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 ...

If your key fob has stopped working or is having issues, it’s probably time to change out the battery. Let’s look at how you can replace your Tesla Model X key fob battery.

The key fob is your lifeline to your car, letting you unlock the doors and set off the alarm, at a minimum, but how can you ...

If you own a Prius built between 2004-2009, the key fob used is different from the one that comes with a Prius built in 2010 or later. In the case of the 2004-2009 Prius, the procedure to change the ...

If your 2005-2012 Lexus GS’ key fob decided to stop working suddenly, the problem can be its battery that got depleted. Replacing it is very simple and you only need a thin screwdriver and the ...

Assuming the battery was the problem and not the fob itself, it’s usually not difficult to replace the battery yourself. If that’s not possible, you'll need to take the fob to a dealer or garage.

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

There’s usually a mechanical key hiding inside the key fob for cars with push-button start systems, so you can still unlock your door if the car battery or your fob battery runs out of juice.

This guide explains how to properly replace the battery in the 2018 Spark key. Follow these steps to put a new battery into the 2018 Chevy Spark key.

There’s usually a mechanical key hiding inside the key fob for cars with push-button start systems, so you can still unlock your door if the car battery or your fob battery runs out of juice.

And that’s just for the fob. Add another $50 to $100 to get replacement fobs programmed to work with your car and to have a new mechanical backup key made.