Driving and operating 163Engine exhaust9 DangerEngine exhaust gases containpoisonous carbon monoxide,which is colourless and odourlessand could be fatal if inhaled.If exhaust gases enter the interiorof the vehicle, open the windows.Have the cause of the faultrectified by a workshop.Avoid driving with an open loadcompartment, otherwise exhaustgases could enter the vehicle.Diesel particle filterThe diesel particle filter system filtersharmful soot particles out of theexhaust gases. The system includesa self-cleaning function that runsautomatically during driving withoutany notification. The filter is cleanedby periodically burning off the sootparticles at high temperature. Thisprocess takes place automaticallyunder set driving conditions and maytake up to 25 minutes. Typically itneeds between 7 and 12 minutes.Autostop is not available and fuelconsumption may be higher duringthis period. The emission of smellsand smoke during this process isnormal.Under certain driving conditions, e.g.short distances, the system cannotclean itself automatically.If cleaning of the filter is required andif previous driving conditions did notenable automatic cleaning, it will beindicated by % and a warningmessage in the Driver InformationCentre.% with a warning messageilluminates when diesel particle filteris full. Start cleaning process as soonas possible.% with a warning message flasheswhen diesel particle filter has reachedthe maximum filling level. Startcleaning process immediately toavoid damage 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.CautionIf the cleaning process isinterrupted, there is a risk ofprovoking severe engine damage.If cleaning is not possible for anyreasons, Z illuminates and a warningmessage appears in the DriverInformation Centre. Engine powermay be reduced. Seek the assistanceof a workshop immediately.Cleaning takes place quickest at highengine speeds and loads.The control indicator % extinguishesas soon as the self-cleaningoperation is complete. Keep ondriving until self-cleaning operation iscomplete.
