engine Citroen C4 DAG 2008.5 1.G Workshop Manual

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X
C H E C K S
PETROL ENGINES
They allow you access for checking the level of the various fl uids and for replacing certain components.

1. Power steering reservoir.

2. Screenwash and headlamp wash
reservoir.
3. Coolant reservoir.

4. Brake fl uid reservoir.

5. Battery.
6. Fuse box.

7. Air fi lter * .

8. Dipstick.

9. Engine oil fi ller cap.
* According to engine.

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X
C H E C K S * According to engine.
DIESEL ENGINES
They allow you access for checking the level of th e various fl uids, for replacing certain components and for repriming the fuel.

1. Power steering reservoir.

2. Screenwash and headlamp
wash reservoir.

3. Coolant reservoir.

4. Brake fl uid reservoir.

5. Battery.
6. Fuse box.

7. Air fi lter * .

8. Dipstick.

9. Engine oil fi ller cap.

10. Repriming pump * .

11. Degas screw * . As the diesel circuit is pres-
surised, any work on this
circuit is prohibited.

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X
C H E C K S
CHECKING LEVELS
Check all of these levels regularly
and top them up if necessary, unless
otherwise indicated.
If a level drops signifi cantly, have the
corresponding circuit checked by a
CITROËN dealer.
Oil level
Draining the engine
Refer to the servicing booklet for de-
tails of the interval for this operation. Oil specifi cation
The oil must correspond to your engine
and conform to the manufacturer's rec-
ommendations.
Brake fluid level
Draining the circuit
Refer to the servicing booklet for de-
tails of the interval for this operation.
This fl uid must be changed regularly.
Fluid which has been used exces-
sively may cause a loss of braking
effi ciency.
Fluid specifi cation
The brake fl uid must conform to the
manufacturer's recommendations
and fulfi l the DOT4 standards.
Coolant level
Draining the circuit
The coolant does not have to be
changed.
Fluid specifi cation
The coolant must conform to the
manufacturer's recommendations.
The reading will only be
correct if the vehicle is on
level ground and the engine
has been off for more than
15 minutes.
The check is carried out either when
the ignition is switched on using the
oil level indicator on the instrument
panel, or using the dipstick.
Between two oil changes, the con-
sumption should not exceed 0.5 litre
per 600 miles (approx. 1 000 km).
Check this level also between each
scheduled service and before long
journeys. The brake fl uid level should
be close to the "MAX" mark.
If it is not, check the brake
pad wear.
The coolant level should be
close to the "MAX" mark but
should never exceed it.
When the engine is warm,
the temperature of the coolant is
regulated by the fan. This can oper-
ate with the ignition off.

On vehicles which are fi tted with
a particle emission fi lter, the fan
may operate after the vehicle has
been switched off, even if the en-
gine is cold.
In addition, as the cooling system is
pressurised, wait at least one hour
after switching off the engine before
carrying out any work.
To avoid any risk of scalding, un-
screw the cap by two turns to al-
low the pressure to drop. When the
pressure has dropped, remove the
cap and top up the level.
In order to maintain the re-
liability of the engine and
emission control system,
the use of additives in the engine
oil is prohibited.

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C H E C K S
Screenwash and headlamp
wash fluid
Fluid specifi cation
For optimum cleaning and to avoid
freezing, this fl uid must not be
topped up or replaced with water.
Reservoir capacities:
- screenwash: approximately 3 litres,
- screenwash and headlamp wash: approximately 6 litres.
Diesel additive level
(Diesel engine with particle
emission filter)
A low additive level is indicated by
lighting of the service warning light,
accompanied by an audible warning
and a message on the multifunction
display.
Topping up
This additive must be topped up by
a CITROËN dealer without delay.
Used products
Avoid prolonged contact of
used oil or fl uids with the
skin.
Most of these fl uids are harmful to
health or indeed very corrosive.
Do not discard used oil or
fl uids into sewers or onto
the ground.
Empty used oil into the containers pro-
vided for this purpose in the CITROËN
network.
In the case of vehicles fi tted
with headlamp washers, the
minimum level of this fl uid is
indicated by an audible signal
and a message on the multifunction
display.
Top up the level when you stop the
vehicle.

Page 153 of 282

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X
C H E C K S
CHECKS
Unless otherwise indicated, check
these components in accordance
with the Maintenance and Warranty
Guide and in relation 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, partic-
ularly 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. 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 passenger compartment
fi lter may have an adverse effect on
the performance of the air condition-
ing system and generate undesirable
odours.
Oil filter
Replace the oil fi lter each
time the engine oil is
changed. Particulate filter system
(Diesel)
Complementary to the catalytic
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 a sound
signal and lighting of the service
warning lamp.
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 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.
Refer to the Maintenance and
Warranty Guide for details of the
replacement interval for this compo-
nent.

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X
C H E C K S
Brake pads Brake wear depends on
the style of driving, par-
ticularly in the case of ve-
hicles used in town, over
short distances. It may be
necessary to have the condition of
the brakes checked, even between
vehicle services.
Unless there is a leak in the circuit, a
drop in the brake fl uid level indicates
that the brake pads are worn.
Manual gearbox
The gearbox does not re-
quire any maintenance (no
oil change).
6-speed electronic gearbox
system The gearbox does not re-
quire any maintenance (no
oil change).
Automatic gearbox The gearbox does not re-
quire any maintenance (no
oil change). Brake disc wear status
For information relating to
checking the brake disc wear
status, contact a CITROËN
dealer.
Handbrake If the handbrake travel is
too long or if a loss of ef-
fectiveness of this system
is noticed, the handbrake
must be adjusted, even
between two services.
This system must be checked by a
CITROËN dealer. Only use products recom-
mended by CITROËN or
products of equivalent quality
and specifi cations.
In order to optimise the operation
of units as important as the braking
system, CITROËN selects and of-
fers very specifi c products.
To avoid damaging the electrical
units, the use of a high pressure
washer in the engine compartment
is strictly prohibited .
Refer to the Maintenance and
Warranty Guide for the details of
the checking interval for this compo-
nent.
Refer to the servicing booklet for de-
tails of the checking interval for this
component.
Refer to the servicing booklet for de-
tails of the checking interval for this
component.

