How often does Highlander clean the throttle?

Highlander cleans the throttle every 20-30 thousand kilometers. As often as possible. Excessive cleaning will gradually remove the special coating on the inner cavity of the throttle valve, and the inner cavity will lose the coating, which is more likely to cause greasy adhesion. Take Highlander 202 1 2.0T Two-wheel Drive Elite Edition 5 as an example. It is an SUV launched by GAC Toyota. Its length, width and height are 4890mm, 1925mm and 1350nm respectively, and its wheelbase is 2790 mm ... Five seats of Highlander 202 1 2.0T two-wheel drive elite edition are equipped with a 2.0T turbocharged engine, with the maximum power 162kw. Million car purchase subsidy