The method 12, wherein when the circulation is performed with 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 {HEAD ~ sufficient energy reserves} to start {TAIL ~ the engine} again 
to start
The method 12 , wherein when the circulation is performed with 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 { HEAD ~ sufficient energy reserves } to start { TAIL ~ the engine } again
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