What does it mean when the engine automatically shuts off after stepping on the brake at a red light?

[StJeffrey]

When the engine automatically shuts off after stepping on the brake at a red light, it is the engine auto start-stop function, not a malfunction. The engine auto start-stop function automatically shuts off the engine when the vehicle comes to a temporary stop (such as at a red light) during driving and automatically restarts the engine when it's time to move forward again. This system is suitable for stop-and-go urban driving conditions and can achieve up to 15% fuel savings in city driving. Precautions for the engine auto start-stop function include: 1. It will not activate when the engine temperature is insufficient, avoiding frequent engine starts when the engine is cold to prevent damage; 2. It will not activate when the battery voltage is not fully sufficient, ensuring a smooth restart without affecting the engine due to insufficient voltage.