2010 Volvo XC90 Owner's Manual - Page 216

09 Maintenance and servicing 09 Battery 5. Disconnect the positive cable and pull the ventilation hose from the battery. 6. Lift out the old battery and put a new battery 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 battery and that the other end of the hose is properly routed through the ventilation opening in the floor of the battery compartment. 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 windows, 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 ventilation opening in the bottom of this compartment. If the battery must be replaced, it is essential that the ventilation hose is properly connected to the battery and that it is routed through the ventilation opening provided (see illustration). Be sure the ventilation hose is free of debris. Only use replacement batteries equipped with a ventilation hose. Consult a trained and qualified Volvo service technician. • G030884 • Ventilation hose 216