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92
II
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 thus no longer emitted.
Clogging of the particle filter
If there is risk of clogging, a message appears on the multifunction display, accompanied by a sound signal and
lighting of the SERVICE warning lamp.
This alert tells you that the particle filter is starting to fill up (in conditions of urban driving of exceptionally long dura-
tion: low speeds, traffic jams etc.)
To regenerate the filter, it is advised to drive as soon as possible, when traffic conditions permit, at a speed of
60 km/h (around 40 mph) or more for at least five minutes (until the alert message disappears).
If this alert persists, consult a CITROËN dealer.
Observation : After prolonged idling or driving at very low speeds, you may occasionally notice water vapour be-
ing emitted from the exhaust when accelerating. This is of no consequence to the running of the vehicle or to the
environment.
Diesel fuel additive level
If the additive level becomes too low, a message appears on the multifunction display, accompanied by a sound
signal and lighting of the SERVICE warning lamp. It is necessary to have the additive level topped up. Urgently
consult a CITROËN dealer.
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