Many lockout service calls. Bought new keys, FOBs, roadside assistance service membership. Probably $700 is conservative in 11 yr old car.

In addition to this, you have to push the unlock button about five times to get the driver door to unlock. A real pain with little kids and when it's raining, etc. The car also had the electric gas gauge go out three times within the first two years. At least this was under warranty.