What is the reason why the Envision does not move when stepping on the accelerator uphill?

[VivianDella]

The reason why the Envision does not move when stepping on the accelerator uphill is clutch slippage. The following are specific details about the related content: 1. Manifestation: Clutch slippage mainly manifests as the vehicle speed not increasing with the rise in engine RPM during acceleration while driving. The engine's power cannot be fully transmitted to the drive wheels, resulting in weak driving force, especially noticeable when going uphill. 2. Cause: The main reasons for clutch slippage are insufficient friction of the clutch friction plate; shifting gears prematurely or disengaging before the clutch is fully engaged; prolonged driving with the clutch partially engaged or coasting with the clutch pedal depressed; and abnormal wear of the clutch plate caused by abruptly stepping on the accelerator when the gear is not fully engaged or disengaged.