I believe this function uses the GPS to know where the car is and when to send the signal. I have had days where somehow the satellite lock is not correct and it shows me charging a few houses (or sometimes streets) away. Could this possibly have an affect on how well this is working for some people? As a point of note, it has worked well for me except when I needed to wait for people to get in the car before leaving the garage. There is likely a timeout on the leaving function.