How do I properly maintain the Quattro all-wheel drive system in my Audi A4?

I want to make sure that my A4's Quattro system is functioning at its best for optimal performance, but I am not sure what steps I need to take. Can you provide some guidance on maintaining it properly?

The most important thing to remember is to change the Quattro system's fluid at every 40,000-mile interval to ensure proper lubrication and function. Additionally, regularly inspect the axles for any damage and replace them if necessary.