Mercedes-Benz 2011 GLK-Class Operator's Manual page 192

Display messages
190
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.
Display messages
Check
Tire Pressure Soon
Check Tire Pressure
Then Restart Run
Flat Indicator
Run Flat Indicator
Inoperative
Tire pressures
will be displayed
after driving a
few minutes
Tire Press. Monitor
Inoperative
Tire Pressure
Monitor
Inoperative No
Wheel Sensors
Possible causes/consequences and M Solutions
G
Risk of accident
The tire pressure loss warning system has detected a significant
loss in pressure.
A warning tone also sounds.
X
Stop the vehicle without making any sudden steering or braking
maneuvers. Pay attention to the traffic conditions as you do so.
X
Check the tires and, if necessary, change the wheel
( Y page 280).
X
Check the tire pressures and, if necessary, set to the correct
tire pressure.
X
Restart the tire pressure loss warning system when the tire
pressure is correct (
A display message from the tire pressure loss warning system was
shown and the system has not been restarted since.
X
Set the correct tire pressure in all four tires.
X
Restart the tire pressure loss warning system (
The tire pressure loss warning system is faulty.
X
Visit a qualified specialist workshop.
The tire pressure monitor is measuring the tire pressure.
X
Drive on.
The tire pressures appear in the multifunction display after you
have been driving for a few minutes.
The TPMS is faulty.
X
Visit a qualified specialist workshop.
The wheels mounted do not have a suitable tire pressure sensor.
The tire pressure monitor is deactivated.
X
Mount wheels with suitable tire pressure sensors.
The TPMS is activated automatically after driving for a few
minutes.
Y page 269).
Y page 269).