How often does Audi a4l clean the intake valve?

The throttle of Audi a4l is cleaned every 15000 km. Throttle is an important part of automobile air intake system. A certain amount of carbon deposit will appear in the throttle valve in daily use. Only by regular treatment and cleaning can the engine air intake system be normal without affecting the vehicle power. Audi a4L under FAW-Volkswagen brand is a medium-sized car. After the motor vehicle is purchased, the owner will be given a manual, which clearly indicates the items that need to be replaced for each maintenance. Motor vehicle drivers only need to check the vehicle manual regularly to correspond to the vehicle mileage. When parts need to be replaced, after-sales maintenance of vehicle brands can be carried out.