Key functions, Changing the settings of the locking system, Emergency key element – Mercedes-Benz 2012 A Class User Manual
Page 77: Opening and closing
Key functions
:
& To lock the vehicle
;
% To unlock the vehicle
X
To unlock centrally: press button ;.
If you do not open the vehicle within approx-
imately 40 seconds of unlocking:
R
the vehicle is locked again.
R
the anti-theft system is primed again.
X
To lock centrally: press button :.
The key centrally locks/unlocks:
R
the doors
R
the tailgate
R
the fuel filler flap
When unlocking, the turn signals flash once.
When locking, they flash three times.
i
When it is dark, the surround lighting also
comes on if it is activated in the on-board
computer (
Y
page 222).
i
You can also set an audible signal to con-
firm that the vehicle has been locked. The
audible signal can be activated and deacti-
vated using the on-board computer
(
Y
page 223).
Changing the settings of the locking
system
You can change the settings of the locking
system. This means that only the driver's door
and the fuel filler flap are unlocked when the
vehicle is unlocked. This is useful if you fre-
quently travel on your own.
X
To change the setting: press and hold
down the % and & buttons simulta-
neously for approximately six seconds until
battery check lamp (
Y
page 76) flashes
twice.
i
If the setting of the locking system is
changed within the signal range of the vehi-
cle, pressing the & or % button:
R
locks or
R
unlocks the vehicle
The key now functions as follows:
X
To unlock the driver's door: press the
% button once.
X
To unlock centrally: press the % but-
ton twice.
X
To lock centrally: press the & button.
X
To restore the factory settings: press
and hold down the % and & buttons
simultaneously for approximately six sec-
onds until the battery check lamp flashes
twice (
Y
page 76).
Emergency key element
General notes
If the vehicle can no longer be unlocked with
the key, use the emergency key element.
If you use the emergency key element to
unlock and open the driver's door, the anti-
theft alarm system will be triggered
(
Y
page 69).
There are several ways to turn off the alarm:
X
Press the % or & button on the key.
or
X
Insert the key into the ignition lock.
Key
75
Opening and closing
Z