Method for authorizing access to motor vehicle by means of mobile electronic identification device

The invention relates to a method for authorizing access to a motor vehicle (1), which can be unlocked by means of an identification device (2), by means of a mobile electronic identification device (2), which identification device (2) can communicate with the motor vehicle (1) in order to transmit data via a first wireless communication link (3a) operating according to the UWB standard and a second wireless communication link (3b) operating according to the BLE standard, the maximum operating distance (RM1) of the first communication link is smaller than the maximum operating distance (RM2) of the second communication link (3b), comprising the following steps: a) monitoring that the signal strength (S) of the second communication link (3b) is weakened when a movement of the identification device (2) away from the motor vehicle (1) increases the distance (A) between the motor vehicle (1) and the identification device (2); b) storing the instantaneous signal strength (S) of the second communication link (3b) a