Can You Wash a Car When It's Hot?

1 Answers
LaRosalie
07/30/25 3:34am
You should not wash a car when it's hot for the following reasons: 1. Brake disc deformation: Washing the car at high temperatures, especially after high-speed driving, may cause the brake discs to deform due to thermal expansion and contraction, leading to vibrations during braking. 2. Engine block deformation: Washing the car when it's hot may cause the engine block or transmission to contract and deform, or even crack, if cold water comes into contact with them due to thermal expansion and contraction. Additional precautions for car washing: Apart from avoiding washing a hot car, you should also avoid spraying water on water-sensitive parts or components such as the intake tract, relays, sensors, and high-voltage wires. Either avoid these areas or take waterproof measures when washing.
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