Slacken off steering wheel screws
WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.
Courtesy of VOLVO CARS OF NORTH AMERICA.
Slacken off the two screws (Torx 30) on the reverse of the steering wheel. The screws must not be removed, but remain in the counter sunk holes in the steering wheel. Turn the steering wheel to access the screws.