Tl* the contact owns a 2012 mazda cx-9. The contact stated that while driving at approximately 20 MPH, the brakes failed to operate. The contact mentioned that the brakes gradually slowed down the vehicle and stop independently. The vehicle was taken to an independent mechanic where they informed the contact that there was an unknown recall on the vehicle. The contact contacted riley mazda (75 myrtle ave, stamford, ct 06902, (203) 978-5780) and was informed that the VIN was not under recall. The contact was informed of an extended warranty coverage however, the mileage had been exceeded. The manufacturer was notified of the failure. The approximate failure mileage was 129,000.
2012 Mazda CX-9 brakes complaints
Page 2 of 6: complaints 11 to 40 of 143, newest first, as owners wrote them.
I was on the interstate (driving 60+MPH) and the car in front of me slammed on their brakes for an unknown reason. I tried to use my brakes but they were rock hard and the pedal wouldn't depress. I was forced to swerve to the right, still having no brakes, and barely made it over 3 lanes to the shoulder of the road. In doing so, I caused total chaos around me, caused a tractor trailer to start to jackknife, which caused a chain reaction behind him. It was a total miracle that no accidents were caused and no one was killed. I called my mechanic from the side of the road, hysterical. He looked in his database and found that mazda had known issues with their power brake booster. I subsequently found a letter from mazda instructing owners "if your vehicle is functioning properly, there is no need to contact your dealer." are you kidding me???? My brakes were fine until they weren't, then I narrowly avoided being killed or causing the death of another because apparently mazda's body count wasn't high enough to issue a recall.
I was driving slowly about 30miph and began hearing a hissing noise when I depressed the brake pedal. Once I pulled into my driveway a small incline, and pushed the brake pedal it was very tight and stopped at a point, but would not go further, tried shifting different gears. Finally brake depressed. Hissing has continues, very stiff brake pedal
Brake booster on vehicle went out while driving, hard to engage brake and slow vehicle to a stop.
Tl* the contact owns a 2012 mazda cx-9. The contact stated that while driving, and making a turn at 5 MPH, the brakes were squishy and the vehicle failed to stop. There were no warning lights illuminated. The vehicle was taken to bob moore mazda (13045 n. Kelley ave, oklahoma city, ok 73131 (405) 775-7000) to be diagnosed. The contact was informed that brake master cylinder needed to be replaced. The vehicle was not repaired. The manufacturer was contacted and stated that the extended warranty had expired. The failure mileage was 75,000.
While pulling into my garage at low speed, my power brakes failed. I had to practically stand on the break pedal to get the vehicle to stop, barely stopping before hitting the fridge in my garage.the vehicle was towed for service and the problem diagnosed as the failure of the brake vacuum booster.
Brake pedal has become harder than usual to depress and the car does not start stopping until the brake pedal is depressed harder and further down. Also there is a hissing noise once the car stops and the brake pedal goes further to the floorboard. Once stopped and sitting the car will lurch as if it has been hit in the rear end. This all happens on any type of roadway. This has been going on for about two months and getting more pronounced.
When applying brake, hear hissing sound down at feet. Hard to stop, feels like pedal is pushing back. This happens at all speeds, even when putting car into gear from park. It has been ongoing for about 2 weeks. Mechanic advised it is the brake booster.
I was driving home with the family after viewing some house. Every time I would step on the brake pedal I would hear a hissing from the brake. Been happening for about a month now but, with the pandemic going on I just don't have time to diagnose the problem. When I press on the brake it would stop like normal with air hissing. The next day the brake pedal would feel very hard to press down. Like as if you been pumping your brake when the car off and when you turn your car on the pressure would be released. Not today, it stayed hard and hard to stop. I had to press the brake very hard as if pressing the brake pedal all the way down to the floor to make the car stop. Just stopping at a red light, stop sign, off the highway, and traffic was a challenge. I'll eventually stop but in the middle of a intersection or in the back of a car. If I had to brake because someone turned in front of me, I would of just hit them full speed because my brake booster failure to produce enough pressure to engage my brakes to stop. The day the brake booster happen to failure completely is when we had a family trip down to the wisconsin dells over the july 4th weekend. Since brake booster wasn't a recall but an extended warranty and ended march 2015 or 90,000 miles. Mazada would charge me full price to get it fixed. I would not fell safe driving it to the dealer and mazada doesnt cover towing unless its within 3 years. So they'll tow anything in the 2017 and newer. 2012 mazada cx-9 with 112,500. Owned it for exactly 3 to dated
Purchased from a certified pre-owned mazda dealer....I experienced, with no warning, my brakes become hard to press. It happens in reverse, coming off cruise, slow/fast speed, etc. I have to use an extraordinary amount of effort to press the brakes and bring the car to a stop. If someone pulls out in front of me, there is no guarantee I would be able to operate the brakes quickly enough to avoid an accident. I have children I transport and it is concerning for me as a mom especially. A few times the pedal will 'release' and operate normally after the extra pressure is applied which causes the car to jerk to a stop because the brakes were being pressed very hard. Most times, extra pressure is required the entire time. This is a major safety concern and an issue I am aware is common in this model. Mazda extended this warranty to 90k and 7 years back in 2015; however, this does not cover used car purchasers. The issue was not disclosed to me in my purchase date of 12/12/2016. Had I known this major component could fail, I would have made a more educated decision on whether to purchase or request the faulty system be corrected.
