the hammer overrides the CMS system in those trucks, sooo...
     
    PermanentTourist Thanks this.
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