general problems of the 2012 Mazda CX9 - part 2

Brakes have become very squishy and unresponsive and there is a hissing sound when depressed. This is a 2012 Mazda but it only has 23. 5k miles on it. This happened all of a sudden and without warning and makes the vehicle very dangerous to drive. It is becoming progressively worse, will be taking to the dealership for repair under supposed extended warranty.

My break pedal feels as if it becomes stiff and I hear a hissing noise coming from the pedal. My breaks will not slow the vehicle. I have to remove my foot and reapply pressure forcefully in order for the breaks to work. It does this in reverse, going down an incline or flat surface. This happened while my child was with me. Please repuireva recall or lives may be at stake.

Brake pedal intermittently will not depress and will not stop the car from going forward. Brake reservoir full. Multiple times during a single drive. Very unsafe.

Brake pedal suddenly became very stiff and hard to depress. Car was in motion and occurred as I was slowing down from 30mph to 20mph to enter an active school zone on a residential road. After coming to a standstill and repeatedly depressing the brake pedal a hissing sound could be heard emanating from the brake pedal area.

This is relating to NHTSA investigation pe 14-005. Although this car is a 2012 Mazda Cx9, my wife driving the car had the same issue where she heard a hissing noise and the brakes were very difficult for her to depress or to stop. A brake issue is a major defect where the NHTSA should have initiated a recall in accordance with 49 u. S. C. 30118-30120, which required notification of all owners. Why the NHTSA allowed Mazda to only issue a 'special extended warranty' is beyond me, and smells of a back door deal. Nonetheless, I was unaware of this issue with the Mazda Cx9's as I was never notified. My wife drove the vehicle home and I purchased the replacement parts at my own expense. This should be a full recall and should be reopened as your current investigation pe 14-005 only included years 2010-2011, and did * include the 2012 model year.

Brakes are hard to push. It feels as if pressure is pushing up as I push down.

Upon driving my vehicle, it became very difficult to stop at all times. I had to use both feet to stop at a emergency stop and almost hit a car pulling out in traffic. There was no stopping this vehicle using the breaks. I have my two small children that travel with me, this problem was a huge threat to their safety and lives. This problem needs to brought to the attention of other drivers before it is too late. Before my car caused an accident, I brought it to my mechanic and he told me it was the break booster. He also told me that this should not be happening considering the age and mileage on my vehicle. He did some research and found several complaints related to this issue, but no recalls. With no other choice I had him fix the problem. This is a huge safety problem and should have a recall. I would like to be reimbursed for the mechanic I paid to fix the problem. If it wasn't for the defect in the break booster, I wouldn't have had this problem in the first place. My questions to you are, how many people have to have their lives and loved one's lives put at risk in order for a recall to be issued? is it cheaper to have a law suit or to issue a recall?.

Drove ~600 miles with a failed brake booster. Found out via internet that Mazda had provided an extended warranty to cover this defect. When the dealership where I took the car tried to find the part it was on backorder with Mazda. The Mazda service manager at preston Mazda, john rosensteel, had one of his people drive to butler, PA from boardman, OH to pick up the part. I took the car to the dealer on the day before thanksgiving and the car was ready to go with a new boost unit by Friday. This was all due to the efforts of an excellent service manager at the dealership. Mazda failed me as a customer by not having the brake booster in stock even though it was the subject of multiple failures and an extended warranty.

While braking normally for a stop sign, the brakes became hard to press and did not stop the car as normal. Hissing from the pedal area was heard and the car finally stopped halfway through an intersection after nearly standing on the brakes.

Brakes felt hard/stiff and vehicle didn't stop as expected. Almost hit another car. Had to apply brakes multiple times to slow down.

Loss of brake fluid; brake pedal hard to push. Unable to stop car; hissing noise at brake pedal.

Breaks slowly strted to get harfer to press , here and there and last Friday went to take NY kids to the store and a couple neighborhood kids taged along when I got to the intersection my break pedal would not press down so thankfully no cars were coming as I slow rolled through the stop sign on a very busy fast speed higway . Called Mazda and they said they have had issues . Please if u notice any break issues get them fixed right away this story could have ended much diffrently with the loss of 5 kids killed because this is not a recall just a common complaint at this point it was under investagation at one point . Mazda needs to step up and send letters to owners of this issue . Let me note Mazda was qiuck to get it n and fixed and gave me a rental . Thank u for that but all I can think about is how all this could have ended .