I am now experiencing what mazda mailed owners previously (see attached ssp93 owners notice) regarding "power brake unit warranty extension program ssp 93 2007-2013 mazda cx-9". I strongly believe that this is a safety issue since I find myself running stop signs when I try to stop the vehicle at an intersection. I know that mazda extended the warranty to 7 years on it's ssp93 bulletin. But what happens to owners like myself who do not fall within that time-frame and are now experiencing this safety issue? It is unconscionable, that since mazda has acknowledged this problem, that the owner like myself gets stuck with this safety problem concerning failure of the braking system on the cx-9. Please advise. Thanks.
As the car was being driven the breaks became hard and unless pressed very hard it keeps going. It doesn't go down at all. Assessment shows brake booster failure. It is weird other vehicle I had ...a toyota never failed. I can't drive it.
Brake booster failed. This is a known issue to mazda. Mazda said to bring into dealer for assessment and consideration for goodwill warranty replacement. Dealer determined brake booster failed and mazda then denied goodwill claim. I paid dealer to fix the issue. This is a major safety issue and should have been recalled, not granted an extended warranty.
Power booster high pitch sound when pressing brakes and brakes are hard when pressed then go soft and hard to stop the car.
2012 mazda cx-9. Consumer writes in regards to brake power boost unit failure. *ld the consumer stated that when pressing the break pedal there is a hissing and thunk noise. The engine would stall. The dealership and manufacturer were notified, but denied assistance.
Brake pedal action feels spongy, soft. Requires extra force to stop the car when moving on city streets.
When pushing the brakes the pedal is 'hard' as if the pedal was on the floor there's a hissing noise like air is leaking. If you need to make a sudden stop it does not happen the brakes are so hard the car won't stop!! This defect happened suddenly there was no gradual warning !
So disappointed in the federal safety agency for not requiring mazda to recall the brake booster failure! The federal safety agency's investigation into the brake booster failure was closed when mazda agreed to an extended warranty for this manufacturing safety defect. Had the federal safety agency pushed for a recall notice, we would have been alerted to this safety defect and could have had it repaired (it is known to fail around 62,000 miles). We contacted mazda today about the warranty only to be told our vehicle warranty expired less than 3 months ago, resulting in mazda's refusal to cover a known safety defect. Mazda's lack of commitment to resolving this safety issue is shocking. The federal safety agency's acceptance of mazda extending its warranty for this known safety issue is disheartening as well. A manufacturing defect is a manufacturing defect; the problem should have been addressed when it failed or, at the very least, recalled and replaced. A time limit should not have been an option for a safety issue (or an out for mazda). Perhaps it is time for the federal safety agency to reopen its investigation to protect the consumers against a known safety defect. Mazda certainly doesn't back it's product when it comes to safety issues!
Tl* the contact owns a 2012 mazda cx-9. While attempting to accelerate from a traffic light, the accelerator pedal was depressed; however, the vehicle failed to respond. The contact stated that there were no warning indicators before or after the failure. The brake pedal also became extremely difficult to depress. The vehicle was towed to continental mazda (located at 2363 aurora ave, naperville, il 60540, (630) 352-5900) where it was diagnosed that coolant entered the engine oil and caused the engine to fail. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was notified and provided case number: 1-2189354066. The approximate failure mileage was 52,000.
Applying brakes for 1-2 seconds resulted in no immediate stopping, only resistance from the pedal. After 1-2 seconds, the brakes were aggressivly applied. This resulted in "running a stop sign" and stopping the in middle of an intersection. This occurred on a city street multiple times before getting the car to a repair shop. On highways, braking had to begin well in advance to avoid possible crashes. We had to have the master cylinder and brake booster replaced. The vehicle has 55k mile on it.
Brakes slip causing unexpected increase in stopping distance even at low speed. Very concerned about family safety. Research found issue was noted previously and supposedly closed, but many complaints like mine have been filed since. How many deaths must the federal safety agency see reported until they take action and recall this admittedly faulty design?
