Seat Belt Reminder
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2009 Volvo S60, 2008 Volvo S60, 2007 Volvo S60, 2006 Volvo S60, and 2005 Volvo S60. However, it is still accessible from the selected car via links, so may be relevant.
The seat belt reminder is activated when the upper electronic module (4/70) receives a signal from the central electronic module (4/56), via the Control area network (CAN), which indicates that the seat belt is not engaged despite someone sitting in the front seat. Data is also transmitted to the driver information module (5/1) which indicates to the driver that the seat belt is not being used in one of the front seats.