Mercedes-Benz 2010 GLK-Class Operator's Manual page 280

Vehicle status messages in the multifunction display
278
Display messages
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Possible causes/consequences and M Solutions
Key Not
The SmartKey with KEYLESS-GO is not detected while the
Detected
engine is running because the SmartKey is not in the vehicle.
(message
X
Stop the vehicle as soon as it is safe to do so.
appears in
X
Engage the parking brake.
red)
X
Search for the SmartKey.
The vehicle cannot be locked centrally nor can the engine
be started again after the engine is stopped.
Key Not The SmartKey with KEYLESS-GO is not detected while the
Detected engine is running because there is strong radio-frequency
(message interference.
appears in
X
Stop the vehicle as soon as it is safe to do so.
red)
X
Engage the parking brake.
X
Remove the KEYLESS-GO button from the starter switch
( Y page 77).
X
Operate the vehicle with the SmartKey in the starter switch.
Key Not The SmartKey with KEYLESS-GO is momentarily not detected.
Detected
X
Change the position of the SmartKey in the vehicle.
(message
X
If necessary, remove the KEYLESS-GO button from the
appears in
starter switch (
white)
Remove
The KEYLESS-GO system is malfunctioning.
'Start'
X
Remove the KEYLESS-GO button from the starter switch
Button
( Y page 77).
and
X
Operate the vehicle with the SmartKey in the starter switch.
Insert Key
Check
The water level has dropped to approximately 1.1 US qts
Washer
(1.0 l).
Fluid
X
Add washer fluid (
Y page 77).
Y page 217).