WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Attach SRS Airbag Date Decal
Courtesy of VOLVO CARS OF NORTH AMERICA.
Do not forget to replace the airbag date decal on the B-post on the drivers side with the new decal included with the new steering wheel module.