I have a strange problem. 2009 c-max 1.8tdci titanium with coms pack sat nav/single cd. Intermittantly, when using voice control to operate cd player/radio etc, the female voice, prompts and repeats my commands but often will not carry out the final instruction, such as to play "track 3" or the radio frequency required. 8 times out of 10 the system behaves the remainder it will be stubborn. Now before anyone says she has not understood my voice........then why does she correctly repeat what I have said,........ she just doesn't do it. She completes each stage expect the last final command