Tire wear

When the tread is worn down to 1/16th of an inch (2 mm), tires must be replaced to help prevent your vehicle from skidding and hydroplaning. Built-in treadwear indicators, or “wear bars”, which look like narrow strips of smooth rubber across the tread will appear on the tire when the tread is worn down to 1/16th of an inch (2 mm).
When the tire tread wears down to the same height as these “wear bars”, the tire is worn out and must be replaced.

See also:
Why maintain your vehicle?
Carefully following this schedule helps protect against major repair
expenses resulting from neglect or inadequate maintenance and may also
help to increase the value of your vehicle when you sell ...
Infotainment systems
The new MKS offers two audio systems, both controlled through MyLincoln
Touch. The standard system includes AM/FM/CD/MP3/satellite sources playing
through a 210-watt system that drives 10 speakers. ...
SOS Post-Crash Alert System™
The system automatically flashes the turn signal lamps and sounds the
horn three times at four second intervals in the event of a serious impact
that deploys an airbag (front, side, side curtain [ ...
