Vehicle suddenly loses power while driving. Engine does not turn on, vehicle will run on battery until battery is dead, then putting the vehicle in park once stopped. Vehicle will not accelerate normally since the engine does not turn on. Only goes 10-20 mph. Lights on the dash come on, prompting to keep car on to charge the battery. No code is found when the vehicle is scanned. Dealerships can’t seem to diagnose the issue. This is a safety concern when driving on busy roads or state highways at higher speeds.