With push-button start systems, you can start your car effortlessly. As long as the key fob is inside the vehicle, a simple press of the button is all it takes.

A car expert reveals how one can start their car with a dead key fob, even if their car has keyless ignition.

They are designed to simplify the driving experience. Push a button rather than turn a key. But recent fatalities, including this past weekend in Boca Raton, Fla., in which drivers left the car ...