A system (SC) is intended to control a maneuver of a vehicle (V) via the establishment of two-way wireless communication between a communication module (MC1) of the vehicle (V) and a remote control unit (BC), following the actuation of the latter. This system (SC) includes components designed to determine, over a duration corresponding to a chosen main number (NP) of successive connection events in their respective frequency channels, where the chosen main number (NP) is greater than 2, a first number of failed connection events, and then to compare this first number with a first chosen value and to modify the activated automatic maneuver in a chosen way if the first number is greater than or equal to this first value.