Hey guys. I have a 2011 Nissan Maxima. Recently I was doing an interior mod to the head unit which required me to disconnect the battery. After reconnecting the battery, everything worked well, except i noticed something weird with my fob. The fob is now working terribly. The doors have trouble unlocking with the key in my pocket, as well as the trunk. The range of the key seems to have been cut in half, as I used to be able to start my car from inside with ease, and now It won’t be within range until i’m within about 10-20 feet of the car. Does the key need to be reprogrammed? I would really like to avoid going to nissan as they rip me off every single time. Any insight is very appreciated. I’ve also tried replacing the batteries, and the spare key. Neither have showed any help.

 

The fob needs to be in the car (in the cubby hole it rides in the dash) when you reconnect the battery. The car does a handshake-like process with the fob when the electronics come back online, so the two radios need to be in close proximity. There's another thread about this on the forum but I don't have time to find it right now. The fob being in the car was the solution though.

 

Im going to give this a shot.