Brake Fluid Leak Problems of Mazda CX9

Tl the contact owns a 2008 Mazda cx-9. While driving approximately 30 mph, the vehicle hesitated to stop when the brake pedal was depressed. The vehicle was taken to an independent mechanic who stated that the brake boosters failed and were leaking brake fluid from the master cylinder. The contact researched online and found an extended warranty for the Mazda cx-9 vehicles. The dealer (morrie's inver grove Mazda, 10 mendota rd e, inver grove heights, mn 55077, (651) 691-4873) stated that there was an extended warranty specifically for the 2009 Mazda cx-9 models, but it had expired. The manufacturer was not contacted. The failure mileage was 156,000.

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We have 2015 Mazda cx-9 with 8400 miles that has a leak on the break master cylinder. Which the dealership was denying to be a leak because they saw an old dry debris on top of the fluid depot. But have it checked to an outside mechanic because we've been having a shimmy problem when braking for moths and they still can't figure as to what is wrong with our vehicle. All they are saying is they cannot duplicate the problem that I am saying. To cut the long story short we brought our vehicle to their service again to fix the break fluid leak on the cylinder but they are saying they will not fix it because theres enough fluid on the reservoir and they are saying that the fluid might have come from the cap because of an old leak debris. But I told them that I will not going to be that much fluid underneath the break booster and aound that area. But they still insist that they're not gonna fix it. Probably they are waiting for us to get hurt before they will action on it.

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I was driving in my Mazda 2011 Cx9 SUV when I pressed on the brakes and they would not engage. I had to press repeatedly, extremely hard in order to get the vehicle to stop. I have taken the car into my Mazda dealer who is saying that I have a problem with the master cylinder leaking fluid into the booster. Mazda has not sent a recall for the master cylinder only for the booster. This is a very dangerous situation and one that needs to be addressed before someone gets into an accident. This car is 2. 5 years old and has 42000 miles and should not be having these problems. Mazda needs to honor the repair and fix this problem.

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Brake master cylinder leaked fluid into the brake booster causing loss of boost resulting in extremely reduced braking function.

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The contact owns a 2009 Mazda cx-9. The contact stated that while driving approximately 40 mph, excessive force had to be applied to the brake pedal in order to bring the vehicle to stop. The vehicle was taken to a private mechanic where the contact was informed that there was fluid leaking from the master cylinder to the power booster. The contact was also informed that the power booster needed to be replaced. The manufacturer was not notified of the failure. The vehicle was not repaired. The approximate failure and current mileage was 38,000.

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/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.

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.

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 NHTSA action number pe11026 (service brakes, hydraulic:foundation components:master cylinder). The approximate failure mileage was 46,000.

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.

Brake vacuum booster failed, brake fluid leaking into vacuum system.

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