Why does the door make noise when opening and closing?

[Molly]

The reasons for abnormal noises from car doors include: loose interior panels or audio systems, rusted door hinges, and aged door sealing strips. For the issue of loose interior panels or audio systems, you can check by shaking them manually or pressing on the noisy area while driving. If the noise disappears, simply re-secure the affected part. Rusted door hinges will produce noise when the door is opened or closed. The solution is to clean the hinges and apply some grease. If the door sealing strips have aged due to prolonged lack of maintenance, it can be troublesome. The best method is to purchase a bottle of silicone grease for self-maintenance. Apply the silicone grease to the sealing strip, let it absorb for an hour, and then wipe it off.