Mercedes-Benz 2009 CLS-Class Operator's Manual page 272

Practical hints
Vehicle status messages in the multifunction display
Display messages
Check Tires
G 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.
G Warning!
Follow recommended tire inflation pressures.
Do not underinflate tires. Underinflated tires wear excessively and/or unevenly, adversely affect handling and fuel economy, and are 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) because they are more likely to become punctured or damaged by road debris, potholes etc.
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Possible cause/consequence
Vehicles with Advanced TPMS (Canada
only):
The tire pressure in one or more tires is
already below the minimum value.
The respective tire is indicated in the mul-
tifunction display.
Possible solution
X
Carefully bring the vehicle to a halt, avoiding
abrupt steering and braking maneuvers.
X
Check and adjust tire pressure as required.
X
If necessary, change the wheel ( Y page 314).