Vehicle suddenly did not brake as expected. Brake pedal was hard to press and unresponsive. Brakes made noise while depressed. Vehicle was being driven at the time, and did not have the issue earlier in the day.
2008 Mazda CX-9 brakes complaints
Page 2 of 2: complaints 11 to 30 of 30, newest first, as owners wrote them.
Brake hissing from pedal area and brakes are very hard to press. Difficult to stop vehicle without applying lots of pedal force until a certain point where booster starts working and vehicle stops quickly. Dangerous at first because vehicle doesn't seem to stop without a great deal of pedal force then suddenly stops quickly after more pedal travel. Also, engine runs rough when hissing sound is heard- probably due to loss of vacuum. Problem is at all speeds. It takes a great deal of distance to stop at higher speeds for emergency braking (very dangerous).
I had to replace my tires because of the ball joints and causing my wheel to come off. My breaks sounds horrible even after I had them serviced if it rains really bad I get this cranking noise I have a weird sound to my vehicle right now coming from the front of the vehicle again and not sure what's the problem. I'm afraid to drive the vehicle to fast because I have children what's going on with this vehicle
Tl* the contact owns a 2008 mazda cx-9. While driving approximately 35 MPH, the vehicle decelerated independently and the ABS and tcs warning lights illuminated. As a result, the tires failed to function correctly. The vehicle was towed to an independent mechanic where it was diagnosed that the brake booster needed to be replaced. The vehicle was repaired; however, minutes later, the failure persisted. The vehicle was towed to a dealer where it was diagnosed that the pedal switch needed to be replaced. The vehicle was repaired, but the failure persisted. The manufacturer was notified of the failure. The failure mileage was unknown.
While driving and coming to a stop, the brake pedal went real hard and car would not stop appropriately. This happened multiple times, checked the brake fluid is full as well as changed brakes themselves..problem still there and progressively worse, un drivable because of compromised braking. There is only 75k miles on this automobile. Having the car towed to local dealer, where I was told that mazda has extended the warranty for braking system, which would take care of this problem as well as reimbursement for towing and expenses. This defect is very dangerouse, there was no warning, no warning light illuminated on the dash, I am very fortunate that this was caught before an accident occurred.
Master cylinder leak causing the brake booster to go out as well. Suspension weak and rusty. Mazda refuses to address the problem.
The brakes are hard to depress and the car is difficult to stop. If I start the car and depress on the brakes at a standstill, the pedal fells hard and goes down really far will I hear a "whistling" sound and also a "hissing" like if air is escaping.
My wife was driving our cx-9 with our kids on saturday when the brakes failed. This prevented her from braking at a red light. There were no dash warning lights prior to the incident. The brake fluid was at a recommended level since the vehicle is well maintained. We towed the vehicle to the local mazda dealer (where we originally purchased the vehicle). On removal of the brake booster the mazda dealership found the brake booster failed because it was full of brake fluid. On closer inspection they found the brake master cylinder was cracked which LED to the brake booster filling up and causing the brakes to fail. They said the brake master cylinder was not covered under the factory recall since this issue only happens to 2010-2011 model year cx-9's even though our 2008 cx-9 exhibits the same exact brake master cylinder defect. The brake booster was covered under the factory recall (from mazda notes: perform manufacturers recall ssp93 power brake unit warranty). The only thing that prevented a major accident was this happened early on a saturday morning with light traffic. If this would've happened monday-friday at the same time if would've been a severe accident since it's a very busy intersection during the work week. I truly believe this should be investigated for the 2008-2011 mazda cx-9's.
Tl* the contact owns a 2008 mazda cx-9. The contact stated that the brake pedal was difficult to depress. The contact had to shift the vehicle into park upon coming to a stop due to the failure. The contact also had to allow enough distance between other vehicles due to the brake pedal not completely stopping the vehicle. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 140,000.
I noticed that my brakes made a hissing sound at random times. Brakes would not work as usual. After "stomping" on brake, car continued to move for several feet.
My wife pulled the vehicle shifting gear in reverse with her purse without pressing on the brakes pedal. After the fact, I double and triple checked it, and this vehicle can shift gear without engaging the brakes pedal.
Tl* the contact owns a 2008 mazda cx9. The contact stated that while driving 25 MPH, the brakes failed to stop the vehicle. The contact was able to safely pull over. The vehicle was taken to the dealer for diagnosis where it was stated that the brake booster needed to be replaced. The vehicle was not repaired and the manufacturer was notified. The approximate failure mileage was 40,000.
