How can I activate the anti-lock brake system (ABS) light if it is not working properly on my Audi A3?

I recently noticed that the anti-lock brake system (ABS) light on my Audi A3 is not turning on when I start the car. How can I activate this warning light to ensure my ABS is functioning properly?

To activate the ABS light on your Audi A3, start the car and put it in the 'on' position without starting the engine. The ABS light should flash for a few seconds and then turn off, indicating that it is functioning properly.

If the ABS light on your Audi A3 is not turning on when you start the car, it may indicate a faulty ABS sensor. It is recommended to have this checked and replaced if necessary by a certified mechanic.