See also:

How do states use OBD II for emission inspections?
Many states connect a computer directly to a vehicle's OBD II system. The inspector can then read "faults." In some states, this type of inspection has replaced the tailpipe emission ...

Warning symbols on the battery
NOTE A used battery should be disposed of in an environmentally responsible manner. Consult your Volvo retailer or take the battery to a recycling station. ...

Blower control
Turn the control clockwise to increase or counterclockwise to decrease the blower speed. If AUTO is selected, blower speed will be regulated automatically and this will override manual adjustment. ...