turtle54

I have a 2003 es 300. The lock worked up until the time I had to use the key from the outside or manually from the inside. All the other locks work fine from the master switch. Then a few days later the lock got stuck in the open position. Can't move it at all. Because of this I can't activate the alarm and the car is now at a vulnerable state. Can I diy or should I have a pro do it?
Any help would greatly be appreciated