Automatic Emergency Braking problems of the 2018 Mazda CX-5

While driving through town the braking system malfunctioned and the car came to a stop in the middle of the road with messages on dash saying the Smart city braking support was malfunctioning as well as brake assist. Engine light came on as well as traction control light right after the car coming to a sudden hard braking stop. Drove straight to shop to check engine code which was p0882. I am so afraid of this happening on the highway with my daughter in the car. There is a recall for this system but my car isn’t under the recall so I'm sure there are others that are having the issue but aren’t covered under the recall either.

Multiple instances of phantom braking, which resulted in two instances where we were just inches from being rear-ended. The circumstances of the phantom braking are similar, and has occured many times. Circumstances of phantom braking are as follows: vehicle in front in lane makes right hand turn from lane (with or without turn signal or braking). The vehicle in front typically has exited the lane, and the Mazda emergency brakes hard! variable vehicle acceleration/deceleration dynamics factors: the Mazda could be coasting, decelerating with brake litely applied, accelerating in lane (because vehicle has fully exited lane), accelerating and exiting lane (go around turning vehicle). Variable turning vehicle rear lights (signals, brake lights) factors: the turning vehicles can be braking or not, turning with or without signaling- it does not matter. The Mazda will brake hard regardless. This may be an extension of the same: when traveling on an interstate highway, nominally at the posted speed. When a faster vehicle safely accelerates into the Mazda’s lane, the Mazda will brake hard. The Mazda does not recognize that the vehicle entering the Mazda lane is accelerating, nor does the Mazda seem to understand (anthropomorphism) the context (dynamics) of the situation (accelerating merging traffic). Hard braking in these circumstances has resulted in several near misses being rear-ended. The request for date below should be “na”, because the phantom braking has happened many times.

Was driving at low speed and out of nowhere the warning lights came on , Smart city , abs, among others. It's caused by this vehicles front facing camera and or front radar emblem malfunctioning causing the vehicle to slow down , low power , and steering wheel jerking making mechanical sounds. There's a TSB as well.

Automatic emergency brake comes on at random. Driving at medium speed, no cars in view, car brakes and dashboard displays emergency brake. Has not yet been inspected by a dealer because car is out of warranty. 2018 Mazda cx5 with only 19,000 total miles driven.

Situation: driving uphill on hwy 120 on new priest road, big oak flat, CA, two lane mountain road. Slow car in front of me and a delivery truck tailgating. Slow car eventually moves aside in a turnout and I accelerate to open up space between myself and what I thought would be the truck but somehow the slow car returned to the driving lane ahead of the truck. I continue to accelerate to attempt to open up space between myself and the car behind me when I lost power, the car behind me moves to the opposing traffic lane to avoid rear ending my car that is running in degraded mode (accelerator has no effect, basically moving on idle power) and narrowly misses an oncoming car as I move towards the right edge of the right lane. Truck behind me has to brake hard to avoid rear ending me. There was no shoulder to pull over to at that location immediate location. I pull over a few hundred yards further at a safe location. Grade was perhaps 4% to 6%. Weather: hot 90 degrees speed: accelerating from 35 to 50 mph (guess) diagnostic lights: Smart city braking system failure warning, plus a lot of other warning lights lit including check engine light. Aftermath: I pulled safely over, stopped the engine, waited a while and restarted the engine and the car returned to it's normal driving behavior and completed my trip. Other information: this is the 3rd occurrence of this behavior. Each time I have had Mazda look at the problem. 1st occurrence they replaced the cylinder coil, 2nd occurrence they replaced a spark plug for misfire. 3rd occurrence, to be determined.