2017 INFINITI QX50 Structurebody Problems

Engine shut off while driving 45mph with no prior warning

SENSOR ON MY HANDLE AND THE KEY QUIT WORKING OVER THIS PAST YEAR MY CAR HAS BEEN AT THE SERVICE DEPARTMENT FOR DAYS AND WEEKS AT A TIME FOR THE SAME ISSUE DEALERSHIP HAS CHECK ALL SETTING THEY HAVE CHANGED THE BATTER THREE TIMES IN THE CAR AND TWICE IN THEY HAVE CHANGED THE BATTERY IN THE REMOTE , I'M NOW TOLD THAT THEY JUST CHANGED THE DOOR HANDLE AND WAS TOLD THERE IS NOTHING THEY CAN DO ABOUT IT, AND WAS ASKED TO PICK UP THE CAR , I STRESSED THAT I WILL BE OUT OF WARRANTY AND I DON'T WANT TO HAVE THIS SAME PROBLEM HEN ITS EXPIRED OR TRANSFER OR SELL TO SOMEONE ELSE TO INHERIT THIS ISSUE. PLEASE NOTE ,THE PUSH BUTTON ON THE HANDLE DO NOT WORK ON THE PASSENGER SIDE, AND THE PUSH BUTTON DO NOT WORK ON THE HANDLE ON THE DRIVER SIDE...