A key fob, also called a keyless entry remote or keyless transmitter, controls your vehicle’s locks, trunk and alarm from a distance. Every key fob must be programmed to connect with a vehicle before ...

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 ...

What is a key fob, anyway? A key fob is a small remote device that allows you to control a keyless system. With a key fob, you don’t need an actual key to get into your car. The key fob uses radio ...

Endurance Warranty, Omega Auto Care, Toco Warranty and American Dream Auto Protect Your key fob can wear out over time, making it annoying or impossible, in some cases, to enter and use your vehicle.

All products featured here are independently selected by our editors and writers. If you buy something through links on our site, Gizmodo may earn an affiliate commission. Reading time 5 minutes ...

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?

Look in your pocket, purse, bag, or junk drawer, and chances are you’ll find a key fob. The basic ones lock and unlock your car’s doors. The fanciest do much more. But no matter which kind you have, ...