I don't have the manual for the Command Center for my 2004 SL600. I'd like to activate the Sirius radio. Sirius needs the EIN number for the radio and told me to press the SAT button and then the button below for the EIN but that didn't work. Can someone look up how to reveal the EIN number for the 2004? I know in 2005 it changed to soft buttons - I assume that is a touch screen?