2018 Nissan Rogue brakes problems

Leased a 2018 nissan rogue in august of 2018 and started having electrical issues with the vehicle. While driving, the navigation screen, center cluster where the speedometer is and all air condition and electronics would power off and restart itself, as if I was cranking the vehicle up. Took the car in for service and the dealership stated they had never seen this issue before and that they didn't know how to fix it. The dealership called me the next day stating the car was ready.

Aeb activates when driving causing vehicle to stop suddenly for no reason. There is nothing to trigger this, vehicle just stops. This has happened 5 times to me. Nissan sent out a notice that there was a software upgrade available to eliminate this from happening. Once software was upgraded, happened 1 time again as I approached railroad tracks.. Took to dealer,vehicle currently has 12,700 miles, dealer unable to duplicate problem. Nissan has acknowledged "no fix" and to return to dealer if problem occurs again.