I have had this lock for about a year. About a month and a half ago it started acting up and re-locking when i turned the lock from inside the house. As a side note, it never unlocked unexpectedly. I contacted customer service and we walked through troubleshooting steps. After concluding the product was malfunctioning Kwikset sent out a replacement unit that has been working perfectly since install. The customer service was fantastic and will continue to use their products in the future.