CITROEN C4 DAG 2006 Owners Manual

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122 E N G I N E 1 . 4 i 1 6 V

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E N G I N E 1 . 6 i 1 6 V

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124 E N G I N E 2 . 0 i 1 6 V ( 1 4 3 h p )

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E N G I N E 2 . 0 i 1 6 V ( 1 8 0 h p )

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Due to the fact that the diesel
system is a high pressure
system:
IT IS FORBIDDEN TO CARRY OUT
ANY REPAIRS TO THE SYSTEM.
HDi engines are of a highly technical nature.
All maintenance and repairs require specific qualificati ons
which only your CITROËN Dealer can guarantee.
Only on HDi 110 engines
without particle filter.
E N G I N E H D i 9 2 - H D i 1 1 0
E N G I N E H D i 1 1 0 F A P

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Due to the fact that the diesel
system is a high pressure
system:
IT IS FORBIDDEN TO CARRY OUT
ANY REPAIRS TO THE SYSTEM.
HDi engines are of a highly technical nature.
All maintenance and repairs require specific qualificati ons
which only your CITROËN Dealer can guarantee.
E N G I N E H D i 1 3 8
E N G I N E H D i 1 3 8 F A P

A
B
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128 Air filter
Follow the recommendations
in the Maintenance Guide.
When working under the bonnet, when the engine is hot (even stopped and the ignition switched off), the cooling fan could operate at any time.
Check the engine oil level frequently between routine service visits,
as well as prior to long journeys.
Engine coolant
The coolant level should
be between the
MAX and
MIN marks on the header
tank.
If the engine is hot, wait 15 min-
utes.
Quality: See “Maintenance Guide”
Never work on the cooling sys-
tem if the engine is hot. (See
“Levels”).
12 volt battery
See “Emergency starting
with a slave battery”. Engine oil
Check the oil level with the
vehicle parked on level
ground, after the engine
has been switched off for at least
fifteen minutes.
Quality: See “Maintenance Guide”
Brake fluid
The fluid level must be
situated within the MAX
and MIN marks visible on
the reservoir.
Quality: See “Maintenance Guide”
If the warning lamp comes on
while you are driving, stop imme-
diately and contact the CITROËN
network.
Dust filter / odour filter
(active carbon)
See “Maintenance Guide”
Take out the oil dipstick.
The level must be between
the
MAX and MIN marks
on the dipstick
It should never exceed the maximum mark.
Windscreen, rear screen
and headlamp washer
fluid
It is recommended that you use
products approved by CITROËN.
Capacity: See “Capacities”
MAX
MIN
L E V E L S
R e f e r t o t h e c h a p t e r U s e r P r e c a u t i o n

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129
Radiator - coolant
The coolant must only be checked
or topped up if the power unit is
cold.
Engine hot
Release the protection cover.
Wait 15 minutes or until the tem-
perature is below 100 degrees C.
Using a cloth to protect your hands,
slowly slacken the filler cap as
far as the safety catch. Allow the
pressure to reduce before remov-
ing filler cap.
Adding engine oil
Remove the dipstick before top-
ping up.
Check the level after filling.
It should never exceed the
maximum mark.
Screw on the cap before closing
the bonnet.
Quality:
See “Maintenance Guide”.
When working under the bonnet, when the engine is hot
(even stopped and the ignition switched off), the cooling fan could operate at any time. Topping up the
cooling system
The coolant level
should be between
the
MAX and
MIN marks on the
header tank.
Top up the level. If you have to
add more than 1 litre, you should
have the cooling system checked
by CITROËN.
Make sure that the cap is on
correctly
Note: The necessity to top up
frequently would indicate a mal-
function that should be checked at
the earliest opportunity.
Note: on vehicles equipped with a
particle filter, the cooling fan may
operate for some ten minutes after
the engine has stopped.
L E V E L S

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130 Windscreen and rear screen
washer fluid
For best results as well as for
your safety, use only CITROËN
approved products which protect
at temperatures as low as -25°C
to -30°C.
It is essential to have sufficient
screen wash fluid if your vehicle is
equipped with Xenon headlamps.
To check the level, place a finger
on aperture
A before removing
the cap.
Capacity: see “Capacities”. Brake fluid
The synthetic fluid not only gives protection against corrosion bu
t also
ensures correct functioning of the braking system in all environment al con-
ditions, therefore you should only use the synthetic product reco mmended
by the CITROËN network. (this fluid must be replaced every two years).
These important requirements are detailed in your vehicle’s maint enance
guide.
Quality: see “maintenance guide”.
When working under the bonnet, when the engine is hot
(even stopped and the ignition switched off),
the cooling fan could operate at any time.
Brake fluid reservoir
Check and top up at regular inter
-
vals.
The fluid level must be situated
within the MAX and MIN marks
visible on the reservoir.
If the warning lamp lights, stop
immediately and contact the near-
est CITROËN dealer.
l E V E l s

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131
Protection cover
Engine HDi 138
Remove the protection cover by
first unclipping point
1, then 3
and 4. Detach point 2 by pulling
towards you, then lift.
To reposition the protection cover,
attach point 2 first. Lower the
cover, keeping it centred. Clip
points 1 and 4, pushing vertically
and slightly rearwards. Clip point 3
pushing down vertically.
HDi engines are of a highly technical nature.
All maintenance and repairs require specific qualificati ons which
only your CITROËN Dealer can guarantee.
Bleeding of water from the
diesel fuel filter
To be bled on a regular basis (at
every oil change).
To evacuate the water, slacken the
bleed screw or the water in diesel
fuel sensor, which is located at
the base of the filter, until water
ceases to flow out.
Then retighten the bleed screw or
the water in diesel fuel sensor.
D I E S E L I N J E C T I O N E Q U I P M E N T