2. Check the door lock actuator. The door lock actuator is responsible for moving the door lock mechanism. If it is damaged or not receiving power, it can prevent the door from locking or unlocking properly. Check the door lock actuator for any damage or power issues. If you find any damage, you will need to replace the door lock actuator.
3. Check the wiring. The wiring to the door lock actuator can become damaged or corroded, which can prevent the door lock actuator from receiving power. Check the wiring to the door lock actuator for any damage or corrosion. If you find any damage, you will need to repair the wiring.
4. Check the central locking control module. The central locking control module is responsible for sending the signals to the door lock actuators to lock and unlock the doors. If the central locking control module is damaged, it can prevent the doors from locking or unlocking properly. Check the central locking control module for any damage. If you find any damage, you will need to replace the central locking control module.