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Safety and Security
Driving safety systems
PRE-SAFE
®
Brake* (vehicles with
DISTRONIC Plus* only)
PRE-SAFE
®
Brake* can assist you in mini-
mizing the risk of a rear-end collision with
a vehicle in front of you and in reducing the
severity of an accident. At speeds over ap-
proximately 20 mph (30 km/h), it will
ț warn you of a possible collision
ț automatically begin to brake the vehi-
cle lightly in a speed range of up to
112 mph (180 km/h)
ț activate preventative occupant safety
measures (PRE-SAFE
®
) (୴ page 56)
PRE-SAFE
®
Brake will only assist you by
automatically initiating braking if the driver
and front passenger have their seat belts
fastened.
Using the radar sensors, PRE-SAFE
®
Brake
detects obstacles that are in your driving
path for a sufficient period of time for the
system to recognize it. If you approach a
vehicle and PRE-SAFE
®
Brake has estab-
lished that the distance to the vehicle
ahead at your current speed is so close
that PRE-SAFE
®
Brake will not be capable
of slowing the vehicle sufficiently, the sys-
tem will initially warn you visually and
acoustically.
When travelling in Canada in a vehicle not
registered in Canada, you must switch off
the radar sensor system* (
୴ page 272).
Canadian law does not permit the use of
the radar sensor system* (
୴ page 272) for
vehicles from outside of Canada. When you
switch off the radar sensor system*, the
following functions are deactivated:
ț BAS Plus* (୴ page 67)
ț DISTRONIC Plus* (୴ page 411)
ț Park Assist* (୴ page 435)
ț PRE-SAFE
®
Brake
Warning! G
PRE-SAFE
®
Brake is a convenience system
designed to assist the driver during vehicle
operation. The responsibility for the vehicle
speed and the distance to the vehicle ahead,
including most importantly brake operation
to assure safe stopping distance, always re-
mains with the driver.
Always pay attention to traffic conditions
even while PRE-SAFE
®
Brake is switched on.
Otherwise, you may not be able to recognize
dangerous situations until it is too late and
could cause an accident resulting in person-
al or fatal injury to you or others.
i
USA only:
This device has been approved by the FCC as a
“Vehicular Radar System”. The radar sensor is
intended for use in an automotive radar system
only. Removal, tampering, or altering of the de-
vice will void any warranties, and is not permitted
by the FCC. Do not tamper with, alter, or use in
any non-approved way.
Any unauthorized modification to this device
could void the user’s authority to operate the
equipment.