Audi A3's power steering fluid is located in the power steering fluid reservoir behind the left front headlight. Power steering fluid is a special liquid used in the car's power steering pump. Through hydraulic action, it can make the steering wheel very light, similar to automatic transmission fluid, brake fluid, and shock absorber fluid. More details about power steering are as follows: 1. Power steering is a new comfort-enhancing technology in cars, which automatically provides steering force when the driver turns the wheel, thereby reducing the driver's steering labor intensity. Power steering fluid is a medium oil added to the power steering system, serving to transmit steering force and provide cushioning. 2. The power steering systems configured in cars can be roughly divided into three categories: the first is the mechanical hydraulic power steering system; the second is the electro-hydraulic power steering system; and the third is the electric power steering system. 3. Generally, car manufacturers do not strictly specify the replacement cycle for power steering fluid. Most car maintenance and repair shops will refer to service companies in the same industry, learning from each other's strengths. Some more standardized companies may refer to the car maintenance requirements of foreign automobile companies and make more reasonable regulations based on current road conditions, air quality, and the technical level of users.
