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.

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 own a slightly newer car that still uses a physical key that's attached to a remote fob, or if you own a modern car with a push-button start that relies solely on a fob with no physical key ...

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

A 2023 survey found that over 60 per cent of drivers with push-button start systems had no idea their car had a hidden emergency start feature.

If you're in a pinch and need a new copy of your car key, Ace Hardware may be the better alternative over the dealership, but it depends on what car you own.

Some automakers have even expanded the remote start button's functionality and/or use a different icon — that's why BMW has a diamond button on its key fob, for instance.