How do I reset the tire pressure warning light in my Audi A4?

I recently changed my tire pressure and now the warning light won't go off. How can I reset it?

To reset the tire pressure warning light, first make sure all tires are properly inflated according to the recommended pressure listed in your Audi A4's manual. Then, start the car and drive it for at least 10 minutes at speeds exceeding 20mph. The system will automatically recalibrate and the warning light should turn off.