2008 Volvo S80 Owner's Manual - Page 51

The batteries should be replaced if: The information symbol illuminates and Replace car key battery is shown in the display and/or if the locks do not react after several attempts to unlock or lock the vehicle. NOTE The remote key's range is normally approximately 60 ft (20 m) from the vehicle. See page 59 for information on replacing the battery. Common functions - Remote key/Personal Car Communicator (PCC) Lock Unlock Approach lighting Trunk unlock Panic alarm Buttons on the remote Lock - Press the Lock button on the remote once to lock all doors and the trunk. The turn signals will flash once to confirm locking. Unlock - Press the Unlock button on the remote once to unlock the driver's door. The turn signals will flash twice to confirm unlocking. After a short pause, press the Unlock button a second time within 10 seconds to unlock the other doors and the trunk. This function can be changed so that all doors unlock at the same time under Car settings unlock. See page 123 for a description of the menu system. lock settings Doors,