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Can Water Enter the Transmission When a Vehicle Crosses Water?

2 Answers

ElliotLynn

07/25/25 5:15am

Whether water enters the transmission when a vehicle crosses water depends on the specific situation. Here is a detailed introduction about automotive transmissions: 1. Overview: A transmission is a device that changes the speed ratio and direction of motion, typically located between the clutch and the central drive. It can alter the torque, speed, and direction of motion transmitted from the driving shaft to the driven shaft under different working conditions. Gear-driven transmissions generally consist of a housing and several gears. 2. Classification: Automatic transmissions have become mainstream internationally, mainly including AT, AMT, CVT, and DCT types. Early AT transmission systems were primarily 4AT. AT transmissions use an electronically controlled automatic operating system to achieve automatic shifting. CVT is a true continuously variable transmission with fewer parts and a smaller size. DCT has two clutches.

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Miles

08/10/25 5:40pm

As someone who frequently helps out at auto repair shops, I've seen many cases of transmission water ingress after vehicles go through floods. This happens because transmissions typically have vent holes designed into them. When a car drives into deep water, water pressure can force liquid through these vents, contaminating the transmission fluid and causing internal components to rust. If the sealing rings are aged or cracked, water can enter even more easily, leading to poor transmission performance or even complete failure. If you notice the transmission fluid turning milky white or hear unusual noises while driving, it's a clear sign of water intrusion. You should stop using the vehicle immediately and seek professional repair, as delay can lead to exorbitant repair costs. When driving through water, always control your speed and avoid depths exceeding the wheel hub center. Never charge through blindly to prevent unnecessary trouble - prevention is always better than costly repairs after the fact.

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