2012 Citroen C4 AIRCROSS engine

210
Checks











Running out of fuel (Diesel)
engine, the fuel system must be manuallyprimed if you run out of fuel; refer to thecorresponding Diesel engine compartment
view.



1.6 litre HDi engine
)
Fill the fuel tank with at least five litres of diesel. )
Open the bonnet.)
If necessary, unclip the styling cover for
access to the priming pump. ) Squeeze and release the priming pump
repeatedly until resistance is felt (there may
be resistance at the first press). ) Operate the star ter until the engine starts(if the engine does not star t at the first
attempt, wait around 15 seconds before
tr
ying again). ) If the engine does not star t after a few
attempts, operate the priming pump again
then start the engine. ) Clip the styling cover back in place. )
Close the bonnet.

211
8
Checks






Checking levels


Take care when working under the bonnet, as certain areas of the engine may be extremelyhot (risk of burns).

Oil level
The check is carried out with the dipstick.
This check will only be correct if the
vehicle is on level ground and theengine has been off for more than 30 minutes.
It is normal to top up the oil level between
two ser vices
(or oil changes). CITROËN
recommends that you check the level, and top
up if necessary, every 3 000 miles (5 000 km).
After topping up the oil, the check when switching on the ignition with the oil levelindicator in the instrument panel is not validduring the 30 minutes after topping up.
Engine oil change
Refer to the ser vicing booklet for details of theinterval 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 be the correct grade for your
engine and conform to the manufacturer'srecommendations.

If a level drops si
gnificantly, have the corresponding system checked by a CITROËN dealer or a qualified workshop.
Check all of these levels regularly, in line with the ser vicing booklet and the requirements of the warranty. Top them up if necessary, unless other wise indicated.
Dipstick

There are two marks on the dipstick:
A
= m
aximum
If you fill past this mark,contact a CITROËN dealer or a qualified workshop. B
= minimum
Never allow the level to fallbelow this mark.

212
Checks
The coolant level should be closeto the "MA X" mark but should never exceed it.

In addition, as the cooling system is pressurised,
wait at least one hour after switching off the engine before carrying out any work.
To a v o i d a ny risk of scalding, unscrew the cap by two turns to allow the pressure 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.


Fluid specifi cation

The coolant must conform to themanufacturer's recommendations. Th
e brake fluid level should be close
to the "MA X" mark. If it is not, check
the brake pad wear.
Brake fluid level
Changing the fl uid
Refer to the ser vicing booklet for details of the
interval for this operation.
Fluid specifi cation
The brake fluid must conform to themanufacturer's recommendations and meet the
DOT3 or DOT4 standard.

The cooling fan may start after switching off the engine: take care with ar ticles and
clothing that might become caught by the
fan blades.
When the engine is warm, the temperature of
the coolant is regulated by the fan.

214
Checks






Checks
12 V battery


Electrolyte level

For access to the battery, refer to the"12V bat tery" section.
The electrolyte level must bebetween the "LOWER LEVEL" and "UPPER LEVEL" marks.
Refer to the servicin
g booklet for
details of the replacement inter vals
for these components.
Air filter and passenger compartment filter
Replace the oil filter each time the engine oil is changed.
Refer to the servicing booklet for
details of the replacement inter val for
this component.
Oil filter
If necessary, top up using distilled water,
removing the battery cap from each cell.
Check the electrolyte level at least once a month.
When carrying out work on the battery, refer
to "12V battery" section for details of the
precautions to be taken before disconnectingthe battery and following its reconnection.
Unless other wise indicated, check these components in accordance with the ser vicin
g booklet and according to your engine.
Other wise, have them checked by a CITROËN dealer or a qualified workshop.
Dependin
g on the environment (e.g. dustyatmosphere) and the use of the vehicle (e.g. city driving), replace them twice as often if necessary.y A clogged passenger compar tment filter mayhave an adverse effect on the performance
of the air conditioning system and generate undesirable odours.

