The Lexus A960E transmission is designed for reliability, but wear in the valve body's critical hydraulic circuits can occur over time. Key areas of concern include main line pressure and main boost pressure, which are vital for ensuring consistent operation and overall system efficiency. Secondary pressure and lube pressure may also degrade, increasing the risk of overheating or inadequate lubrication. Issues with torque converter apply and release pressure can lead to slipping or shuddering during operation. Additionally, wear in solenoid regulation pressure and accumulator pressure may cause delayed responses or erratic shifting.