Mercedes-Benz CLS-Class 2014 Owners Manual - Manual (Page 260)

Tires
Display messages Possible causes/consequences and M Solutions
Check
Tire Pressure Soon The tire pressure loss warning system has detected a significant
loss in pressure.
A warning tone also sounds.
G WARNING
With tire pressures which are too low, there is a risk of the
following hazards:
R they may burst, especially as the load and vehicle speed
increase.
R they may wear excessively and/or unevenly, which may greatly
impair tire traction.
R the driving characteristics, as well as steering and braking, may
be greatly impaired.
There is a risk of an accident.
X Stop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
X
Secure the vehicle against rolling away (
Y
page 167).
X Check the tires and, if necessary, follow the instructions for a
flat tire (
Y
page 321).
X Check the tire pressures and, if necessary, correct the tire
pressure.
X Restart the tire pressure loss warning system when the tire
pressure is correct (
Y
page 342).
Check Tire Pressure
Then Restart Run
Flat Indicator
The tire pressure loss warning system generated a display
message and has not been restarted since.
X Set the correct tire pressure in all four tires.
X Restart the tire pressure loss warning system (
Y
page 342).
Run Flat Indicator
Inoperative The tire pressure loss warning system is faulty.
X Visit a qualified specialist workshop.
Rectify
Tire Pressure The tire pressure is too low in at least one of the tires, or the tire
pressure difference between the wheels is too great.
X Check the tire pressures at the next opportunity (
Y
page 342).
X If necessary, correct the tire pressure.
X
Restart the tire pressure monitor (
Y
page 345).
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