Buick Century unable to unlock doors with key, completely locked out on Buick Century

Some Buick Century owners report experiencing difficulties unlocking their doors, leading to being locked out of their vehicles. Common issues include problems with the keyless entry system, where the remote fails to unlock the doors. Additionally, some owners have identified a bad splice in the door sill area as a potential cause for doors that lock but won't unlock, which requires professional repair to restore functionality. Furthermore, those with the Keyless Open feature may find it ineffective if the key fob is not within the appropriate range. Owners with Passive Locking systems also report challenges, as the vehicle may not unlock if the key fob is not detected inside. If these methods do not resolve the issue, it is recommended to seek assistance from a professional locksmith or Buick dealership.