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162 Driving and parking
The segments of distance display
distance to the event ahead as follows:
A few segments light up: the event ahead is
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near.
Many segments light up: the event ahead is
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further away.
When the vehicle nears an event, ECO Assist will
calculate the optimal speed for maximum fuel
economy and recuperative energy based on the
distance, speed and gradient. The "Foot off the
accelerator" symbol
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will appear on the multi‐
function display.
If you take your foot off the accelerator pedal in
good time, the remaining segments on the dis‐
play will successively turn green until the event
shown is reached. The drivetrain will be set for
maximum fuel economy. In drive program =
with the drive setting "Reduced" or "Moderate",
the vehicle will coast, with the combustion
engine switched off if necessary.
If there is no response to the prompt, the seg‐
ments will remain white.
2
show the
The event will be shown for a short time after it
has been passed.
If the event involves a vehicle in front and when
the coast-down recommendation is given, all
segments will immediately turn green once there
is a response to the "Foot off the accelerator"
prompt 3.
If the system does not intervene during the
event ahead, nothing will be displayed. The sys‐
tem will be passive.
In drive program A, only the event "Vehicle in
front" is displayed.
System limits
ECO Assist can function even more precisely if
the route is adhered to when route guidance is
active. The basic function is also available with‐
out active route guidance. Not all information
and traffic situations can be foreseen. The qual‐
ity depends on the map data.
ECO Assist is only an aid. The driver is responsi‐
ble for keeping a safe distance from the vehicle
in front, for vehicle speed and for braking in
good time. The driver must be ready to brake at
all times irrespective of whether the system
intervenes.
The system may be impaired or may not function
in the following situations:
If visibility is poor, e.g. due to insufficient illu‐
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mination of the road, highly variable shade
conditions, rain, snow, fog or heavy spray.
If there is glare, e.g. from oncoming traffic,
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direct sunlight or reflections.
If there is dirt on the windscreen in the area
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of the multifunction camera or the camera is
misted up, damaged or obscured.
If road signs are hard to detect, e.g. due to
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dirt, snow or insufficient lighting, or because
they are obscured.
If the information on the navigation system's
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digital map is incorrect or out of date.
If signs are ambiguous, e.g. road signs in
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roadworks or in adjacent lanes.
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