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 ...

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.

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

Even without power, the fob can still be detected using passive RFID technology. Press the brake (or clutch) and push the start button. The car should recognise the key and start as usual.

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.

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

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.

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.