What Causes the Volkswagen Wet Dual Clutch to Shake in D Gear While Stationary?
3 Answers
If the vehicle is in D gear but the brake is engaged, some noticeable shaking is normal. However, if there is still significant shaking after shifting into D gear and driving, it may be due to aging transmission mounts. In this case, it is recommended to inspect the transmission mounts. If they are indeed aged, they should be replaced with new ones. Introduction to Wet Clutch: A clutch cooled by oil is called a wet clutch. The cooling oil does not protect the friction plates but ensures smooth and gentle power transmission. Its advantages include a long service life and generally trouble-free operation, unless the clutch is frequently operated in a semi-engaged state, violating standard procedures. Working Principle of Wet Clutch: A wet clutch is a transmission device that uses hydraulic pressure for clutch engagement. It controls the driving force during both the separation and full engagement of the clutch, including situations where there is relative rotation.
I've been driving a Volkswagen for almost ten years and noticed that the wet dual-clutch transmission shakes when in D gear while stationary. The main reasons include worn or contaminated clutch plates, uneven hydraulic system pressure, incorrect calibration of the TCU control module, unstable engine idle, or insufficient transmission fluid. Clutch plates are friction components that can overheat and deform from prolonged semi-engagement, while contamination can make the contact surfaces uneven. If the hydraulic pump has insufficient oil supply or leaks, pressure fluctuations occur. Delayed TCU signals can misinterpret driver intentions, causing slight vibrations. Unstable idle may be due to carbon buildup. Insufficient or degraded fluid leads to poor lubrication. These issues are most noticeable during low-speed starts, affecting comfort. It's recommended to change transmission fluid regularly, avoid prolonged braking in D gear, and have the vehicle inspected at a service center as soon as possible.
As a regular car owner who drives in the city every day, the D-gear idle shaking of Volkswagen's wet dual-clutch transmission is quite common. I think there are several reasons: first, driving habits, such as keeping the brake pressed for a long time at red lights, which causes the clutch to semi-engage, generating heat and accelerating wear; second, oil quality issues, like old transmission fluid or contamination with water and impurities; third, inaccurate computer control, leading to erratic shift logic. Environmental factors also play a role, such as high oil temperatures in hot weather or frequent stop-and-go traffic in congestion. This shaking is not only annoying but could also lead to faster transmission damage over time. As for solutions, I try to lightly press the brake or shift to N-gear to alleviate it, and it's best to check the clutch condition every 20,000 kilometers.
