Mercedes-Benz GLK Operator's Manual page 236

Features
234
read the operating instructions for the garage
door system.
X
Turn the SmartKey to position 2 in the
ignition lock.
X
Press transmitter button ;, = or ? in the
overhead control panel that you have
programmed to operate the garage door.
Garage door system with fixed code:
indicator lamp : lights up continuously.
Garage door system with rolling code:
indicator lamp : flashes briefly and then
lights up for approximately two seconds.
This is repeated for up to 20 seconds.
i
The transmitter will transmit a signal for
as long as the transmitter button is being
pressed. The transmission will be halted
after a maximum of 20 seconds and
indicator lamp : will flash. Press the
transmitter button again, if necessary.
Clearing the memory of the integrated
garage door opener on the rear-view
mirror
X
Turn the SmartKey to position 2 in the
ignition lock.
X
Press and hold transmitter buttons ;
and ? for approximately 20 seconds until
indicator lamp : flashes rapidly.
The memory is cleared.
i You should clear the remote control
memory before selling the vehicle.
I n f o r ma t i o n P r o v i d e d b y :