Clunking when reversing

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

  1. james909

    james909 Junior Member

    Joined:
    Aug 10, 2015
    22
    7
    0
    Location:
    Leeds, U.K
    Vehicle:
    2005 Prius
    Model:
    N/A
    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.
     
  2. DMC-5180

    DMC-5180 Active Member

    Joined:
    Dec 1, 2013
    291
    132
    0
    Vehicle:
    2005 Prius
    Model:
    Two
    Have you checked for loose items inside the car. Like the storage bin under the aft floor or left side covered compartment?


    iPhone X ?
     
    kenoarto likes this.
  3. Patrick Wong

    Patrick Wong DIY Enthusiast

    Joined:
    Mar 8, 2008
    18,191
    6,395
    0
    Location:
    Green Valley, AZ
    Vehicle:
    2015 Prius
    Model:
    Two
    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.
     
  4. JC91006

    JC91006 Senior Member

    Joined:
    Nov 10, 2013
    15,838
    8,083
    0
    Location:
    Los Angeles, CA
    Vehicle:
    2008 Prius
    Model:
    II
    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
     
  5. james909

    james909 Junior Member

    Joined:
    Aug 10, 2015
    22
    7
    0
    Location:
    Leeds, U.K
    Vehicle:
    2005 Prius
    Model:
    N/A
    Hi. It has disc brakes. The noise is when I'm moving backwards with no braking at all.
     
  6. james909

    james909 Junior Member

    Joined:
    Aug 10, 2015
    22
    7
    0
    Location:
    Leeds, U.K
    Vehicle:
    2005 Prius
    Model:
    N/A
    Good idea. That's worth a look.
     
  7. james909

    james909 Junior Member

    Joined:
    Aug 10, 2015
    22
    7
    0
    Location:
    Leeds, U.K
    Vehicle:
    2005 Prius
    Model:
    N/A
    Thanks Patrick. I think this is the way to go!
     
  8. edthefox5

    edthefox5 Senior Member

    Joined:
    Jul 25, 2007
    9,852
    4,633
    0
    Location:
    Clearwater, Florida
    Vehicle:
    2007 Prius
    Model:
    Two
    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.
     
  9. james909

    james909 Junior Member

    Joined:
    Aug 10, 2015
    22
    7
    0
    Location:
    Leeds, U.K
    Vehicle:
    2005 Prius
    Model:
    N/A
    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
     
  10. edthefox5

    edthefox5 Senior Member

    Joined:
    Jul 25, 2007
    9,852
    4,633
    0
    Location:
    Clearwater, Florida
    Vehicle:
    2007 Prius
    Model:
    Two
    Those rotors are shot.
     
  11. Patrick Wong

    Patrick Wong DIY Enthusiast

    Joined:
    Mar 8, 2008
    18,191
    6,395
    0
    Location:
    Green Valley, AZ
    Vehicle:
    2015 Prius
    Model:
    Two
    A very impressive amount of rust developed on that rotor.
     
  12. edthefox5

    edthefox5 Senior Member

    Joined:
    Jul 25, 2007
    9,852
    4,633
    0
    Location:
    Clearwater, Florida
    Vehicle:
    2007 Prius
    Model:
    Two
    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.
     
  13. james909

    james909 Junior Member

    Joined:
    Aug 10, 2015
    22
    7
    0
    Location:
    Leeds, U.K
    Vehicle:
    2005 Prius
    Model:
    N/A
    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.
     
    bisco likes this.
  14. edthefox5

    edthefox5 Senior Member

    Joined:
    Jul 25, 2007
    9,852
    4,633
    0
    Location:
    Clearwater, Florida
    Vehicle:
    2007 Prius
    Model:
    Two
    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.
     
Loading...