2016 Town and Country suddenly loses all power. Dash goes completely black and vehicle shuts down. It has started right back up but last time the air bag light stayed on until I shut it down and back on. This vehicle has 66,000 miles and well taken care of. I took it in , in April because the air conditioner was not blowing cold air. Since then it seems it’s falling apart. It’s been in and out of service. Would not go into reverse so I took it back in and they replaced the transmission. Then the new transmission stopped switching gears so it went back in . Got it back and now power shuts down with no warning . I have no check engine light or any warning lights. Is this a common problem ? Starting to feel desperate .