Need some help tackling a rear ABS wheel speed wiring harness replacement.

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by h1ph0panonymous, Aug 4, 2025 at 8:33 PM.

  1. h1ph0panonymous

    h1ph0panonymous Member

    Joined:
    Oct 9, 2023
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    Location:
    Minnesota
    Vehicle:
    2014 Prius
    Model:
    Four
    I have an idea where the rest of the wire leads to through the wheel well (into the trunk in the corners like where battery sits) but the rears don’t have a wheel well cowl on my model and year? It’s plastered with some sort of rubber material and even more where the wiring harness goes through the wheel well. Do I cut through it with something (what exactly do I use to open or cut it open or not?) to get the new wiring harness in to plug it up to the ECU bus in the trunk but most importantly what exactly is that rubber material? (So I can replicate the plaster and patch with that same rubber like weather sealing material)
     
    #1 h1ph0panonymous, Aug 4, 2025 at 8:33 PM
  2. PriusCamper

    PriusCamper Senior Member

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    Mar 3, 2012
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    Location:
    Pacific Northwest, USA
    Vehicle:
    2007 Prius
    Model:
    Two
    That sounds about right... Other thing you can do is look at as many images of that part that you can find online and confirm if it always comes with plug attached and not just bare wires and that will confirm that cutting through that material and then sealing it back up is the proper way to do it. Of course you could upgrade by replacing a portion of that material with a grommet.
     
    #2 PriusCamper, Aug 4, 2025 at 10:37 PM
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