Wiper blades
To prevent damage to the wiper arms or other components, do not attempt to move the wipers manually.
The use of a non-specified wiper blade could result in wiper malfunction and failure.
Blade inspection
Commercial hot waxes applied by automatic vehicle washes have been known to make the windscreen difficult to clean.
Contamination of either the windscreen or the wiper blades with foreign matter can reduce the effectiveness of the windscreen wipers. Common sources of contamination are insects, tree sap, and hot wax treatments used by some commercial vehicle washes. If the blades are not wiping properly, clean both the window and the blades with a good cleaner or mild detergent, and rinse thoroughly with clean water.
To prevent damage to the wiper blades, do not use petrol, kerosene, paint thinner, or other solvents on or near them.