142 Driving and operatingFor vehicles with electrical parkingbrake pull switch m for approx. onesecond.■ Switch off the engine and ignition.Turn the steering wheel until thesteering wheel lock engages.■ If the vehicle is on a level surface oruphill slope, engage first gear or setthe selector lever to P beforeswitching off the ignition. On anuphill slope, turn the front wheelsaway from the kerb.If the vehicle is on a downhill slope,engage reverse gear or set theselector lever to P before switchingoff the ignition. Turn the frontwheels towards the kerb.■ Lock the vehicle and activate theanti-theft alarm system.NoteIn the event of an accident withairbag deployment, the engine isturned off automatically if the vehiclecomes to a standstill within a certaintime.Engine 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.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% and CodE 55 in the DriverInformation Centre. In vehicles with
