1. Cleaning the door glass: Clean the dirt and oil stains on the door glass with detergent or soapy water to ensure that the sealing strip can stick tightly.
2. Replace the sealing strip: If the sealing strip is aged or seriously damaged, it may be necessary to replace it with a new one. You can go to an electric car repair shop or an auto parts store to buy a sealing strip that matches the model, and ask a professional to replace it.
3. Adjust the position of the door glass: If the position of the door glass is incorrect, the sealing strip may not be tight. You can try to adjust the position of the door glass so that it fits closely with the sealing strip.
4. Use lubricant: Apply some lubricant to the track of the door glass, which can reduce the friction when the door glass moves and make the sealing strip fit more closely.
5. Check the door frame: If the door frame is deformed or damaged, it may affect the tightness of the sealing strip. You can check whether there is any problem with the door frame and repair or replace it if necessary.