Mercedes-Benz S-Class Operator's Manual page 285

If you rapidly depress the accelerator, the
electric motor supports the internal combus-
tion engine by providing additional torque.
The arrows for the energy flow are shown in
red.
Driving using the engine plus energy
recovery
The engine powers the vehicle. The electric
motor is operating as a generator, e.g. in
overrun mode and when braking
( page 289). The kinetic energy of the vehi-
Y
cle is converted into electrical energy. The
high-voltage battery is being charged.
The arrows for the energy flow are shown in
green.
Driving using the internal combustion
engine and charging the high-voltage bat-
tery
The engine powers the vehicle. The engine
also powers the electric motor. The electric
motor operates as a generator. The high-volt-
age battery is being charged.
PLUG-IN HYBRID operation
The arrows for the energy flow are shown in
white.
Driving using the internal combustion
engine and discharging the high-voltage
battery
The engine powers the vehicle. If the vehicle
is approaching a downhill gradient with a high
potential for energy recuperation, the condi-
tion of charge of the high-voltage battery is
intentionally kept low or intentionally
reduced.
The arrows for the energy flow are shown in
white.
Further information about map-based energy
management ( page 289).
Y
Electric operation mode
The electric motor powers the vehicle. The
high-voltage battery supplies energy to the
electric motor.
The arrows for the energy flow are shown in
green.
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