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Driving safety systems
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area clear at all times, including the area
under the brake pedal. Objects stored in
this area may impair pedal movement
which could interfere with the braking
ability of the PRE-SAFE
®
Brake.
Do not place your foot under the brake
pedal – your foot could become caught.
To maintain the proper distance to the vehicle
in front of you and thus prevent a rear-end
collision, you must apply the brakes yourself.
X
Brake the vehicle immediately to avoid a
collision.
Under no circumstances should the driver
await the intermittent warning sound
before braking. Observe the following
warning note.
The intermittent warning sound ceases and
the distance warning lamp l goes out
when the necessary distance to the vehicle
ahead is again established.
G
Warning!
An intermittent warning sounds and the
distance warning lamp l in the
instrument cluster is illuminated if PRE-
SAFE
®
Brake calculates that the distance
to the vehicle ahead and your vehicle’s
current speed indicate that PRE-SAFE
®
Brake will not be capable of slowing the
vehicle sufficiently to maintain the preset
following distance, which creates a danger
of a collision.
Immediately brake your vehicle to increase
the distance between your vehicle and the
vehicle driving in front of you. The warning
sound is intended as a final caution that you
have not interceded with your own braking
inputs to avoid a potentially dangerous
situation. Do not wait for the operation of
the warning signal to intercede with your
own braking, as that will result in potentially
dangerous emergency braking which will
not always result in an impact being
avoided.
Tailgating increases the risk of an accident.
PRE-SAFE
®
Brake can react to stationary
obstacles such as standing or parked vehicles
at road speeds of up to approximately 40 mph
(70 km/h).
G
Warning!
If you do not receive visual or acoustic
warning signals, PRE-SAFE
®
Brake has
either not recognized the collision risk, has
been deactivated or is malfunctioning.
Apply the brakes yourself to avoid a
collision.
X
Activating and deactivating: Activate or
deactivate PRE-SAFE
®
Brake using the
instrument cluster control system
(Y page 244).
After the function has been activated,
indicator : appears on the left-hand
side of the multifunction display.
PRE-SAFE
®
Brake does not always clearly
interpret complex traffic situations. If a visual
and/or acoustic warning is issued in an
uncritical driving situation, or if the vehicle
brakes lightly, you can interrupt the PRE-
SAFE
®
Brake maneuver by pressing down all
the way on the accelerator pedal, using
kickdown, or releasing the brake pedal.
The PRE-SAFE
®
Brake maneuver is
terminated immediately when
R
you avoid the obstacle by evasive steering
R
you drive less than 9 mph (15 km/h)
R
an obstacle can no longer be identified
ahead of you
R
the system no longer senses the risk of a
collision
Safety and security