Resetting the reserve battery
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.
This service is used when the reserve battery has been replaced to reset the value to 100%. If the reserve battery has been replaced in a phone module (PHM) with Volvo On Call/Volvo On Call Plus functionality, the algorithm of the battery must be reset.