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 tell if it needs a new battery?

Like anything powered by a battery, a car key fob can die—often at the worst time. Here’s how to change the battery in your key fob quickly and safely.

Locked out of your car because your key fob battery died? Learn step-by-step how to unlock your vehicle, start it with a dead key fob, and prevent future lockouts with this essential guide.

Other cars might turn off the key fob if you lock the door with a key. You should try on your own vehicle. If that doesn’t work, you can keep your key in something called a Faraday pouch or purse.

We explain how you can gain entry to your car using a hidden feature in a dead key fob - and the measures you can take to avoid being locked out of your car because of a dud remote key.

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.