How TO turn off mute on Mercedes clk 320 RADIO?

1. Press the "Volume" knob on the radio.

2. Turn the knob clockwise until the sound is at the desired level.

3. If the radio is still muted, press the "Mute" button on the steering wheel.

4. The "Mute" button will light up when it is activated.

5. Press the "Mute" button again to deactivate it.