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-voltage bat-
tery is being charged.
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 condition
of charge of the high-voltage battery is inten-
tionally kept low or intentionally reduced.
The arrows for the energy flow are shown in
white.
Further information on the route-based operat-
ing strategy (
Y page 253).
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.
Electric operation mode and charging the
high-voltage battery
The electric motor is operating as a generator,
e.g. in overrun mode and when braking
(
Y page 253). The kinetic energy of the vehicle
is converted into electrical energy. The high-
voltage battery is being charged.
The arrows for the energy flow are shown in
green.
PLUG‑IN HYBRID operation
247
Driving and parking
Z
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