In the event of snowfall or heavy rain, the
recognition can be impaired.
Recognition by the radar sensor system is
also impaired in the event of:
R
dirt on the sensors or anything else
covering the sensors
R
interference by other radar sources
R
there are strong radar reflections, for
example in parking garages
R
a narrow vehicle traveling in front, e.g. a
motorbike
R
a vehicle traveling in front on a different line
relative to the center of your vehicle
Following damage to the front end of the
vehicle, have the configuration and operation
of the radar sensors checked at a qualified
specialist workshop. This also applies to
collisions at low speeds where there is no
visible damage to the front of the vehicle.
Function
X
To activate/deactivate: activate or
deactivate PRE-SAFE
®
Brake in the on-
board computer (
Y
page 229).
If the PRE-SAFE
®
Brake is not activated, the
æ
symbol appears in the multifunction
display.
Starting at a speed of around 4 mph
(7 km/h), this function warns you if you
rapidly approach a vehicle in front. An
intermittent warning tone will then sound and
the
·
distance warning lamp will light up
in the instrument cluster.
X
Brake immediately to defuse the situation.
or
X
Take evasive action provided it is safe to do
so.
PRE-SAFE
®
Brake can also brake the vehicle
automatically under the following conditions:
R
the driver and front-passenger have their
seat belts fastened
and
R
the vehicle speed is between
approximately 4 mph (7 km/h) and
124 mph (200 km/h)
At speeds of up to approximately 40 mph
(70 km/h) PRE-SAFE
®
Brake can also detect
stationary objects. Examples of stationary
objects are stopped or parked vehicles.
i
If there is an increased risk of collision,
preventive passenger protection measures
(PRE-SAFE
®
) are activated.
If the risk of collision with the vehicle in front
remains and you do not brake, take evasive
action or accelerate significantly, the vehicle
may perform automatic emergency braking,
up to the point of full brake application.
Automatic emergency braking is not
performed until immediately prior to an
imminent accident.
You can prevent the intervention of the PRE-
SAFE
®
Brake at any time by:
R
depressing the accelerator pedal further.
R
activating kickdown.
R
releasing the brake pedal.
The braking action of PRE-SAFE
®
Brake is
ended automatically if:
R
you maneuver to avoid the obstacle.
R
there is no longer any danger of a rear-end
collision.
R
there is no longer an obstacle detected in
front of your vehicle.
Theft deterrent locking system
Immobilizer
The immobilizer prevents your vehicle from
being started without the correct SmartKey.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. The
engine can be started by anyone with a valid
SmartKey that is left inside the vehicle.
Theft deterrent locking system
73
Safety
Z
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