What causes the sunroof rattle in Volkswagen CC?

[DelGrant]

The causes of sunroof rattle in Volkswagen CC are as follows: Sunroof seal or rubber gasket aging: The sunroof sealing strip, being constantly exposed to rain or sunlight, is prone to aging. Rubber conditioner can temporarily restore the performance of the seal. Open the sunroof fully and spray the conditioner onto the sealing strip. Of course, a more direct solution is to replace the sunroof seal. Loose sunroof screws: Loose screws can cause rattling in the headliner and sunroof, and may even pose a risk of the sunroof detaching. The solution is simple: locate the sunroof screws and tighten them. Dust particles in the sunroof track: With repeated opening and closing of the sunroof, dust inevitably accumulates in the track gaps. When enough dust builds up, friction occurs during operation, leading to rattling. The dust can be removed with a cloth, and regular maintenance is essential.