What's the matter with the automatic start-stop malfunction?
2 Answers
The reasons for automatic start-stop malfunction include: 1. The water temperature has not risen after a cold start (normally 70°C is the threshold). 2. The outside temperature is below 5°C, or the interior temperature is below 20°C when the heater is on. 3. The steering wheel angle is greater than 30°. 4. The driver in the front seat has not fastened the seat belt. 5. Parking on a slope (e.g., a gradient of 10% or more). Information about automatic start-stop is as follows: 1. Engine automatic start-stop is a system that automatically shuts off the engine when the vehicle temporarily stops during driving (e.g., at a red light). When it's time to move forward again, the system automatically restarts the engine. Its English name is STOPSTART, abbreviated as STT. 2. The STT intelligent fuel-saving system is a set of systems that control engine start and stop. It works by implanting an enhanced motor with idle start-stop function into a traditional engine, allowing the engine to completely shut off and stop working when the vehicle meets the idle stop conditions.
If the auto start-stop function in my car suddenly malfunctions, it's mainly due to battery issues. I've seen many cases where the battery ages over time, leading to insufficient power, and the system automatically shuts it off to protect core components. Other common causes include the brake pedal not being pressed firmly enough, sensors failing to detect safe conditions, or the engine temperature being too low or too high, which can temporarily disable the start-stop function. Additionally, untimely software updates or system setting confusion can also trigger faults. I recommend regularly checking the battery voltage and health status, as such problems are more likely to occur in summer or winter. If a malfunction occurs, it's best to visit a professional repair shop as soon as possible for diagnosis and repair to avoid affecting fuel efficiency and overall driving experience.
