What does it mean when the car's A light is on?
2 Answers
When the car's A light is on, it indicates that the auto-hold system is activated. Characteristics of the auto-hold system activation: When this switch is turned on, even if the vehicle is stopped by braking during driving, it will remain in the braking state and will not continue moving until the accelerator is pressed again. Function of the auto-hold system: The auto-hold system refers to an automatic braking function. Once activated, for example, when stopping at a traffic light, it eliminates the need to use the handbrake or electronic handbrake, simplifying operations. For automatic transmission models, it also avoids frequent shifting between D to N or D to P.
Over the years of driving, I've encountered the ABS light coming on a few times. The ABS light is that small indicator on the dashboard, sometimes with letters, usually yellow or red, and when it lights up, it means there might be an issue with the anti-lock braking system. I remember once driving in the rain when the light suddenly came on, and the brakes didn't feel as smooth as usual. The cause could be something simple, like the wheel speed sensor being covered in mud or snow, or a loose connection in the wiring; or it could be more serious, like a fault in the control module. In such cases, the regular brakes still work, but avoid slamming on them, as the car could skid or lose control. I recommend pulling over safely to check the tires and brakes first. If the issue isn't obvious, drive to a repair shop. Cleaning around the sensors during regular car washes can help prevent this. Similar warning lights, like the airbag light, should also be addressed promptly—after all, they're there to save lives. In short, don't panic, just drive carefully.
