Anti-Theft Systems - Mercedes-Benz GLK 300 4MATIC 2012 Owner's Manual

In these cases, PRE-SAFE
give an unnecessary warning and then
R
brake the vehicle
neither give a warning nor intervene
R
There is a risk of an accident.
Always pay particular attention to the traffic
situation and be ready to brake, especially if
®
PRE-SAFE Brake warns you. Terminate the
intervention in a non-critical driving situation.
In particular, the detection of obstacles can
be impaired if there is:
dirt on the sensors or anything else cover-
R
ing the sensors
snow or heavy rain
R
interference by other radar sources
R
the possibility of strong radar reflections,
R
for example, in multi-storey car parks
a narrow vehicle travelling in front, e.g. a
R
motorcycle
a vehicle travelling in front on a different
R
line
G
WARNING
®
PRE-SAFE Brake does not react:
to people or animals
R
to oncoming vehicles
R
to crossing traffic
R
when cornering
R
As a result, PRE-SAFE
give warnings nor intervene in all critical sit-
uations. There is a risk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake.
In order to maintain the appropriate distance
to the vehicle in front and thus prevent a col-
lision, you must apply the brakes yourself.
To activate/deactivate: activate or deac-
X
®
tivate PRE-SAFE Brake in the on-board
computer ( page 237).
Y
®
When PRE-SAFE Brake is activated, the
Ä symbol appears in the multifunction
®
Brake may:
®
Brake may neither

Anti-theft systems

display, as long as the HOLD function is
deactivated ( page 186).
Y
On vehicles with Parking Guidance, the
Ä symbol is displayed when P is
engaged or you are driving faster than
35 km/h.
®
For PRE-SAFE Brake to assist you when driv-
ing, the radar sensor system must:
be switched on (
R
Y
be operational ( page 272)
R
Y
Vehicles with COMAND and a navigation sys-
tem: the radar sensor system is switched off
automatically in the vicinity of radio telescope
facilities ( page 375).
Y
Vehicles without COMAND and a navigation
system and vehicles for Australia: the radar
sensor system and on-board computer must
be switched off in the vicinity of radio tele-
scope facilities ( page 242).
Y
Following damage to the front end of the vehi-
cle, have the configuration and operation of
the radar sensors checked at a qualified spe-
cialist workshop. This also applies to colli-
sions at slow speeds where there is no visible
damage to the front of the vehicle.
Anti-theft systems
Immobiliser
The immobiliser prevents your vehicle from
being started without the correct key.
To activate with the key: remove the key
X
from the ignition lock.
To activate with KEYLESS-GO: switch the
X
ignition off and open the driver's door.
To deactivate: switch on the ignition.
X
i
The immobiliser is always deactivated
when you start the engine.
page 242)
Z
71