PRE-SAFE
®
takes the following measures
depending on the hazardous situation detected:
R
the front seat belts are pre-tensioned.
R
if the vehicle skids, the side windows and the
panorama roof with power tilt/sliding panel
are closed.
R
vehicles with the memory function for the
front-passenger seat: the front-passenger
seat is adjusted if it is in an unfavorable posi-
tion.
If the hazardous situation passes without result-
ing 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. Informa-
tion about the convenience function can be
found under "Belt adjustment" (
Y
page 48).
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 hazardous sit-
uations, PRE-SAFE
®
PLUS takes pre-emptive
measures to protect the vehicle occupants.
Important safety notes
The intervention of PRE-SAFE
®
PLUS cannot
prevent an imminent collision.
The driver is not warned about the intervention
of PRE-SAFE
®
PLUS.
PRE-SAFE
®
PLUS does not intervene:
R
if the vehicle is backing up
R
when the vehicle is towing a trailer and there
is a risk of a rear-end collision
When driving, or when parking or exiting a park-
ing space with assistance from Parking Pilot,
PRE-SAFE
®
PLUS will not apply the brakes.
Function
PRE-SAFE
®
PLUS intervenes in certain situa-
tions if the radar sensor system detects an
imminent head-on or rear-end collision.
PRE-SAFE
®
PLUS takes the following measures
depending on the hazardous situation detected:
R
if the radar sensor system detects that a
head-on collision is imminent, the seat belts
are pre-tensioned.
R
if the radar sensor system detects that a rear-
end collision is imminent:
-
the brake pressure is increased if the driver
applies the brakes when the vehicle is sta-
tionary.
-
the seat belts are pre-tensioned.
The PRE-SAFE
®
PLUS braking application is can-
celed:
R
if the accelerator pedal is depressed when a
gear is engaged
R
if the risk of a collision passes or is no longer
detected
R
if Distance Pilot DISTRONIC indicates an
intention to pull away
If the hazardous situation passes without result-
ing in an accident, the original settings are
restored.
Automatic measures after an acci-
dent
Immediately after an accident, the following
measures are implemented, depending on the
type and severity of the impact:
R
the hazard warning lamps are switched on
R
the emergency lighting is activated
R
the vehicle doors are unlocked
R
the front side windows are lowered
R
vehicles with a memory function: the electri-
cally adjustable steering wheel is raised when
the driver's door is opened
R
the engine is switched off and the fuel supply
is cut off
R
vehicles with mbrace: automatic emergency
call
Occupant safety
59
Safety
Z
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