Volvo 2010 XC90 Owner's Manual page 216

09 Maintenance and servicing
Battery
09
5. Disconnect the positive cable and pull the
ventilation hose from the battery.
6. Lift out the old battery and put a new bat-
tery into place.
7. Connect the positive cable first.
8. Connect the negative (ground) cable.
9. Be sure that the ventilation hose (see right
column) is securely connected to the bat-
tery and that the other end of the hose is
properly routed through the ventilation
opening in the floor of the battery compart-
ment.
Ventilation hose
216
10. Reinstall the cover and retaining bracket
and screw it securely in place.
NOTE
After the battery has been disconnected or
replaced, lock and unlock the vehicle with
the central locking system's remote key to
reactivate such features as the power win-
dows, moonroof, courtesy lighting, etc.
WARNING
•
The battery generates hydrogen gas,
which is flammable and explosive. The
battery is fitted with a ventilation hose
which vents hydrogen gas out of the
battery compartment through a ventila-
tion opening in the bottom of this com-
partment. If the battery must be
replaced, it is essential that the ventila-
tion hose is properly connected to the
battery and that it is routed through the
ventilation opening provided (see illus-
tration).
•
Be sure the ventilation hose is free of
debris.
•
Only use replacement batteries equip-
ped with a ventilation hose. Consult a
trained and qualified Volvo service tech-
nician.