Control of a freewheel mode for a motor vehicle with engine off

The present invention relates to an automotive electronic control system (E-ECU, PWT-ECU; ECU) for a motor vehicle (MV) comprising a powertrain (PWT) and an electric system (ES); the powertrain (PWT) comprises an internal combustion engine (ICE) and a driveline (T); the driveline (T) comprises a gearbox (G) and a clutch (C); the electrical system (ES) comprises electrical energy storage devices (ACC1, ACC2); the automotive electronic control system (E-ECU, PWT-ECU; ECU) is designed to receive quantities indicative of operative conditions of the motor vehicle (MV), of the powertrain (PWT) and on-vehicle systems/components; the automotive electronic control system (E-ECU, PWT-ECU; ECU) is designed to cause the motor vehicle (MV) to enter a freewheel running condition with internal combustion engine off if the automotive electronic control system ( E-ECU, PWT-ECU; ECU) determines, based on the received quantities, occurrence of a driver-performable action indicative of the will of the driver to enter a freewheel running condition with internal combustion engine off and occurrence at or within a given time ( Ä ES&S1 ) from the occurrence of the driver-performable action and the maintaining for a given time ( Ä ES&S2 ) of specific predetermined entry conditions; the automotive electronic control system (E-ECU, PWT-ECU; ECU) is further designed to cause the motor vehicle (MV) to leave a freewheel running condition with internal combustion engine off if the automotive electronic control system (E-ECU, PWT-ECU; ECU) determines, based on the received quantities received, occurrence of at least one of specific predetermined exit conditions.