G
WARNING
PRE-SAFE
®
Brake cannot always detect
complex traffic situations properly.
In these cases, PRE-SAFE(R) Brake may:
R
give an unnecessary warning and then
brake the vehicle
R
neither give a warning nor intervene
There is a risk of an accident. Always pay
particular attention to the traffic situation and
be ready to brake, especially if PRE-SAFE(R)
Brake warns you. Terminate the intervention
in a non-critical driving situation.
In particular, the detection of obstacles can
be impaired if there is:
R
dirt on the sensors or anything else
covering the sensors
R
snow or heavy rain
R
interference by other radar sources
R
the possibility of 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
G
WARNING
PRE-SAFE
®
Brake does not react:
R
to people or animals
R
to oncoming vehicles
R
to crossing traffic
R
in curves
As a result, PRE-SAFE
®
Brake cannot
intervene in critical situations. There is a risk
of an accident. Always pay careful attention
to the traffic situation and be ready to brake.
In order to maintain the appropriate distance
to the vehicle in front and thus prevent a
collision, you must apply the brakes yourself.
X
To activate/deactivate: activate or
deactivate PRE-SAFE
®
Brake in the on-
board computer (
Y
page 225).
The
Ä
symbol appears in the
multifunction display as long as the HOLD
function is not activated (
Y
page 187).
On vehicles with Parking Guidance, the
Ä
symbol is displayed when
transmission position
P is selected or if you
drive faster than 22 mph(35 km/h).
For PRE-SAFE
®
Brake to assist you when
driving, the radar sensor system must be
switched on (
Y
page 229) and operational.
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.
Theft deterrent locking systems
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.
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.
i
The immobilizer is always deactivated
when you start the engine.
In the event that the engine cannot be
started when the starter battery is fully
charged, the immobilizer may be faulty.
Contact an authorized Mercedes-Benz
Center or call 1-800-FOR-MERCedes (in
USA) or 1-800-387-0100 (in Canada).
Theft deterrent locking systems
71
Safety
Z
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