See also:

Brake fluid
The fluid level will drop slowly as the brakes wear, and will rise when the brake components are replaced. Fluid levels between the MIN and MAX lines are within the normal operating range; ...

Airbag supplemental restraint system (SRS)
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2011 Lincoln MKZ Review
The MKZ is Lincoln's entry-level luxury sedan, but with its 2010 redesign there's not much that's entry-level about it. After driving the MKZ for a week, I'm impressed with its strong powertrain, ...