Mercedes-Benz B-Class hatchback 2022 Owner's Manual page 274

Obstacles above the detection range, e.g.
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overhanging loads, overhangs or loading
ramps of lorries.
The sensors must be free of dirt, ice and slush.
Otherwise, they may not function correctly. Clean
the sensors regularly, taking care not to scratch
or damage them ( page 229).
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Vehicles with trailer hitch: Parking Assist
PARKTRONIC is deactivated for the rear zone
when you establish an electrical connection
between your vehicle and a trailer.
Problems with Parking Assist PARKTRONIC
Example: vehicles with 360° Camera
When rear segments 1 or all-round segments
2 light up red and the é symbol appears in
the Instrument Display, Parking Assist
PARKTRONIC may have been deactivated due to
signal interference. Start the vehicle again and
check if Parking Assist PARKTRONIC is working at
a different location.
If a warning tone also sounds for approximately
two seconds every time the vehicle is started, it
may be due to one of the following causes:
The sensors are dirty: clean the sensors and
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observe the notes on care of vehicle parts
( page 356).
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Parking Assist PARKTRONIC has been deacti-
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vated due to a malfunction: restart the vehi-
cle. If the problem persists, consult a qualified
specialist workshop.
Function of the passive side impact protection
Passive side impact protection is an additional
Parking Assist PARKTRONIC function which warns
the driver about obstacles at the side of the vehi-
cle. A warning is issued when obstacles are
detected between the front and rear detection
range. In order for an object on the side to be
Driving and parking 271
detected, the sensors in the front and rear
bumper must first detect the object while you are
driving past it.
During the parking procedure or manoeuvring,
objects are detected as the vehicle drives past. If
you steer in the direction of a detected obstacle
and there is a risk of a lateral collision, a warning
is issued and the segments light up in colour in
the display.
The segment colour changes depending on the
distance to the detected obstacle:
Yellow: approximately 30 - 60 cm
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Red: less than approximately 30 cm
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In order for lateral, front or rear segments to be
displayed, the vehicle must first travel a distance
of at least half a vehicle's length. Once the vehicle
has travelled the length of the vehicle, all of the
lateral front and rear segments can be displayed.