3, send out a useful voice
some car keys have a red horn button, which is used to make the car sound, which helps us find its own car in the labyrinth of the underground parking lot. In addition to finding a car, it can also be used for help: when a suspicious person is approaching, the car can continue to honk and attract attention. This function should be more useful for single women. However, small oil drops here also prompt: this function should not be used indiscriminately, otherwise it will be disturbing people.
4, only open the cab side of the car door
some cars press the remote key to open the key, that is, only open the cab door; press two, it is to open all 4 doors. But some cars have not been set up when they come out of the factory. You can consult the 4S store to see if you can tune this function out. In this way, even if there is no automatic locking function, you can make your accessory and rear seat property more secure. How about
, do you see if your car keys have these functions, too? If there is a need, take this opportunity to practice it.