Operation Manual

charge immediatelycharge immediately message. This pro-
tects the battery from exhaustive discharge.
It is not possible to restart the drive system
until after charging.
Do not leave the vehicle parked for longer
than 14 days with a high-voltage battery con-
dition of charge below 20%.
You can check the condition of charge in the
charge level display (Y page 184).
Further information on the "Energy flow dis-
play" can be found in the "Trip" menu
(Y page 187).
High and low outside temperatures
Low outside temperatures
The efficiency of the high-voltage battery is
significantly reduced at very low outside tem-
peratures. The high-voltage battery is then no
longer able to provide the normal electrical
power output.
High outside temperatures
To prevent damage to the high-voltage bat-
tery due to very high outside temperatures,
the maximum power output of the high-volt-
age battery is reduced automatically.
The E-CELL display indicates the maximum
amount of power available (Y page 183).
Energy consumption and range
This range is reduced by:
R
high and low outside temperatures
R
a non-anticipatory driving style
R
switching on consumers, e.g. air-condition-
ing system or heating.
The battery's physical characteristics are
such that leaving the vehicle parked for an
extended period at low outdoor temperatures
without charging it can lead to:
R
a reduction in battery performance
R
longer charge times
In extreme cases, this could mean that the
vehicle cannot be started. For this reason,
connect the charging cable when leaving the
vehicle parked for long periods at low outdoor
temperatures.
As a result of its basic characteristics, the
amount of energy available from the high-
voltage battery decreases over the course of
its life.
This reduces:
R
the maximum range that can be achieved
by the vehicle
R
the maximum output (acceleration) of the
vehicle
You can actively reduce the energy consump-
tion of your vehicle in a number of ways, for
example, by:
R
an anticipatory driving style
R
reducing the use of electrical consumers
R
having the vehicle regularly maintained
The charging time of the high-voltage battery
may change over the course of its life.
Displaying energy consumption and
recuperated electric energy (COMAND/
Audio 20)
:
Energy consumption
;
Recuperated electric energy
Every bar of the graph displays the average
value for one minute.
Energy consumption indicator : may differ
from the indicator in the From StartFrom Start
(Y page 187) trip computer in the TripTrip
menu.
142
High-voltage battery
Driving and parking