What's the matter with the automatic start-stop system failure of Audi A4L?
2 Answers
The reasons for the failure of the automatic start-stop function: 1. Generally, vehicles equipped with the automatic start-stop function have the system enabled by default. If it suddenly stops working, it may be due to accidentally pressing the automatic start-stop button on the car, causing the system to turn off. Check if the system has been turned off. 2. If the car is a manual transmission, the activation conditions for the automatic start-stop are more complex. When parking, the system will only activate after recognizing three actions: "shift into neutral, pull the handbrake, and release the clutch." 3. The automatic start-stop system failure could be due to wiring issues or other reasons causing the system to malfunction. In such cases, it's best to take the car to a 4S shop for inspection and repair.
Last time I took my A4L for an outing, I encountered a start-stop failure, which is actually quite common. Battery aging is the most frequent issue because the start-stop system is particularly power-hungry. If the battery has been used for more than three or four years, it usually can't handle it anymore. Dust accumulation on the brake pedal sensor can also cause misjudgment—that time, I just opened it up and cleaned it, and it worked fine again. Another small detail is that the seatbelt must be securely fastened; if the system doesn't detect the buckle, it won't operate. Extreme cold or hot weather can also affect it—I remember once after a scorching summer day, the start-stop system was completely inactive for over forty minutes. For regular maintenance, it's recommended to periodically check the battery capacity and not wait until it completely dies to address the issue, especially since replacing a battery at the dealership can cost nearly two thousand yuan.
