Mercedes-Benz S 450 4MATIC Operator's Manual page 701

Practical hints
What to do if ...?
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Caution
Tire Defect
Warning!
Do not drive with a flat tire. A flat tire affects
the ability to steer or brake the vehicle. You
may lose control of the vehicle. Continued
driving with a flat tire will cause excessive
heat build-up and possibly a fire.
Follow recommended tire inflation pres-
sures.
Do not underinflate tires. Underinflated tires
wear excessively and/or unevenly, adverse-
ly affect handling and fuel economy, and are
700
Possible cause/consequence
One or more tires are deflating. The respec-
tive tire is shown in the multifunction dis-
play.
G
more likely to fail from being overheated. Do
not overinflate tires. Overinflated tires can
adversely affect handling and ride comfort,
wear unevenly, increase stopping distance,
and result in sudden deflation (blowout) be-
cause they are more likely to become punc-
tured or damaged by road debris, potholes
etc.
Possible solution
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
Engage the electronic parking brake
( page 422).
If necessary, change the wheel ( page 723).