This is the third episode I have had with my 2019 cx3. After driving on freeway for 20 + miles. I get onto another highway with turnoff & lights & go under a turnpike overpass, which is dark, & my entire dash goes dark. I should add that it was raining, headlights on because it was dark, radio on, heater on (37 degrees). I went down the road & turned around and went back under overpass & cycle repeated. No instrument lights or radio. I have had vehicle into dealership 2 times before for same problem. My vehicle only has 2000 miles as I bought it new. Anyone else experiencing this? I am concerned obviously. As a side note I remember the days in my Ford escort you couldn’t run the air conditioning as the same time going up steep hills. I have another appointment today at dealership & called Mazda as I still have my reference number from last year.