Volvo S90 Owner's Manual page 593

IMPORTANT
If the following instruction is not observed
then the energy saving function for infotain-
ment may be temporarily disengaged, and/or
the message in the driver display about the
starter battery's state of charge may be tem-
porarily inapplicable, following the connection
of an external starter battery or battery
charger:
The negative battery terminal on the car's
•
starter battery must never be used for
connecting an external starter battery or
battery charger - only the car's negative
charging point may be used as the
grounding point.
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 cli-
mate. Battery starting capacity decreases
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 further limits starting capacity.
To maintain the battery in good condition, at
least 15 minutes of driving/week is recom-
mended or that the battery is connected to a
battery charger with automatic trickle charg-
ing.
A battery that is kept fully charged has a
maximum service life.
MAINTENANCE AND SERVICE
Location
The starter battery is located in the cargo area.
WARNING
If the starter battery is disconnected, the
automatic opening and closing function must
be reset to work properly. A reset must take
place for pinch protection to work.
IMPORTANT
On certain models, the battery is attached
with a retaining strap. Make sure the retaining
strap is properly tightened.
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