Driving
Citroen C4 / Citroen C4 Owner's Manual / Driving
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Dark button
After the first press on control C, only the top part of the display remains
illuminated.
A second press on control C triggers black panel mode.
BLACK PANEL
(with headlamps on)
This functi ...
Diesel particulate filter system
Complementary to the catalytic converter, this filter makes an active contribution
to the preservation of air quality by the retaining of the unburnt pollutant particles.
Black exhaust fumes are t ...






