I think it’s a fuse, but I’m not sure.

Discussion in 'Gen 3 Prius Care, Maintenance & Troubleshooting' started by ShihFa, Jun 7, 2026 at 11:42 PM.

  1. ShihFa

    ShihFa Junior Member

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    Hello all,

    These are the symptoms:

    1. The daytime running lights turn on intermittently when I turn the headlight switch to that option.

    2. The non-driver side windshield washer nozzle does not work, and I’ve already tried to declog it to see if that was the issue. And it was not. The driver side works just fine.

    2a. When I pulled out the fuse that is connected to the windshield washer motor, some white dust came out. And there was white dust on the fuse. I could not tell if the fuse was still intact.

    3. Now, the rear windshield washer nozzle doesn’t work either.

    Do you all think all these things are related to the same issue? What do you all think my next step(s) should be to troubleshoot this issue?

    Thank you and regards,
     
    #1 ShihFa, Jun 7, 2026 at 11:42 PM
  2. ASRDogman

    ASRDogman Senior Member

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    #1: I believe that is what is supposed to happen.
    #2 & 2a: Since the drivers side works, it's obviously not the motor.
    Either the hose is cracked, or the "splitter" is clogged, and/or nozzle
    The splitter is a common issue
    #3: Is the motor running for the rear washer? If it is, again, check for a clogged
    nozzle, or cracked hose.

    It is possible the motor is clogged up, even if it is running.
    Pull the hose off the 2 none working nozzle and see if the fluid is getting to them.


     
    #2 ASRDogman, Jun 8, 2026 at 6:44 AM
  3. ChapmanF

    ChapmanF Senior Member

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    In fairness, it's only obvious to someone who knows there's just one motor for the fronts.
     
    #3 ChapmanF, Jun 8, 2026 at 9:23 AM
  4. PriusCamper

    PriusCamper Senior Member

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    I know Gen2 has a motor for front windshield sprayer and a separate motor in same reservoir for the rear. Did they change that design in Gen3?
     
    #4 PriusCamper, Jun 8, 2026 at 7:06 PM
  5. ChapmanF

    ChapmanF Senior Member

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    I think it's the same in gen 3. So if I saw one front nozzle spraying, I would rule out a motor problem. But somebody who didn't know that might not.
     
    #5 ChapmanF, Jun 8, 2026 at 9:45 PM
    PriusCamper likes this.
  6. PriusCamper

    PriusCamper Senior Member

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    Yep, OP hasn't cleaned their clogged nozle holes enough yet. Needles work great and removing it from the hood makes it easier to be more thorough.
     
    #6 PriusCamper, Jun 8, 2026 at 10:49 PM
  7. ASRDogman

    ASRDogman Senior Member

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    Any update?
     
    #7 ASRDogman, Jun 9, 2026 at 12:40 AM
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