How often does BMW's throttle have to be cleaned?

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BMW's throttle is cleaned every 5,000 kilometers. How to clean BMW's throttle:

1. Loosen the fastening screw of the metal clip between the air cleaner and the throttle body with a screwdriver to separate the top cover of the air cleaner from the throttle body;

2. It is best for two people to clean the electronic throttle together. One is responsible for stepping on the accelerator and the other is responsible for washing. Spray carburetor cleaner on a clean rag, and then wipe it carefully with a rag.

3. After cleaning, check whether the throttle valve is clean and can be opened and closed freely. Then connect the air filter to the throttle body, make sure it is sealed, tighten the screw of the metal clip, and re-insert the sensor connector (if any).