Where do you add power steering fluid to 2001 Audi a4 1.8t?

The power steering fluid reservoir is located on the front, passenger side of the engine bay. It is black in color and has a yellow cap. To add power steering fluid, simply unscrew the cap and add enough fluid to bring the level up to the mark indicated on the side of the reservoir. Be sure not to overfill the reservoir, as this can cause problems with the power steering system.