What are the common causes of ACC failure?
2 Answers
ACC failure can be caused by the following reasons: 1. Deteriorated engine oil: The quality of lubricating oil changes during use, regardless of its grade. After a certain mileage, its performance deteriorates, necessitating regular oil changes. 2. Clogged air filter: The engine's intake system mainly consists of the air filter and intake duct. Depending on usage, the air filter should be cleaned or replaced periodically. 3. Dirty intake duct: If the vehicle frequently operates in dusty or poor air quality conditions, it is essential to clean the intake duct to ensure smooth airflow.
Last time when I was driving with ACC, it suddenly malfunctioned, which scared me to death, so I quickly pulled over to check. ACC failures are mostly caused by the radar sensor being covered with mud or dirt, especially after rainy days or driving on muddy roads. Another common issue is software bugs, which might require a visit to the dealership for a program update. Loose wiring connections can also cause interruptions, so it's important to check the fuses and wiring. Don't wait for the next incident—I regularly clean the sensor head and windshield area to avoid obstructions. If it fails on the road, immediately turn off ACC and switch to manual control—safety comes first. Make it a habit to wipe the sensors every time you wash your car. Don’t underestimate these small details; they really can prevent trouble.
