2019 Mazda MAZDA3

To whom it may concern, I was on a back road late in the evening not far from home [XXX] and a small deer ran into the road. I needed to brake to avoid hitting the deer. After breaking, a Brake System Malfunction warning message and i-ACTIVESENSE System Malfunction warning illuminated on my dashboard. I brought the car to a Mazda dealership the next morning. The technician determined that the brake fluid level sensor became stuck, requiring replacement of the brake fluid reservoir and the brake fluid level sensor. What failed: The repairs include replacement of the Brake Fluid Reservoir and the Brake Fluid Level Sensor. This is the link to the dealer report [XXX] . No one other than the dealer has inspected these parts to my knowledge. There was no accident of any kind. I personally felt unsafe after these parts failing and reached out to Mazda Customer Care to request investigation of the issue. The case manager just called me back today to say they could not help me. Mazda has denied warranty coverage, claiming the parts are not covered. However, I really do feel this is a critical safety system component that failed after normal emergency use with no collision or impact. Why I feel this is a safety concern: - The brake warning system became unreliable after a single emergency stop. - My car only has 42k miles and is in excellent condition and is fully dealer serviced. - A driver could lose the ability to receive proper brake system warnings if this failure occurs again. - A critical brake sensor should not fail under normal driving conditions, and its failure could lead to delayed driver response in an actual brake fluid loss scenario. It makes me worry for the future. For your consideration: I believe this represents a safety-related defect that should be investigated, as it affects the reliability of the brake system warning indicators in the 2019 Mazda 3. I appreciate your time and consideration. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2019 Mazda Mazda3. The contact stated while driving 35 MPH, the brake warning light illuminated and the vehicle would brake suddenly without the driver depressing the brake pedal. The failure had become recurring. The contact had taken the vehicle to a local dealer where it was diagnosed and determined that the failure could not be duplicated. The vehicle had not been repaired. The contact researched online and related the failure to NHTSA Campaign Number: 19V907000 (Forward Collision Avoidance). The manufacturer had been informed of the failure. The failure mileage was approximately 15,000.

MAZDA DEALER IS REFUSING TO UPDATE SOFTWARE PER SSPC5 TO CORRECT A SAFETY ISSUE RELATING TO THE MRCC (MAZDA RADAR CRUISE CONTROL) UNLESS I FIRST AGREE TO HAVING MAZDA CONNECTED SERVICES INSTALLED ON MY 2019 MAZDA 3 SEDAN (CSP06). WHEN I PURCHASED MY NEW CAR MAZDA CONNECTED SERVICES WAS NOT INCLUDED IN MY CAR. I AM NOW BEING COERCED INTO HAVING MAZDA CONNECTED SERVICES INSTALLED INTO MY VEHICLE BEFORE THEY WILL CORRECT A SAFETY ISSUE REGARDING A KNOWN ISSUE WITH THE ADAPTIVE CRUISE CONTROL. MY VEHICLE IS STILL UNDER WARRANTY BUT UNLESS I AGREE TO HAVING THEIR TELEMETRICS CONTROL UNIT (TCU) INSTALLED, THEY REFUSE TO INSTALL THE SOFTWARE TO CORRECT THE DANGEROUS ADAPTIVE CRUISE CONCERN PER SSPC5.

I WAS ACCELERATING AFTER A TRAFFIC LIGHT TURNED GREEN AND THERE WERE NO CARS IN FRONT OF ME WHEN THE CAR STARTED BRAKING AUTOMATICALLY AND CAME TO A FULL STOP. LUCKILY THE CAR BEHIND ME WAS ABLE TO STOP IN TIME BUT THERE WAS NO WARNING AND NO REASON. I COULD HAVE BEEN REAR ENDED. I PULLED OVER AND CHECKED THE TWO SENSORS AND NEITHER ONE WAS BLOCKED (IT HAD SNOWED HERE RECENTLY). I'M HONESTLY SCARED THIS COULD HAPPEN AGAIN AND MAZDA IS SAYING THERE ARE NO OPEN RECALLS ABOUT THIS FOR MY CAR AND THAT THE CAR IS FINE.

