How do I troubleshoot the malfunctioning radio in my Audi A2?

I recently purchased a used Audi A2 and the radio does not seem to be working. Is this a common issue with this model and how can I fix it?

Make sure the radio is properly connected to the car's power source. Sometimes the wiring can come loose and cause issues with the radio.

Try resetting the radio by disconnecting the car battery for a few minutes. This can often solve any software issues that may be causing the malfunction.