These models have anti-theft radio installed therefore before you disconnect the battery make sure to have the activation code. Removing the battery can cause the car to become driveable with a scan tool needed to fix the issues, and will also result in warning lights appearing on the instrument panel, and therefore a scan tool will be required to put the light off. A majority of the public scan tools are incapable of such tasks, and may need a visit to a dealer service department or a well-equipped repair facility. To detach the steering wheel, one has to park the vehicle with straight wheels and disconnect the negative battery cable. Deactivate airbag system and then on the 1996 or 1997 A4s, two Torx screws are removed to pull off the airbag module attached to the steering wheel. Other models: Rotate the steering wheel 90 degrees to reach the spring clip hole, then with a screwdriver, unlock the pins and then unplug the airbag module electrical connector. Put the module aside (airbag side up), place the steering wheel at the center and take off the steering wheel bolt, and the three-spoke wheels on Passats will have a hex bolt whereas four spoke wheels can have a hex-head or a spline drive bolt. Once the steering wheel is removed, mark the position of the steering wheel to the shaft in case it is required and tap near the center or twist the steering wheel and pull upwards. Installation Before you install the steering wheel, make sure the airbag clock spring is centered, otherwise, you take off the steering column covers, unplug the electrical connector, and adjust the clock spring by turning the hub until it stops and then rotate the hub until you reach the center. Install the clock spring so that it is firmly in place, then so that the steering wheel is aligned with the marks and the steering wheel bolt is tightened to the required torque and a mark made indicating how many times that particular steering wheel bolt has been reused. Lastly, insert airbag and horn electrical connection parts, put in ground leads and install the airbag module on the steering wheel, and fix it accordingly depending on the model.