How to open the mechanical key of BYD Song Key?

Song pro mechanical key access method: first toggle a switch on the back of the key, then pull out the cover plate, toggle the cover plate to remove the back cover of the key, and the mechanical key will be hidden inside, and it can be used after being taken out.

How to open the door with a mechanical key: The mechanical key can be directly inserted into the keyhole of the door to open and lock the door. There will be a hidden keyhole in the car armrest box or under the water cup trough. You can insert the remote control key to start this function with one click.

There are two kinds of mechanical equipment lock holes: the first one, commonly used, is the exposed mechanical equipment lock hole. The second type is the hidden mechanical equipment keyhole, because some cars hide the mechanical equipment keyhole with a protective cover in order to keep the appearance beautiful, and only need to peel off the protective cover to see the mechanical equipment keyhole.

Car remote control key: remote control key means that you can remotely open and lock the door without inserting the key into the keyhole. Its greatest advantage is that it can unlock and lock the door remotely and conveniently, no matter day or night, without looking for a keyhole. The basic principle of remote control key is that the key sends out weak radio waves, the car antenna receives the radio wave signals, the electronic controller ECU recognizes the signal code, and then the executive mechanism (motor or electromagnetic manager ring) of the system performs on/off actions. The system is mainly composed of transmitter and receiver.