Mercedes-Benz GLC 200 4MATIC Owner's Manual page 272

The system may be impaired or may not function,
particularly in the following situations:
In snow, rain, fog, heavy spray, if there is glare,
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in direct sunlight or in greatly varying light
conditions.
If the sensors are dirty, misted up, damaged or
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covered. ( page 237)
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If the sensors are impaired due to interference
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from other radar sources, e.g. strong radar
reflections in multi-storey car parks.
If a loss of tyre pressure or a defective tyre
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has been detected and displayed.
In complex traffic situations where objects
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cannot always be clearly identified.
If pedestrians, cyclists or vehicles move
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quickly into the sensor detection range.
If road users are hidden by other objects or
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are located close to other objects.
If the typical outline of a pedestrian or cyclist
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cannot be distinguished from the background.
If a pedestrian or cyclist is not detected as
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such, e.g. due to special clothing or other
objects.
If the driver's seat belt is not fastened.
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On bends with a tight radius.
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▌Setting Active Brake Assist
Requirements:
The vehicle is switched on.
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Multimedia system:
© Settings Assistance
4 5 5
Collision avoidance
5
Activate or deactivate the function.
#
%
It is recommended that you always leave
Active Brake Assist activated.
When Active Brake Assist is deactivated, the dis-
tance warning function, the collision warning, the
autonomous braking function and Evasive Steer-
ing Assist are deactivated.
%
If Active Brake Assist is deactivated, the æ
symbol appears in the status bar of the driv-
er's display, and the system is reactivated the
next time the vehicle is started.
Setting the time of the brake application warnings
Select Z next to Active Brake
#
Select Early,
#
%
If ATTENTION ASSIST has detected indica-
tions of fatigue or a microsleep, the system
can issue a warning earlier than the set time
(country-dependent). Further information
about ATTENTION ASSIST (
Speed Limit Assist
▌Function of Speed Limit Assist
% Speed Limit Assist uses OpenStreetMap data,
which is made available under the conditions
of the Open Database License (OBbL). For
more information, see: https://
www.osmfoundation.org/wiki/licence.
Speed Limit Assist detects speed limits with multi-
function camera and displays them in the driver's
display and optionally in the head-up display. The
camera also detects speed limits with a restric-
tion indicated by an additional sign (e.g. when
wet).
Observe the notes on driving systems and your
responsibility; you may otherwise fail to recognise
dangers ( page 237).
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Assist.
Driving and parking 269
Medium or Late.
page 244).
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