Alfa Romeo 159 Owner's Manual page 65

QUICK FRONT WINDOW
DEMISTING/DEFROSTING
(MAX-DEF function)
Pressing button - the climate control
automatically activates timed operation
of all the functions required to quicken
demisting/defrosting of the windscreen
and front side windows and, on certain
versions, electric windscreen demisting
in the windscreen wiper area.
The MAX-DEF can be turned on also with
engine off. When this function is on the
circular led around the button will turn on.
64
The MAX-DEF function activates the fol-
lowing operations:
❒ rear panel turning off;
❒ air flow increase;
❒ air distribution at DEF;
❒ outside air intake;
❒ compressor activation;
❒ AQS function deactivation (where
provided)
❒ rear window heating activation.
When the MAX-DEF function is on, the
only manual operations possible are
manual adjustment of the fan speed and
switching heated rear window off.
IMPORTANT If the engine is not
warm enough, the function will not en-
gage the predefined fan speed imme-
diately, to limit the flow to the passen-
ger compartment of air that is not warm
enough to demist the windows.
Pressing again one of the following but-
tons: v, √
, AUTO, or - the system
switches off the MAX-DEF function, re-
suming the system operating conditions
prior to turning it on, in addition to ac-
tivating the last function required, if any.
IMPORTANT Don't turn the MAX-DEF
function on with engine off to prevent
draining the battery.