Anti-Theft Systems; Immobilizer - Mercedes-Benz 2011 E-Class Sedan Operator's Manual

motorcycles and vehicles driving offset from
your vehicle center.
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Warning
Depending on the vehicle speed, PRE-SAFE
Brake brakes your vehicle with a maximum of
2 2
13 ft/s (4 m/s ) before a possible hard stop.
This corresponds to about 40 % of the
maximum deceleration ability of your vehicle.
The driver must apply the brakes additionally
in order to prevent a collision. The self-acting
hard stop will be initiated when the imminent
danger of a collision exists, e.g. when an
evasive maneuver cannot avoid an accident.
In order to maintain the appropriate distance
to the vehicle in front and thus prevent a
collision, you must apply the brakes yourself.
At speeds up to approximately
40 mph (70 km/h), PRE-SAFE
also detect stationary obstacles, for example
stopped or parked vehicles.
G
Warning!
If you do not receive visual or acoustic
warning signals, the PRE-SAFE
not have recognized the collision risk
R
have been deactivated
R
be malfunctioning
R
Apply the brakes yourself to avoid a collision.
X
To activate: activate PRE-SAFE
the on-board computer (
The Ä symbol appears in the lower
multifunction display, as long as the HOLD
function is not activated (
On vehicles with parking guidance, the P
gear must be engaged for the icon to be
displayed.
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For PRE-SAFE Brake to assist you when
driving, the radar sensor system must be
switched on and operational.
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Brake can
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Brake may
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Brake in
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Anti-theft systems

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PRE-SAFE Brake does not always detect
complex traffic situations properly. You can
terminate the braking action of PRE-SAFE
Brake in a non-critical driving situation at any
time if:
an acoustic and visual warning occurs
R
the vehicle brakes
R
To end this, you can either depress the
accelerator pedal further, activate kickdown
or release the brake pedal.
The braking action of PRE-SAFE
ended automatically if:
you maneuver to avoid the obstacle
R
you drive slower than approximately
R
9 mph (15 km/h)
there is no longer an obstacle detected in
R
front of your vehicle
there is no longer any danger of a collision
R
Following a collision or accident-related
damage to the front end of the vehicle, have
the configuration and operation of the radar
sensors checked. Choose a qualified
specialist workshop for this which has the
necessary specialist knowledge and tools for
the work required. Mercedes-Benz
recommends that you use an authorized
Mercedes-Benz Center for this purpose.
Anti-theft systems

Immobilizer

The immobilizer prevents your vehicle from
being started without the correct key.
When leaving the vehicle, always take the
SmartKey with you and lock the vehicle. The
engine can be started by anyone with a valid
key that is left inside the vehicle.
X
To activate with the SmartKey: remove
the SmartKey from the ignition lock.
X
To activate with KEYLESS-GO: switch the
ignition off and open the driver's door.
X
To deactivate: switch on the ignition.
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Brake is
Z