Mercedes-Benz GLC : Doors / Locking/unlocking the driver's door with the emergency key
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. Then proceed to lock the driver's
door using the emergency key.

Remove the emergency key.
Insert the emergency key as far
as it will go
into opening
in the cover.
Pull and hold the door handle.
Pull the cover on the emergency
key as
straight as possible away from the vehicle
until it releases.
Release the door handle.

To unlock: turn the
emergency key counterclockwise
to position
.
To lock: turn the
emergency key clockwise to
position
.
Carefully press the cover onto
the lock cylinder
until it engages and is seated firmly.
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...
Other information:
Installing a LATCH-type (ISOFIX) child restraint system on the rear seat
WARNING Risk of accident if the rear
bench seat, rear seat and seat backrest
are not engaged
The rear bench seat, rear seat and seat backrest
may fold forwards, even when you are
driving...
Plug-in hybrid: be sure to observe the notes in
the Supplement. You could otherwise fail to recognize
dangers.
NOTE Damage from automatic braking
If one of the following functions is switched
on, the vehicle brakes automatically in certain
situations:
Active Brake Assist
Active Distance Assist DISTRONIC
HOLD function
Active Parking Assist
To avoid damage to the vehicle, deactivate
these systems in the following or similar situations:
During towing
In a car wash
Mercedes-Benz recommends transporting your
vehicle in the case of a breakdown, rather than
towing it away...