Why can't the windshield wipers clean the front windshield properly on rainy days?
2 Answers
The reasons why the windshield wipers cannot clean the front windshield properly on rainy days are as follows: 1. Aging wiper blades: Wiper blades are made of rubber, and long-term parking in open environments can cause them to age. Aging wiper blades will leave streaks and watermarks on the windshield, and replacing the wiper blades will solve the issue. 2. Wiper blades are too soft or improperly adjusted: When replacing wiper blades yourself, it may cause the wiper arm and the underlying mechanism to shift, preventing the wiper blades from returning to the lowest point when moving downward or hitting the A-pillar when moving upward. In this case, loosen the fixing nut of the wiper arm and adjust it to the proper position.
I've been driving to and from work for several years. The most common reason for the windshield not being wiped clean during rainy days is old and hardened wiper blades, which leave water stains when wiping. When it rains, the rainwater mixes with dust from the road, forming an oily film on the glass. If the glass isn't cleaned regularly, water stains can accumulate more easily and obstruct the view. Some cars may have insufficient wiper pressure or loose wiper arms, leading to uneven wiping. I remember once driving in heavy rain and almost rear-ending the car in front because I couldn't see clearly—that's when I realized the wipers needed replacing. Regularly checking the rubber wiper blades for cracks and replacing them every six months or so can prevent such issues. Additionally, using a dedicated glass cleaner and wiping the windshield before rainy days can help achieve a cleaner wipe. Safety comes first in rainy weather—don’t overlook this small detail, as it can easily lead to accidents.
