Mercedes-Benz S-Class 2022 Owner's Manual page 224

The following route events can be detected by
ECO Assist:
3
Roundabout
4
S-bend
5
Sharp bend
6 T-junction
7
Downhill gradient
8
Vehicle in front
9
Speed limit
% In drive program A, ECO Assist only reacts
to route event 8 "Vehicle in front."
System limits
If the calculated route is adhered to when route
guidance is active, ECO Assist will operate with
greater accuracy. The basic function is also availa-
ble without active route guidance. Not all informa-
tion and traffic situations can be foreseen. The
quality depends on the map data.
ECO Assist is only an aid. The driver is responsible
for keeping a safe distance from the vehicle in
front, for vehicle speed and for braking in good
time.
The system may be impaired or may not function
in the following situations:
If visibility is poor, e.g. due to insufficient illu-
R
mination of the road, highly variable shade
conditions, rain, snow, fog or heavy spray.
If there is glare, e.g. from oncoming traffic,
R
direct sunlight or reflections.
If there is dirt on the windscreen in the vicinity
R
of the multifunction camera or if the camera is
misted up, damaged or obscured.
If the traffic signs are hard to detect, e.g. due
R
to dirt, snow or insufficient lighting, or
because they are covered.
Driving and parking 221
If the information in the navigation system's
R
digital map is incorrect or out-of-date.
If signs are ambiguous, e.g. road signs in road-
R
works or in adjacent lanes.
Regenerative brake system (plug-in hybrid)
Function of the regenerative brake system
Depending on the selected recuperation level, the
electric motor is operated as an alternator when
in overrun mode and during braking in order to
charge the high-voltage battery while driving. As
soon as you take your foot off the accelerator
pedal when the vehicle is in motion and in trans-
mission position h, recuperation in overrun
mode is initiated.
The higher the recuperation, the more sharply the
vehicle is braked when coasting and the more
electrical energy is fed into the high-voltage bat-
tery.
The deceleration in overrun mode may not be suf-
ficient depending on the driving conditions.
Decelerating to a standstill is not possible. Also
brake with the service brake if necessary. Always