Mercedes-Benz E CLASS 2020 Operator's Manual page 156

154 Driving and parking
1
Event ahead
2 Distance to the event ahead
3 "Foot off the accelerator" prompt
The number of segments shown 2
depending on the distance to the event ahead:
A few segments: the event ahead is near.
R
Many segments: the event ahead is further
R
away.
When the vehicle nears the event, ECO Assist
will calculate the optimal speed for maximum
fuel economy and recuperative energy based on
the distance, speed and downhill gradient.
off the Accelerator message 3 appears in the
multifunction display. The first segments in front
of the vehicle will turn green. The remaining seg‐
ments will initially stay white. If the driver lifts
off the accelerator pedal in good time, the
remaining segments on the display will succes‐
sively turn green until the event shown is
reached. The drivetrain will be set for maximum
fuel economy. Recuperation will charge the bat‐
tery. Recuperation will be adapted to the selec‐
ted drive program.
The event will be shown for a short time after it
has been passed. If there is no response to the
Foot off the Accelerator
will remain white.
changes
If the event involves a vehicle in front, all seg‐
ments will immediately turn green once there is
a response to the Foot off the Accelerator
prompt.
For active ECO Assist in drive program ;,
symbol 3 will appear on the multifunction dis‐
play and on the head-up display beside transmis‐
sion position h. Symbol
when the assistant display is not selected.
Foot
If the system does not intervene during the
event ahead, nothing will be displayed. The sys‐
tem is passive.
ECO Assist is active only in drive programs ;
and A.
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.
prompt, the segments
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‐
3 will also appear R
mination of the road, highly variable shade
conditions, rain, snow, fog or heavy spray).