2007 Volvo XC90 
NOTE: After the battery has been disconnected or replaced, lock and unlock th\
e vehicle with the central 
locking system's remote control to reactivate such features as the power\
 windows, moonroof, courtesy 
lighting, etc. 
WARNING! 
Ventilation hose: 
l     The battery generates hydrogen gas, which is flammable and explosive. Th\
e 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 replac\
ed, it is essential that the 
ventilation hose is properly connected to the battery and that it is rou\
ted through the ventilation 
opening provided (see illustration). 
l     Be sure the ventilation hose is free of debris. 
l     Only use replacement batteries equipped with a ventilation hose. Consult\
 your Volvo retailer. 
pg. 194 Maintenance 
Replacing bulbs 
When replacing bulbs, keep the following points in mind: 
l     Never touch the glass of bulbs with your fingers. Grease and oils from y\
our fingers vaporize in the 
heat and will leave a deposit on the reflector, which will damage it. 
l     The optional Active Bi-Xenon headlight bulbs contain trace amounts of me\
rcury. These bulbs should 
always be disposed of by an authorized Volvo retailer. 
l     The following bulbs should only be replaced by a trained and qualified V\
olvo service technician: 
- Active Bi-Xenon headlights, 
- Courtesy (dome) lighting, 
- Reading lights, 
- Glove compartment lights 
- Turn signals and courtesy lights in the side door mirrors 
- High-mounted brake lights
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