Push-button start key fobs protect your vehicle against theft. By ensuring that the ignition doesn't start until it receives a signal from its paired key fob, a keyless ignition system bars entry ...

The button on your car door handle is part of the keyless entry system, allowing quick locking and unlocking once the car ...

For cars with a push-button start, however, all you have to do is physically put your dead-battery fob in a designated location, and the button will still work.

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.

If you're looking to pick up a new key fob, or repair one, you might wonder how long programming it takes and whether or not you can do it yourself.

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.

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.

If you have a key fob and have ever been curious about the circle arrow button and its function, here's what it means.

If you're looking to pick up a new key fob, or repair one, you might wonder how long programming it takes and whether or not you can do it yourself.