What does the 'A' with a circle mean on a car?

2 Answers
SanBryce
09/03/25 7:08am
Car's 'A' with a circle is the switch for the auto start-stop system. Pressing this button can turn the auto start-stop system on or off. Here is the relevant information: 1. The auto start-stop system automatically shuts off the engine when the vehicle comes to a temporary stop (such as at a red light) and restarts the engine when it's time to move again. 2. The auto start-stop system is equipped with an enhanced motor that has idle start-stop functionality, allowing the engine to completely shut off when the vehicle meets the conditions for idling. When the vehicle needs to start moving again, the idle start-stop motor system quickly responds to the driver's command, rapidly restarting the engine for seamless transition, thereby reducing fuel consumption and exhaust emissions.
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DeKai
09/15/25 8:29am
I'm particularly fond of studying automotive features. That circular A icon on the dashboard represents the Auto Start-Stop System, which automatically shuts off the engine when stationary to save fuel. When I encounter red lights or traffic jams while driving, the engine cuts off after I brake to a stop; it instantly restarts when I release the brake or press the accelerator. This technology, achieved through sensors and enhanced battery design, can reduce emissions and save 5-10% on fuel costs, especially effective in urban driving. However, sometimes when using air conditioning or audio systems, the system shortens the shutdown duration to maintain battery charge. Common issues include system failure due to battery aging, requiring timely maintenance. I recommend regularly checking battery health to ensure the system functions properly.
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