WARNING: This page is about a different car, the 2010 Volvo V70, 2009 Volvo V70, and 2008 Volvo V70. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Removing Passenger Air Bag Rotary Switch (1 Of 4)
Courtesy of VOLVO CARS CORPORATION
Fig 2: Removing Passenger Air Bag Rotary Switch (2 Of 4)
Courtesy of VOLVO CARS CORPORATION
Fig 3: Removing Passenger Air Bag Rotary Switch (3 Of 4)
Courtesy of VOLVO CARS CORPORATION
Fig 4: Removing Passenger Air Bag Rotary Switch (4 Of 4)