2011 Citroen C4 engine coolant

1
MONITORING
32
Warning and indicator lamps
Visual indicators which inform the driver of the occurrence of a malfunction (warning
lamp) or of the operation of a system (operation or deactivation indicator lamp).

When the ignition is switched on
Certain warning lamps come on for a few seconds when the ignition is switched on.
When the engine is started, these warning lamps should go off.
If they remain on, before moving off, refer to the information on the warning lamp
in question.

Associated warnings
The illumination, fi xed or fl ashing, of certain warning lamps may be accompanied
by an audible signal and a message in the multifunction screen or in the central
colour screen associated with the satellite navigation system.

Warning lamps

When the engine is running or the vehicle is being driven, the illumination of one of the follow-
ing warning lamps indicates a malfunction which requires action on the part of the driver.
The warning comes on in the instrument panel or appears in the central colour screen
associated with the satellite navigation system.
If your vehicle has a screen,
a warning lamp coming on is
always accompanied by the dis-
play of an additional message,
to assist you in identifying the
problem.
If you encounter any problems,
do not hesitate to contact a
CITROËN dealer or a qualifi ed
workshop.



Warning lamp



is on



Cause



Action/Observations




STOP


fi xed, alone
or associated
with another
warning lamp,
accompanied by
an audible signal
and a message in
the screen. Illumination of this warning
lamp is associated with
a serious braking system,
power steering, engine
lubrication or cooling system
malfunction or a punctured
tyre. Stop as soon as it is safe to do so as
there is a risk that the engine will cut out
while driving.
Park, switch off the ignition and contact a
CITROËN dealer or a qualifi ed workshop.


Maximum
coolant
temperature


fi xed red. The temperature of the
cooling system is too high. Stop as soon as it is safe to do so.
Wait until the engine has cooled down
before topping up the level, if necessary.
If the problem persists, contact a
CITROËN dealer or qualifi ed workshop.

10
177
PETROL ENGINES
The various caps and covers 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/Fuses.

6.
Fusebox.
7.
Air fi lter.

8.
Engine oil dipstick.

9.
Engine oil fi ller cap.

10
178
*
According to engine.
DIESEL ENGINES

The various caps and covers allow access for checking the levels of the various 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/Fuses.

6.
Fusebox.

7.
Air fi lter.
8.
Engine oil dipstick.

9.
Engine oil fi ller cap.

10.
Priming pump * .

11 .
Bleed screw * .

10
CHECKS
179
CHECKING LEVELS
Check all of these levels regularly and
top them up if necessary, unless other-
wise indicated.
If a level drops signifi cantly, have the corre-
sponding system checked by a CITROËN
dealer or a qualifi ed workshop.

When working under the bon-
net, take care, as certain areas
of the engine may be extremely
hot (risk of burns).

The reading will only be correct if
the vehicle is on level ground and
the engine has been off for more
than 30 minutes.
The check is carried out either when the igni-
tion is switched on using the oil level indicator
in the instrument panel, or using the dipstick.

Oil level


Engine oil change
Refer to the Maintenance and Warranty
Guide for the interval for this operation.
In order to maintain the reliability of the
engine and emission control system,
the use of additives in the engine oil is
prohibited.

Oil specifi cation
The oil must correspond to your engine
and conform to the manufacturer's rec-
ommendations.



Brake fluid level

The brake fl uid level should be
close to the "MAX" mark. If it is
not, check the brake pad wear.

Changing the fl uid
Refer to the Maintenance and Warranty
Guide for the interval for this operation.

Fluid specifi cation
The brake fl uid must conform to the
manufacturer's recommendations and
meet the DOT4 standard.



Power steering fluid level

The power steering fl uid level
should be close to the "MAX"
mark. Unscrew the cap, with
the engine cold, to check the
level.
Coolant level

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 operate with the igni-
tion off.

On vehicles which are fi tted with a par-
ticle emission fi lter, the fan may oper-
ate after the vehicle has been switched
off, even if the engine 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.

Changing the coolant
The coolant does not have to be
changed.

Coolant specifi cation
The coolant must conform to the manu-
facturer's recommendations.

11
PRACTICAL INFORMATION
208
TOWING A TRAILER,
A CARAVAN, ETC.
We recommend the use of genu-
ine CITROËN towbars and their
harnesses that have been tested
and approved from the design
stage of your vehicle, and that
the fi tting of the towbar is en-
trusted to a CITROËN dealer or
a qualifi ed workshop.
If the trailer is not fi tted by a
CITROËN dealer, it is imperative
that it is fi tted using the vehicle's
electrical pre-equipment, in ac-
cordance with the manufacturer's
instructions. The rear parking sensors will
be deactivated automatically if
a genuine CITROËN towbar is
used.

Towbar suitable for the attachment of a
trailer or caravan with additional lighting
and signalling.
Your vehicle is primarily designed for
transporting people and luggage, but it
may also be used for towing a trailer. Driving with a trailer places greater de-
mands on the towing vehicle and the
driver must take particular care.


Driving advice


Distribution of loads


)
Distribute the load in the trailer so
that the heaviest items are as close
as possible to the axle and the nose
weight approaches the maximum
permitted without exceeding it.
Air density decreases with altitude, thus
reducing engine performance. Above
1 000 metres, the maximum towed load
must be reduced by 10 % for every
1 000 metres of altitude.
Refer to the "Technical Data" section for
details of the weights and towed loads
which apply to your vehicle.

