Underbody

In areas where road salt is used in winter, the underbody must be cleaned regularly. This will prevent dirt and salt from building up and causing the acceleration of corrosion on the underbody and suspension. Before the winter period and again in the spring, the underseal must be checked and, if necessary, re-treated.
See also:
Styling & Quality
I won't waste much virtual ink describing the M's styling revisions; they're
better shown in the thumbnails at right. Suffice it to say the M looks much like
it did before, though certain elements ...
Safety
As of this writing, the 2011 QX56 hasn't been crash-tested.
Standard safety features include front and side-impact airbags, side-curtain
airbags for all three rows, an electronic stability system ...
General maintenance
During the normal day-to-day operation of the vehicle, general maintenance should be performed regularly as prescribed in this section. If you detect any unusual sounds, vibrations or smells, be sure ...
