The Audi A3 cabriolet is one of the most sought-after luxury cars in the world due to its aesthetic design and powerful performance. However, like every other luxury car, it has also got its fair share of issues and you might encounter the illumination of the gearbox warning light in your Audi A3 cabriolet. There are various factors that lead to the illumination of the warning light. Have a look at the slide to know the 5 reasons behind the illumination of the gearbox warning light.