What is the reason for i-stop reset after battery replacement?
2 Answers
The reason for i-stop reset after battery replacement is: the main board's battery has a memory function, and removing the battery causes the system to lose power, hence requiring a time reset. i-stop, known as auto start-stop in Chinese, refers to the system where the vehicle automatically turns off the engine during temporary stops while driving and restarts it when moving forward is needed. Normally, i-stop is automatically activated, indicated by a green light on the dashboard. When the i-stop light turns yellow, it means the auto start-stop is turned off, indicating the system cannot function properly at that time. The conditions limiting i-stop usage include: insufficient battery charge, too high or too low temperatures, wheels in a turning state when stopping, too steep a slope, seatbelt not fastened, etc.
As a car enthusiast who loves tinkering with vehicles, I've experienced issues with the i-stop system after multiple battery replacements. This happens because the i-stop system relies on the memory function of the car's electronic control unit (ECU) - just like how a phone loses its settings. The moment power is cut during new battery installation, the system's stored driving data gets wiped clean. The system originally determines when to stop the engine based on your driving habits, but after a battery change, it needs to relearn and adapt - for example, remembering how long you typically stop at red lights in city driving. Without resetting, it may execute randomly, causing unnecessary engine shutdowns or refusing to work at all, which not only wastes fuel but also increases emissions. Every time I replace the battery, I remind the technician to perform a system calibration using professional diagnostic equipment to read and adjust the ECU data - it's simple and safe. Additionally, using the recirculation mode for the air conditioning more often can reduce battery load and help prevent similar situations.
