2024 Mazda CX-90- Plug-in Hybrid forward collision avoidance problems

“The contact owns a 2024 Mazda CX-90. The contact stated that while her husband was driving 70 MPH with the cruise control activated, her husband attempted to deactivate the cruise control before exiting the highway; however, the cruise control failed to deactivate. The brake pedal was depressed, but the brakes failed to stop the vehicle. The contact's husband exited the highway and drove into the median to avoid crashing with other vehicles. The driver turned the steering wheel, causing the vehicle to flip and then slam into the ground, fracturing both axles. The cruise control then deactivated. The contact stated that only the front driver's side air bags deployed. The driver suffered hip and arm bruises, while the contact suffered a lump on the head, and as bruises on the collarbone and arm. The driver received medical attention at the scene, but the contact declined. A Police report was filed. The vehicle was towed to a tow yard but had not yet been declared a total loss by the insurance company. The contact stated that prior to the failure, the message "Trailer Attached in Tow Mode" was displayed and the vehicle was taken to the dealer, who replaced the…”

“The vehicle lurched to a complete stop and engaged the parking brake while entering the on ramp at FDR bridge in NYC. I had my whole family (7 of us) in the vehicle. Cars behind us had to slam on the brakes or swear to not hit us. The worst part is, the car had no option to put it into neutral to move the vehicle to a safe location. I sat praying for 45 minutes while we waited for a tow truck. Cars were flying past us as we were blocking 2 lanes of traffic, one of which was the on ramp. They could not see us as they were coming around a corner. Several accidents almost happened. There was nothing we could do but sit there. This is a known issue with Mazda CX 90 2024 PHEV system. Mazda did not warn me in any way that if the vehicle has an issue with the PHEV system, it was going to disable the vehicle to the point that you are unable to put it into neutral. There was no way to disengage the parking break. The vehicle was towed twice with the break engaged.”

“The contact owns a 2024 Mazda CX-90. The contact stated that while driving 70 MPH, the dynamic cruise control feature failed to function as intended. The contact stated that the vehicle slowed down and then independently accelerated. The contact depressed the brake pedal to stop the vehicle. The message “Steering Assist Unavailable” was displayed. The vehicle was taken to the dealer; however, the failure was not duplicated. In addition, the contact stated that the vehicle was taken to several dealers, however the failure was not duplicated. The contact informed the dealers that the vehicle needed to be driven on the expressway for the failure to occur. The contact stated that the failure did not occur while driving the vehicle at slow speeds on the local streets. The contact stated that the failure was persistent while driving on the expressway. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure, and a case was filed. The failure mileage was approximately 11,000.”

“On March 27, 2026, while driving approximately 20-35 mph on a city street in clear daytime conditions, my vehicle unexpectedly activated Smart Brake Support (SBS) and applied the brakes hard enough to bring the vehicle to a complete stop. There was no vehicle directly in front of me and no obvious obstruction that would have required emergency braking. Immediately prior to braking, the vehicle displayed brake warnings and alerts inside the cabin. The sudden braking created a safety risk because the vehicle came to a complete stop in an active travel lane without warning. Had another vehicle been following closely, a rear-end collision could have occurred. The event was reported to my Mazda dealership, Herzog-Meier Mazda, on March 30, 2026, the next business day after it occurred. The dealership advised that the vehicle should not have behaved this way because the applicable software update related to the Smart Brake Support system had already been installed. The vehicle was subsequently returned to the dealership for further investigation on April 22, 2026, and remained there for an extended period while Mazda reviewed the incident. Mazda regional technical…”

“1) What component or system failed? The issue appears to involve the vehicle’s electrical system and hybrid system, as well as brake-related electronic systems. The vehicle displayed multiple warnings including “Hybrid System Malfunction” and “Critical Vehicle Malfunction.” The electronic parking brake system was also affected during the incident, including a situation where the brake could not be released while the vehicle was in motion. The affected components are available for inspection upon request. 2) How was safety put at risk? Safety was put at risk because the malfunction occurred while driving and involved critical system warnings and brake-related issues, including the inability to release the electronic parking brake. The sudden appearance of a “Critical Vehicle Malfunction” warning during operation created concern about potential loss of vehicle control and safe braking capability in traffic. 3) Has the problem been reproduced or confirmed by a dealer? The issue has not been fully resolved. The vehicle previously underwent service for a high-voltage hybrid battery replacement, but the current symptoms continue to occur repeatedly. The problem has…”

“We have had Multiple I-Sense(safety system).It will shutdown whwnever it feels like it no matter the weather.We have had at Mazda 7 times and they have applied several programming updates withouit success. We have also have Apple wireless airplay for directions and phone failure 100's of times and have had it Mazda fro the same 7 times to fix to no avail”