Newer cars come with a key fob of some sort, whether as a separate device attached to your keyring with buttons to lock and unlock your car, or integrated into the key itself. These fobs send a ...
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 ...
Modern cars have swapped regular keys for key fobs, and most of them use a CR2032 button cell battery. How can you tell if it's weak? How long do they last?