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206 Driver assistance systems
WARNING
If the Front Assist is not switched off in the aforementioned situations,
accidents and serious injuries may be caused.
● Switch off the Front Assist in critical situations.
System limitations
The Front Assist Monitoring System has certain physical limitations inherent
in the system. Thus, for example, in certain circumstances some system re-
actions may be inappropriate or occur with delays as far as the driver is con-
cerned. Therefore, be on the lookout in case you have to intervene.
The following conditions may lead the Front Assist Monitoring System not
to react or react too late:
● When taking tight bends.
● If you step on the accelerator too hard
● If the Front Assist is switched off or damaged.
● If the ASR has been manually disconnected.
● If the ESC is controlling.
● If several brake lights on the vehicle or trailer have electrical faults.
● If the radar sensor is dirty or covered.
● If there are metal objects, e.g., rails on the road or the panels used on
work sites.
● If the vehicle is reversing.
● If the vehicle over-accelerates.
● In snow or heavy rain.
● In the case of narrow vehicles such as motorbikes.
● In the case of vehicles not driving straight.
● In the case of vehicles changing lanes.
● In the case of vehicles approaching each other in the opposite direction.
● Loads and special accessories in other vehicles jutting out over the
sides, front or rear.
City emergency braking function
Fig. 140 On the instru-
ment panel display: pre-
warning message
The City emergency braking function is part of the Front Assist Monitoring
System and is always active when this system is on.
Depending on the equipment, the City emergency braking function can be
switched on or off on the Easy Connect system using the button
and the
function buttons
and
Driver Assist
⇒ page 80.
The City emergency braking function detects, at speeds between 5 km/h
(3 mph) and 30 km/h (19 mph) approx., the situation of the traffic in front
of the vehicle up to a distance of approx. 10 m.
If the system detects a possible collision with a vehicle in front, the vehicle
prepares for a possible emergency braking ⇒
.
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