How to Deal with Rust Inside Car Doors?
2 Answers
Here are solutions for rust inside car doors: 1. Use toothpaste to remove rust spots. Apply toothpaste to the rusted area, wait for a period, then wash the car. Apply toothpaste again before washing, and the rust will be noticeably reduced after washing. 2. Use a touch-up pen to cover rust marks. For minor rust, lightly sand the rust spots with water and fine sandpaper, then apply a matching touch-up paint. After drying, gently sand the area smooth with fine sandpaper. 3. Use rust remover. Automotive rust removers are low in VOC (Volatile Organic Compounds), non-toxic, and non-corrosive. After spraying, the rust will dissipate over time.
I also encountered the problem of rust inside the car door last year, which was quite annoying. Mainly, rainwater seeped in and wasn't cleaned up in time, causing rust spots to emerge from the corners. I handled it myself by first removing the door trim panel—remember not to force it, be careful with the clips—then using coarse sandpaper to thoroughly clean the rust, applying a layer of transparent rust-proof paint to cover it, and finally spraying some car wax to prevent moisture. If the drainage holes were clogged, I cleared out leaves and debris to prevent water accumulation from recurring. The whole process took about two hours, and the tools only cost a few dozen yuan. Regularly checking the door seams and seals, and trying to open the door to dry it after rain, is much more effective for prevention than repairs. Otherwise, rust can spread and corrode the entire door, making repairs more expensive and troublesome.
