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What are the symptoms of low transmission fluid in a sedan?

1 Answers

McGavin

07/29/25 7:19pm

When a sedan's transmission is low on fluid, the transmission noise becomes more noticeable, especially during high-speed driving, which affects driving comfort. Additionally, without the lubricating effect of transmission fluid, gear shifting becomes noticeably rougher. In severe cases, this can lead to increased internal temperatures in the transmission, potentially damaging internal components. Below is an introduction to transmission fluid: 1. Transmission fluid is an oil product that keeps the gear system clean, ensuring the transmission operates in good condition and, to some extent, prolonging the lifespan of the transmission components. The most obvious symptom of insufficient transmission fluid is increased noise, particularly at high speeds, significantly impacting driving comfort. 2. Without the lubricating effect of transmission fluid, gear shifting becomes rougher, especially in winter when shifting gears feels worse. In severe cases, this can cause the transmission's internal temperature to rise, potentially burning out internal components, requiring repairs. 3. Transmission fluid has a replacement cycle, but this should be determined based on actual conditions. If the aforementioned shifting and noise issues occur, it could also be due to degraded transmission fluid. In such cases, check the color of the transmission fluid (bright red). If the color has noticeably darkened or turned black, it indicates the fluid has degraded and needs replacement.

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