CITROËN C4 Owner's Manual page 195

CHECKS
Unless otherwise indicated, check
these components in accordance
with the Maintenance and Warranty
Guide and according to your en-
gine.
Otherwise, have them checked by a
CITROËN dealer.
Battery
The battery does not re-
quire any maintenance.
However, check that the
terminals are clean and
correctly tightened,
ticularly in summer and
winter.
When carrying out work on the bat-
tery, refer to the "Practical infor-
mation" section for details of the
precautions to be taken before dis-
connecting the battery and following
its reconnection.
C H E C K S
Air filter and passenger compartment filter
Refer to the Maintenance
and Warranty Guide for
details of the replacement
intervals for these compo-
nents.
Depending on the environment (e.g.
dusty atmosphere) and the use of
the vehicle (e.g. city driving), replace
them twice as often if necessary
(refer to the "Engines" paragraph).
A clogged cabin fi lter may have an
adverse effect on the performance
of the air conditioning system and
generate undesirable odours.
par-
Oil filter
Replace the oil fi lter each
time the
changed.
Refer to the Maintenance and Warranty
Guide for details of the replacement in-
terval for this component. terval for this component. terval for this component. terval for this component. terval for this component.
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Particulate filter system
(Diesel)
Complementary
converter, this fi lter makes an ac-
tive contribution to the preservation
of air quality by the retaining of the
unburnt pollutant particles. Black
exhaust fumes are thus no longer
emitted.
After prolonged idling or driving at very
low speeds, you may occasionally no-
tice water vapour being emitted from
the exhaust when accelerating. This is
of no consequence to the running of
the vehicle or to the environment.
If there is risk of clogging, a mes-
sage appears on the multifunction
screen, accompanied by an audi-
ble signal and lighting of the serv-
ice warning lamp.
engine oil is
This alert tells you that the particle
fi lter is starting to fi ll up (in conditions
of urban driving of exceptionally long
duration: low speeds, traffi c jams
etc.)
To regenerate the fi lter, it is advised To regenerate the fi lter, it is advised To regenerate the fi lter, it is advised To regenerate the fi lter, it is advised To regenerate the fi lter, it is advised
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to drive as soon as possible, when to drive as soon as possible, when to drive as soon as possible, when to drive as soon as possible, when to drive as soon as possible, when
traffi c conditions permit, at a speed
of 40 mph (around 60 km/h) or
more for at least fi ve minutes (until
the alert message disappears).
If this alert persists, consult a
CITROËN dealer.
to the catalytic
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