Driving and operating  
					Stop-start system  
					137  
					Possible reasons for a non-starting  
					engine:  
					Starting the vehicle at low  
					temperatures  
					The stop-start system helps to save  
					fuel and to reduce the exhaust  
					emissions. When conditions allow, it  
					switches off the engine as soon as the  
					vehicle is at a low speed or at a  
					standstill, e.g. at a traffic light or in a  
					traffic jam. It starts the engine  
					●
					Clutch pedal not depressed  
					(manual transmission).  
					Starting the engine without additional  
					heaters is possible down to -25 °С for  
					diesel engines and -30 °C for petrol  
					engines. Required is an engine oil  
					with the correct viscosity, the correct  
					fuel, performed services and a  
					sufficiently charged vehicle battery.  
					With temperatures below -30 °C, the  
					automatic transmission requires a  
					warming phase of approx.  
					●
					Brake pedal not depressed or  
					selector lever not in P or N  
					(automatic transmission).  
					●
					Timeout occurred  
					automatically as soon as the clutch is  
					depressed. A battery sensor ensures  
					that an Autostop is only performed if  
					the battery is sufficiently charged for  
					a restart.  
					Turbo engine warm-up  
					Upon start-up, engine available  
					torque may be limited for a short time,  
					especially when the engine  
					temperature is cold. The limitation is  
					to allow the lubrication system to fully  
					protect the engine.  
					five minutes. The selector lever must  
					be in position P.  
					Activation  
					Automatic Starter Control  
					The stop-start system is available as  
					soon as the engine is started, the  
					vehicle starts-off and the conditions  
					as stated below in this section are  
					fulfilled.  
					This function controls the engine  
					starting procedure. The driver does  
					not need to hold the key in position 3  
					or to hold Engine Start/Stop pressed.  
					Once applied, the system will go on  
					starting automatically until the engine  
					is running. Because of the checking  
					procedure, the engine starts running  
					after a short delay.  
					Overrun cut-off  
					The fuel supply is automatically cut off  
					during overrun, i.e. when the vehicle  
					is driven with a gear engaged but  
					accelerator pedal is released.  
					Depending on driving conditions, the  
					overrun cut-off may be deactivated.