Mercedes-Benz C-Sedan 2015 Owners Manual - Manual (Page 77)

At a speed of up to approximately 44 mph
(70 km/h), PRE-SAFE ® Brake can also detect:
R stationary objects in the path of your vehi-
cle, e.g. stopped or parked vehicles
R
pedestrians in the path of your vehicle
G WARNING
PRE-SAFE ® Brake does not react:
R to small people, e.g. children
R to animals
R to oncoming vehicles
R to crossing traffic
R when cornering
As a result, PRE-SAFE ® Brake may neither
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 the event of snowfall or heavy rain, the rec-
ognition can be impaired.
Recognition by the radar sensor system is
also impaired in the event of:
R
there is dirt on the sensors or anything else
covering the sensors
R there is interference by other radar sources
R there are strong radar reflections, for
example in parking garages
R
a narrow vehicle traveling in front, e.g. a
motorbike
R a vehicle traveling in front on a different line
relative to the center of your vehicle
Recognition by the camera system is also
impaired in the event of:
R dirt on the camera or if the camera is cov-
ered
R there is glare on the camera system, e.g.
from the sun being low in the sky
R darkness
R if:
- pedestrians move quickly, e.g. into the
path of the vehicle
- the camera system no longer recognizes
a pedestrian as a person due to special
clothing or other objects
- a pedestrian is concealed by other
objects
- the typical outline of a person is not dis-
tinguishable from the background
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 low speeds where there is no visible
damage to the front of the vehicle.
Following damage to the windshield, have the
configuration and operation of the camera
system checked at a qualified specialist work-
shop.
Function
X To activate/deactivate: activate or deac-
tivate PRE-SAFE
® Brake in the on-board
computer (
Y
page 245).
If the PRE-SAFE ® Brake is not activated, the
æ symbol appears in the multifunction
display.
Starting at a speed of around 4 mph (7 km/h),
this function warns you if you rapidly
approach a vehicle in front. An intermittent
warning tone will then sound and the ·
distance warning lamp will light up in the
instrument cluster.
X
Brake immediately to defuse the situation.
or
X Take evasive action provided it is safe to do
so.
If there is an increased risk of collision, pre-
ventive passenger protection measures (PRE-
SAFE ® ) are activated.
If the risk of collision with the vehicle in front
remains and you do not brake, take evasive
Driving safety systems
75
Safe
ty
Z