How to use the A-circle button in automatic transmission?

2 Answers
DeIvan
07/24/25 9:24am
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).
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HenryLee
08/11/25 4:48am
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.
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