You gotta lock it, unlock it, and lock it again.

Just Nancy writes:

When you push the button that locks the car, it beeps, but it doesn’t make the locking sound. So it’s not locking. The way I fix it is I push the unlock button—the car makes the unlocking sound—and then I push the lock button for the second time. It beeps and makes the locking sound. Now the car is locked.