I didn't clean the throttle in 4S's shop. Can you guarantee that the throttle is broken?

First of all, you should make sure that the warranty of your car is given by the manufacturer, not by a 4S shop. All you need to do is call the customer service of the manufacturer to apply for warranty. This matter may be that the person who received you in the 4S shop did not elaborate. Whether you are in a 4S repair shop or not, the manufacturer will give you a warranty. You must first determine whether the throttle assembly is faulty, and then call the manufacturer's customer service to apply for warranty. The manufacturer's customer service will take you to the nearest 4S store. When you arrive at the 4S store, the receptionist will prepare the materials needed for the warranty 1. Maintenance record 2. Vehicle inspection record 3. Vehicle fault description 4. There are several kinds of fault records: audio recording, video recording and photo reporting to the manufacturer for application. If the manufacturer passes the examination, it will send the parts to the 4S shop and determine the working hours. In other words, when the 4S shop gives you the operation warranty, it is the manufacturer's checkout. Your problem lies in the maintenance record, because you didn't repair it in the 4S shop. You need to go to the repair shop to repair it for you, and ask him for business license, maintenance qualification and formal purchase channels for spare parts. Just get these ready.