
Generally, one is long and the other is short, with the long one on the driver's side and the short one on the passenger side. Additional information is as follows: 1. Introduction: The wiper is an important accessory installed on the windshield, and its function is to remove rain, snow, and dust that obstruct the view on the windshield. Therefore, it plays a crucial role in driving safety. 2. Principle: The motor on the electric wiper drives the output shaft through the worm gear on the armature shaft and drives the output gear through the idler gear and idler shaft. The output arm connected to the wiper linkage is then manipulated by the output shaft. When the motor rotates, the output arm and linkage are driven to move back and forth.

I usually enjoy tinkering with car stuff, and the issue of one wiper being longer than the other is all about their installation positions on the windshield. Generally, the longer one is on the driver's side, while the shorter one is on the passenger side. This is because the windshield has a curvature—the longer blade covers a larger area, while the shorter one handles the edges, preventing clashes during operation or leaving dead spots. Proper positioning ensures even wiping, especially crucial for maintaining clear visibility during rain. If installed incorrectly (e.g., swapped), it may lead to poor cleaning or even glass damage. My car once had worn rubber blades—regular checks are vital. I recommend inspecting wear every six months and replacing wipers with the correct size. Safe driving comes first; clear visibility trumps everything, reducing rainy-day hassles.

It took me a few years of owning a car to truly understand windshield wipers. Their asymmetric design (long on the left, short on the right) is standard placement at the base of the windshield. Correct installation positioning is crucial, and sizes shouldn't be arbitrarily swapped. I once made the mistake of buying cheap aftermarket wipers - the shorter blade sat misaligned, leaving dangerous water streaks during rain. Lesson learned: always purchase exact model-specific replacements. Installation is simple: just hook onto the wiper arm and adjust positioning. Rubber degradation causes cracking that impairs visibility; I recommend annual replacement. Use dedicated wiper fluid for glass cleaning too. Park in shade to prevent UV damage and extend rubber lifespan. Proper wiper maintenance makes all the difference for stress-free driving.

When driving in heavy rain, I always worry about the windshield wipers. The longer one is on the driver's side and the shorter one on the passenger side, positioned at opposite ends of the windshield. If properly aligned, they wipe evenly, ensuring clear visibility and safety. Misalignment or wear can leave blind spots and blur vision, which is extremely dangerous. I make it a habit to check the wipers monthly by testing the spray function, ensuring no cracks or aging. When buying new wipers, it's crucial to match the correct size for each position—otherwise, driving in the rain feels like looking through a cloth. Timely maintenance of their positioning minimizes safety hazards, keeping the journey safe and worry-free.


