2008 Mercedes SLK-Class Owner's Manual - Page 214

Controls in detail Audio system A light-emitting diode in the buttons shows the status of the corresponding magazine slot. CD loading slot 1 is above buttons 2 and is used to load CDs. LEDs no LED is lit Magazine slot is empty. Magazine slot is in use. CD is being ejected. Loading single CDs Open the glove box ( page 253). Loading the CD magazine Briefly press button 2 for the empty magazine slot that you would like to use. The light-emitting diode in the magazine slot button flashes in green. INSERT CD appears in the display along with the slot number. The flashing light indicates that the CD changer is ready to receive a CD. Insert an audio CD into CD loading slot 1 within 5 seconds, label side up. The CD is pulled in and played. Close the glove box. i If a CD has been inserted incorrectly or cannot be read, WRONG CD0 will appear in the display. Loading one or more CDs interrupts the CD playback. green LED flashes CD can be loaded. red LED is lit red LED flashes 1 CD loading slot 2 Magazine slot button 213