Gas Recirculation Valve (egr Valve) problems of the 2010 Acura MDX

Engine has quit suddenly without warning while driving on 3 or 4 occasions. Have been able to restart by turning ignition switch to off (which requires vehicle to be put into park) then turned back to start. Latest incident was on a divided city street yesterday while stopped at a traffic light just past a railroad crossing; vehicle behind me had stopped on the railroad track. As the traffic light changed to green a train was approaching. . . With crossing gates coming down and red lights flashing. That's when my engine just suddenly stopped running. Driver behind me started frantically blowing his horn. Luckily I was able to restart the engine and drive away which allowed the car behind me to get off the track. Outside temperature in the area was 80 degrees per nws. I have wondered if my vehicle's bluetooth could be affecting the engine ignition or computer in some way so as to cause the engine to suddenly stop. So, some weeks ago I turned the vehicle's bluetooth off. I had no more engine stoppages until yesterday when the railroad crossing gates and red lights activated close by. Now wondering if there could be some type of radio wave or electrical trigger involved in this engine stoppage problem.