What's the reason for the left rear door not locking?

[AnastasiaMarie]

Left rear door not locking reasons are as follows: Remote lock failure: If you're using the remote key to lock the door, it's highly possible that the remote lock is malfunctioning or factors like aging of the car's remote transmitter antenna are causing the remote key to not work. In this case, you can use the spare mechanical key to lock the door. Magnetic field interference: Another situation is the presence of strong magnetic field signal interference around the car. Since smart keys use low-intensity radio waves, they cannot function properly under magnetic interference. Door jammer: If the car frequently fails to lock remotely in a certain location, the owner should be wary of door jammers, as some criminals use radio signal blockers that can emit electromagnetic waves at the same frequency as the locking signal, thereby blocking the electronic code of the car's central locking system, causing it to temporarily malfunction.