215
8
Checks
Manual gearbox
Refer to the servicing booklet for maintenance of the gearbox.
"CVT" gearbox
Refer to the servicing booklet for maintenance of the "CVT" gearbox.
Par ticle emissions filter (Diesel)

The star t of saturation of the particle filter is
indicated by the temporary illumination of this
warning lamp accompanied by a message in
the instrument panel screen.
As soon as the traffic conditions permit,regenerate the filter by driving at a speed of at least 25 mph (40 km/h) for about 20 minutes (with the 1.6 litre HDiengine the minimum speed is 36 mph(60 km/h)). If the warning lamp stays on, this indicates a low additive level.
On a new vehicle, the first particle filter regeneration operations may be accompanied by a "burning" smell, which is perfectly normal.Following prolonged operation of the vehicle at very low speed or at idle,
you may, in exceptional circumstances,notice the emission of water vapour at the exhaust on acceleration. This doesnot affect the behaviour of the vehicle or the environment.

216
Checks
Brake wear depends on the style
of driving, par ticularly in the case
of vehicles used in town, over shor t
distances. It may be necessary tohave the condition of the brakes checked, even between vehicle services.
Unless there is a leak in the circuit, a drop in
the brake fluid level indicates that the brake pads are worn.
Brake pads
For information on checking brake
disc wear, contact a CITROËN dealer
or a qualified workshop.
Brake disc wear
Parking brake
If excessive travel or a loss of effectiveness of this system isnoticed, the parking brake must be
checked, even between two services.
Only use products recommended by CITROËN or products of equivalent quality and specification.
In order to optimise the operationof units as impor tant as the brakingsystem, CITROËN selects and offers very specific products. To a v o i d d a m aging the electrical units, the use of a high pressure washer in the engine compar tment is strictlyprohibited.
Checking this system must be done by aCITROËN dealer or a qualified workshop.

9
217
Technical data
PETROL ENGINES1.6 litre 1152.0 litre 150
Model codes:
BU...
NKZ7NKZ7/SNKZ0NKZ0/S
AFYRAFZ7AFYVAFZMAFYTAFZHAFYWAFZP
Transmission mode2WD2WD4WD2WD4WD
Cubic capacity (cc) 1 590

1 998

Bore x stroke (mm) 75 x 90 86 x 86

Max power: EU standard
(kW) 86113

Max power engine speed
(rpm)
6 000
6 000
Max torque: EU standard
(Nm)154
199

Max torque en
gine speed (rpm)
4 000

4 200

Fuel Unleaded Unleaded

Catalytic converter
Yes
Yes

GEARBOXE
S Manual(5-speed)
Manual
(5-speed)
CVT(6-speed)

OIL CAPACITY
(in litres)
Engine (with filter replacement)
4.2

4.3
.../S
: model fitted with the Stop & Start (AS&G) function.















Engines and gearboxes

218
Technical data
Caution, towing with a lightly loaded towing vehicle can have an adverse affect on its roadholding.
The GTW and towed load values indicated are valid up to a maximum altitude of 1 000 metres; the towed load mentioned must be reduced by 10 % for each additional 1 000 metres of altitude.
The speed of a towing vehicle must not exceed 60 mph (10 0 km/h) (comply with the legislation in force in your country).
High ambient temperatures may result in a reduction in the performance of the vehicle to protect the engine; if the ambient temperature is above 37 °C, limit the towed load.
PETROL ENGINES1.6 litre 1152.0 litre 150
GearboxesManual (5-speed)Manual(5-speed)CVT (6-speed)
Model codes:BU...NKZ7NKZ7/SNKZ0NKZ0/SAFYR AFZ7AFYVAFZMAFYT AFZHAFYWAFZP
Transmission mode2WD2WD4WD2WD4WD



- Unladen weight 1 320
1 305 1 365 1 430
1 3951 460



- Kerb weight 1 395
1 380 1 440
1 505 1 470
1 535


-
Gross vehicle weight (GVW)

1 870

1 870

1 970

1 970
1 9701 970



- Gross vehicle weight (GVW) when towing
1 9251 925

2 035

2 0352 0352 035



-
Gross train weight (GTW)

on a 12% gradient3 025 3 025
3 3353 335
3 335
3 335



- Braked trailer
(within GTW limit) on a 10% or 12% gradient
1 100

1 1001 3001 300

1 300

1 300



-
Unbraked trailer
685
685720

750
720
750



- Recommended nose weight
55 55
65 65 65
65

















Weights and towed loads (kg)