What are the reasons for the 14th-generation Sylphy frequently displaying start-stop system faults?
2 Answers
1、Causes of start-stop system faults: (1) Insufficient battery power, unable to start. (2) Engine electronic control system malfunction. (3) Faults in the internal wiring or sensors of the automatic start-stop system. (4) Throttle blockage or other faults. 2、Start-stop technology: Refers to a system where the engine automatically shuts off when the vehicle comes to a temporary stop and restarts automatically when the vehicle needs to move forward again. Simply put, it is a system that can automatically control engine shutdown and ignition, abbreviated as STT. 3、Low temperature effects: This situation occurs more frequently in winter because the battery temperature is very low when the vehicle starts. The start-stop function will not work until the battery reaches its operating temperature. Once the vehicle is fully warmed up, the automatic start-stop will resume operation. This is normal and not a cause for concern. However, if the start-stop function does not resume after the engine coolant temperature rises, it is advisable to have it checked at a repair shop.
I've been driving the 14th-generation Sylphy for two years, and the frequent start-stop system malfunction warnings have been quite a headache. It's usually caused by battery aging or low charge. The battery is the core of the start-stop system – when it's worn out and lacks sufficient power, it directly triggers an alarm. Sometimes, dirty or damaged sensors can also cause false alarms, especially the brake sensor since the start-stop system relies on it for activation. Additionally, the system tends to be overly sensitive and prone to glitches in low temperatures or during repeated start-stop cycles. I remember when the issue first appeared, I checked if the battery terminals were loose, but that didn't help. Later, I took it to the 4S shop for a battery test and found it had less than half its lifespan remaining. Replacing it with a new one immediately solved the problem. My usual advice is to regularly check battery health – don't wait until the alarm goes off, as it might be too late. Taking it directly to a repair shop is more reliable, since safety comes first. Although start-stop malfunctions seem minor, they do affect driving mood and efficiency.
