Tl* the contact owns a 2012 nissan sentra. the contact stated that the lock mechanism failed to work in all four doors. the contact also stated that the key fob was replaced twice. the doors would not open from inside the vehicle. the contact had to enter the vehicle manually. the vehicle was taken to the dealer who stated that the lock mechanism needed to be replaced. the vehicle was not repaired. the manufacturer was notified of the failure. the approximate failure mileage was 50,000. the vin was not available.