Mercedes-Benz GLC Owner's Manual page 301

PLUG‑IN HYBRID operation
298
engine by providing additional torque when
the accelerator is depressed rapidly.
Overrun mode or braking
There are three possible operating modes
when the hybrid vehicle is decelerating:
When coasting and decelerating, energy
R
recuperation is already taking place
( page 287). The electric motor functions
Y
as an alternator and stores the recuperated
energy in the high-voltage battery.
When braking gently, the electric motor
R
increases the deceleration of the vehicle.
Energy recuperation is increased
( page 287). The electric motor functions
Y
as an alternator and stores the recuperated
energy in the high-voltage battery.
During heavy braking, the service brake is
R
also used to slow down the vehicle. Both
systems work together.
Driving in the city
Energy is recuperated during frequent decel-
eration and stopping in city traffic.
The vehicle can be driven by the electric
motor alone up to a speed of approximately
140 km/h.
The vehicle is driven by the electric motor
alone only when all conditions for the auto-
matic engine switch-off are fulfilled.
Further information on the automatic engine
switch-off ( page 298).
Y
Driving on inter-urban roads
The following phases are possible when driv-
ing on inter-urban roads:
rapid acceleration (boost mode)
R
constant energy consumption
R
energy recuperation
R
electric operation mode
R
Depending on the characteristics of the
route, there may be a lot of recuperated
energy available. This reduces consumption
and emissions.
Driving on the motorway
When driving on a motorway, the decrease in
wasted power has a particularly positive
effect on fuel consumption and emissions.
If the driver removes his foot from the accel-
erator pedal in drive program E and a speed of
160 km/h is not exceeded, the combustion
engine is automatically switched off.
Further information on the automatic engine
switch-off ( page 298).
Y
ECO start/stop function
General notes
The ECO start/stop function switches the
internal combustion engine off automatically
when the vehicle stops moving and at high
speeds ( page 299).
Y
All vehicle systems remain active, e.g. the
automatic climate control.
The ECO start/stop function is only available
in drive programs C and E. Electric-only oper-
ation is only possible in drive programs C and
E. Additional information for drive programs
( page 295).
Y
Automatic engine switch-off
The internal combustion engine is switched
off automatically if:
the driver removes his foot from the accel-
R
erator in drive program E and a speed of
160 km/h is not exceeded (
the internal combustion engine has
R
reached its operating temperature
the driver's seat belt is fastened and the
R
driver's door is closed
the driver only slightly depresses the accel-
R
erator pedal in order to, for example, main-
tain the current speed for a limited distance
the bonnet is closed and engaged properly
R
the high-voltage battery is charged suffi-
R
ciently
no malfunctions are present in the hybrid
R
drive system
page 299)
Y