Driving and operating 131take up to 25 minutes. Typically itneeds between 7 and 12 minutes.Fuel consumption may be higherduring this period. The emission ofsmells and smoke during this processis normal.Under certain driving conditions, e.g.short distances, the system cannotclean itself automatically.If the cleaning of the filter is requiredand if previous driving conditions didnot enable automatic cleaning, it willbe indicated by the control indicator%. Simultaneously Particulate FilterIs Full. See Owner's Manual appearsin the Driver Information Center.Control indicator % illuminates whendiesel particle filter is full. Startcleaning process as soon aspossible.Control indicator % flashes whendiesel particle filter has reached themaximum filling level. Start cleaningprocess immediately to avoiddamage to the engine.Cleaning processTo activate cleaning process,continue driving, keep engine speedabove 2000 revolutions per minute.Shift down if necessary. Dieselparticle filter cleaning is then started.If control indicator g alsoilluminates, cleaning is not possible.Seek the assistance of a workshop.CautionIf the cleaning process isinterrupted, there is a risk ofprovoking severe engine damage.Cleaning takes place quickest at highengine speeds and loads.Control indicator % extinguishes assoon as the self-cleaning operation iscomplete.Catalytic converterThe catalytic converter reduces theamount of harmful substances in theexhaust gases.CautionFuel grades other than those listedon pages 3 150, 3 201 coulddamage the catalytic converter orelectronic components.Unburnt petrol will overheat anddamage the catalytic converter.Therefore avoid excessive use ofthe starter, running the fuel tankdry and starting the engine bypushing or towing.In the event of misfiring, unevenengine running, a reduction in engineperformance or other unusualproblems, have the cause of the faultrectified by a workshop as soon aspossible. In an emergency, driving
