
Solutions for loud car door closing sounds are: 1. Check for any foreign objects inside the door trim panel and remove them promptly if found; 2. Inspect whether the trim panel or audio system is loose; 3. Check if the door hinges are rusted; 4. Replace the door sealing strip; 5. Examine whether the door lock mechanism has poor contact, excessive gap, or insufficient lubrication. The causes of loud car door closing sounds are: 1. Presence of foreign objects inside the door trim panel; 2. Loose trim panel or audio system; 3. Rusted door hinges; 4. Aged door sealing strip; 5. Poor contact, excessive gap, or insufficient lubrication in the door lock mechanism.


