What to Do When the Driver's Side Door Lock Won't Open?

[VanBrynlee]

When the car door won't open, you can first use the car key to unlock it, then lock it again, repeating this twice, and press the unlock button. Most vehicles have a child lock on the rear door, which requires using a flat-head screwdriver to turn the child lock to the closed position. If the door has been subjected to external force, it may cause deformation of the door hinge or lock post, which is also one of the reasons why the door won't open.