What are the reasons why the Envision cannot lock the doors?

[JaylaLynn]

Specific reasons why the Envision cannot lock the doors are as follows: Key malfunction: If you are using the remote key to lock the doors, it is highly likely that the remote lock is malfunctioning or factors such as aging of the car's remote transmitter antenna are causing the remote key to not work. You can use the spare mechanical key to lock the doors. Magnetic interference: If there is strong magnetic signal interference around the car, the smart key, which uses low-intensity radio waves, will not function properly under such interference. Door jammer: If the car frequently fails to lock via remote in a certain location, be cautious of a door jammer. Some criminals use a radio signal blocker that can emit electromagnetic waves at the same frequency as the car's locking signal, thereby disrupting the electronic code of the car's central locking system and temporarily disabling it.