The safest and most effective way to clean car lenses (headlights or ADAS cameras) is to use a ph-neutral car shampoo and a soft, clean microfiber towel, followed by a protective spray sealant. Avoid household glass cleaners, which contain ammonia and can damage plastic lens coatings over time.
For headlights, especially older, yellowed ones, a dedicated headlight restoration kit is often necessary to remove oxidation from the polycarbonate plastic. Advanced Driver-Assistance Systems (ADAS) camera lenses are extremely sensitive; improper cleaning can misalign the camera and compromise safety features like lane-keeping assist. Always consult your owner's manual first for specific instructions.
Here’s a quick comparison of common cleaning agents:
| Cleaning Agent | Best For | Key Consideration | Risk Level |
|---|
| Ph-Neutral Car Shampoo | Routine cleaning of all lenses | Safe for coatings, prevents streaking | Low |
| Isopropyl Alcohol (70%) | Stubborn grime on ADAS lenses | Evaporates quickly, no residue | Medium (use sparingly) |
| Vinegar Solution (50/50) | Water spot removal | Mild acid can degrade coatings over time | Medium-High |
| Household Glass Cleaner | Not recommended | Ammonia etches and clouds plastic | High |
| Headlight Polish/Restorer | Oxidized, yellowed headlights | Abrasive; removes a thin layer of plastic | N/A (for restoration only) |
Start by rinsing the lens with clean water to remove loose debris. Create a sudsy solution with car shampoo and gently wipe the lens with a wet microfiber towel using a circular motion. Rinse thoroughly. For drying, use a second, dry microfiber towel and gently pat or wipe. To protect the lens and make future cleaning easier, apply a spray-on ceramic sealant.
When cleaning an ADAS camera lens, be extra gentle. A small amount of isopropyl alcohol on a microfiber towel can dissolve stubborn sap or bugs, but use it infrequently. The goal is clarity without scratches or residue that could distort the camera's view.
