Automatic Engine Start-Stop Function (MSA): Notes

The automatic engine start-stop function (MSA) is a basic element within the array of measures designed to reduce CO₂ emissions. By automatically switching off the engine whenever the vehicle is stationary this system reduces fuel consumption. The restart also takes place automatically as soon as the corresponding switch-on conditions required for switch-on are met. The automatic engine start-stop function is carried out by the engine control unit. Different information present in the bus system is used for the automatic engine start-stop. Furthermore, additional sensors are required to ensure trouble-free functioning of the automatic engine start-stop.