The outer vents on the dashboard and the seal
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.
Remove the cover on the side of the dashboard.
Remove the light switch. See Switches lights, replacing .
Detach the catches on the underneath.
Press out the lower edge. Then detach the remainder.
Replace the seal if necessary.
Install in reverse order.