WITHOUT CAUSE: THE VEHICLE WILL SUDDENLY DETECT THE PRESENCE OF ANOTHER VEHICLE AND/OR SENSE AN IMMINENT COLLISION AND SUBSEQUENTLY APPLIES THE AUTOMATIC BRAKING SYSTEM, CAUSING THE VEHICLE SPEED TO SUDDENLY DECREASE. THIS HAS HAPPENED REPEATEDLY OVER THE COURSE OF DRIVING THE CAR AND RESULTED IN BEING ALMOST REAR ENDED NUMEROUS TIMES. THIS IS A VERY DANGEROUS SCENARIO AND COULD EASILY CAUSE A SEVERE ACCIDENT, ESPECIALLY ON THE FREEWAY WHEN EVERYONE AROUND IS GOING REALLY FAST AND NEEDS MORE TIME TO REACT TO THE SUDDEN AND SHARP SLOWING DOWN OF MY VEHICLE. THIS HAPPENS IN VARIOUS LOCATIONS, FREEWAY, HIGHWAY, OR IN THE CITY. I HAVE TAKEN THE CAR TO THE DEALERSHIP NUMEROUS TIMES TO HAVE THIS FIXED, BUT GET A DIFFERENT ANSWER EVERY TIME I TAKE IT IN. BUT THE PROBLEM REMAINS UNRESOLVED AND CONTINUES TO PLACE ME, MY PASSENGERS, OTHER DRIVERS, AND EVEN PEDESTRIANS IN HARMS WAY.

TL* THE CONTACT OWNS A 2019 MAZDA MAZDA3. THE CONTACT STATED THAT THE BRAKE AUTO ALARM ACTIVATED CAUSING THE BRAKES TO ENGAGE. THE CONTACT STATED THE VEHICLE WAS INCLUDED IN 19V907000 (FORWARD COLLISION AVOIDANCE) FOR WHICH THE REMEDY WAS COMPLETED. THE CONTACT STATED THE FAILURE PERSISTED. THE CONTACT STATED THAT THE VEHICLE NETWORK MALFUNCTION WARNING LIGHT, VEHICLE INSPECTION NEEDED, SAFETY AND DRIVER SUPPORT SYSTEM DISABLED AND FRONT RADAR OBSCURED WARNING LIGHTS WERE ILLUMINATED. ADDITIONALLY, THE LANE DEPARTURE ALARM ACTIVATED, AND THE AUTO CORRECT ACTIVATED CAUSING THE VEHICLE TO PULL BOTH TO THE LEFT AND RIGHT. THE CONTACT TOOK THE VEHICLE TO THE DEALER (RUSS DARROW METRO MAZDA - ADDRESS: 11330 W METRO AUTO MALL DRIVE, MILWAUKEE, WI 53224 PHONE: (414) 409-9201) WHO PERFORMED THE RECALL REMEDY ALONG WITH 8 OTHER UNSPECIFIED RECALL REPAIRS HOWEVER, THE FAILURES PERSISTED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURES AND A CASE WAS FILED. THE APPROXIMATE FAILURE MILEAGE WAS 1,491.

TL* THE CONTACT OWNS A 2019 MAZDA 3. THE CONTACT STATED THAT THE VEHICLE FAILED TO IMMEDIATELY ACCELERATE AFTER THE BRAKE ASSIST WAS ENGAGED. AS A RESULT, THE CONTACT'S VEHICLE WAS REAR ENDED BY ANOTHER VEHICLE. THE AIR BAGS DID NOT DEPLOY. A POLICE REPORT WAS NOT FILED AND THERE WERE NO INJURIES SUSTAINED. THE VEHICLE WAS NOT TAKEN TO A DEALER OR INDEPENDENT MECHANIC FOR DIAGNOSTIC TESTING OR REPAIRS. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 7,000.