2016 prius c, weird noise

Discussion in 'Prius c Care, Maintenance and Troubleshooting' started by Hunter21, Oct 31, 2019.

  1. Hunter21

    Hunter21 New Member

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    First time hybrid owner here, I went out for a drive tonight and it has been raining out, I noticed a weird noise coming from the car. Only would happen when foot was off the gas and brake and driving straight, when I hit the gas or applied the brake or turn the wheel it would go away, put a video up so you can hear it, I hope its normal:(.

     
  2. PriusCamper

    PriusCamper Senior Member

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    It must be weird noise day on Prius Chat? What the heck? You're going to need to be more descriptive. I didn't hear anything weird in the video at all...
     
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  3. Hunter21

    Hunter21 New Member

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    Sorry I forgot to mention it I thought I did, it sounds like you're ratcheting a ranch.
     
  4. bisco

    bisco cookie crumbler

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    yep. nope.
     
  5. PriusCamper

    PriusCamper Senior Member

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    Boo! As in Happy Halloween Everybody!
     
  6. dig4dirt

    dig4dirt MoonGlow

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    rusty rotors

    Stomp hard on the breaks a few times while stopping.
    Or if you can do it safely, put car in neutral and apply brakes for a stop or two

    Happens on most Prii
     
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  7. Hunter21

    Hunter21 New Member

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    But why only when going straight and no acceleration or breaking?
     
  8. dig4dirt

    dig4dirt MoonGlow

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    I was sticking to the basics without going into detail....did you try it?
     
  9. Hunter21

    Hunter21 New Member

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    Not yet I wont be able till tonight after i get out of work
     
  10. dig4dirt

    dig4dirt MoonGlow

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    The toyota hybrids use regen braking moreso then the actual brake pads.
    With humidity and rain, the rotors are prone (for some reason) to actually get surface rust.
    If you do not brake hard enough, the rust will not go away and perhaps the pads are faintly rubbing on the rotors and rust.
    After a hard braking or the neutral drop lol, this can remove the light rust covering.

    Assuming it is coming from the front disc's (since I think the '16c has drums on the rear)
    Then quite possible when you are turning the rotors are moving a bit? have you checked to see if lug nuts are tight?

    Or perhaps if you live in a very humid area (or not) or whatever, the caliper pins may be rusted or seized,
    they may need lubed, so the pads are perhaps not retracting correctly.

    just rambling.
    But both my Prius have this "rubbing" from rust issue, along with a few others i've read on this forum
    A quick "brake check" by stomping hard on brake to slow down can remedy the rubbing noise

    But you can also dive into a thorough check on your brake systems to make sure.
    Again, double check your lug nuts
     
  11. Hunter21

    Hunter21 New Member

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    The lug nuts are tight to 80 ft lbs. I tried to take the wheels off to change out to winter tires and the rims would not come off, have to get a shop to do it (not done yet) and a sticky noise comes from the headliner too on the driver side, which I have to look at or have the dealer look at. I'll try slamming on the brakes tonight on neutral. I already had the engine misfire figured out, due to not letting the engine do the warmup cycle before shutting it off, first hybrid mistake, but not a big deal.
     
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  12. dig4dirt

    dig4dirt MoonGlow

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    gotcha.

    Yeah you might need a rubber mallet to strike the inner tire to get it off.
    I had to do that I think to all 4 of one of mine.
    I then coated the contact area with anti seize, to hopefully not have to deal with that again.
    But the rubber mallet worked for me.

    Yeah the rough start is a very common problem. I have had it happen on my Gen3
    I dont think my C has ever done it...though I cant rememb for sure.
     
  13. Hunter21

    Hunter21 New Member

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    Tried the rubber mallet to no avail, even tried loosing the lug nuts and dropping it and driving it a bit, still wouldn't budge. Only had the rough start after moving the car down the driveway, have the engine start and shut it off right away, next start up was rough. But I'll let you know if slamming the breaks helps, and hopefully the rain will stop tonight when I get out
     
  14. Leadfoot J. McCoalroller

    Leadfoot J. McCoalroller Senior Member

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    Use the loose tire as a battering ram to get the stuck one off. It’s heavy enough that if you hit tire-to-tire, it’ll usually work in 3 tries or less, no risk to paint or lug threads.

    If you do wind up using a hammer, put the lug nuts back on (just a few turns) to protect the stud threads from a badly aimed hammer.
     
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  15. bisco

    bisco cookie crumbler

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    usually, loosening the lugs, jacking it up and letting it down gets mine off
     
  16. PriusCamper

    PriusCamper Senior Member

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    If you take all the wheel nuts off and can't get the rim off the trick is to grab the spare tire or a different wheel and swing it into the one that's stuck as rubber on rubber as hard as you safely can, that's more than enough force to break it loose.
     
  17. pulltab

    pulltab Junior Member

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    I had that happen to me... If you are still getting that noise...try to listen what tire it is and REMOVE THE HUBCAP and drive it again listening... I found out that sometimes it rubs against something on the wheel/plastic... The fix was just snapping in the hubcap "askewed" and the noise went away.
     
  18. Hunter21

    Hunter21 New Member

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    Wasn't that, hubcaps were already off . But when it dry up outside the noise did go right away, the mechanic at the dealership did say the dust shield was closer that it should've been to the rotor so he bent it back, so far it hasn't happened since
     
  19. bisco

    bisco cookie crumbler

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    must have been something. you'll know next time it rains
     
  20. Hunter21

    Hunter21 New Member

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    A kind of rained one of the nights I took it out after I brought it to the dealer didn't hear anything but it wasn't as wet outside as the 1st time I heard it, But unfortunately we're due for snow soon so will see then
     
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