Diagnostic Functions: Programming
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.
To increase the security of the immobilizer system, the central electronic module (CEM) and the engine control module (ECM) are linked to each other with codes. Codes must be programmed in when replacing a control module in order for the vehicle to be started. Programming replaced control modules takes place automatically when downloading software into the new control module.