from 09/28/2020. Key. to 09/27/2020. A mechanical key or remote used to turn on/off a vehicle's ignition and as well as open the vehicle's doors. It could also include additional functions, such as a panic button, trunk release, liftgate release, tailgate release, etc. A remote used to lock/unlock a vehicle. It may include additional functions such as a panic, trunk release, liftgate release, tailgate release, etc. Keyless Ignition. Passive Entry.