Neither of my smartkeys seem to be communicating with my car (lock/unlock, etc). The batteries seem to be fine in each. I did change the battery in one just in case, but that didn't resolve the issue. I have Keyless-Go so have been able to access with that.

Any ideas as to what may have happened / how to resolve? Communication issue between fobs and the car that isn't affecting the keyless access?

 

Same thing. Had to take it to the dealer, and they updated the software for the keyless and stop start system