2021 Lincoln Corsair SUV FWD

Went to unlock vehicle but found it was unlocked. Tried to start car and noticed there was nothing in the car that worked, interior lights, dashboard monitors, all computer functions were out and could not open the rear hatch. Called Lincoln assist and they sent AAA. They tested battery and it was good, tried a jump start and nothing happened. Saw on the internet (Lincolnforum.org) that disconnecting the battery and reconnect the entire system will return to normal. Tried this with the tech from AAA and it worked. 2 hours on the road after the incident stopped for gas and shut off the car and when I tried to start the car the whole incident was back. Again had to disconnect battery and reconnect and it returned to normal. Please find out what is causing this before it shuts down while driving???

While driving on the freeway with the cruise set at 70MPH, the sign recognition software all of a sudden picked up the 35MPH speed limit from the adjacent service drive and abruptly slowed the vehicle down to 35MPH. This happened on another freeway which had a service drive so there is definitely some issue with the sign recognition software. This issue occurs in the same location on these freeways so it is repeatable. Reported to the dealer but they can't find an issue and have never heard of this. I am reporting this in case other vehicles could be affected as it could be very dangerous in heavy traffic to abruptly slow down that dramatically.

The transmission (possibly the start/stop) jerks and is intermittent. When coming out of the stop, the acceleration is sputtering. The dealer said the problem is known to Ford but there is not yet a fix. The vehicle has less than 10000 miles travelled.

THE MAIN CABIN HEATING SYSTEM DOES NOT REACH AND MAINTAIN DESIRED TEMPERATURE SETTINGS WHETHER IN AUTO MODE OR IN A MANUAL SELECTION. HEATED STEERING WHEEL HEATS UP MOMENTARILY AND THEN COOLS DOWN EVEN THOUGH THE BUTTON IS STILL ON. DEALER TECHNICIANS WERE ABLE TO RECREATE THE SAME ON OTHER CORSAIRS ON LOT. MY OPINION THINKS IT LIES IN THE COMPUTER MODULE THAT CONTROLS THESE FUNCTIONS AND MAY NEED TO RE=PROGRAMMED. HAVE NOT TRIED THE A/C MODE AS WE ARE IN LATE WINTER. I PURCHASED THE VEHICLE IN THE LAST 30+ DAYS AND ONLY HAVE 600 MILES ON THE VEHICLE. MY PREVIOUS LINCOLN MKC WAS EQUIPPED SIMILARLY AND NEVER HAD THESE ISSUES IN 3 YEARS.