How to use the A-circle button in automatic transmission?
3 Answers
Automatic transmission A-circle button is pressed when the car is temporarily parked. Here is the relevant introduction: 1. Automatic transmission A-circle button: The A-circle button in automatic transmission is the auto hold system. The auto hold system is a technical application that can realize automatic handbrake during car operation. This technology enables drivers not to need long-term braking when the vehicle stops, and can avoid unnecessary sliding of the vehicle when starting the automatic electronic parking brake. 2. Working principle: The brake management system realizes the control of four-wheel braking through the extended function of the electronic parking brake (EPB).
When I first started driving, I didn't know what the A-circle button was for either. Later, I asked a mechanic friend and finally understood. This thing is the auto start-stop switch, which is turned on by default after most cars start. When waiting at a red light, if you press the brake pedal hard, the engine automatically shuts off to save some fuel. Release the brake, and it immediately restarts. However, I don't like using it all the time—during traffic jams, the constant shutting off and starting up is annoying, and in summer when the AC is on, the cooling can't keep up when it stops. Press the button with the circled A to turn it off, and a yellow light will show on the dashboard. Remember to turn it off during heavy rain; if water gets in and the engine tries to restart, it could be ruined. Actually, it doesn't harm the car, but you might need to replace the battery more often.
When I picked up my new car the year before last, the salesperson specifically taught me how to use this A-button. After starting the car, the auto start-stop function is enabled by default. When encountering a red light and pressing the brake pedal firmly, you can feel the engine stop, and a green leaf icon appears on the dashboard. Releasing the accelerator automatically restarts the engine. My wife dislikes the slight shake during restart, so she always presses the button to turn it off as soon as she gets in the car. Once, I almost forgot to turn it off when driving through water, which gave me a cold sweat. Now I’ve learned to be cautious: turn it off during long traffic jams, when reversing, and on rainy days, but keep it on during highway driving. This feature really saves fuel—I calculated it reduces consumption by 0.8 liters per 100 kilometers. However, the battery is expensive, costing over 2,000 yuan to replace.