I put my vehicle in the mazda shop last year 2017 for a recall and I mentioned that there was something I felt in my brakes they told me that it may be dust and by driving it will go away,mazda knew about this problem they should have taken care of it then.my vehicle was taken to ourisman mazda dealership about 2 weeks ago and I was told that it was my brake booster & master cylinder labor is $709.47 and the parts are $537.98 and the brake flush is $202.61 total $1450.06 and my warranty expired in october 2018. I then called mazda and I spoke to a ms.jennifer a customer experience representative and she said she would check into it.I then called back to ourisman mazda and spoke to mr.emerson and he told me that he spoke to ms jennifer at mazda and that my out the door price would be $553.16 and they have already ordered the part ,they stated mazda called off the recall and did a 7 year warranty or 90,000 miles my car is neither of them for a 2012, then they wanted to say its because when my car was purchased? Then to tell me that when I put my car in last year for a recall if it was not making a problem they were not going to look for one? On these roads,my children,my grand children and the lives of all people I,and I'm sure a lot of people feel .I have been sick and without a loaner car and this is unexceptable I would greatly appreciate your help with this problem.my contact person with ourisman mazda is mr.emerson 240‑863‑2429 and my contact info for mazda customer rep is jennifer 800‑222‑5500 prompt 2 then ext 1133 (1-1930090754) the recall needs to be put back on, I was never notified that there was a extended warranty.this can result in serious injury or death,how dare them put a price on this.
Brakes were occasionally 'tight', had to be pushed very hard to get the vehicle to stop. When I pushed the brakes it sounded like air was being pushed out. Changed pads and brake fluid, flushed the air out. Only made it worse. Now the brakes are constantly 'tight' and after learning this is a common issue with this vehicle I'm going to replace the brake booster. Ridiculous that so many are having this issue and mazda isn't recalling this part!
Vacuum power brake booster failure, my brakes did not work and my car stalled. There is a warranty extension for this problem - not a recall - I never knew anything about it. A consumer must be notified of a recall but not a warranty extension but this is a very dangerous problem. I fear for the safety of others who may not know about the problem. If you don't know about it you do not ask to have it checked and when it fails you are in danger. I appreciate the warranty extension but I honestly think that I should have been notified. No one was injured and there was no property damage - I believe there should be some reconsideration regarding the decision not to issue a recall on this problem.
The break booster went out without warning and could not stop the vehicle
Tl* the contact owns a 2012 mazda cx-9. While driving 35 MPH, the brake pedal was depressed, but failed to engage. The vehicle was examined by an independent mechanic who diagnosed that the power brake booster needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 110,000.
I parked my mazda after coming back from my lunch break and noticed that my brake pedal was a lot harder to push. I also heard a noise coming from what seemed like the pedal. It sounded like I was letting air out of a balloon. After work, while driving in reverse to back out of my parking stall, I noticed the brakes were still very hard to push. The noise was also still happening, but it was louder. I decided not to drive my vehicle until I had it looked at by a mechanic. When my mechanic started my vehicle and began to test drive it, the noise was gone, but he also felt that it was very hard to apply my brakes. The problem was diagnosed as a bad brake booster. After the problem was diagnosed, I researched common complaints with this, and discovered that it is also an issue in the earlier models (2010 and 2011) this is a major safety risk that I would like investigated. Thank you!
Letter from senator gardner on behalf of constituent regarding his concerns about a defective brake design system which exists in the mazda cx-9. *ld
Virtually complete loss of braking. Quick onset. Apparently the same underlying defect as investigated in 2008-2011 (incorrectly closed) and in tsb #ssp93 the federal safety agency id #10117767. The dealer had the car in for another issue (recall) in march; but did not fix this issue (not allowed to speak of it -- unless the customer brings it up (personal communication 7/3/2018). The federal safety agency staff should have noticed that the 2012 tsb is essentially a continuation of the core issue from 2008 onward. A failing booster should increase the effort to brake, it should not be permitted to result in complete loss of functionality!
At just over 90,000 miles I had transfer case problem that everyone is posting. As described by mechanic it is a manufacturing defect. Transfer case is placed just above catalytic converter (which throws off alot of heat) as a result oil in transfer case cooks over time and gears are destroyed. Mazda did not provide a way to replace and or check this fluid without taking down the entire transmission. Mechanic said I will have this problem again at roughly another 80-100,000 miles. Year and a half later I noticed a very soft brake. I replaced brake pads and drums, and brake fluid. I have a very hard brake which then sporatically goes soft. Again I looked up this issue and found again mazda is aware of this issue and extented warranty to 90,000 miles. Again I'm just over the warranty allowance and now my brake power booster and possibly master cylinder need to be replaced. Both are known issues by mazda. Unfortunately I was the lucky one who was the beneficiary of both problems just over the 90,000 mile warranty. I reached out to mazda to request some assistance with at least the cost of the parts on the brake power booster. I was given a quick no by mazda. Very frustrating since these are both known problems and they will not at least work with me on the parts cost.
VIN decoder
See the problems and recalls for an exact car
Buying a used 2012 Mazda CX-9?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history