METHOD FOR ACTIVATING A VEHICLE FUNCTION AND ASSOCIATED ACTIVATION DEVICE

A method for activating a function of a motor vehicle by an activation device including a plurality of transceivers capable of transmitting to the world outside the vehicle, from portable access equipment carried by a user. Activation of the function being triggered by detection of the presence of the user in a predetermined area around the vehicle during a polling phase, and depending on a result of authentication of the portable access device by the vehicle during an identification phase, the vehicle being equipped with a driver assistance system including a device for detecting and identifying obstacles in an environment nearby the vehicle. The method including: detection by the driver assistance system of at least one stationary obstacle in the predetermined area, and identification of the obstacle; and polling and identifying, modification of the transmission parameters of the transceivers transmitting in the direction of the obstacle thus detected and identified.