HiWelcome to the forum Amr adel. When you have a chance, head over to the Newbie Section and say "Hi".
Tell us a little about yourself and your ride.
That way we can welcome you all proper like.
Are all fuses OK?
Does it also not lock from passenger front door switch?
Is one of the lock switches in the Nitro stuck?
Try disconnecting the Neg(-) battery cable for 10 minutes. This will reset the computers.