Will Water Ingress Affect the Golf 7's Horn?
2 Answers
Water ingress into the car horn can have an impact on the vehicle. Below are effective methods to prevent water from entering the car horn: 1. Elevate the Position: Try to install the horn as high as possible and at a downward 60-degree angle. This is the optimal position because it not only effectively prevents water from entering the horn but also allows any water that does enter to drain out naturally without accumulating inside. 2. Use a Shield: Find a board with good waterproofing properties (a regular plastic board will suffice if a specialized one is unavailable) and secure it to the gap between the bumper and the front left wheel. This will effectively block water splashed up by the wheels.
I've experienced water ingress in the horn of my Golf 7 several times after rain or car washes, which is quite a common issue. Initially, it just caused muffled sound or buzzing noises, but later it became severe enough to completely silence the horn. Water entering the horn can easily oxidize the coil and circuit board, leading to short circuits or permanent damage, and may also blow the fuse. Once, I had to use a hair dryer for several hours to dry it out before it worked again, but the sound quality was never the same afterward. I recommend checking the door seals for aging promptly, as this is a common problem area in the Golf 7. If water does get in, it's best to stop the car immediately to let the water drain out and avoid turning on the audio system to prevent further short circuits. Leaving it untreated for a long time may require replacing the horn, which can be costly. Prevention is key—avoid spraying water directly at the doors during car washes.
