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Question 3992

Continued exposure of the vehicle to high temperatures can cause greater deterioration of the windshield wiper blade rubber. What are the most common effects?

  1. They soften and lose elasticity.
  2. They expand and exert greater pressure on the windshield.
  3. They harden and crack.
Show answer and explanation

Correct answer: They harden and crack.

With prolonged heat, the rubber on the wiper blades hardens and cracks. Rubber in this condition wipes less effectively and leaves streaks or areas unwiped. It does not soften or press harder against the windshield.

Mecánica y entretenimiento simple del automóvil. Edición 2019