I have been experiencing issues with my brakes. Very hard to push, not coming to a stop, sounds like air & makes a hissing sound when brake are applied.the 1st time I noticed I was driving straight on a 2 lane st. A car was coming from the off ramp on the right of me & cut me off. I tried to brake but, they were so hard to push down, I had to jump into the next lane in order to not rear end her but, because I honked my horn, the lady jumped into her next lane causing me to have to cut back over again, all the while my brakes are really hard to push, the car wouldn't stop. They made hissing sounds. I had my mechanic check, states it's the brake booster & there may be a recall. I checked online, just a warranty. Mazda will repair before 90k or 7 years. I called mazda, who said they only make recalls with safety issues. I'd say the brakes malfunctioning is definitely a safety issue. The 7 yr expiration was up in 2018. When I bought the vehicle it already had 105k, so the warranty was expired. That makes no sense. It should have been a recall. What happens to people like me who buy the mazda cx-9 after the 7 yr or 90k mile expiration? It doesn't apply to us and we have to pay out of pocket? Knowing that this was a safety issue and that it was happening to 2010-2011 cx-9 models, it should have been deemed a recall. Especially when people buy used cars. This is not just an isolated issue or incident. This was literally listed by people with the same complaints. I have not been able to fix my vehicle. It's my source of transportation to get to work. I definitely believe this should have been a safety recall because people are still having issues. What if someone dies. Who'll be at fault if a persons brakes go & they get into an accident & get injured or die? There have been so many complaints regarding this issue, how could it be deemed a warranty and not a safety recall?
2010 Mazda CX-9 brakes complaints
Page 2 of 4: complaints 11 to 40 of 91, newest first, as owners wrote them.
I experienced a several braking problems in my car in the fall of 2020. I took it to the mazda dealership and they replaced the braking system per mazda's ssp 93 bulletin. However, mazda informed me that my car was outside of the extended warranty for this issue and I had to pay for the repair myself. I argued that it was clearly a safety issue because the braking system performed so poorly that I nearly got in multiple accidents. Mazda stated that it was not a safety issue, therefore no recall was necessary, and I wouldn't be covered for the repair. I believe the federal safety agency needs to make this a full safety recall. The braking failure is very dangerous to drivers and mazda needs to take full responsibility for this issue.
Hissing sound when break pedal is applied. Power break booster failure. This is when the vehicle is stationary or moving on any street.
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 the federal safety agency's investigation was resolved when mazda covered this problem for one year from the date is closing the federal safety agency 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 spongy...known mazda issue,the federal safety agency closed issue when mazda agreed to extend warranty,without recall. Our problem occurred after warranty ended...proving brake recall needs to happen!!!! On july 1st,2020, my wife's trip back home nearly turned tragic when the car wouldn't brake(felt spongy) down the highway ramp . Fortunately for her ,there were no cars at the intersection as the car zoomed right at 60 MPH .eventually,she was able to maneuver it to the right lane and drove it home with hazard lights on. Rightfully distraught about the whole ordeal ,we had to thank our stars for having her home alive and without causing injury/death to others. On my drive to the mechanics I heard air hissing and felt the brake really hard to push. Again hazard lights/ manual drive got us there. The mechanics immediately suggested that this is a known problem with mazda cx-9 and that mazda was aware of it. He said that mazda had provided extended warranty for customers who had the issue until march 2015. We were grossly unaware of any of this,as we never had the problem until this july. Not sure how we went on for so long without any problem( may be proper care/use?),but any issue with a brake should have been addressed by a complete recall ,not by just providing extended warranty for a limited time ,just for people currently experiencing the issue.mazda customer service downplayed the complaint as owner's expense as we did not have the warranty. Our situation proves that brake issues are not solved by extending warranty,and the only way to address this is by issuing a recall and correcting the problem. In addition, there might be many more mazda owners still driving their vehicles,completely unaware of this problem,thus constituting hazardous driving conditions. The next time we might not be as lucky to escape without injury/death.
About 1 month ago I noticed my car making a hissing sound when my foot was on the brake pedal at a red light or stop sign. If I was a long red light or in a drive thru for more than 5 minutes I noticed my car would begin to tremble. Then about a week ago I noticed if I had to brake suddenly, the brake pedal was very hard to push down making it almost impossible to stop. I took the car to the dealer on 2/3/2020 and the technician mentioned that they have been having problems with the brake booster.
There are noises coming from the front tires, when driving. No one could pinpoint the problem. Brake booster went out a couple months later.
Vehicle pulsates while braking while driving fast or at slower speeds. The steering wheel does not shake. The brake pedal does not pulsate. The vehicle brakes were changed several times with new rotors and pads on all four tires. I noticed there was a recall on lower control arms #15v‑451. It only was inspected at the time of recall but never changed. Could it be possible that they are now worn and can be changed per the recall.
The brake pedal became very hard to push. I assume it could be the brake power booster or brake master cylinder.
