Is It Harmful for a Car to Be Exposed to Rain Continuously?

1 Answers
MacColin
07/29/25 12:57pm
Due to the protective function of the car's surface paint, the impact of rain on the car is generally minimal. Below are some maintenance tips after your car has been exposed to rain: Timely Car Washing: Rainwater in urban areas is usually acidic and may carry sticky substances. Once the rainwater evaporates, these sticky substances can adhere to the car and become difficult to remove. It is advisable to take your car to a 4S shop or a professional car detailing service as soon as possible for a thorough cleaning. Pay special attention to cleaning the gaps under the doors and the sludge inside the wheel hubs, and ensure these areas remain dry. Paint Care: Rainwater often contains acidic substances that can corrode the outer glossy layer of the car paint. Additionally, rainwater carries invisible dust particles that can oxidize when exposed to sunlight. After rain, it's best to perform a paint treatment on your car. A simple and effective method is waxing. Brake System Maintenance: Most car braking systems use a dual-circuit vacuum-assisted hydraulic system, and the brake fluid, which transmits braking force, is highly hygroscopic. If rainwater enters the brake fluid, it can lead to brake failure or even complete loss of braking. Therefore, during maintenance, it is crucial to check the brake fluid and any water traces on the brake discs to ensure the safety of the driver and passengers.
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