Mercedes-Benz A 220 4MATIC 2021, Operator'S Manual

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PRE-SAFE
®
system
PRE-SAFE
®
(anticipatory occupant protec‐
tion)
PRE-SAFE
®
is able to detect certain critical driv‐
ing situations and implement pre-emptive meas‐
ures to protect the vehicle occupants.
PRE-SAFE
®
can implement the following meas‐
ures independently of each other:
R
Tightening the seat belts on the driver's seat
and front passenger seat.
R
Closing the side windows.
R
Vehicles with sliding sunroof: Close the
sliding sunroof.
R
Vehicles with memory function: Move the
front passenger seat to a more favorable
seat position.
R
PRE-SAFE
®
Sound: provided that the multi‐
media system is switched on, generates a
brief noise signal to stimulate the innate pro‐
tective mechanism of a person's hearing.
* NOTE Damage caused by objects in the
footwell or behind the seat
The automatic adjustment of the seat posi‐
tion may result in damage to the seat and/or
the object.
#
Stow objects in a suitable place.
Reversing the PRE-SAFE
®
system measures
If an accident did not occur, the pre-emptive
measures that were taken are reversed.
You will need to perform certain settings your‐
self.
#
If the seat belt pre-tensioning is not reduced,
move the seat backrest back slightly.
The locking mechanism releases.
Function of PRE-SAFE
®
PLUS (anticipatory
occupant protection plus)
PRE-SAFE
®
PLUS can detect certain impacts,
particularly an imminent rear impact, and take
pre-emptive measures to protect the vehicle
occupants. These measures cannot necessarily
prevent an imminent impact.
PRE-SAFE
® PLUS can implement the following
measures independently of each other:
R
Tightening the seat belts on the driver's seat
and front passenger seat.
R
Increasing brake pressure when the vehicle
is stationary. This brake application is can‐
celed automatically when the vehicle pulls
away.
If an accident did not occur, the pre-emptive
measures that were taken are reversed.
System limits
The system will not initiate any action in the fol‐
lowing situations:
R
When backing up
The system will not initiate any braking applica‐
tion in the following situations:
R
Whilst driving
or
50 Occupant safety