Two problems related to brake grinding noise have been reported for the 2010 Toyota Prius. The most recently reported issues are listed below.
I had been hearing a lot of grinding noises that just got worse. When I went to the dealer, they discovered that my brake pads had failed/frozen. They replaced my pads and machined my rotors. They could not explain why a car I had for only a little over a year had this problem. They at first blamed my driving, and then the roads (I. E. Too many gravel roads). Now, at 68,300 miles those pads have now failed again. One is completely worn down and the rotor is now rusted through. No one can explain why this is happening. When I demanded an answer, they told me that a "bulletin" had gone out to the dealers only stating that due to the pads failing, they were "redesigning" them. But, they would only replace for free those that fell under the 36,000 mile warranty. I don't understand why, in less than 69,000 miles I have had to have this repair done not once, but twice. They tell me no other owner has had this problem, but I find that hard to believe. Can anyone tell me if there are other complaints of this type, and what can be done to rectify this problem.
1. I purchased this 2010 Prius in August 2010. I have experienced unanticipated acceleration two times since the last (initial) service. Once with my husband driving on route 17 and the other time while I was driving on a local road. 2. As I stated in my service paperwork when the car was first serviced, there is a problem with the brakes. They do not stop on uneven road surfaces, such as pot holes, bumps, etc. Your service department said that this is caused by the abs and it is ?normal?. Obviously there is still a problem. Please advise what will be done to correct this issue. 3. When start the engine first thing in the morning (or when the car has not been driven for a while) often, but not always, it makes a grinding noise when starting.