Key fobs are a generally pretty mundane and overlooked piece of automotive paraphernalia. A few decades ago, drivers didn't have a way to remotely unlock their cars, and now it's taken for granted.

How Does Your Key Fob Work? The key fob uses wireless technology with a frequency of 433 MHz. There are receivers/transmitters on the vehicle and the key, so they can communicate with each other. This ...

On modern Chevrolet key fobs, the key itself is used as a tool to help you swap out the old battery for a new one.

Spare car key fob. Most modern cars have electronic fob keys, which are great, except if you need to replace them. They can cost between $200 to $500 to replace. Our 2008 Toyota P ...

My wife constantly loses her keys...to the point where this morning I shelled out $275 to get a new key for her 2 month old Acura. Rather than replace the wife, I'd like feedback on those wireless key ...

We may receive a commission on purchases made from links. For the sake of convenience, the battery in your car's key fob is designed to last a fairly long time, usually up to around four years. The ...