Clean the wiper blades if the wipers leave smearing on the glass. Use a soft cloth and glass cleaning solution.
Windscreen wipers
Set the wiper arms to the service position
►Link.
Lift the wiper arms away from the glass.
Rear window wiper
Lift the rear wiper arm away from the glass.
WARNING!
Dirty wiper blades can impair the driver's view - risk of accident!
Caution!
If the wipers still leave smearing on the glass after they have been cleaned, the wiper blades should be replaced
►Link.