Instrument panel lighting
The instrument panel lighting illuminates when
the ignition key is in position II and the light
switch (1) is in either position 
Move the thumb wheel (4) up to increase brightness or down to decrease brightness.
See also:
Changing the set speed
After a speed has been set, it can be increased or decreased by using the
or
buttons. Each time one of these buttons
is pressed, the vehicle's speed changes by 5 mph (approximately 8 km/h).
...
2012 Volvo S60 Review
Before test-driving the 2012 Volvo S60, I considered Volvos to be functional
cars that included cutting-edge safety features. Put another way, I thought
Volvos were dutifully practical family cars ...
Before a long distance trip
It is always worthwhile to have your vehicle checked by a trained and qualified
Volvo service technician before driving long distances. Your retailer will also
be able to supply you with bulbs, fu ...