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What is the reason for the Sail AMT automatically shifting to N gear after engaging?

2 Answers

JamesLynn

08/30/25 3:24am

Here are the reasons why the Sail AMT automatically shifts to N gear after engaging, detailed as follows: Electromagnetic valve failure: The problem caused by the electromagnetic valve leads to unstable oil pressure regulation and uneven switching. The small valve core inside the electromagnetic valve operates based on electric current, which is not much different from the working valve in the valve body. Mechanical failure: Mechanical failure occurs due to internal wear of the transmission, causing this issue. Sensor data reading error: Slippage caused by brake clutch pressure leakage leads to abnormal data read by the sensor. Vehicle computer failure: Problems with the sensor and the computer board can cause the transmission to lock. Restarting the ignition will prompt the vehicle computer to recheck the transmission data, and only a restart can resolve this intermittent issue.

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Georgia

09/11/25 7:28am

The Sail AMT jumps back to N gear after shifting, and I believe the main issue lies in the electronic control system. The clutch position sensor may be malfunctioning—it monitors the clutch status, and inaccurate signals can mislead the computer into shifting incorrectly. The gear position sensor is similar; if it detects misalignment, it will directly return to N. Occasionally, the electronic control unit software may have bugs, requiring a program update. Alternatively, unstable battery voltage or insufficient power supply can cause abnormal operation of the actuator motor. The AMT system relies on precise hydraulic or motor control, and loose or oxidized wiring harness connectors may interrupt signal transmission. I’ve encountered cases where reading fault codes is the first step in diagnosis—don’t delay repairs, as it increases driving risks. Always perform a thorough check before long-distance trips.

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