How TO turn off mute on Mercedes clk 320 RADIO?

To turn off mute on a Mercedes CLK 320 radio, locate the "MUTE" button on the radio or steering wheel controls. Press the button once to unmute the audio. If the audio is still muted, check the volume knob and turn it up to ensure sound is restored. Additionally, you can also try toggling the radio source or turning the system off and back on.