Hi. Does your MKS have the THX audio or the standard PREMIUM audio system? If THX audio it would be indicated on the radio itself, or on the navigation screen when turned on.
yes it has thx with big speaker and some sort of amp on driver side in trunk
Ok. There is a service bulletin provided by Lincoln to upgrade the audio control module software for various issues, depending on the vehicle build date. Can you look on the sticker on the drivers door, or door jamb, and look for the build date? It should be MM/YY format.
Thanks I wil check with my local ford dealer