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For vehicles operated in Ukraine: also observe
the information on "Radio type approval for radar
sensor system" (
/
page 12).
The distance control assistant has been devel‐
oped for journeys on motorways and high-speed
major roads. The system is not intended for use
in urban traffic, for example.
The system may be impaired or may not function
in the following situations:
if there is low visibility, e.g. due to insufficient
R
road illumination or due to snow, rain, fog or
heavy spray
if there is glare, e.g. from oncoming traffic,
R
the sun or reflection from other vehicles (e.g.
if the road surface is wet)
if the windscreen in the area of the camera is
R
dirty, misted up or damaged
if the windscreen in the area of the camera is
R
obscured, e.g. due to a faulty windscreen
wiper or a sticker
if the carriageway is very narrow and winding
R
if the radar sensor is impaired due to interfer‐
R
ence from other radar sources, such as
strong radar reflections in car washes
The distance control assistant may not detect
narrow vehicles driving in front, e.g. motorcycles
or vehicles driving on a different line.
In particular, be aware of the following driving sit‐
uations:
cornering, entering and exiting bends
R
your own vehicle driving on a different line or
R
vehicles in front of you driving on a different
line
other vehicles changing lane
R
vehicles turning off
R
overtaking
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winding stretches of road
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obstacles and stationary vehicles
R
Regularly clean the distance sensor cover and the
windscreen in the camera's field of vision
(
page 318).
/
If the distance sensor cover or the windscreen in
the camera's field of vision is dirty or icy, its func‐
tionality may be impaired.
Deactivate distance control assistant before leav‐
ing the driver's seat and secure the vehicle using
the parking brake.
Do not use the distance control assistant in the
following situations:
on slippery roads. The drive wheels may lose
R
their grip when braking or accelerating and
the vehicle may skid.
when there is poor visibility, e.g. due to fog,
R
heavy rain or snow.
in cities and on country roads.
R
If the distance control assistant no longer detects
a vehicle driving in front because it has turned off
for example, the distance control assistant may
accelerate to the stored speed. On a filter lane or
a slip road, this speed may be too high.
PACC (Predictive Adaptive Cruise Control)
If the vehicle has PPC (Predictive Powertrain Con‐
trol) , this can be controlled to increase the dis‐
tance to the vehicle in front before lowering the
vehicle, for instance. This should assist with an
efficient and fuel-saving driving style.
The É symbol in the instrument cluster shows
the status of the distance control assistant by
colour:
grey symbol: the distance control assistant is
R
selected, but not activated.
white symbol: the distance control assistant
R
is activated, but a vehicle in front has not
been detected.
white symbol with a blue vehicle inside the
R
symbol: the distance control assistant is acti‐
vated and a vehicle in front has been detec‐
ted.
When a vehicle has been detected up ahead, the
on-board computer also displays its speed and
the distance to the detected vehicle.
%
The
Assistance
ë menu in the instrument
cluster also displays the speed of the detec‐
ted vehicle and the distance to the detected
vehicle.
Activating/deactivating the distance control
assistant
Functions and activation conditions
The distance control assistant controls the speed
and supports you in automatically maintaining
the distance from a vehicle detected in front. If
there is no vehicle in front, the distance control
assistant operates in the same way as cruise con‐
trol in the speed range between 15 km/h and
90 km/h.
Driving mode 239
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