Removing the hose for the heater pipe
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.
Disconnect the hose from the heater pipes at the firewall so that the pipe in the heater unit is not damaged when lowering the engine (the rubber hose is short).
Twist the catch (see the arrow) on the hose connection. Pull the quick-release connector straight out. A small amount of water should run out (tie the hose up).
Disconnect the ground strip (applies to older models).