Does the 37,000 throttle need cleaning?

According to the manufacturer's requirements, the throttle nozzle needs to be cleaned every 15000 km (the price of 4S shop is 938), and the normal range of throttle opening is 3. 1. If it exceeds 3.5, it will be cleaned, and the warning light will be on. Failure to clean for a long time will cause excessive carbon deposition in the engine.