How Long Does It Take for a Car Horn to Recover After Getting Wet?

[LaLeonardo]

In general, if the horn is not severely waterlogged, no extensive treatment is necessary. Simply allow the moisture inside the horn to evaporate naturally. Once the internal moisture has evaporated, the horn's sound will return to normal. Using a Hair Dryer: For horns located in accessible areas where a hair dryer can reach, you can use the dryer to heat the internal moisture, accelerating its evaporation. Of course, once the moisture has evaporated, the horn's sound will return to normal. Disassembly and Cleaning: Directly remove the horn and thoroughly clean out the internal moisture. Since most vehicle horns are located inside the bumper, removing the bumper is often necessary to access the horn. Therefore, disassembly and cleaning should be performed at a professional 4S shop. Replacement: If the horn is damaged due to severe water exposure, the only solution is to replace the component.