If your quest2 is not controlled by the handle, you can check whether the handle control cable is damaged. If you tear the interface of the handle control cable when disassembling, you can directly replace the handle control cable. If you find that the golden finger of the handle control cable is worn, water, corrosion, oxidation and other problems lead to the inability to control the handle. Please replace the handle control cable directly. Note: The golden finger of the handle control cable needs to be installed downward, and the handle accessories need to be removed during installation. You can see the installation video on YouTube to help you better disassemble.