What is the best way to maintain the four-wheel steering system in my Audi A8?

I recently purchased a new Audi A8 and was wondering how to properly maintain the four-wheel steering system to ensure its longevity and peak performance.

It is recommended to have your four-wheel steering system checked and maintained by a certified Audi technician every 20,000 miles. They will be able to diagnose any potential issues and perform any necessary repairs or adjustments.

Be sure to regularly check the power steering fluid level and top up if necessary. Low fluid levels can cause damage to the steering system and decrease its effectiveness on the road.