If you have a remote control for the cd changer then it is going to be fm modulated into the radio and in order to hear it you will have to tune the fm to 88.3 or 89.7 or somewhere in the vicinity and you should then hear the cd sound broadcasted into your radio. The mode button only works if it is a factory set up. Good luck!

Scott@lajollaaudio

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The Mercedes Specialists Since 1986