2008 mazda cx-9 has a master cylinder machine problem. We replaced these items in august of 2011 and in less than 16000 miles we have the exact same failure. The federal safety agency action number pe11026. Mazda has identified a problem with a manufacturing process dor the master cylinder primary plunger that could result in inappropriate surface finish. We are in the process of replacing these exact same parts today! This is an ongoing safety problem and the mazda dealer told me the vehicle was unsafe to drive and the brakes could fail at any time. Our brakes not only had a soft feel but the distance to stop was greatly increased. We have had to replace the master cylinder and vacuum power assist twice in sixteen thousand miles at a cost of approximately $1300.00.
Tl* the contact owns a 2008 mazda cx9. The contact stated that when the brake was depressed, the brake pedal would become stuck to the floorboard and caused an increase in stopping distance. The vehicle was taken to local mechanic whom inspected the vehicle and located the failure at the power brake booster master cylinder. The vehicle was not repaired. The VIN was not available. The approximate failure and current mileage was 190,000.
Brought into the mazda dealer schaumburg,il due to dashboard warning lights came on ; the tcf of light off light ,the red brake light and the stability indicator. The dealer indicated that unaware of any problems related to this incident. Claimed their the brake fluid was low but no leak with the brake fluid. The dealer filled up the brake fluid. ( lights would randomly come on when breaking on hills or inclines) I was working in madison , wi. 8/20/12-8/24/12-same problem with vehicle- with warning lights. Although, now I had problems with the brake pedal and stopping the vehicle in traffic. I brought the cx9 to mazda , elmhurst il. The dealer stated the car had the master cylinder and the power booster were leaking brake fluid and needed to be repaired. The failure miles was 54,400 miles. The repair is going to be $950 to repair. I believe that mazda should pay for this repair since my vehicle is one of 37,000 vehicles with the problem that was not repaired . I don't understand why this isn't being checked during the service check ups and or being recalled by mazda. This repair isn't a normal wear and tear repair and the repair should be covered by mazda.
There have been a multitude of problems on the vehicle (two sets of brakes, tierod, electrical overhaul vacuum hoses...) the major issue has been oil leaking. This past summer (2011) there was an oil leak. The dealer had the car for several days before diagnosing that it was the rear main seal. The seal was replaced (car was at dealer for nearly two weeks.) this fall (2011) oil was still leaking. After several days the dealer contacted mazda corporate and they suggested replacing the transmission, claiming it was not uncommon. The dealer replaced the transmission. Winter/spring 2012 oil still leaking, car is currently at the dealer - claiming it is the rear main seal. Again? Wouldn't that have been replaced with the new transmission?
Tl* the contact owns a 2008 mazda cx-9. The contact was driving 20 MPH when the brakes were depressed and the vehicle failed to stop properly, and crashed into a gate. The crash caused no injuries and the police were not contacted. The same failure recurred on multiple separate occasions and without warning. The vehicle was taken to the dealer where the dealer confirmed that both the master cylinder and power booster were leaking brake fluid and needed to be replaced. The manufacturer was contacted. The vehicle was repaired. The failure mileage was 68,000 and the current mileage was 68,200. Updated 04/26/12*lj according to the repair invoice, the brake booster was leaking due to corrosion from brake fluid leaking from the master cylinder into the booster. The brake master cylinder and booster were replaced. Updated 04/27/12
Tl* the contact owns a 2008 mazda cx-9. The contact stated that the brake pedal was partially depressed and the contact had to keep pumping the brake in oder to get the vehicle to stop. The contact took the vehicle to the dealer and was told that the vacuum booster failed. In addition, the brake fluid was leaking into the booster. The vehicle was not repaired. The failure and he current mileage was 78,175.
Tl* the contact owns a 2008 mazda cx9. The contact stated that while driving approximately 20 MPH, the brake warning indicator illuminated on the instrument panel. The indicator remained illuminated until the engine was turned off. The failure had not been diagnosed or repaired. The manufacturer was not made aware of the failure. The contact stated that the defect could possibly be contributed to an internal brake fluid leak. Currently, there was an open investigation under the federal safety agency action number pe11026 (service brakes, hydraulic:foundation components:master cylinder). The approximate failure mileage was 46,000.
Lately, my cx-9 does not come to a complete stop within the expected distance (stop sign or signal), for the usual brake pedal travel. I had to lift my foot and brake hard to bring it to stop. Otherwise, cx-9 remains a pleasant vehicle to drive and ride.
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