188 Vehicle careCautionDrive slowly. Do not drive jerkily.Excessive tractive force candamage the vehicle.After towing, unscrew the towing eye.Insert cap and engage in the bumper.Appearance careExterior careLocksThe locks are lubricated at the factoryusing a high quality lock cylindergrease. Use de-icing agent only whenabsolutely necessary, as this has adegreasing effect and impairs lockfunction. After using de-icing agent,have the locks regreased by aworkshop.WashingThe paintwork of your vehicle isexposed to environmental influences.Wash and wax your vehicle regularly.When using automatic vehiclewashes, select a programme thatincludes waxing.Bird droppings, dead insects, resin,pollen and the like should be cleanedoff immediately, as they containaggressive constituents which cancause paint damage.If using a vehicle wash, comply withthe vehicle wash manufacturer'sinstructions. The windscreen wiperand rear window wiper must beswitched off. Remove antenna andexternal accessories such as roofracks etc.If you wash your vehicle by hand,make sure that the insides of thewheel housings are also thoroughlyrinsed out.Clean edges and folds on openeddoors and the bonnet as well as theareas they cover.CautionAlways use a cleaning agent witha pH value of 4 to 9.Do not use cleaning agents on hotsurfaces.Have the door hinges of all doorsgreased by a workshop.Do not clean the engine compartmentwith a steam-jet or high-pressure jetcleaner.