Replacing the relay for the electrical engine block heater: Notes
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2006 Volvo S80, 2005 Volvo S80, 2004 Volvo S80, 2003 Volvo S80, and 2002 Volvo S80. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
There is a relay for the accessory electronic module which is positioned on the underneath of the left front member. This may be positioned on its own or connected via an adapter socket for a charger or electrical engine block heater.