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The audio security system is activated whenever the audio system circuit is disconnected from the battery. A four-digit security code must be entered in order for the audio system to be functional once again. The security code is stamped on a card located in the vehicle (usually in the glove box).Procedure
Wrong Code If the wrong code is entered, "ERR" will briefly appear on the display. After this, "CODE" will appear and the code entering procedure can be performed once again. If the correct code is not entered within 10 minutes , the radio should be disconnected from the battery to reset the audio system. After connecting the battery, repeat the code entering procedure.