Mercedes-Benz S-Sedan 2015 Owners Manual - Manual (Page 64)

bolsters is reduced again. 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. Infor-
mation about the convenience function can
be found under "Belt adjustment"
(
Y
page 50).
PRE-SAFE ® PLUS (anticipatory occu-
pant protection system PLUS)
General information
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.
Important safety notes
The intervention of PRE-SAFE ® PLUS cannot
prevent an imminent collision.
The driver is not warned when PRE-SAFE
®
PLUS intervenes.
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
PRE-SAFE ® PLUS does not perform braking
actions while the vehicle is in motion or when
Parking Guidance is active.
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 meas-
ures 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 vehi-
cle is stationary.
- the seat belts are pre-tensioned.
The PRE-SAFE ® PLUS braking application is
canceled in the following situations:
R
if the accelerator pedal is depressed when
a gear is engaged
R if the risk of a collision passes or is no lon-
ger detected
R
if DISTRONIC PLUS indicates an intention
to pull away
If the hazardous situation passes without
resulting 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 activated
R the emergency lighting is activated
R
the vehicle doors are unlocked
R
the front side windows are lowered
R the electrically adjustable steering wheel is
raised
R the engine is switched off
62
Occupant safety
Safet
y