engine CITROEN C4 2007 Workshop Manual

127
X
C H E C K S
PETROL ENGINES
The covers and caps allow access for checking the levels 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.

128
X
C H E C K S * According to engine.
DIESEL ENGINES
The covers and caps allow access for checking the levels of the vari ous fl uids, for replacing certain components and for
priming the fuel system.

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. Priming pump * .

11. Degas screw * . As the diesel fuel circuit is
pressurised, any work on
this circuit is prohibited.

129
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 system checked by a
CITROËN dealer.
Oil level
Oil change
Refer to the Maintenance and
Warranty Guide for details of the in-
terval for this operation. Oil specifi cation
The oil must correspond to your engine
and conform to the manufacturer's
recommendations.
Brake fluid level
Fluid change
Refer to the Maintenance and
Warranty Guide for details of the in-
terval for this operation.
This fl uid must be changed regu-
larly. Fluid which has been used for
too long 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 system
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 tem-
perature of the coolant is regulated
by the fan. This can operate 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, unscrew
the cap by two turns to allow the pres-
sure 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.

130
X
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 plain 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 lamp,
accompanied by an audible warning
and a message on the multifunction
screen.
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.
Take used oil to a CITROËN dealer
(France) or an authorised waste
disposal site.
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
screen.
Top up the level when you next stop
the vehicle.

131
X
C H E C K S
CHECKS
Unless otherwise indicated, check
these components in accordance
with the Maintenance and Warranty
Guide and according to your engine.
Otherwise, have them checked by a
CITROËN dealer.
Battery The battery does not require
any maintenance.
However, check that the
terminals are clean and
correctly tightened, particu-
larly in summer and winter.
When carrying out work on the bat-
tery, refer to the "Practical information"
section for details of the precautions
to be taken before disconnecting 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 cabin fi lter may have an
adverse effect on the performance
of the air conditioning system and
generate undesirable odours.
Oil filter
Replace the oil fi lter each
time the engine oil is
changed. Particle 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 an audible
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 component.

132
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
For information relating to
checking the brake disc
wear, contact a CITROËN
dealer.
Parking brake If a loss of effectiveness
of this system is noticed,
the parking brake must be
checked, 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
level checking interval for this com-
ponent.
Refer to the Maintenance and
Warranty Guide for details of the
checking interval for this component.
Refer to the Maintenance and
Warranty Guide for details of the
level checking interval for this com-
ponent.

149
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 refi t
the cover. If the cover is not cor-
rectly positioned or not properly
closed, this could cause serious
problems on your vehicle. For
the same reason, take care not to
spill any liquid in the fusebox. All work on the maxi-fuses,
which are located in these
fuseboxes and which give
extra protection, must be carried
out by CITROËN technicians.

149
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 refi t
the cover. If the cover is not cor-
rectly positioned or not properly
closed, this could cause serious
problems on your vehicle. For
the same reason, take care not to
spill any liquid in the fusebox. All work on the maxi-fuses,
which are located in these
fuseboxes and which give
extra protection, must be carried
out by CITROËN technicians.

153
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
positive terminal (+) of the fl at
battery A , then to the positive ter-
minal (+) 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.

154
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 sec-
tion, you must yourself reinitialise
(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.