What does Service tire Mobility kit mean

What is your question?

I have a 2014 Lincoln MKZ Hybrid. In the dashboard information window the one screen on the left. This message come on every time I start the car. The message is "Service Tire Mobility Kit" and in the right bottom corner it has a box that has OK in it. I hit the OK on the steering wheel. It will go away, but when I start the car up it comes on again. I have taken the car in to get it fixed but they do not know why it is happening. They at the dealer have not seen this message before.

What makes this problem better or worse?

hit "ok"

How long has your 2014 Lincoln MKZ had this problem?

also most a month