What is the button with an 'a' inside a circle?

[DeMadeline]

The button with an 'a' inside a circle is the Auto Hold function button. It adjusts the optimal driving state according to different road conditions, effectively preventing the transmission from frequent gear shifts on rough roads and forcing downshifting during overtaking. It relies on an intelligent braking system, and only vehicles equipped with brake control systems like ESP can achieve the Auto Hold function. The advantages of Auto Hold are: 1. In situations requiring short stops, such as traffic lights, the system automatically brakes the wheels after the vehicle comes to a complete stop to prevent rolling; 2. During uphill starts, the system automatically brakes to prevent rolling back, and releases the wheels to move forward directly after starting; 3. When parking and locking the car, there's no need to pull the handbrake, as the system automatically brakes the wheels at this time.