132 Driving and operating■ the driver's seat belt is unfastenedand the driver's door is opened■ the engine temperature is too low■ the battery is discharged■ the brake vacuum is not sufficient■ the vehicle starts to move■ the climate control system requestsan engine start■ the air conditioning is manuallyswitched onIf the bonnet is not fully closed, awarning message is displayed in theDriver Information Centre.If an electrical accessory, e.g. aportable CD player, is connected tothe power outlet, a brief power dropduring restart might be noticeable.Parking■ Do not park the vehicle on an easilyignitable surface. The hightemperature of the exhaust systemcould ignite the surface.■ Always apply parking brake.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 may
