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System limits
Full system performance is not yet available for a
few seconds after switching on the vehicle or after
driving off.
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.
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 or vehicles move quickly into
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the sensor detection range.
If pedestrians are hidden by other objects.
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If the typical outline of a pedestrian cannot be
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distinguished from the background.
If a pedestrian is not detected as such, e.g.
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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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%
The Active Brake Assist sensors adjust auto-
matically while a certain distance is being
driven after the vehicle has been delivered.
Active Brake Assist is unavailable or only par-
tially available during the teach-in process.
▌Activating/deactivating Active Brake Assist
Requirements
The vehicle is switched on.
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Multimedia system:
©
Settings
Assistance
4
5
5
Active Brake Assist
5
Select the desired setting.
#
Deactivating Active Brake Assist
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It is recommended that you always leave
Active Brake Assist activated.
Driving and parking 213
Select Off.
#
The distance warning function, the autono-
mous braking function and Evasive Steering
Assist are deactivated.
The system is switched on again the next time
the vehicle is started.
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If Active Brake Assist is deactivated, the æ
symbol appears in the status bar of the Instru-
ment Display.
Traffic Sign Assist
▌Function of Traffic Sign Assist
Traffic Sign Assist detects traffic signs with the
multifunction camera (
page 187). It assists
/
you by displaying detected speed limits and over-
taking restrictions in the Instrument Display.
Observe the notes on driving systems and your
responsibility; you may otherwise fail to recognise
dangers (
page 187).
/
Since Traffic Sign Assist also uses the data stored
in the navigation system, it can update the display
in the following situations without detecting traffic
signs.
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