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 ...

A close-up of a hand holding a car fob next to a black vehicle - M. Taupiq Nur Hidayat/Shutterstock If you're old enough to remember when cars had simple key ignition switches and not start buttons, ...

The fob for your Chevrolet should work for years, but eventually, the battery will need replacing. When you look at the fob, it might not be obvious how to do this. In some cases, you just slide a ...