Cascadia antilock braking activates way too much

Discussion in 'Freightliner Forum' started by slow.rider, May 31, 2021.

  1. slow.rider

    slow.rider Road Train Member

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    13 Cascadia, getting antilock during any braking stronger than gentle brake-assisted deceleration. Sounds and feels like it might only be coming from the passenger steer. Any ideas?
     
    Last edited: May 31, 2021
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  3. Lucky12

    Lucky12 Medium Load Member

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    Could be ABS sensor failing, it's telling ABS system wheel has stopped turning, activating the ABS to get it rolling again. Probably the one on the passenger side, obv.
     
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  4. slow.rider

    slow.rider Road Train Member

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    Thanks. Is that a big deal to replace?
     
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  5. jason6541

    jason6541 Road Train Member

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    Honestly with brakes take it in and have abs system tested. They can run a test while truck in motion to see which
    Abs wheel speed sensor is not reading correctly, modulator valve may be hanging. Yes maybe a bit spendy for diagnosis. But guarantee cheaper than guessing and throwing parts at it. Could be effecting the traction control system as well.
     
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  6. slow.rider

    slow.rider Road Train Member

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    Thank you. I'd be interested in finding a place that could do that while I wait, as opposed to dropping it off at the crappy dealerships out here and waiting two weeks for them to touch it. What are my odds of finding such a place?
     
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  7. rbrtwbstr

    rbrtwbstr Road Train Member

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    Could you call ahead and make an appointment somewhere along your route?
     
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  8. slow.rider

    slow.rider Road Train Member

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    I could.
     
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  9. jason6541

    jason6541 Road Train Member

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    May want to check with T/A Petro not a great place but they should be able to run diag on ABS system
     
    Last edited: May 31, 2021
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  10. Old Man

    Old Man Road Train Member

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    Most have a laptop to plug in to the port.
     
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  11. Rideandrepair

    Rideandrepair Road Train Member

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    I don’t know about the new Trucks, but my old 2000 Shaker has a diagnosis switch on the ABS module, located under the bunk, behind passenger seat. Take cover off, turn ignition on, hold button a couple seconds and get the blink code from dash light. I’ve got a code list. What you should do first, before anything is open the hood, look for the wire leading to the sensor in back of the hub. Fronts are usually easily accessible. Push it in, make sure it’s bottomed our against the hubs tone ring, note if it moves. Might just have slipped out some, and is gapped too much. Easy fix. Loose bearings will make it happen again. Could also just be a rusted out sleeve that goes around the sensor to hold it in, easily changed especially on the front, without taking the wheel off. My right front was out too far a while back. Simply pushed it in. Problem solved. A month later seal blew out. I think it may have been seeping, and caused the sensor to slip out, before it blew. Not sure. Just something to look for.
     
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