Side wind


)
Take into account the increased
sensitivity to side wind.


Cooling
Towing a trailer on a slope increases
the temperature of the coolant.
As the fan is electrically controlled, its
cooling capacity is not dependent on
the engine speed.


)
To lower the engine speed, reduce
your speed. The maximum towed load on a long in-
cline depends on the gradient and the
ambient temperature.
In all cases, keep a check on the coolant
temperature.


)
If the warning lamp and the
STOP
warning lamp come
on, stop the vehicle and
switch off the engine as
soon as possible.


Braking
Towing a trailer increases the braking
distance.

Tyres


)
Check the tyre pressures of the towing
vehicle and of the trailer, observing the
recommended pressures.


Lighting


)
Check the electrical lighting and sig-
nalling on the trailer.

314
VISUAL SEARCH
TECHNICAL DATA - MAINTENANCE


Running out of Diesel fuel ............. 176

Checking levels ...................... 179-180


- oil

- brake fl uid

- coolant

- power steering fl uid

- screenwash/headlamp wash fl uid

- additive (Diesel with particle
emissions fi lter)


Changing bulbs....................... 192-197


- front

- rear

Petrol engines......................... 212-215
Diesel engines ........................ 216-218
Petrol/Diesel weights,
commercial versions ............... 219-220
Dimensions .................................... 221
Identifi cation markings ................... 222

Bonnet ........................................... 175
Petrol underbonnet ........................ 177
Diesel underbonnet ....................... 178
Checking components ............ 181-182


- battery

- air fi lter/passenger compartment
fi lter

- oil fi lter

- particle emissions fi lter (Diesel)

- brake pads/discs


Battery .................................... 202-204
Energy economy mode.................. 204

Engine compartment fuses .... 198, 201

315
ALPHABETICAL INDEX
A ABS and EBFD systems ............132
Accessories ................................210
Accessories socket,
12 V ................... 111, 112, 115, 119
Adjusting headlamps ..................100
Adjusting head restraints ..............72
Adjusting seat belt height ...........135
Adjusting the steering wheel ........78
Air conditioning (digital) ..........63, 66
Air conditioning (manual) .......63, 64
Air fi lter .......................................181
Air vents .......................................62
Alarm ............................................87
Anti-lock braking system (ABS) ... 132
Anti-pinch .....................................91
Anti-theft steering lock ..................81
Ashtray, portable ........................ 110
Assistance call ...................134, 224
Audible warning ..........................130
Audio streaming
(Bluetooth) ........................264, 290
Audio system ..................50, 52, 277
Automatic gearbox .............154, 182
Automatic illumination
of headlamps ........................96, 99
Automatic operation of hazard
warning lamps ..........................130
Automatic rain sensitive
windscreen wipers ............103, 104
Auxiliary sockets ........ 111, 265, 289
B Battery ................................181, 202
Battery, remote control ............82-84
Battery recharge .........................203
Bench seat, rear ...........................75
Blind spot sensors ......................162
Bluetooth (hands-free) .......248, 291B Bluetooth (telephone) .........248, 291
Bonnet ........................................175
Bonnet stay ................................175
Boot ..............................................90
Boot lamp ...........................108, 120
Brake discs .................................182
Brake lamps ...............................196
Brake pads .................................182
Brakes ........................................182
Braking assistance system .........132
C Capacity, fuel tank ........................94
CD ..............................................284
CD MP3 ..............................261, 285
Central locking .......................81, 85
Centre console ........................... 112
Changing a bulb ..................192-197
Changing a fuse ..................198-201
Changing a wheel ...............188-191
Changing a wiper blade .....105, 205
Changing the date ..............267, 302
Changing the remote
control battery ......................82, 83
Changing the time ........47, 267, 302
CHECK ...................................30, 46
Checking levels ..................179, 180
Checking the engine oil level .......43
Checking tyre pressures
(using the kit) ............................187
Checks ................................175-182
Child lock ....................................129

Children... 92, 122-129, 137, 139, 143
Child seats .........................122-128
Cigarette lighter .......................... 111
Clock ............................47, 267, 302
Closing the boot .....................81, 90
Closing the doors ...................81, 89C Cold climate screen ....................205
Colour and map
screen ..................55, 56, 229, 268

Connectors, audio ... 111, 265, 287, 289
Control stalk, wipers ............103-105
Coolant level ..............................179
Courtesy lamps ..........................106
Courtesy mirror .......................... 110
Cruise control .....................165, 168
Cup holder .................................. 112
Curtain airbags ...................140, 141
Customisation ..............................49
D Dashboard fusebox ....................199
Date (display) .....................267, 302
Daytime running lamps ...98, 192, 194
Deactivating the passenger
airbag .......................................139
Defrosting .....................................69
Diesel additive level ...................180
Diesel engine .......95, 176, 178, 216
Dimensions ................................221
Dipped beam ................96, 192, 194
Dipstick .................................43, 179
Directional lighting ..............101, 102
Direction
indicators ....99, 130, 192, 193, 196
Door mirrors ...................76, 77, 162
Doors ............................................89
Doors emergency control .............86
Door pockets ..............................109
Driving positions (storing) .............74
Dynamic emergency
braking .............................142, 145
E EBA (Emergency braking
assistance) ...............................132
Economy mode ..........................204