A5 The steering wheel airbag is fixed on the steering wheel with a circlip. First, remove the combination switch cover. There are two small holes behind the steering wheel. Put a thin screwdriver through these two holes respectively, and then move the circlip to the center of the steering wheel to remove it. Airbag is one of the important configurations for passive safety of automobiles. The more airbags in the car, the safer it is. The more airbags, the more upscale the car. For example, ordinary cars with double airbags, four airbags and six airbags are already very good, while high-end cars may have nine airbags, ten airbags or even more. Airbags are used to protect the lives of drivers and passengers. For example, the airbag on the steering wheel can pop up at the moment of collision to protect the driver's head and chest. But the question is, the gap on the steering wheel is so small, how can the airbag pop up instantly? In fact, the airbag did not pop out of the gap in the steering wheel, but the cover in the center of the steering wheel was smashed instantly, thus breaking the cover. The cover in the center of the steering wheel looks smooth from the outside, but there is a carefully designed line under the cover. The plastic thickness of this line is generally only 0.5 mm or even thinner, which is the legendary tear seam. This is also the key of airbag design, which is determined by a large number of experiments under different conditions.