Why does the Volkswagen start-stop function fail?

[StParker]

Reasons for the failure of Volkswagen's start-stop function include the seat belt not being fastened; the driver's door not being closed; the battery temperature being too high or too low; the vehicle being on a steep slope; the cabin being heated or cooled and not yet reaching an acceptable temperature; the HVAC system being set to full defrost mode with the blower at high speed; the engine not yet reaching normal operating temperature, or the transmission not being in forward gear. Below is an expanded introduction: 1. Introduction to the start-stop system: The start-stop system, translated as the Start-Stop system in English, is when the vehicle is in a stopped state (not in park), the engine will pause operation (instead of maintaining traditional idle speed). During this pause, the lubricating oil inside the engine continues to circulate, keeping the engine internally lubricated. When the brake pedal is released, the engine will start again. 2. Advantages of the start-stop system: Because the lubricating oil keeps circulating, even with frequent stops and starts, it will not cause wear to the internal parts of the engine.