If your car's smart key dies on you, it's still possible to unlock your car and start the ignition without replacing the key's battery immediately.

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 have a newer car, you may have a battery-powered smart key with a lot of really convenient features. But what do you do if that battery dies?