Vehicle control system and vehicle control method

A vehicle control method to be executed by a computer for, in a vehicle performing wireless communication with a mobile terminal, controlling implementation of the wireless communication, the vehicle control method comprising:

• a first position measuring step of measuring a position of the mobile terminal with respect to the vehicle by performing first position measuring processing involving implementation of the wireless communication between the mobile terminal and the vehicle;
• a second position measuring step of measuring a position of the mobile terminal with respect to the vehicle by performing second position measuring processing involving implementation of the wireless communication between the mobile terminal and the vehicle and having less power consumption in the vehicle by the wireless communication than that of the first position measuring processing;
• and
• a position measurement control step of handling, as monitoring areas, a first area being an area within a first predetermined distance from the vehicle outside the vehicle and a second area being an area within a second predetermined distance, which is longer than the first predetermined distance, from the vehicle outside the first area and, if a position of the mobile terminal, which is measured by the second position measuring step, is within the second area, inhibiting measurement of a position of the mobile terminal by the first position measuring step and continuing measurement of a position of the mobile terminal by the second position measuring step, and, after the position of the mobile terminal, which is measured by the second position measuring step, comes into the first area, switching from the measurement of a position of the mobile terminal by the second position measuring step to measurement of a position of the mobile terminal by the first position measuring step.