Does anyone know if there is a type of sensor that I could use to detect the exact location of a key fob that is lost within my vehicle? Seriously. The Intelligent Key for my Murano fell out of my pocket and slid under the driver's seat while I was driving. While looking for it later, I think I pushed it under the carpet, through the opening for the ventilation tube. It is definitely in the vehicle, as the doors won't lock and the ignition will start. I cannot find it after a lot of searching. I asked the dealer if they had a sensor to find it, and they said good idea but such device does not exist. They could not find the key fob, either, even after removing the driver's seat. Before I have them deactivate it, I want to see if anyone knows whether it emits a radio signal that could somehow be detected?