I have a 2013 Limited, went to open it this morning with the fob and my guess is the car battery was dead. So I tried the mechanical key and it didn't work. I was finally able to get into the car, pop the hood and give it a charge. The fob works perfectly, unlocks and locks the doors just fine. Still the mechanical key goes in fine and turns but will not open the drivers door lock. I tried two spares and they don't work either. Any thoughts or suggestions? TIA