How do I properly maintain the Audi A5's all-wheel drive system?

I want to make sure my Audi A5's all-wheel drive system stays in top shape. What steps should I take for proper maintenance and how often should I do them?

Regularly inspect and replace all-wheel drive fluid every 30,000 miles for optimal performance and longevity. Additionally, make sure to clean and lubricate all relevant components to prevent any potential issues.

Consider investing in a separate set of winter tires to ease the strain on your all-wheel drive system during colder months. This will also provide better traction on snowy or icy roads.

Pay attention to any warning lights or unusual noises that may signify a problem with your all-wheel drive system. It's always better to address any issues early on before they become more costly and potentially dangerous.