I have a 2006 Durango and a few weeks ago my key fob was working to unlock the door and now it does not. I have bought two sets of new fobs and through a lock smith we have determined that my original fobs along with the two sets I bought are transponding but car is not receiving signal. The locksmith said it could be a fuse and/or possibly the receiver. It would be nice to be able to get my doors to unlock again with FOB so any advice would be helpful.

Is there a certain fuse I need to look at, and/or how I could I determine if it is indeed the receiver without getting into the steering column where I believe receiver is located?