What are the reasons why Ford car doors cannot be locked?

[StMaria]

The reasons why car doors cannot be locked are as follows: 1. Circuit malfunction: If you are using a remote key to lock the door, it is very likely that the remote lock is malfunctioning or factors such as the aging of the car's remote transmitter antenna are causing the remote key to be ineffective. In this case, you can use the spare mechanical key to lock the door. 2. Wireless signal interference: If there is strong magnetic field signal interference around the car, the smart key, which uses low-intensity radio waves, may not function properly under such interference. 3. Human factors: If the car frequently fails to lock remotely in a certain place, you need to be wary of door jammers, as some criminals use a radio signal jammer that can emit electromagnetic waves at the same frequency as the car lock signal, thereby blocking the electronic code of the car's central lock and temporarily disabling it.