2023 Mazda CX-30

Unexpected Automatic Emergency Braking Activation at Highway Speeds in Cold Temperatures. Description: I am reporting a safety issue with a 2023 Mazda CX-30 involving the collision avoidance / automatic emergency braking system. While driving at highway speeds, the system activates a forward collision warning (audible alert and dashboard indicator), followed almost immediately by automatic braking, even when there are no vehicles, obstacles, or pedestrians ahead. Conditions When Issue Occurs: * Ambient temperature: below ~40°F (4°C) * Road conditions: cold, often icy or snowy * Speed: highway speeds 45-75 * Environment: clear roadway, no visible hazards * visibility : clear System Behavior: * Audible warning and visual alert activate * Automatic braking occurs approximately 0.5–1 second after the warning * No obstacle is present to justify intervention Safety Risk: This presents a serious safety hazard because: * Sudden braking at highway speeds creates a high risk of rear-end collision * The warning-to-brake interval is extremely short, leaving little time for driver override. * Occurs in low-traction conditions, increasing risk of loss of control. * The event is unexpected and not predictable by the driver. Frequency: * Occurred multiple times under similar cold-weather conditions. * Appears repeatable based on temperature range. Attempts to Resolve: * Sensors/camera appear clean and unobstructed. * No prior collision damage to the vehicle. * Issue persists despite normal operation otherwise. * Similar reports observed from other owners in online discussions. This is not a one time occurrence, in the section below, i noted the last event but this is a daily occurrence in temperatures below 42F.

While driving down the road a vehicle in front of me braked to stop for a bus loading kids, as I stepped on the brakes nothing happened and the vehicle surged forward. After the accident I viewed the vehicles onboard system status and it had logged several errors including errors to the activsense driver assist control. I used the vehicle’s emergency assist button and contacted 911, and reported the incident to ride share and contact my spouse. Police report lists the wrong time and vehicle but does have the correct vin number

This is already related to Mazda's recall #23V-275 BRAKE PEDAL TRAVEL CONCERN. My car was already involved in crash which I firmly believe that it was related to the brake pedal issue since the brakes didn't hold off the car and the brake assist system was never activated during the accident. Mazda is claiming that my ABS system serial number is a good part, and their dealership claimed that the problem couldn't be reproduced after they held the car for 11 days! I made several attempts to contact Mazda USA but I am not getting tractions for weeks.

I'm reporting significant safety issues. All are related as they indicate that the error rejection for the sensors are not properly calibrated. These false positive errors are dangerous. It affects the automatic emergency braking, forward collision, blind spot, and cross traffic warning systems. 1. What component or system failed or malfunctioned, and is it available for inspection upon request? The sensor responsible for detecting road impediments and cross-traffic/blindspots. I'm not sure how to provide it for inspection. How was your safety or the safety of others put at risk? YES - when safety systems frequently have false positive indicators (auditory and visual). This has caused the car and driver to respond to a threat that is not real. This can also cause ignoring true positive indicators (alarm fatigue) and uncertainty of the systems ability to respond to true negative events. Has the problem been reproduced or confirmed by a dealer or independent service center? No, but they are incompetent. I was told the issues might be: bugs on the sensor, maybe a plastic bag floated by the car, maybe the road was shiny, maybe there was something and I didn't see it. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? Not to my knowledge. Were there any warning lamps, messages or other symptoms of the problem prior to the failure, and when did they first appear? No, this is a brand new vehicle (2023) and we are the only drivers. These issues have been happening since we started the lease. The cross/blind spot false positive happen daily. The braking/front end collision have only happened ~4 times.

I was driving my car on the highway. The car automatically deployed the emergency braking system with no objects in front of the car. The car automatically braked then flashed the brake warning indicator. Car mad itself come to a complete stop. I began researching and found that others have had issues with “phantom braking” when the car has collision avoidance technology. This needs to be seriously investigated as it is a safety hazard.