Check the coolant level in the expansion tank

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.

Fig 1: Identifying Expansion Tank

Courtesy of VOLVO CARS OF NORTH AMERICA.

Top up with water and coolant as necessary (when the engine is at operating temperature).

Raise the car.

Check that there is no oil leakage at:

the connections for the oil pipes on the gearbox
the side cover
the side cover around the drive shaft.