Sounds like the rod that attaches from the door lock to the handle mechanism may have come off. there is only a small clip that keeps this in place and it mat have broken. or a bushing within the locking mechanism itself may have worn out. I would check the rods first there may be up to 3 of them. 1 goes to locking mechanism near the window (in and out. lock with key and lift button), if electric locks, one may go to locking solenoid and the door release which goes to interior door handle and outside door hangle
You can open a locked door (From the outside: With a key)(From the inside: With the lock opener, usually by twisting it) :-)
If the lock switch is set to unlocked and it will not open from the inside or outside, the door lock arm may have fallen lose. Take the inside door panel off and check around the door levers and door lock.
Open the door from the inside!!!
if the door opens from the outside but not the inside then check that the door does not have a child lock
when you lock a car door it can not be opened from the outside, ( unless it is picked ), when you double lock it you can not open the door from the inside in the event of someone breaking a window to gain entry.
You would need to pry the door panel off and then play with the door lock and handle rods from the inside.
If the door on a 1993 Corsica opens from the inside and not the outside, one issue is likely the problem. The linkage connecting the outside door handle is disconnected or broken. It is also possible that the door lock is faulty.
Make sure the child safety lock is not on and try again.
the linkages to either the handles or the lock or both has come off. here's the kicker... you need to open the door to take of the inside door pannel to fix it. try to remove the pannel with the door closed. or a "skilled" vheicle locksmith could open it from the outside...but it's not cheap.
If the door on a Hyundai Gl will not open from the inside, the child safety lock mechanism should be checked. The lock mechanism is found inside the door jab underneath a label that says 'child lock'.
Open door from outside and then de-activate child proof door lock button on the edge of door. You will then be able to open the slider from the inside.
The lock on the top of the drivers door acts as the power lock switch for the crv, open (up) and close (down) while in the car. To lock all doors from outside the car hold open inside door handle and push down lock on top of door. All doors should lock. Close door.