Snap the halves of the fob back together. Test it to see if it works. This process also works with other small devices, such as garage door openers.

Do you get a warning message on the screen that the battery in the remote control key fob needs replacing when starting your car? This wireless technology needs the power to work. If you’d like to ...

Most key fobs will continue to work normally after a battery change, but if your fob doesn’t respond it may require reprogramming. Check your owner’s manual or call your dealership for ...

Learning how to change the battery in a Toyota key fob isn't difficult. Whether you have a new or old model, we'll show you how to do it step by step.

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.

But maybe you’ve experienced the downside: The cost to replace the latest key fobs can be as much as $400 depending on the brand. Then add another $20 to $130 to program it to work with your car.

Most key fobs will continue to work normally after a battery change, but if your fob doesn’t respond it may require reprogramming. Check your owner’s manual or call your dealership for ...

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