What are the common electrical issues in the Audi A2 and how can they be fixed?

I recently bought an Audi A2 and have noticed some electrical issues. Can you provide some insight on what they might be and how I can fix them?

One common issue with the Audi A2 is a faulty crankshaft position sensor. This can cause issues with the engine starting or stalling while driving. To fix this, you may need to replace the sensor or check for any loose connections.