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10 Maintenance and service
10
362
IMPORTANT
If the following instruction is not observed
then the energy saving function for info-
tainment may be temporarily disengaged,
and/or the message in the information dis-
play about the main battery's state of
charge may be temporarily inapplicable,
following the connection of an external
battery or battery charger:
•
The negative battery terminal on the
car's starter battery must never be
used for connecting an external bat-
tery or battery charger - only the car
chassis may be used as the ground-
ing point.
See Jump starting with battery (p. 270) for
a description of how the cable clamps
must be attached.
NOTE
The life of the battery is shortened if it
becomes discharged repeatedly.
The life of the battery is affected by several
factors, including driving conditions and
climate. Battery starting capacity decrea-
ses gradually with time and therefore
needs to be recharged if the car is not
used for a longer time or when it is only
driven short distances. Extreme cold fur-
ther limits starting capacity.
To maintain the battery in good condition,
at least 15 minutes of driving/week is rec-
ommended or that the battery is con-
nected to a battery charger with automatic
trickle charging.
A battery that is kept fully charged has a
maximum service life.
Related information
•
Battery - symbols (p. 362)
•
Starter battery - replacement (p. 363)
•
Battery - Start/Stop (p. 365)
Battery - symbols
There are information and warning symbols
on the battery.
Symbols on the battery
Use protective goggles.
Further information is
available in the owner's
manual.
Store the battery out of
the reach of children.
The battery contains cor-
rosive acid.
