Mercedes-Benz C-Sedan 2015 Owners Manual - Manual (Page 60)

How the air bag system works is deter-
mined by the severity of the accident detec-
ted, especially the vehicle deceleration or
acceleration and the apparent type of acci-
dent:
R frontal collision
R side impact
R
rollover
PRE-SAFE ® (anticipatory occupant
protection system)
Introduction
PRE-SAFE ® takes preemptive measures to
protect occupants in certain hazardous sit-
uations.
Important safety notes
!
Make sure that there are no objects in the
footwell under or behind the seats when
moving the seats back. There is a risk that
the seats and/or the objects could be dam-
aged.
Despite your vehicle being equipped with the
PRE-SAFE ® system, the possibility of per-
sonal injuries occurring as a result of an acci-
dent cannot be eliminated. Always adapt your
driving style to suit the prevailing road and
weather conditions and maintain a safe dis-
tance from the vehicle in front. Drive care-
fully.
Function
PRE-SAFE ® intervenes:
R in emergency braking situations, e.g. when
BAS is activated.
R
in critical driving situations, e.g. when phys-
ical limits are exceeded and the vehicle
understeers or oversteers severely.
R vehicles with the Driving Assistance pack-
age: when a driver assistance system inter-
venes powerfully or the radar sensor sys-
tem detects an imminent danger of colli-
sion in certain situations.
PRE-SAFE ® takes the following measures
depending on the hazardous situation detec-
ted:
R the front seat belts are pre-tensioned.
R if the vehicle skids, the sliding sunroof and
the side windows are closed so that only a
small gap remains. The panorama roof with
power tilt/sliding panel is completely
closed.
R vehicles with the memory function for the
front-passenger seat: the front-passenger
seat is adjusted if it is in an unfavorable
position.
If the hazardous situation passes without
resulting in an accident, PRE-SAFE ® slackens
the belt pre-tensioning. All settings made by
PRE-SAFE ® can then be reversed.
If the seat belt pre-tensioning is not reduced:
X Move the seat backrest or seat back
slightly when the vehicle is stationary.
The seat belt pre-tensioning is reduced and
the locking mechanism is released.
The seat-belt adjustment is an integral part of
the PRE-SAFE ® convenience function. You
will find information on the convenience func-
tion under "Belt adjustment" (
Y
page 47).
PRE-SAFE ® PLUS (anticipatory occu-
pant protection system PLUS)
Introduction
PRE-SAFE ® PLUS is only available in vehicles
with the Driving Assistance package.
Using the radar sensor system, PRE-SAFE
®
PLUS is able to detect that a head-on or rear-
end collision is imminent. In certain hazard-
ous situations, PRE-SAFE ® PLUS takes pre-
emptive measures to protect the vehicle
occupants.
58
Occupant safety
Safe
ty