A computerized system as disclosed herein for accessing a vehicle comprises a vehicle key comprising a control unit, a first wireless communication module operatively connected to said control unit and configured to allow said control unit to communicate with a control system of said vehicle, and a second wireless communication module operatively connected to said control unit and configured to allow said control unit to communicate with a mobile computerized device. The system further comprises a software application which can be stored on and executed by at least one mobile computerized device, said software application being configured to control said control unit to interact with said control system to cause the unlocking of one or more doors of said vehicle. In a further aspect, the invention relates to a computerized method for accessing to a vehicle.