Mercedes-Benz GLC Owner's Manual page 280

Important safety notes
G WARNING
Blind Spot Assist does not react to vehicles:
overtaken too closely on the side, placing
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them in the blind spot area
when the difference in the speed of
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approach and overtaking is too great
As a result, Blind Spot Assist cannot warn
drivers in these situations. There is a risk of an
accident.
Always pay careful attention to the traffic sit-
uation and maintain a safe distance at the side
of the vehicle.
Blind Spot Assist is only an aid. It may fail to
detect some vehicles and is no substitute for
attentive driving. Always ensure that there is
sufficient distance to the side for other road
users and obstacles.
Radar sensors
The radar sensors for Blind Spot Assist are
integrated into the rear bumper. Make sure
that the bumpers are free from dirt, ice or
slush. The sensors must not be covered, for
example by cycle racks or overhanging loads.
Following a severe impact or in the event of
damage to the bumpers, have the function of
the radar sensors checked at a qualified spe-
cialist workshop. Blind Spot Assist may no
longer work properly.
Monitoring range
In particular, the detection of obstacles can
be impaired in the case of:
dirt on the sensors or obscured sensors
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poor visibility, e.g. due to fog, heavy rain,
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snow or spray
narrow vehicles, e.g. motorcycles or bicy-
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cles
very wide lanes
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narrow lanes
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vehicles not driving in the middle of their
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lane
barriers or other road boundaries
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Vehicles in the monitoring range are then not
indicated.
Blind Spot Assist monitors the area up to
3.0 m behind your vehicle and directly next to
your vehicle, as shown in the diagram.
If the lanes are narrow, vehicles driving in the
lane beyond the lane next to your vehicle may
be indicated, especially if the vehicles are not
driving in the middle of their lane. This may be
the case if there are vehicles at the edge of
their lane nearest your vehicle.
Due to the nature of the system:
warnings may be issued in error when driv-
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ing close to crash barriers or similar solid
lane borders
warnings may be interrupted when driving
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alongside long vehicles, for example lor-
ries, for a prolonged time
Driving systems
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