Engine Shut Off Without Warning Problems of Mazda CX-5

The car will not completely shut off. When parking the push button on/off switch is pressed. The car engine shuts off but power is still turned on. This happens randomly. It has taken as much as 20 mins of driving in a parking lot to try and get the car to shut off. First noticed in June, it is not October and it seems to have gotten worse.

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Engine/active accessories would not shut off. After stopped and put the vehicle into the park position, and pushed the start/stop button to turn off the vehicle, it would not shut off. It sounded like the engine shut off but the accessories were active and fully engaged and beeping. I tried pushing off button several times, restarting /shutting off again,and driving to another parking stall, I had to leave my car unlocked, actively engaged with active accessories fully on in my driveway at home, in shopping centers like target, walmart, the mall, and grocery store. Each time when I returned to my vehicle acc were still on. I had to drive the car a bit and keep trying to park until it shut off. The first time this occurred wa approx July- August , 2015 and my car was still under the 36k/3yr warranty and I was told by the Mazda service advisor that it was just a low key battery and I needed to replace it. He said he did a complete diagnostic check and no problem showed up. It occurred intermittently so I believed him. Recently July 2016- Aug 2016 it actually got worse and happened approximately 5 times within one month. I changed batteries three times on two separate keys. The batteries are not the problem or answer and has not resolved the problem. I think this is might be a transmission, engine, ignition or electrical stability control; I don't know, but definitely not a low key battery prob as I was told by Mazda sevice advisor.

Was passing a semi-truck full throttle on a hilly 2 lane roadway. . . . . Engine shut down and multiple dash warning lights came on. . . . Was able to coast to a safe stop and turned off ignition and restarted vehicle. Very scary!! took the vehicle to the dealer and they could not find a problem.

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