What are the side effects of using malfunctioning windshield wipers?

1. Damaging the vehicle’s engine.
2. Causing noises in the sound system within the driver’s compartment.
3. Correct answer: Impaired windshield visibility, as well as windshield damage.
4. Damaging the windshield’s sealing.

WhyFaulty wipers clean the windshield poorly, reduce visibility and scratch the glass.