2005 Saab 9-5 Owner's Manual - Page 103

Saab 9-5 Audio System 101 Security lock The Audio System is equipped with an electronic security lock. The special code is unique to the car in which the Audio System is fitted. Each time the Audio System is switched on, a check is made to ensure that the codes match. If not, the following will appear on the display: If the security code for the CD changer does not match when the changer is selected, the following will appear on the display: If a CD changer is to be retrofitted or if you wish to move the main Audio System module and/or CD changer to another car (Saab 9-5), you must consult an authorized Saab dealer so that the modules can be given the correct security codes. If a CD changer has been installed, it will also have been security coded.