CITROEN C4 - Lighting Dimmer

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MONITORING
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System allowing certain screens to be
switched off for night driving.
The instrument panel remains on with
the vehicle speed, electronic or auto-
matic gearbox gear selected, cruise
control or speed limiter information, if
in use, and the low fuel alerts as ap-
propriate.
If there is an alert or a change in a
function or to a setting, the black panel
mode is interrupted.
Black panel (black screen)
Activation
 With the vehicle lighting on, press
this button again to activate the
black panel.
 Press once more to illuminate on
the various screens again.
Permits manual adjustment of the bright-
ness of the instruments and controls in
relation to the exterior brightness. Only
operates when the vehicle lighting is on in
night mode.
Lighting dimmer
Activation
 Press button A to change the bright-
ness of the instruments and controls.
 When the lighting reaches the mini-
mum setting, release the button,
then press again to increase it.
or
 When the lighting reaches the maxi-
mum setting, release the button,
then press again to reduce it.
 When the lighting reaches the level
of brightness required, release the
button.
Deactivation
When the vehicle lighting is off, or in
day mode (daytime running lamps
on), pressing the button or turning the
thumb wheel does not have any effect.
You can also modify the level of lighting
by turning the thumb wheel B , located
on the left of the steering wheel:
 upwards; to reduce the level,
 downwards; to increase the level.
This indicator and the lighting
value appear in the middle of
the instrument panel during
adjustment to show the lighting
level compared to the 16 levels avail-
able.