Tl* the contact owns a 2010 mazda cx-9. While driving at any speed, the brakes lost power and the brake pedal was difficult to depress without warning. The contact called mazda of clear lake at 281‑823‑5000 (located at 20101 gulf freeway, webster, tx 77598) and was informed that the warranty was expired. The manufacturer was not made aware of the failure. The vehicle was not repaired. The failure mileage was approximately 100,000.
The brakes are hard to push, appears spongy and makes a hissing noise when pressure applied.
Brake booster went out. Almost causing an accident because the brakes went stiff. I absolutely can not believe this isn't a recall. I guess it takes a serious injury or lawsuit to become a lawsuit. I was told by mechanic ti have to have repairs at dealer. Dealer is impossible to get a hold of for an appointment. I told them needs to be fixed asap and they booked me a week out!! So upset I drove and suddenly brakes stiffness. Could barely apply pressure
When I apply my brakes it sounds like they are releasing air, and they seem to be harder to apply them. It also makes this sound while I am stationary applying the brakes. I have 156k miles on the car, is this normal?
As noted by many on this site, I experienced a scary brake booster failure. Complete loss of powered brakes which put my whole family in danger. This is a family car and I have small children so this is appalling that mazda would not issue a recall for this problem. I see that there was a tsb and associated extended warranty period for this issue but as many have noted on this site, the true failure tends to occur after the 7 year warranty period. I actually started noticing some issues with the braking on this vehicle years ago, but assumed that it just needed new brake pads and rotors as the car was getting older. If I had received some type of communication from mazda or the federal safety agency, then I would have known the true issue during the extended warranty. I only have 77,000 miles on this car, but since it is older than 7 years... Mazda refuses to address the problem or take accountability for this quality defect. I paid for the repair myself. Mazda has lost a loyal customer. Shame on them for putting drivers and their families knowingly at risk and not doing the right thing.
Brake pad become very hard to push. I can't stop the car as usual.
After owning the vehicle from the dealership that I bought it from the power booster braking system is having malfunctions I own the vehicle for 8 months looking into recalls on this vehicle it shows that they were doing recalls on this system for this car approximately 4 years ago and now I bought the car and they're saying that is out of the extended warranty. If I would have known this before I purchase the car I would have never bought it it seems to brake booster seems to have a cracked that seems to leak air which causes the brakes to malfunction and can cause an accident I feel this is a very serious situation at hand here and that I not knowing what was the issue should not be responsible for a problem that the bad faction does no does exist and should be replaced by the manufacturer or fees and service
Having braking issues while driving on the highway as well as city streets the brake pedal is gets hard to depress and braking diminishes almost completely. According to research mazda has already identified the problem exists with the power brake booster. There is a defect in the rubber of the diaphram. Instead of issuing a full recall mazda extended the warranty period. My car of course was just outside the warranty period so mazda would not do anything about it. This seems like a serious safety component that can cause an accident and kill someone. We had many close calls because of this defect in their product that caused our braking to be almost non existent. The brake booster was replaced on our own dime and the problem was fixed.
While driving in houston highway rush hour traffic attempted to apply brakes due to traffic stopped ahead. Brake pedal was very difficult to press and made a hissing noise. After about 20-30 yards was finally able to bring car to a stop narrowly avoiding an accident. When took vehicle to mazda dealership was told it is the power brake booster that needs to be replaced. Service tech stated this was a known issue with the 2010 cx-9's. Mazda issued an extended warranty but customers were never notified so they could get the defective part repaired. My vehicle only has 83600 miles, so it is average mileage for an 8 year old car.
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.
Started getting a hissing sound from the brake booster and a hard to depress brake pedal.
This is regards to the mazda brake booster issue for the 2010-2011 cx-9. This issue revolves around customer notifications. The extended warranty time is 7 years or 90,000 miles. Mazda mailed out a single letter to owners. Mazda stipulated that the extension was transferable, however they made no effort to notify any of the next owners, not a link on their website even. This means that owners who did not get notified will not know of this issue and may spend about $600-800 to fix the issue even though it is covered (outside a dealer). Due to this being a safety issue with brakes not performing as expected during normal use, this should have been a recall. Any significant loss of braking power during normal use will cause any normal human to panic. The federal safety agency issued this while thinking as engineers, not taking into account how the human feels behind the wheel of a car that is not stopping. There are multiple reports of people nearly getting into accidents due to this at https://www.carcomplaints.com/mazda/cx-9/2012/brakes/brake_power_boost_unit_failure.shtml and other sites around the internet. Will it take injury or death for the federal safety agency to act? My own cx-9 started having issues, and when I took it in, the dealer stated the cost, and did not even mention coverage. I had to look it up. Most people would not have. My car is 2,500 miles out of the extension and mazda would not cover it. This is ridiculous. If I didn't have the money to fix it, and got killed, would mazda be forced to recall?
Hissing sound near brake pedal followed by extremely hard pedal and much effort to stop.
