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Hybrid functions and operating modes
App lies to: vehicles wit h hybrid drive
Fig. 11 7 Cent er console: ,:::5v butto n
.,. To turn on EV mode, press the
1 4"1
button. The
indicator light in the button w ill turn on . The
•
ind icator light also turns on in the instru-
ment cluster d isp lay.
The funct ions and operating modes described be-
low are selec t ed automat ica lly by the vehicle con-
tro l system , depend ing on the vehicle ope rating
stat us. This e nsur es t hat t he vehicle is always in
the co rrect operating mo d e. One exception is t he
e nhanced ele ct ric dr iving mo d e (EV mode), wh ich
is act ivated by the dr iver
¢
page
103.
Driving with the combustion engine
The vehicle is powe red by the combust ion eng ine .
The high voltage battery is charged s imultane-
ously , if needed.
Full acceleration (boost)
In full acceleration, the vehicle is powe red by
both the comb ust ion eng ine and t he e lec t ric mo-
tor . This operat ing mode is called
Boost
and is
on ly available for a short amo unt of ti me because
it uses so much energy. Availa bility depends o n
the hig h voltage batte ry cha rge level.
The boost operating mode is act ivated by press-
ing the ac celerator ped al all the way down.
Electric driving
The vehicle can be driven completely e lec t rically
depend ing on t he high voltage battery charge
leve l and the driv ing resistance . The combust ion
e ngine t ur ns off at that time .
Hybrid
The combustion engine st arts when accelerati ng
or when the high voltage battery cha rge level
drops below a ce rtain t hr eshold . The vehicle re -
s umes electric driving once the acceleration and
the high voltage battery charge leve l permit .
Enhanced electric driving mode (EV mode)
Pressing the
l.al"I
button
¢
fig.
117 can extend the
usua l lim its on e lectr ic driving so that you can a l-
ways dr ive in e lectric mode, if the cond ition of
the e lectr ica l system permits. The operating
mode is the n set to maximum e lectr ic dr ive @ ,
@ ¢
page
101,
fig.
116 . It can be d riven com-
pletely e lect rically fo r up to 1.8 miles (3 km) at a
constant 37 mp h (60 km/h) .
The following conditions must be met to activate
the e nhanced electric drive:
- The high voltage battery m ust be s ufficiently
charged .
- The temperatu re of the 12 volt batteries an d
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 tipt ronic
mo d e .
- Offroad mode an d hill descen t ass ist mus t not
be turne d on
¢ page
187.
The combustion engine tu rns on and interrupts
t he e nhanced ele ct ric dr ive mode when t he vehi-
cle is acce le rat ed. The gray indicator light
B al-
so t urns on in the disp lay. The e nhanced electric
drive mo d e resumes automatically once acce le ra-
t ion stops.
The enhanced electric drive mode is deactivated
if at least one of the followi ng cond itions is met :
- The igni t ion is tur ned 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
l"'-''I
button m ust be pressed to react ivate it.
..,.
103
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