1. Faulty door lock actuator: The door lock actuator is a device that controls the locking and unlocking of the doors. If the actuator is faulty, it may not be able to unlock the door from the outside.
2. Broken or disconnected linkage: The door lock actuator is connected to the door handle by a linkage. If the linkage is broken or disconnected, the actuator will not be able to unlock the door from the outside.
3. Damaged door handle: If the door handle is damaged, it may not be able to engage the linkage properly, preventing the door from unlocking.
4. Child safety lock: Some vehicles have child safety locks that can be engaged to prevent children from opening the doors from the inside. If the child safety lock is engaged, you will not be able to open the door from the outside.
To resolve this issue, you may need to:
1. Replace the door lock actuator.
2. Reconnect or replace the linkage.
3. Repair the door handle
4. Disengage the child safety lock
If you are unable to resolve the issue yourself, you should take your vehicle to a qualified mechanic.
