How to troubleshoot ABS issues in Audi 80?

I recently noticed my Audi 80's ABS light keeps turning on, even when driving on dry roads. How can I troubleshoot and fix this issue?

The first step would be to check your ABS sensor. If it's dirty or damaged, it could be sending incorrect signals to the computer. Use a clean cloth and rubbing alcohol to clean the sensor, and if that doesn't work, it may need to be replaced.

Another possible cause could be a faulty ABS control module. This is a common issue in older Audi 80 models. Check for any visible damage to the module, and if it looks fine, have it tested by a mechanic.