13 problems related to brakes failed have been reported for the 2010 Mazda CX9. The most recently reported issues are listed below.
The vehicle suddenly lost braking power, and the brake pedal would sometimes feel "spongy" and sometimes feel rock-hard, with varying results for braking power. I went to a mechanic who said the brake booster failed, and we found this was a known problem with the Mazda cx-9, however NHTSA's investigation was resolved when Mazda covered this problem for one year from the date is closing the NHTSA investigation. This apparently is still a problem, though. I called Mazda's customer service, and they refused to acknowledge this problem existed and would only give the scripted "there are no open recalls on your vehicle".
Brake booster failed at 90k miles. Pedal is extremely hard to push and has little brake force. Along with a loud hissing noise from brakes. Mazda said it was part their special service warranty and would charge full rate to fix.
Upon stopping, brake pedal became hard to depress and car would not brake effectively. Braking action became degraded, time frame was one day. It was intermittent, but would not stop effectively creating a hazard. Unable to judge stopping distance due to brake degradation. Took to mechanic who replaced brake booster, said most likely a vacuum issue. Said this is a recall item on same part for Ford escape 2010 and Lincoln mkz. Ford owns most of Mazda and the cx-9 uses Ford made parts. Upon research, Mazda and NHTSA both know of the issue, but have not issued a recall notice. Ford has warrantied the same part for 150,000 miles, Mazda has not issued recall for same part with same problem and risk. Upon research of online boards regarding the same problem, there have been several repairs by Mazda owners for the same problem. This failure on my car is at 98,000. With the takata airbag recall, and not being able to get replaced and the brake booster problem, presents significant hazard to Mazda cx-9 owners for risk of rear end collisions due to brake booster failure and takata airbag deployment potentially causing serious harm or death to the driver and passenger. I am wanting NHTSA to move forward past the monitoring phase and ask for a recall or warranty of the vacuum booster failure at higher mileage as Ford has already done the same for their vehicles for the same part.
The brakes on our 2010 cx-9 are hissing upon brake engagement and have a hard feel to them for the first half or so. The brakes are slow to engage during this time. After the half way mark the brakes engage quickly and forcefully. It is consistent with the other complaints for the brake booster failure. I am having it looked at this week at a Mazda dealership.
Brake booster failed, dealership indicated it was under extended warranty. Brought in for repairs at no cost, Mazda failed to acknowledge and do repair. Cost me 556. 21 for a very serious safety issue that is under investigation. Would like to get reimbursed. Loss of brakes, unsafe to drive. Hissing sound from brakes when pressed.
My brake booster has failed and caused a near crash. The hissing sound when pressing the break occurs and the brakes do not come to a complete stop. I had the vehicle inspected and the same brake booster failure that has been reported has been previously reported. I was never notified from Mazda of the warranty extension and now that my mileage is at 101,000 miles I've just missed the "warranty extension" and they refuse to make the repair. Why is this just an investigation and not a complete recall? Mazda clearly knows there's a problem and this can cause serious accidents with injury. My wife, who is the primary driver, is pregnant and have 3 small children that use this vehicle.
My brakes basically failed! when I was driving, I tried to apply my brakes and I could tell right away something was wrong. The car had a lot of trouble stopping and I was afraid it wouldn't stop. The brakes felt very hard and I had to apply a lot of pressure to them to get the car to stop. I had to almost stand on the brakes to get them to work. When I called my mechanic he said it sounded like the brake booster failed which apparently is very common in this make and model of car. I almost hit a car when this happened and it was very dangerous and quite scary! it was also very expensive to fix, but would have been a lot worse if I had hit something.
The contact owns a 2010 Mazda cx-9. The contact stated that the brakes failed intermittently. The contact mentioned that he had to apply force in order to stop the vehicle. The vehicle was taken to the dealer. The manufacturer was notified of the failure. The approximate failure mileage was 41,000.
Driving in snowy conditions; brakes failed twice when I applied light pressure. First time, the brakes shuddered, but the car finally stopped after I applied hard pressure; the second time it happened, the brakes shuddered, and nothing happened when I first applied harder pressure. Eventually the car skidded, but it was too late.
Brakes failed due to faulty brake booster. Two others at the dealership had the same problem. Mazda could not immediately fix the problem because they are out of brake boosters and are not sure when any will be available. Indications are that this is a wide spread issue and should be investigated.
Cpsc: i1360001a. Mazda Cx9 2010. Consumer stated after 36,400 miles on car, a catastrophic brake failure occurred on a two year old impeccably maintained vehicle.
Catastrophic brake failure. Brakes would not stop vehicle. Vehicle towed for repair.
I filed a complaint through Mazda in 2012 and it didn't go anywhere. I saw an article in USA today, regarding my vehicle stating that an investigation was started due to 7 reported incidents on brake failures which resembled my experience. I am now sharing my story as it could have resulted in serious injury. I was approaching an intersection and applied the break but the car did not slow down, I pushed the brake all the way to the floor and the wheels squealed but the car did not slow. I let up on the brake and reapplied and that is when the car began to slow down. But, it was too late. I hit the car in front of me and launched it into the middle of the intersection. Thankfully, the light had just changed and the cross traffic was at a stop. When the police arrived, they noticed one skid mark on the driver side only which was around 200 yards. About 4 feet prior to impact, there were two skid marks, one on each side of the vehicle. They said that they had never seen anything like it and that I should take it to an independant person to get the brakes checked out. I have photos of this and sent all of the documentation sent to the insurance company and to Mazda. I felt neither believed me and was very diappointed in Mazda's response. Eventially, I gave up. We actually were going to sell the vehicle as I didn't feel comfortable driving it. However, after all of the responses I was getting about what I described as impossible with anti lock breaks or that it was a result of "panic breaking", I second guessed myself and we still have the vehicle. On a separate occassion 2-4 weeks prior to the accident on may 15, my husband was driving very slowly in a residential area and when he applied the break, the car initially did not stop until reapplying. He rolled part way into the intersection. I was with him when this occurred.