Upper Electronic Module
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 upper electronic module (4/70) transmits remote control signals about which button on the remote control has been pressed to the central electronic module via the Controller area network (CAN).