Hello! This morning on 19 december 2017, my wife was driving in a city street getting ready to cross a major intersection. The light turned yellow and she began to brake. At first they felt normal, but then the pedal went down and the brakes felt really hard and the hissing started, almost running into the back of the car in front of her. She pulled over and called me. When I arrived, I could hear a hissing sound as if air was leaking from somewhere near the brake booster. I am an air force aircraft mechanic and have been working on my own cars for over 40 years. I searched all over thinking that a hose might have torn or pulled out of the check valve, but I could not see anything obvious. The brake fluid level was fine, so I drove the car home and began to search the internet. I found this website: http://www.mazdaproblems.com/trends/brake-booster-failure/ and found out that mazda have known about the issue for years. I'm really upset that they would not make a recall on something like this, since it affects brake reliability and could cause an accident, injury or death!!! I've contacted the dealership: http://www.eldoradomazda.com/ to verify if it would be covered, and they told me that it was not. When I inquired about why weren't owners notified of this possibly lethal situation, they could not provide an intelligent answer, other than your car is too old and it has too many miles. Our vehicle barely has 92k miles on it, an average of 13k per year. They still told me that they would fix it, but that I'd have to pay for it . This situation is absurd and negligent and I feel that anything to do with brakes and their performance or lack there off should be a safety recall and owners should not have to find out the hard way like days before christmas or after an accident!!! Please, help us! :) hope you have a merry christmas!
Tl* the contact owns a 2010 mazda cx-9. While the brake pedal was depressed, the vehicle came to a slow stop. The contact heard a hissing noise coming from the brake booster. There were no warning indicators illuminated. The vehicle was taken to ed morse bayview cadillac (1240 n federal hwy, fort lauderdale, fl 33304 (888) 463-2950) where it was diagnosed that the brake booster needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure and did not offer any assistance. The approximate failure mileage was 100,000.
Mazda cx-9 when applying the breaks, pedal at one point during breaking process becomes spongy, as pedal resistance appears to release. When foot pressure is removed from break pedal and reapplied, break pedal pressure is very hard to press and breaking efficiency is diminished considerably as though break booster has failed. Breaking issue appears to occur primarily when coming to a stop at reduced speeds. Noticed issue with recent ca heat wave, vehicle appears unsafe to operate. With wife participating as a driver in carpool, she just recently experienced the condition and is concerned that it can result in an accident if not addressed. Certainly appears to be the same issue indicated here: http://www.carcomplaints.com/news/2014/government-closes-mazda-cx-9-brake-pedal-investigation.shtml
My brake pedal suddently became very hard to push, lets off a hissing sound when pushed and takes a long time to stop. I was on a city street coming to a stop light and wasn't sure my car was going to come to a stop. I am now learning through research that this was a problem mazda knew about but didn't notify everyone of the extended warranty they offered to make the necessary repair. Now, my car doesn't qualify for the repair as it isn't in the limited extended warranty mileage that mazda offered for this repair. I just started having problems with this issue on sunday, august 20, 2017. Since I never received any notice of this brake booster problem, how could I possibly have known about the extended warranty and had it serviced during that time and mileage frame?
When pressing the brake pedal, it gets hard to push like pressure is built up and you can't stop. When you are able to depress the brake pedal fully to come to a complete stop, you hear a hissing sound as if air was letting air out of the tires. The response for slowing to a stop [was] much longer and unless you press the pedal all the way to the floor, the vehicle rolls. It is unsafe to drive
My brake pedal becomes very hard to push, lets off a hissing or whistling sound when pushed and takes a long time to stop. When I called the dealer they advised it was a known break booster issue. The issue happens maybe 1/4-1/2 of the time I am trying to break. The dealer had me bring the car in- but then told me my car didn't qualify for the repair as it wasn't in the limited extended warranty mileage that mazda offered for this repair. My complaint is - if this is a known safety issue with the breaks not working properly- why is this not a recall and just a limited warranty- how can they get away with that? Also, how can they then not notify all the owners of the potentially affected vehicles of the limited warranty so that we can bring the car in at that time for repairs- instead of only waiting until a customer has a complaint on the issue.
My brakes have a hissing noise and and are hard to brake when I push the brake pedal. The service dept tells me that the brake booster is bad and needs replacement. ($800)these are supposed to last the life of the car. I have just over 100, 000 miles on it. I have a 2010 mazda cx-9. I was never notified that mazda had this widespread problem, that the government was investigating it, or that mazda was offering a "special service program" that would have covered this repair while it was under 90,000 miles. It was in motion when I I noticed this problem last thursday while driving on city streets. It is now in shop.
My vehicle is at about 87000 miles, the breaks started malfunctioning while driving on the highway texas 35 I have to press hard on the pedals in order for the car to stop[ I do hear kind a like a zizzle when I press on the breaks but even if I press hard the pedal to stop it still keeps going for about 3 to 4 feet.
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