How to Deal with Self-Cleaning Agent Corroding Trim Strips?
3 Answers
First, clean the affected area with water and dry it (to prevent sand particles from scratching the electroplated layer during wiping), then apply toothpaste using a microfiber or pure cotton cloth. Rinse off the toothpaste with water and dry it; apply car wax to prevent further rusting. You can also try using toilet cleaner or carburetor cleaner, but be cautious as these have certain corrosive properties and may damage the car paint if not used carefully.
Last time I washed my car, I made the same mistake and accidentally splashed self-cleaning solution onto the chrome trim of the door handle. Those corrosion marks were truly heartbreaking! I tried scrubbing gently with a toothbrush and toothpaste, but the effect was limited. Later, I discovered that using a dedicated automotive metal polishing compound was the real solution. Squeeze some paste onto a soft cloth, rub in circular motions for about ten minutes, and wipe it off when the paste darkens—the chrome trim actually regained about 80% of its shine. Remember to apply a coating sealant afterward for protection. Also, avoid using strong cleaners for convenience when washing your car; neutral car wash soap is the safest option. After all, restoring trim isn't easy and costs around a hundred bucks for repair materials.
In car detailing shops, we often encounter such cases. The self-cleaning agents mainly contain strong alkaline components, which can cause white spots when they come into contact with chrome trim strips. Our treatment process consists of three steps: first, rinse off the residue with a pH neutralizer, then use 8,000-grit detailing clay to absorb impurities, and finally polish with a chrome alloy-specific polishing compound using a slow-speed sponge pad. If the corrosion depth exceeds 0.1 mm, replacement is usually the only option. We recommend that owners rinse the affected area with plenty of water immediately upon discovery and bring it in for repair within three days for a chance to salvage it. For daily maintenance, applying liquid ceramic coating monthly can create a protective barrier. Currently, our shop charges 300-500 yuan for a complete trim strip restoration service, which is more cost-effective than replacement.
