Nissan ProPILOT Assist: Following the Semi-autonomous Parade… From a Distance Published on August 17, 2017 in Technology by Alain Morin Photo: Nissan To activate the ProPILOT Assist system, the blue button must be pressed. And while driving at a speed of between 32 and 145 km/h, the driver can simply press the SET button to set the desired cruising speed.