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Safety and Security
Driving safety systems
PRE-SAFE
®
Brake can react to stationary
obstacles such as standing or parked vehi-
cles at road speeds of up to approximately
40 mph (70 km/h).
̈ Activating and deactivating: Activate
or deactivate PRE-SAFE
®
Brake using
the instrument cluster control system
(
୴ page 268).
After the function has been activated,
indicator : appears on the
left-hand side of the multifunction dis-
play.
PRE-SAFE
®
Brake does not always clearly
interpret complex traffic situations. If a vi-
sual and/or acoustic warning is issued in
an uncritical driving situation, or if the ve-
hicle brakes lightly, you can interrupt the
PRE-SAFE
®
Brake maneuver by
ț pressing down all the way on the accel-
erator or using kickdown
ț releasing the brake pedal
The PRE-SAFE
®
Brake maneuver is termi-
nated immediately when
ț you avoid the obstacle by evasive
steering
ț you drive less than 9 mph (15 km/h)
ț an obstacle can no longer be identified
ahead of you
ț the system no longer senses the risk of
a collision
After a hard collision or damage to the
front of the vehicle from an accident, have
the settings and operation of the radar
sensors checked by an authorized
Mercedes-Benz Center.
Warning! G
If you do not receive visual or acoustic warn-
ing signals, PRE-SAFE
®
Brake has either not
recognized the collision risk, has been deac-
tivated or is malfunctioning. Apply the
brakes yourself to avoid a collision.
i
PRE-SAFE
®
Brake will remain passive while
DISTRONIC Plus* is switched on (୴ page 411).