With a keyless car, it is a pain to keep searching for the keys to use the fob to open gates and garage door, so have have built a Lexus one.
I used an old spare remote, took it apart and the soldered 2 wires to the micro switch and attached the wires to a momentary push switch mounted in a blank switch panel.
Now just press the button and no need to try to find my keys.
Photo of finished job to follow.