3 Stop procedure Operation © 2009 31 Avoid switching off from full load (coking/ blockage of the remaining lubricating oil in the turbocharger bearing housing). The lu- bricating oil supply of the turbocharger is then no longer guaranteed! This shortens the life of the turbocharger. Run the engine in low idling speed for ap- proximately one minute after relieving the load. The control unit remains active for about another 40 seconds to save the system data (lag) and then switches off automati- cally. z Run engine up to idling speed. z Move the key to position 0. Control lamps A+B+C go out. A B C Shutting off