What are the reasons for the malfunctioning of the Buick Excelle's auto start-stop system?
2 Answers
Here are the detailed explanations regarding the Buick Excelle's auto start-stop system: 1. Reasons for the malfunctioning of the Excelle's auto start-stop system. The auto start-stop function may not work due to a very low vehicle battery charge, excessively high temperature, brake system pressure dropping below a certain point, or excessively high or low external temperatures. 2. Auto start-stop failure. The auto start-stop may fail because the engine has not reached normal operating temperature, the auto air conditioning has not reached the preset temperature, the battery charge is insufficient, the steering wheel is turned after stopping, the vehicle is in emergency braking or reverse gear, or there is a fault in the auto start-stop system. This could be due to wiring issues or other reasons causing the start-stop system to malfunction. It is best to promptly visit a 4S shop for inspection and repair.
As a seasoned driver who has been driving the Excelle for several years, I get frustrated when the auto start-stop system stops working. It's supposed to save fuel and money, but it occasionally goes on strike. The most common issue is battery-related; when the original AGM battery ages or has insufficient charge, the system automatically disables start-stop to protect startup performance if the voltage drops too low. Temperature is another major factor; extreme summer heat or winter cold can cause the engine and external sensors to detect unsafe conditions and deactivate the system. Additionally, if the air conditioning is set to high cooling or heating, the system may determine that the engine must keep running to maintain power supply. I once found that an off-center steering wheel or a loose seatbelt could also trigger system deactivation. The solution is actually straightforward: first, check if the battery connections are loose and use a multimeter to verify the voltage is above 12V; then have a technician inspect the sensors and reset the system. Ignoring it can lead to significantly higher fuel consumption, especially during traffic jams where idling burns fuel inefficiently. Make it a habit to perform regular maintenance checks—don't wait until a major issue affects driving safety, as this feature in the Excelle is quite practical.
