What are the reasons for the Cadillac auto start-stop not working?
2 Answers
Automatic start-stop not working for the following reasons: 1. Accidentally pressing the auto start-stop button: Generally, vehicles equipped with auto start-stop function have the system enabled by default. If it suddenly stops working, it might be due to accidentally pressing the auto start-stop button on the car, causing the system to shut down. 2. Manual transmission conditions not met: For manual transmission cars, the conditions for auto start-stop to activate are more complex. The system will only start when it recognizes the three actions of "shifting to neutral, pulling the handbrake, and releasing the clutch" when the car is parked. 3. Different designs of auto start-stop systems: Different models from various brands have different designs for the auto start-stop system. Taking the New Passat's auto start-stop system as an example, certain conditions must be met. Specifically, the seatbelt must be fastened, and the front left door must be closed.
Having driven for several years, I've found that auto start-stop malfunctions are often related to battery issues. When the battery charge is too low, the system automatically disables the start-stop function to prevent engine restart failure, especially common with aged or undercharged batteries. Temperature also plays a role – extreme summer heat or winter cold may cause the system to deactivate to protect engine components until optimal operating temperature is reached. On my Cadillac, I once encountered a faulty sensor (like a malfunctioning brake position sensor) causing system misjudgment. Additionally, if the air conditioning is running, the system prioritizes keeping the engine idling to maintain cabin comfort. My advice: first check battery voltage – consider replacement if too low, or visit a workshop for diagnostic trouble code scanning. Regular battery maintenance helps prevent such hiccups and ensures proper system operation.
