Mercedes-Benz 2011 GLK-Class Operator's Manual page 68

Anti-theft systems
66
X
To arm: lock the vehicle with the SmartKey
or KEYLESS-GO.
Indicator lamp : flashes. The alarm
system is armed after approximately 15
seconds.
X
To deactivate: unlock the vehicle using the
SmartKey or KEYLESS-GO.
X
To stop the alarm using the SmartKey:
insert the SmartKey into the ignition lock.
The alarm is switched off.
or
X
Press the % or & button on the
SmartKey.
The alarm is switched off.
X
To stop the alarm using KEYLESS-GO:
grasp the outside door handle. The key
must be outside the vehicle.
The alarm is switched off.
or
X
Press the Start/Stop button on the
dashboard. The key must be inside the
vehicle.
The alarm is switched off.