Diagnosing Windscreen Wiper Blade Faults
CAUSE | REMEDY |
The brushes are slipping | |
| The rubber brush is dirty | Clean the rubber brush with a stiff nylon brush and a detergent solution or alcohol. |
| The wiping lips are frayed, the rubber is crumbling or worn out | Replace the rubber brush. |
| The rubber has aged and the surface is cracked | Replace the rubber brush. |
In the cleaning zone, the remaining water immediately rolls into drops | |
| The windshield is contaminated with polish or oil | Clean the windshield with a clean cloth and silicone stain remover. |
The windshield wiper blade cleans well in one direction, but poorly in the other | |
| The rubber brush is deformed on one side and no longer works "capsizes" | Insert a new rubber brush. |
| The wiper arm is twisted | Carefully turn the wiper arm back until the normal vertical position is reached. |
Surfaces are not cleaned | |
| The rubber brush popped out of the frame | Carefully insert the brush into the frame. |
| The wiper blade no longer fits evenly on the glass because the spring guides or shields are bent | Replace the wiper blade. |
| Too low contact pressure due to wiper arm | This defect is observed primarily when the replacement blade is not installed correctly. Lightly lubricate the wiper arm hinge and springs with oil or install a new arm. |