Does es200 need to clean the throttle when it drives to 28,000 kilometers?

Es200 drives to 28,000 kilometers to clean the throttle. According to relevant public information, the throttle can be washed for 2 years or 20,000 kilometers. Clean the throttle of the car once every 20,000 km to 40,000 km. However, it is not always better to clean the throttle as often as possible. Excessive cleaning will gradually clean off the special coating of the throttle cavity, and the cavity will lose its coating, which is more likely to cause greasy adhesion.