Our MX 12v just failed last night. The car won't unlock with either key fobs. The app cannot connected to it. They can't toll it to service because the charger is locked to the port at our garage. Tesla thinks it is a 12v failure and will send out Mobile Tech. We have nothing after market connected to the car and the car is just under 2 years. Drove over 100 miles the day before and no 12v warning. I wonder why the 12v would die suddenly overnight... it was not even cold here.. day time temp over 80.