All of the sudden, front right door won't open from both outside and inside.

Both inside and outside handles work without any resistance and lock is locking and ulocking with a key from outside and with lock knob from inside. It is strange that none of the handles can't open the door. Anybody had similar problem?

Hello Brana;

yes, i have had the same problem a few years ago. A small piece of the white plastic part in front of the lock unit (why it was fallen apart? i really don't know!) blocked the lock unit. I opened the rear door and used a long and small screwdriver to remove the small plastic piece. If you have an additional block unit (you can exchange it by undoing the 3 or 4 screws around the unit) or you can get one, and the door will not open easyly, just use a long screwdriver and a hammer and destroy the block unit. The front door will open and you can exchange it.

Good luck!