Pushing the button is for unlocking all the doors at once, including the trunk/hatch.
The car is always looking for the signal. If you are close, and a hand touches the door handle, that door opens - usually only the front seat doors have this...
If crooks have duplicated your fob, they are in.
“The car is always looking for the signal. If you are close, and a hand touches the door handle, that door opens - usually only the front seat doors have this...”
Mine do not do this. Until the button is pushed, nothing happens.
Interesting. The crook gets into the car and it will start?