Hello, the causes of this situation are as follows: car navigation system loopholes, resulting in wifi is always shown to be open this phenomenon, you can find your model online and brush the machine, the system upgrade to the latest version, this requires your hands-on ability to be strong, if your hands-on ability is not very strong, or recommend to the 4S shop to upgrade! Car navigation hardware failure, WIFI module burned out will also lead to wifi always show is open this phenomenon, then you can only seek the help of 4S!