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:
Switching BLIS on and off
BLIS is automatically activated when the ignition is switched on. The indicator
lights will provide confirmation by flashing 3 times.
The system can be switched off by pressing the BLIS button ...
Climate system maintenance
Special tools and equipment are required to
maintain and carry out repairs on the climate
system. Work of this type should only be done
by a trained and qualified Volvo service technician. ...
Replacing bulbs
When replacing bulbs, keep the following
points in mind:
• Never touch the glass of bulbs with your
fingers. Grease and oils from your fingers
vaporize in the heat and will leave a deposit
on t ...