Sorry if I'm going over old ground here. My 2011 370z Cab with just 30000 miles on the clock, has gradually left me with an unresponsive key fob. I have tried both keys with the same outcome. I cannot operate the door lock without using the actual key in the door, and the car will not start unless the fob is placed in its slot to the RHS of the steering wheel. The dash says No Key until I do this. As I said earlier this has been intermittent until now. I tried lifting the fuse as recommended in an earlier post, but without success.