What Causes the Intermittent Operation of the Buick Excelle Windshield Wiper?
1 Answers
The intermittent operation of the Buick Excelle windshield wiper is due to an internal short circuit in the wiper motor. The wiper linkage has multiple connection points, and observing the wiper's operation can help determine if the linkage is faulty. Importance of the Wiper: Among all automotive components, the windshield wiper is relatively small. However, it is crucial as it ensures clear visibility during rainy weather. According to an international driving safety survey, the accident rate caused by aging wipers during rainy conditions is approximately five times higher than usual. Beam-style wipers distribute pressure evenly across the entire force-conducting strip, ensuring uniform force application on the wiper blade. This reduces the occurrence of water streaks and scratches, delivering better wiping performance. Additionally, they significantly reduce vibration wear and offer advantages such as even force distribution, sun protection, simple structure, and lighter weight. As a result, the lifespan of the wiper motor and blade is at least doubled compared to conventional wipers, making them more economical and reliable. Checking the Wiper Motor: After opening the car hood, the wiper motor can be seen. Touching the motor by hand—if it feels hot—indicates an internal short circuit, and replacing the motor will resolve the issue. Checking the Wiper Blades: Neglecting wiper blade maintenance may lead to severe damage, rendering them ineffective during rain. In such cases, replacing the blades promptly is necessary. Checking the Wiper Linkage: The wiper linkage has multiple connection points, and issues here can disrupt normal operation. Observing the wiper's movement helps determine if the linkage is faulty. Checking the Wiper Fuse: To protect the car's electrical system, each electrical device has a fuse. If the wiper fails to function, inspect whether the wiper fuse is blown and replace it with a spare fuse if needed. Checking the Wiper Switch: Although the wiper switch is not frequently used, automotive electronics can be unstable. If no issues are found in the above checks, the wiper switch might be faulty. Using a multimeter to test the switch or replacing it with a new one for testing is advisable.