The brake pedal on the Mazda cx-9 became very very hard to push. Also, while I was stopped completely with the brake all the way down, the brake would temporarily release itself and I had to use two feet on the pedal to get the car to completely stop! this should warrant a complete recall as I almost drive into busy intersections twice so far!.

Brake booster - I had issues pressing on my brakes, like a book had been placed underneath preventing me from fully applying pressure to stop my vehicle. This happened when I would back out of the driveway, go down the highway, and in traffic as I sat on the highway. When my car was stationary, I would apply pressure to the brakes and could hear a very loud hissing sound as though someone was letting air out of my tires. Luckily I wasn't in an accident, however, it almost happened on a few occasions. When I called Mazda to have my car checked out, I was told this is a common problem that seems to happen with the cx-9 and I was advised to bring my car in.

Brake booster - when depressing the brakes (any time of day) there was a strange hissing noise, like air being released from a balloon. If the pedal was pressed closer to the floor there was a high pitched squeal. Brakes became very hard to press and the car became extremely difficult to stop. Luckily there were no card in front of me. A repair shop instructed me to check brake fluid (which was slightly low, and I filled it). This did not solve the problem. Brakes are even harder to press. From research I see that Mazda has had this problem for some years now. They should recall these cars and replace the boosters before someone is killed. We have four kids in our house and this is our only transportation. The car is no longer under warranty so I will be left replacing this on my own.

Brakes feel hard and vehicle brakes slower than it should. It took a much longer distance to stop. Hissing sound from pedal. Found numerous descriptions on similar problems with brake booster tear. Don't understand why this was not recalled.

Brakes became stiff and difficult to press. When brake pedal pressed to the floor, loud squealing noise heard from inside the cab. Stopping distance and brake pedal depression continue to worsen as time passes. This has now become so bad that we can no longer drive the car safely.

Power brakes are going out. While driving the power assist on the brakes goes out. You have to push as hard as you can to get any stopping ability and then they will work fine again. This happens randomly but frequently. The car has 75,000 miles.

Brake pedal became spongy and stopping power diminished considerably. Heard a loud hissing sound from the front driver's side. Had to fully depress the brake pedal to stop quickly.

The brakes have become very hard to push, it takes all my might to get car to stop, and there is a squealing sound when pedal is pushed all the way down. Feels as if car isn't going to stop.

We have noticed the difficulty in depressing the brake pad along with the hissing noise over the past 1 month and it has progressively became stronger. Initially you brush it off thinking you are imagining it. Today on a hill there was an accident so traffic was barely moving, I started to leave more and more distance with the vehicle in front of me as it was becoming increasingly difficult to depress the brakes. Finally I hear a strange noise and then complete quiet and my teenage daughter notices too and as I release the brake to move I realize the car engine had died (the engine has never given any indication of issues before) but the engine dash lights weren't on indicating there was not power which of course means no power steering either, a quick shift to n and restart and all is fine the rest of the way home. The hissing noise and difficult depression continued however while on the hill when I did press hard enough for the brakes to respond they did so as though bypassing the anti-lock system as they would jolt into the stop. Very concerning as the distance to stop has increased, what if a person walked in front of me much less if I'm on the freeway and come upon a sudden need to stop. But here it is a Saturday evening and how and when can I deal with an obvious safety issue that clearly is repeated. I wonder how many out there have not taken the time to report, have spent much on repairs or simply traded in their vehicle to come in to the hands of some other unsuspecting consumer. Action truly is needed before someone's lives are changed forever.

The brakes have become very hard to push, it takes all my might to get car to stop, and there is a squealing sound when pedal is pushed all the way down. Feels as if car isnt going to stop. This occured on the highway and I was lucky I was able to downshift to slow car and get off highway.

Brakes feel hard and vehicle brakes slower than it should. It took a much longer distance to stop. Hissing sound from pedal. Found numerous descriptions on similar problems with brake booster tear. Don't understand why this was not recalled.

The brakes do not work. When I initially depress the brake from park to drive, the car begins to roll as if I did not have my foot on the pedal. I hear a hissing sound now when I depress the brake. The brake system has rapidly deteriorated in just 1 week. Sometimes, I am not able to stop the vehicle at all. I will be taking my vehicle back to the dealership tomorrow. 4. 9. 16.

