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Clunking when reversing

Discussion in 'Gen 2 Prius Main Forum' started by james909, Dec 30, 2018.

  1. james909

    james909 Junior Member

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    2005 Prius
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    When I reverse a regular clunking noise can be heard from the back of the car. I did a friction emergency stop in neutral and that resolved the problem but only for a short while. Any thoughts? Seized calliper perhaps? Already checked the tyres for screws etc. Thanks.
     
    #1 james909, Dec 30, 2018
  2. DMC-5180

    DMC-5180 Active Member

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    Have you checked for loose items inside the car. Like the storage bin under the aft floor or left side covered compartment?


    iPhone X ?
     
    #2 DMC-5180, Dec 30, 2018
    kenoarto likes this.
  3. Patrick Wong

    Patrick Wong DIY Enthusiast

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    Since the OP is suspecting the rear brakes, I suggest jacking up the rear of the car. Spin each rear tire by hand to see if the noise can be produced. Maybe that would provide a further clue about the source of the noise.
     
    #3 Patrick Wong, Dec 30, 2018
  4. JC91006

    JC91006 Senior Member

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    On my 2015 with disc brakes, I hear a clunking noise when I brake in reverse. I addressed this with the dealer and their foreman. Their diagnosis is it's a normal brake pad shifting noise and not something needing repair. Strange thing is my 2010 doesn't make this noise.

    Not sure if you have disc brakes or drum brakes though. In the USA, gen 2 cars would have drum brakes
     
    #4 JC91006, Dec 30, 2018
  5. james909

    james909 Junior Member

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    Hi. It has disc brakes. The noise is when I'm moving backwards with no braking at all.
     
    #5 james909, Dec 30, 2018
  6. james909

    james909 Junior Member

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    Good idea. That's worth a look.
     
    #6 james909, Dec 30, 2018
  7. james909

    james909 Junior Member

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    Thanks Patrick. I think this is the way to go!
     
    #7 james909, Dec 30, 2018
  8. edthefox5

    edthefox5 Senior Member

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    You don't mention miles but since its a 2005 I bet its got 200+.

    Since friction stop seemed to fix it get a flashlight and look at all the disc brake rotors through the wheel slots. See how bad they are.
    Should be perfectly smooth if they have deep lines in them or gouge lines or bad corrosion there toast and in the am will make quite a racket.

    The disc brakes are very weird on this car. They corrode quickly overnight. If the car lives outside you may want to think about getting cheap ebay wheel covers.

    Take a picture of the rotor and post it.
     
    #8 edthefox5, Dec 31, 2018
  9. james909

    james909 Junior Member

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    Hi. It's done 120,000 miles. I've realised it only makes the noise when it's cold, normally reversing the car from a cold start. Here are the rear disc images: 20190104_112225.jpg 20190104_112209.jpg
     
    #9 james909, Jan 5, 2019
  10. edthefox5

    edthefox5 Senior Member

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    Those rotors are shot.
     
    #10 edthefox5, Jan 5, 2019
  11. Patrick Wong

    Patrick Wong DIY Enthusiast

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    A very impressive amount of rust developed on that rotor.
     
    #11 Patrick Wong, Jan 5, 2019
  12. edthefox5

    edthefox5 Senior Member

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    Merry old England. That car needs a raincoat.

    If I lived in that environment with this car I would buy slip on vinyl wheel covers there cheap on ebay. It will really help.
     
    #12 edthefox5, Jan 6, 2019
  13. james909

    james909 Junior Member

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    It's the salt they put on the roads in winter that really doesn't help. Most people use summer tires all year so they put a lot of grit down to keep the roads moving. The whole underside of the car has a lot of surface rust.
     
    #13 james909, Jan 6, 2019
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  14. edthefox5

    edthefox5 Senior Member

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    How many miles? If rusted into oblivion make sure you factor that in to any big $$$ repairs. It may be too far gone corrosion wise.
    Seen alot of those on here. Send some more pics.

    Too bad as its easily mitigated.
     
    #14 edthefox5, Jan 7, 2019
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