Like anything else relying on a battery, you car key fob can die—often at the worst time. Thankfully, these batteries are easy to replace.

Is your key fob not working after replacing the battery? You may need to reprogram it.

Thieves amplify a vehicle's radio signal to access and copy the key fob signal to steal a vehicle. Here's how to block the signal.

New key fobs must be programmed with codes that the vehicle has to read before it unlocks the door or allows starting the engine.

Search online for fobs based on the make and model of your car. CR found a number of options on Amazon, Walmart, and online auto-parts stores for $200 less than dealerships.

When your Honda key fob runs out of battery, you can take it to a dealership, but it's pricey. It's much cheaper and not too difficult to do it yourself.

If your key fob isn't working, it probably needs a new battery.

In this primer on how to replace a car key fob, Consumer Reports says getting another high-tech key fob can be a pricey proposition.

How To A Program GM Key Fob 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 ...