The method 12, wherein when {TAIL ~ the circulation} is performed with {HEAD ~ the engine} switched off, this circulation only occurs if or as long as the on board electrical system of the motor vehicle of the internal combustion engine has sufficient energy reserves to start the engine again 
The method 12 , wherein when { TAIL ~ the circulation } is performed with { HEAD ~ the engine } switched off , this circulation only occurs if or as long as the on board electrical system of the motor vehicle of the internal combustion engine has sufficient energy reserves to start the engine again
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH