·
P
ay attention to the limits of the sen-
sors and the system limits of the indi-
vidual systems.
·
Adapt your speed and distance from
the vehicles ahead to suit visibility,
weather, road and trac conditions.
·
Be prepared at all times to override or
cancel automatic interventions.
·
Observe the information on the instru-
ment cluster display and respond ac-
cording to the displays, if permitted by
the trac situation.
·
Do not use the driver assistance sys-
tems if you suspect there is a problem
or damage.
Limits of the sensors
Please refer to at the start of the
chapt
er on page 165.
Limits of the radar sensors
Driver assistance systems that use radar
sensors can react unexpectedly, with a de-
lay or not at all in the following situations:
— Driving in adverse weather conditions,
e.g. heavy rain, snow or heavy spray.
— Driving through road works, tunnels or
toll stations.
— Driving on twisting roads, e.g. mountain
roads.
— Ahead of crests and dips in the road.
— Driving oroad.
— Driving in multi-storey car parks.
— Driving on roads with embedded metal
objects, e.g. railway tracks.
— Driving on roads with loose chippings.
— In complex driving situations, e.g. at traf-
fic islands.
— If components in the area of the radar
sensors are exposed to external force,
e.g. aer a rear-end collision.
— The radar sensors are covered, dirty, mis-
aligned or damaged.
Limits of the camera behind the wind-
scr
een
Driver assistance systems that use the
camera behind the windscreen sensors can
react unexpectedly, with a delay or not at
all in the following situations:
— Ahead of crests and dips in the road.
— Driving through road works
— Driving oroad.
— Driving in adverse weather conditions,
e.g. heavy rain, snow, fog or heavy spray,
and on poor roads.
— When the sun is low in the sky, in dark-
ness or with glare from oncoming vehi-
cles.
— The camera is temporarily unavailable
due to prolonged exposure to direct sun-
light or high ambient temperatures.
— The camera window is covered, dirty or
damaged.
— The camera is misaligned.
Delayed response
If the sensor system is exposed to environ-
mental conditions that impair sensor func-
tioning, the driver assistance systems may
detect this only aer a certain delay. For
this reason, any restrictions to functions
may be displayed only aer a delay at the
start of the journey and when driving .
Limits in certain driving situations
Fig. 110 Driving through bends.
The sensor system always measures
straight ahead. In tight bends, vehicles may
therefore be incorrectly detected or vehi-
cles driving ahead not detected.
166 Driver assist systems