Limits of Front Assist
Please refer to at the start of the chap-
Front Assist is not available or its
functions are restricted immediately
after the vehicle is started. The indi-
cator lamp lights up in the instrument
cluster display during this time.
Front Assist has physical and system-related
limitations. You should therefore always be
prepared to take full control of the vehicle if
necessary.
Delayed response
If the camera or radar sensor is exposed to
environmental conditions that impair func-
tioning, the system may detect this only after
a certain delay. For this reason, any restric-
tions to functions may be displayed only after
a delay at the start of the journey and when
Objects that cannot be detected
Front Assist may not react or may react with
a delay or provide with an unwanted re-
sponse in the following situations:
— Vehicles that are driving outside the sen-
sor range in close proximity to your vehi-
cle, e.g. vehicles that are driving offset to
your vehicle or motorbikes.
— Vehicles that change into your lane direct-
ly in front of your vehicle.
— Vehicles with bodies or attachments that
project beyond the vehicle.
— Oncoming vehicles or vehicles crossing
your path.
— Oncoming pedestrians.
— Oncoming cyclists.
— When pedestrians and cyclists are not de-
tected, for example because they are par-
tially or fully hidden.
— Objects or narrow objects such as walls,
rails, fences, posts, trees or garage doors.
Function limitations
Front Assist may not react or may react with
a delay or provide with an unwanted re-
sponse in the following situations:
— In tight bends.
— Driving in heavy rain, snow, fog or heavy
spray.
— Driving in multi-storey car parks and tun-
nels.
— Driving on roads with embedded metal
objects, e.g. railway tracks.
— Reversing.
— If ESC is regulating or faulty.
— If the radar sensor or camera window is
dirty, covered or damaged.
— If several brake lights on the vehicle are
faulty.
— If there is a fault in several brake lights on
a trailer or bicycle carrier with an electrical
connection to the vehicle.
— If the vehicle accelerates hard or the ac-
celerator is fully depressed.
— In complex driving situations, e.g. at traffic
islands.
— In unclear traffic situations, e.g. vehicles
ahead are braking heavily or turning off.
— When the sun is low in the sky, in darkness
or with glare from oncoming vehicles.
— When driving into and out of tunnels.
— If there is a fault in Front Assist.
Switching off Front Assist
Front Assist is not suitable for use in the fol-
lowing situations due to the limitations of the
system and must be switched off → :
— If the vehicle is utilised in a capacity be-
yond usage on public roads, e.g. off-road
or on a race track.
— If the vehicle is being towed or is loaded
onto another vehicle.
— If add-on parts cover the radar sensor or
camera.
— If the camera or the radar sensor is faulty.
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Driver assist systems
