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Bad wheel bearing @ 30K

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by edthefox5, Oct 6, 2010.

  1. edthefox5

    edthefox5 Senior Member

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    Hello,

    At about 20k on my 07 I started hearing a faint whup whup whup between 35 and 50 mph's on the front driver's side area. At 60+ pretty quiet.
    It has gotten real loud at the present 30K. I suspected the tirers as I know the Integrities are complete junk but as a test I did a rotation and exact same noise.
    I thought thats not good but found it hard to believe soemthing else was bad as I had no vibration and no pull whatsoever in steering.

    Long story short I bought a new set of tires Kumho KR21's at stock size and oh crap exact same noise.

    Took it in as I'm under warranty to the dealer and it was a bad front drivers side wheel bearing. Weird as the car is babied, garaged, never driven in deep water, never top speed for any length of time.
    Only thing I noticed with the check drive I did with the mechanic was when your driving and steering quick hard left than right it would make louder whup noise when you turned left putting sudden more weight on the driver's side.

    Anyway hope this helps someone else's search for the elusive front end noises.

    BTW, the Kumho's are not bad at all. Super quiet and at stock 185 size feel like there putting down rubber twice as wide. What a difference having a good tire on this car. There cheap and not LRR tires so taking a good mileage hit maybe 3 mpg's but the cheap part is what I need right now. Lots of other things going on. Anyway $399 installed out the door @ Tire Kingdom. They beat Tire Rack.

    Also Clearwater Toyota did the bearing work and they did an amazing job. Didn't bust my chops on the 30K service. I said no across the board as I did it all myself and they said cool.
    Had to order parts and 24 hours later I drove a washed car off there lot that was fixed. Thats pretty impressive. No drama and no nickle and dime. All under 5/60,000 drivetrain warr. Very pleased.


    I highly recommend Clearwater Toyota. Clearwater, Florida.
     
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  2. FL_Prius_Driver

    FL_Prius_Driver Senior Member

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    Service=Yes, I've gotten better than average.
    Car Sales=Buyer Beware
     
  3. tochatihu

    tochatihu Senior Member

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    Hi Ed, this has certainly happened in early days for several NHW11 Prius including mine. Back in the day, we used to imagine that the bearings had somehow been damaged on the boat over from Japan. In other words, not necessarily your fault.
     
  4. 2009Prius

    2009Prius A Wimpy DIYer

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    That's an interesting theory. If I remember correctly one of the OP's struts had also gone bad and were replaced under warranty recently. (OP please confirm/correct) If so was the strut on the same side that needed replacement?
     
  5. tochatihu

    tochatihu Senior Member

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    More like an hypothesis. Having not spent time in groups discussing other (imported) cars, I cannot say whether wheel bearing failure counts are higher for cars that have been at sea.

    This is one of the many things that I suppose Toyota knows, but treats as proprietary information. Frustrating perhaps but they gotta make a buck too.
     
  6. Prius_Gnome

    Prius_Gnome Junior Member

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    I seem to have the same problem so I came to priuschat! It first started a few days ago.
    I have a 2007 Prius. It's just over 3 years old so no warranty. :( I hear the whup whup whup at lower speeds at under 30mph. It seems to come from the front driver side wheel. The whup whups speed up when I accelerate so I initially thought that something was physically hitting the wheel as it rotated. During my self-diagnosis, I went in reverse and the noise went away. When going forward, I don't hear the noise when I am traveling faster 30mph; I don't know if it's because other road noises drown out the whup whups. Do you think it's a bad wheel bearing?
    Kind of makes me wish I got the extended warranty from Troy for a thousand if this repair will cost a few hundred.
     
  7. supra90

    supra90 New Member

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    will it help if we pull our wheels and add new grease to the bearings ?
     
  8. edthefox5

    edthefox5 Senior Member

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    Yes my whup whup started very faintly around 25,000 miles. It was hard to detect if it was just one wheel and I discounted it to the world's worst tire the Integrities and figured I'd live with it till the tires wore out.

    But it got much worse and could hear that it waas coming from the front driver.

    I tried having tires balanced. Nope. Tried rotating tires and was very bummed out to still hear it at exact same level.

    Tires were getting pretty worn so got a new set and same noise.

    My symptoms were a little different then yours. Here's the exact symptoms for me:

    No whup till around 30 miles an hour.

    Stopped whupping at speeds above 60. Very quiet at speed.

    Also if you whip the wheel left or right while your driving the noise got worse if you whipped right. Which made sense since now alot more weight was on the driver side bearing all of a sudden.

    My car has had a very very easy life. Highly maintained. Not much high speed bonsai. Always garaged. Never swamped in rain.

    My dealer got the part in one day and now its perfect again.

    Have seen alot of wheel bearing failures on here but not alot at our mileage.

    And no the bearing race is not serviceable. Its a sealed hub.
    Not sure of hub cost.
     
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  9. edthefox5

    edthefox5 Senior Member

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    Agreeed. There sales rap made me very hesitant to bring the car back for service. But there service dept is pretty good. Have you seen there new shop out back since they remodeled?

    Its huge. Monster warehouse with great lighting and lots of lift racks well spaced and the entire joint is air conditioned. Its impressive.
     
  10. Prius_Gnome

    Prius_Gnome Junior Member

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    Thanks, edthefox5.

    I guess I'll bring it in to the dealership and have them diagnose it. I don't seem to notice the noise getting louder when I turn, but I guess it could still be a bad bearing. I guess I'll get it looked at and not risk it coming off in the middle of nowhere.

    Hopefully, it's something minor like a loose tire balancing shim or something sticking out and rubbing against my wheels.

    You wouldn't happen to remember the Part Number or anything, would you? I wanted to look it up online so I know if I was being ripped off when I get an estimate of labor and parts. Maybe I'll offer to provide them with the part and only pay for labor.

    Thanks for all your help.
     
  11. Prius_Gnome

    Prius_Gnome Junior Member

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    I just wanted to post a status update:
    I brought it into Westbury Toyota and told them that there was a rubbing noise coming from the driver side front wheel at slow speeds. They checked it out and removed debris from the brake caliper and rotor; the noise is gone!

    So hopefully, when others in the future search the forum, this thread will be helpful. It seems maybe that when there is noise from the wheels at slow speeds, it's probably something minor like debris. But when there is noise at highway speeds, it might be a bad wheel bearing.