The invention proposes a vehicle remote
diagnostic system and diagnostic method. The
system includes a configured device, an in-vehicle diagnostic unit and a remote diagnostic unit. The in-vehicle diagnostic unit is connected with the remote diagnostic unit through a
wireless communication network. The in-vehicle diagnostic unit includes a vehicle-mounted information entertaining
system, an in-
vehicle bus and the
wireless communication module. The configured device is connected with the vehicle-mounted information entertaining
system through the in-
vehicle bus. The vehicle-mounted information entertaining system is used for receiving a diagnosis command of a user, acquiring
diagnostic data and sending
diagnostic data packets to the remote diagnostic unit through the
wireless communication module and at the same time receiving and displaying diagnostic result data transmitted back by the wireless communication module. Through integrating a diagnostic module into the vehicle-mounted information entertaining system which is necessary for a vehicle, the vehicle remote
diagnostic system and diagnostic method avoid outfitting and installation of a single diagnostic device and reduce the cost of the whole vehicle. Diagnoses can be realized through simple operations on the vehicle-mounted information entertaining system so that professional requirements for the vehicle diagnoses are reduced and at the same time, remote-diagnosis performance and efficiency are improved greatly at the same time.