Why must the automatic start-stop be in D gear?

[DiFinley]

After the automatic start-stop, the automatic transmission is already in D gear. Engine automatic start-stop: Engine automatic start-stop is a system that automatically shuts off the engine when the vehicle comes to a temporary stop (such as at a red light) during driving. When it's time to move forward again, the system automatically restarts the engine. Automatic start-stop precautions: If the vehicle is driving on a relatively steep slope, it's best to avoid using the automatic start-stop function. Although the start-stop time is very brief, the engine's start-stop on a slope may lead to insufficient braking assistance. When the weather is extremely hot and the air conditioning is running at full capacity, it's also advisable to turn off the automatic start-stop function.