Brake Sensor Problems of Mazda CX9

1. The navigation has a frosted crackle appearance framing the screen. It is difficult to read the navigation when needed. I know this has happened to other models of this vehicle and those were recalled and covered. 2. The brake senor keeps going off stating "Smart brake system malfunction". This goes off repeatedly while driving. 3. Then a second message pops up and reads "front radar sensor system malfuntion".

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This incident happened on 31st July, when my wife was driving this car on highway 4 martinez, CA at around 5. 00 pm with our daughter (2 years old) returning from daycare. She was driving at approx 60 mile/hr, when the car started giving audio visual warnings on multiple failures and the car started slowing down without responding to the gas pedal and engine propulsion reduced to 'zero'. My wife panicked and was luckily able to pull over on the curb side safely, even though traffic was very high. She stopped the car and turned off the engine and waited for 10 mins and restarted the car multiple times and made sure that no more warnings are displayed, before driving again, however the 'engine warning light' stayed on. After a while she drove home almost 40 miles away very carefully without using any cruise control. Here are the warnings, that came on during this failure, pictures attached. Engine malfunction light. Tire pressure indicator. Stability control indicator. Temperature indictor cruise control failure warning message �front radar sensor system malfunction� warning message �forward Smart city break malfunction� after a day we dropped the car to Mazda dealership for inspection and they found multiple failure codes and they did necessary repair (inspection and repair invoice attached). Even before this incident , we reported multiple times to dealership that the car central information system abruptly shuts down during drive. But they always said that there was no problem. This incident on a freeway was very serious, my family or other drivers could have been in a injury accident because of this issue with Mazda.

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When driving at 35-50 mph, my 2016 Mazda cx-9 periodically brakes suddenly while driving to a scrubbing forceful stop tossing things off the back seat, placing me in danger of a rear-end collision. Sometimes a very quick beeping sound is made, "b-r-a-k-e" appears on the panel in large letters --- then the car automatically comes to a sudden stop or it occurs with no notice. I have taken it to the dealer 3 or 4 times only to be told that they could find nothing wrong. No objects of vehicles were immediately in front of me and the sensor was clean when this has occurred. This sudden stopping has occurred on the freeway, in rush hour traffic and on city streets. This has occurred at least 6 times since purchased 03/17/17. I am fearful that this problem will result in injury or death to me and others.

My daughters 2007 Mazdacx-9, right rear wheel bearing has been replaced 3 times in the first 46000 miles of ownership. The vehicle was purchased new and parts have been replaced at no cost. Have been made aware there is a service bulletin from the factory stating rear bearing problem is due to an improperly installed or mishapen abs sensor. Bulletin states will only be replaced free during warranty. This problem could have serious ramifications to occupants if not permanently repaired because abs sensor is involved.

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We have had our Mazda cx-9 since 2007. At 58,000 miles we noticed a "humming" noise. We took the vehicle into the Mazda dealership since it was still under warranty. We got the run around stating it was our tires; however, it turned out the front wheel bearings were bad. They replaced the bearings and one year later we are having to replace the rear bearings. Through research we are finding that Mazda has a service bulletin issued 2/1/2008 about the rear bearings. Basically stating the noise is from an improper shape of the abs sensor and this is only covered if there is still a warranty on the vehicle. My question is if they know this is a problem then why is this issue not recalled because a frozen bearing is and can be very dangerous. Mazda refuses to help replace our rear bearing since we are now at 74,000 mile and our warranty is out. All we keep getting is a run around by our local dealerships. We also have had problems with our driver side mirror. Mazda replace the mirror a few weeks after we bought of cx-9 but it still shakes.