"Keyless ignition" refers to a system in a vehicle that allows the driver to start the engine without using a physical key. Instead, it uses electronic technology, such as a push button or proximity sensor, to start the car. Full definition
This is my first vehicle with keyless ignition about which I was a bit dubious, but I've come to love not having to carry a key ring around. (carsdesk.com)
Newly available features include keyless ignition / entry, forward - collision and lane - departure warning systems, and even an in - vehicle vacuum cleaner. (autoweek.com)
The cabin boasts more soft - touch materials and an optional keyless ignition system. (automobilemag.com)