What is the reason for one wiper working while the other does not?
2 Answers
Introduction to the reasons why one wiper works while the other does not: 1. The wiper fuse is blown; 2. The wiper motor is burnt out; 3. The wiper switch is faulty, etc. You can go to a nearby repair shop for a detailed inspection to identify and fix the issue. Below is some related information about wipers: 1. Classification of wipers: Wipers can be categorized by their driving methods into mechanical, vacuum, pneumatic, hydraulic, and electric types. Modern cars generally use electric wipers due to their simple structure and convenient control. Typically, a car wiper consists of a motor, crank, linkage, wiper arm, and blade. 2. Function of wipers: Wipers are devices used to remove raindrops and dust attached to the vehicle's windshield, improving the driver's visibility and enhancing driving safety. Due to legal requirements, almost all cars worldwide are equipped with wipers. Rear windows of hatchbacks and SUVs also often have wipers.
When driving, one wiper moves while the other doesn’t. I’ve encountered this issue several times, and it’s mostly due to problems with the wiper linkage or connecting mechanism. The wipers are driven by a single motor, but the linkage transmitting motion to each arm may be worn, loose, or rusted, causing only one side to move. If the connecting pin of the wiper arm falls off, the same issue occurs—you can first check if the arm is stuck or misaligned. Another common cause is damage to the motor’s output gear, where only part of the gear is functioning. In winter, frozen arms stuck to the windshield are also a risk, so ice buildup should be cleared promptly. Avoid forcing them to operate to prevent motor burnout, and visit a repair shop as soon as possible for a professional inspection with proper tools.