My wife complained to me about her brakes becoming hard to the point she couldn't stop the car. I then took her car for a drive and while in motion I hit the brakes and the brakes became so hard I had to use an unreasonable amount of force to get the vehicle to stop. The vehicle also has really diminished stopping power when this occurs. This seems to occur when more frequently when the brakes are pushed more than once in a short period of time such as stop and go traffic. The vehicle also makes a hissing noise when the brakes are applied. I believe that this could be a bad brake booster. I feel it is a safety issue and may cause an accident.

The brakes have become very difficult to push. They slow down the car, but require intense pressure to bring the vehicle to a complete stop. There is also a slight hissing noise when the brakes are applied. It takes about twice the distance to come to a complete stop than previously. There is no indication of a problem on the dashboard; no warning light has been displaying, but something is definitely wrong. I do not feel very safe when driving.

The contact owns a 2012 Mazda cx-9. While driving approximately 35 mph, the brake pedal was depressed and a loud squealing noise emitted. After applying the brake pedal numerous times, the vehicle came to a complete stop. The vehicle was towed to the dealer and currently being diagnosed. The manufacturer was not notified of the failure. The approximate failure mileage was 95,300. The VIN was unavailable.

The vehicle presents a catastrophic failure in the brake system. The brake pedal gets extremely hard to depress and the effect is minimal. The vehicles stopping distance is significantly increased; if pressed harder the pedal will suddenly get softer and the brake power increases unexpectedly jerking the vehicle to a stop. Additionally, there is a loud hissing noise noted when the brake pedal is depressed. The hissing noise comes from the drivers side of the cabin in the vicinity of the emergency brake pedal. Mazda needs to address this issue as many people have identified concerns in this area. Of course we operate utilizing tombstone management theories; only recognizing a problem once someone is killed.

The contact owns a 2012 Mazda cx-9. While driving 20 mph, there was a loud metal to metal noise coming from the rear of the vehicle. In addition, the gears failed to shift correctly and the oil and engine indicators illuminated. The dealer diagnosed that the brakes needed to be changed. The brakes were replaced, but the failure recurred and worsened. The contact also smelled fuel coming from the vehicle and the vehicle had trouble accelerating. The manufacturer was notified. The failure mileage was 33,000.

Tl- the contact owns a 2012 Mazda cx-9. The contact stated that once the brakes are depressed an abnormal sound could be heard. In addition, the brake pedal descended to the floor of the vehicle. The failure occurred without warning. The vehicle was taken to the dealer where it could not be diagnosed. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was 62,000. The VIN was not provided. Kh.

Brake pedal makes hissing sound when depressed like air leakage; intermittently very difficult to depress brake pedal with a lot of force applied (typically if pumping brake), leading to increased stopping distance/difficult stopping. Occurs when brakes depressed (soft pedal, air hissing); if depressed again in quick succession, very hard to press with significantly reduced stopping power. Occurs whether vehicle standing or in motion.

The vehicle presents a failure in the brake pedal, which gets harder to press and the brake power is diminished, if pressed harder the pedal will get softer and the brake power increases but the sensation of reliability and safety when braking is affected. Also, when the brake pedal is depressed hard a hissing sound is heard.

Car would not stop when backing out of garage. The brake pedal was stiff causing the car to roll off the driveway and into the side yard. We tried to drive the car back into the garage but the brake pedal resistance was inconsistent - from firmer then usual to less firm - making it difficult to stop the car. When the brake pedal is pressed, a "hissing" sound is audible. The Mazda dealership determined the brake booster was losing vacuum. The dealership replaced the brake booster. This is a known Mazda issue, but they continue to manufacture this car without a correction. There should be a mandatory recall. The dealership was not able to tell me definitively if the new brake booster has this flaw corrected. This issue could cause a fatality.

As I was driving I noticed my brakes making a hissing noise of about day. Then, the brake pedal became hard and they failed to work.

Car of 3yr 8mth < 40k mi. Brake not effective, fade very quickly, attempt to lift and reapply brake makes thing worse. Harder to brake. Hear hissing noise, similar to complained by others here. Mazda needs to recall before someone gets killed.