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Question 7607

What effect can continued exposure of the vehicle to high temperatures have on the rubber of the windshield wiper blades?

  1. They expand, exerting greater pressure on the windshield.
  2. They deteriorate, hardening and cracking.
  3. They become more elastic, extending their useful life.
Show answer and explanation

Correct answer: They deteriorate, hardening and cracking.

Prolonged heat damages the rubber on the wiper blades, causing it to harden and crack. It does not become more flexible or press harder against the glass. Hard, cracked rubber wipes poorly and must be replaced.

Mecánica y entretenimiento simple del automóvil. Edición 2019