What Causes the Unusual Noise When Unlocking the Trunk?

1 Answers
TimothyFitz
07/30/25 9:55am
The unusual noise when unlocking the trunk is caused by aging or loose sealing strips. Solution: If the sealing strip is aging, replacing it is the best option. Before replacing the sealing strip, be very careful as different car models have different sealing strips. After selecting the appropriate sealing strip, remove the old one before installation and thoroughly clean the area where the sealing strip will be applied. Pay special attention to residual adhesive, as incomplete cleaning will prevent the new sealing strip from adhering firmly. Causes of Sealing Strip Aging: Impact of air components such as oxygen and ozone. The primary cause is oxidation reactions that break the molecular chains of the sealing strip. Effects of sunlight and moisture. These are key factors accelerating aging. Moisture in the air is a necessary condition for the softening of the sealing strip, while sunlight is the main factor promoting discoloration. Prolonged exposure to sunlight can easily cause the sealing strip to deform and soften. Temperature also significantly affects the sealing strip. In cold winters, the sealing strip can harden severely, leading to breakage, while in hot summers, it can soften and loosen.
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