How does a central locking system in a car work?

Question

actually how does the alarm go off even when some one touches the non conducting part and how does the door lock go down automatically when you start the car

Answer 1

i own a repair shop,and all of this is built in,its designed to do that ,its all built in to the control unit on it,just like a small computer it does what its been told to do,and its programmed from the factory to be this way,its not one of those things that can be explained ,its just the way its programmed,good luck,i hope this help,s.

Answer 2

There are lots of them.

See the owners book. It will have some explanation.

It is call Shaker alarm.

It may be a vicinity switch. In that case it goes off when some one is just near it and resets, this way no one can even disable it.