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Hybrid
Hybrid functions and operating modes
App lies t o vehicles: with hybrid d rive
Fig. 111 Center console:
a•
butto n
"' To turn on EV mode, press the
1 .,,.,, 1
button. The
indicator light in the button will turn on. The
•
ind icator light also turns on in the instru-
ment cluster d isp lay.
The functions and operating modes described be-
low are selected automat ically by the vehicle con-
trol system, depending on the vehicle operating
status. This ensu res that the vehicle is always in
the correct operating mode. One exception is the
enhanced elect ric driving mode (EV mode), wh ich
is activated by the driver ¢
page
100.
Driving with the combustion engine
The vehicle is powered by the combustion eng ine.
The high voltage battery is charged simultane-
ously, if needed .
Full acceleration (boost)
In full acceleration, the vehicle is powered by
both the combustion eng ine and the electric mo-
tor . This operating mode is called
Boost
and is
only available for a sho rt amount of time because
it uses so much energy. Availabili ty depends on
the high voltage battery charge level.
The boost operating mode is act ivated by press-
ing the accelerator peda l all the way down.
Electric driving
The vehicle can be driven completely electrically
depending on the high voltage battery charge
level and the driving resistance. The combust io n
engine tu rns off at that time.
100
The combustion engine starts when accelerating
or when the high voltage battery charge level
drops below a certain threshold. The vehicle re-
sumes electric driving once the acceleration and
the high voltage battery charge leve l permit .
Enhanced electric driving mode (EV mode)
Pressing the
i"*' I
button ¢
fig.
111 can extend the
usual limits on e lectric driving so that you can a l-
ways dr ive in electric mode, if the condition of
the electrical system permits. The operating
mode is then set to maximum electr ic drive @ ,
@ ¢page
98,
fig.
110. It can be driven com-
pletely electrically for up to 1.8 miles (3 km) at a
constant 37 mph (60 km/h).
The following conditions must be met to activate
the enhanced electric drive:
- The high voltage battery must be sufficiently
charged.
- The temperature
of the 12 volt batteries and
the high voltage battery must be sufficient.
- The vehicle speed must not be higher than
62 mph (100 km/h).
- The transmission
must not be in tiptronic
mode .
- Offroad mode and hill descent assist must not
be turned on
r::!> page
191.
The combustion engine turns on and interrupts
the enhanced elect ric drive mode when the vehi-
cle is acce lerated. The gray indicator light
II
al -
so turns on in the disp lay. The enhanced electric
drive mode resumes automatically once acce lera-
tion stops.
The enhanced electric drive mode is deactivated
if at least one of the following conditions is met:
- The ignition is turned off.
- The
l~·I
button is pressed again .
- The high voltage battery charge level is low .
- The vehicle speed is higher than approximately
62 mph (100 km/h).
- The S selector lever position or tiptronic mode
is selected.
- Offroad mode or hill descent assist is switched
on.
The
ioa!• I
button must be pressed to reactivate it.
..,.
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