Page 169 of 282

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XI
P R A C T I C A L I N F O R M A T I O N Fuses in the engine
compartment Access to the fuses

 Detach and remove the cover.

Access to the second dashboard
fusebox

After any operation on the fuses
in the fusebox, check that the
fusebox cover is put back cor-
rectly for their protection. Table of fuses

Fuse N° Rating Functions

F36 30 A Hi-Fi amplifi er

F37 30 A Driver's electric seat

F39 20 A Heated seats

After any operation, carefully
re-
fi t
the cover. If the cover is not
correctly positioned or not prop-
erly closed, this could cause se-
rious problems on your vehicle.
For the same reason, take care
not to spill any liquid in the fuse-
box. All work on the maxi-fuses,
which are located in these
fuseboxes and which give
extra protection, must be carried
out by CITROËN technicians.

Page 170 of 282

147
XI
P R A C T I C A L I N F O R M A T I O N Fuses in the engine
compartment Access to the fuses

 Detach and remove the cover.

Access to the second dashboard
fusebox

After any operation on the fuses
in the fusebox, check that the
fusebox cover is put back cor-
rectly for their protection. Table of fuses

Fuse N° Rating Functions

F36 30 A Hi-Fi amplifi er

F37 30 A Driver's electric seat

F39 20 A Heated seats

After any operation, carefully
re-
fi t
the cover. If the cover is not
correctly positioned or not prop-
erly closed, this could cause se-
rious problems on your vehicle.
For the same reason, take care
not to spill any liquid in the fuse-
box. All work on the maxi-fuses,
which are located in these
fuseboxes and which give
extra protection, must be carried
out by CITROËN technicians.

Page 174 of 282

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XI
P R A C T I C A L I N F O R M A T I O N
BATTERY
Procedure for charging your battery
when it is fl at or for starting the en-
gine using another battery.
Access to the battery
The battery is located under the
bonnet.
To gain access to it:

 open the bonnet using the inte-
rior lever, then the exterior lever,

 secure the bonnet strut,

 remove the plastic cover to gain
access to the two terminals,

 unclip the fuse box to remove
the battery, if necessary.
Charging the battery using a
battery charger

 Disconnect the battery from the
vehicle.

 Follow the instructions for use
provided by the manufacturer of
the charger.

 Reconnect starting with the neg-
ative terminal (-).

 Check that the terminals and
connectors are clean. If they are
covered with sulphate (whitish or
greenish deposit), remove them
and clean them.
Starting using another
battery
The batteries contain harm-
ful substances such as sul-
phuric acid and lead. They
must be disposed of in accordance
with regulations and must not, in
any circumstances, be discarded
with household waste.
Take used remote control batteries
and vehicle batteries to a special
collection point.
It is advisable to disconnect the
battery if the vehicle is to be left un-
used for more than one month.

 Connect the red cable to the posi-
tive terminal (+) of the fl at battery

A , then to the positive terminal (+)
of the slave battery B .

 Connect one end of the green or
black cable to the negative ter-
minal (-) of the slave battery B .

 Operate the starter, let the en-
gine run.

 Wait until the engine returns to
idle and disconnect the cables.

Page 175 of 282

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XI
P R A C T I C A L I N F O R M A T I O N
ENERGY ECONOMY MODE
System which manages the duration
of use of certain functions to con-
serve a suffi cient level of charge in
the battery.
After the engine has stopped, you can
still use functions such as the audio
and telematics system, windscreen
wipers, dipped headlamps, courtesy
lights, etc. for a maximum combined
duration of thirty minutes. Switching to economy mode
Once the thirty minutes are over, a
message appears on the multi-func-
tion screen indicating that the vehicle
has switched to economy mode
and the active functions are put on
standby.
Exiting economy mode
These functions are reactivated au-
tomatically next time the vehicle is
driven.
In order to resume the use of these
functions immediately, start the en-
gine and let it run:
- for less than ten minutes to use
the equipment for an equivalent
duration,
- for more than ten minutes to use the equipment for approximately
thirty minutes.
A fl at battery prevents the
engine from starting (refer
to the corresponding para-
graph).
Following reconnection of the
battery
Following reconnection of the bat-
tery, switch on the ignition and wait
1 minute before starting to permit
initialisation of the electronic sys-
tems. However, if slight diffi culties
are encountered following this oper-
ation, contact a CITROËN dealer.
Referring to the corresponding
section, you must yourself reinitial-
ise (depending on equipment):
- the remote control key,
- the one-touch electric windows,
- the settings of the multifunction
screen,
- the audio equipment radio sta- tions,
- the GPS satellite navigation system.
Do not disconnect the ter-
minals while the engine is
running.
Do not charge the batteries without
disconnecting the terminals fi rst.
Do not push the vehicle to start the
engine if it is fi tted with a 6-speed
electronic gearbox system.
Before disconnecting
the battery
Wait 2 minutes after switching off
the ignition before disconnecting
the battery.
Close the windows and the doors
before disconnecting the battery.

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