Mercedes-Benz GLC : Doors / Activating/deactivating the automatic locking feature
The vehicle is locked automatically when the
ignition is switched on and the wheels are turning
faster than walking pace.

To activate: press and
hold button
for
approximately five seconds until an acoustic
signal sounds.
To deactivate: press and
hold button
for
approximately five seconds until an acoustic
signal sounds.
In the following situations, there is a danger of
being locked out when the function is activated:
- While the vehicle is being tow started/
pushed.
- If the vehicle is being tested on a roller dynamometer.
You can no longer lock or unlock the vehicle
using KEYLESS-GO
Possible causes:
The SmartKey functions have been deactivated.
The SmartKey battery is weak or discharged...
If you wish to lock the vehicle entirely using
the emergency key, first press the button for
locking from the inside while the driver's
door is open...
Other information:
The diagnostics connection is a technical interface
in the vehicle. It is used, for example, within
the scope of repair and maintenance work or for
reading out vehicle data by a specialist workshop.
Diagnostic devices should therefore only
be connected by a qualified specialist workshop...
DANGER Risk of fatal injury due to damaged
connecting cables or sockets
You could receive an electric shock if the
connecting cable or the 115 V power socket
is pulled out of the trim or is damaged or
wet.
Use only connecting
cables that are dry
and free of damage...