2021 CITROEN C4 AIRCROSS engine

214
Coolant level
The coolant level should be between
the two marks.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 pressure to drop.
When the pressure has dropped, remove the
cap and top up the level.
Fluid specification
The coolant must conform to the
manufacturer's recommendations.
The 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 fluid
Refer to the maintenance and warranty guide
for details of the interval for this operation.
Fluid specification
The brake fluid must conform to the
manufacturer's recommendations and meet
the
DOT3 or DOT4 standard.
The cooling fan may star t 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.
Checks

215
Avoid prolonged contact of used oil or
fluids with the skin.
Most of these fluids are harmful to
health or indeed very corrosive.
Do not discard used oil or fluids into
sewers or onto the ground.
Take used oil to a CITROËN dealer or
a qualified workshop (France) or to an
authorised waste disposal site.
Used products
To p p i n g u p
The reservoir must be topped up without delay
by a CITROËN dealer or a qualified workshop.
Additive level (1.6 HDi
110 Diesel versions with
particle filter)
The additive reservoir low level is indicated by
the display of this message.
Fluid specification
For optimum cleaning, this fluid must not be
topped up with or replaced with plain water.
Screenwash and headlamp
wash fluid
To check or top up the fluid, stop the
vehicle, apply the parking brake and
switch off the engine.
F

O

pen the bonnet and secure it with the
st ay.
F
o
p

en the filler cap for the screenwash
reservoir.
F

C

heck the level using the gauge, then
top-up if necessary.
F

R

efit the cap on the reservoir and close the
bonnet. In wintry conditions, the use of fluid with
an ethyl alcohol or methanol base is
recommended.
8
Checks

216
Checks
12 V battery
Electrolyte level
For access to the battery, refer to the
"12V battery" section.Refer to the maintenance and
warranty guide for details of the
replacement intervals for these
components.
Air filter and passenger compartment filter
Replace the oil filter each time the
engine oil is changed.
Refer to the maintenance and
warranty guide for details of the
replacement interval 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 disconnecting
the battery and following its reconnection.
Unless other wise indicated, check these components in accordance with the maintenance and warranty guide and according to your engine.
Other wise, have them checked by a CITROËN dealer or a qualified workshop.
The electrolyte level must be between the
"LOWER LEVEL" and "UPPER LEVEL" marks.
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 .
A clogged passenger compartment filter may
have an adverse effect on the per formance
of the air conditioning system and generate
undesirable odours.
Checks

217
Manual gearbox
Refer to the maintenance and
warranty guide for servicing of the
gearbox.
"CVT" gearbox
Refer to the maintenance and
warranty guide for servicing of the
"CVT" gearbox.
Particle filter (Diesel)
The start 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 HDi
engine the minimum speed is 36 mph
(60 km/h)).
If the warning lamp stays on, this
indicates a low additive level.
on a n

ew vehicle, the first particle
filter regeneration operations may be
accompanied by a "burning" smell,
which is per fectly 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 does
not affect the behaviour of the vehicle
or the environment.
8
Checks

219
* The maximum power corresponds to the value type-approved on a test bed, under conditions defined in European legislation (Directive 1999/99/EC).
Engines and gearboxes
.../S: model fitted with the Stop & Start (AS&G) function.
PETROL ENGINES
1.6 litre 1152.0 litre 150
Model codes : BU... NKZ7

NK Z 7/S
NKZ0
NKZ0/S AFYR

AFZ7 AFYV
AFZM AFYT
AFZH AFYW
AFZP
Transmission mode 2WD2WD 4WD2WD 4WD
Cubic capacity (cc) 1 5901 998
Bore x stroke (mm) 75 x 9086 x 86
Max power*: EU standard (kW) 86113
Max power engine speed (rpm) 6 0006 000
Max torque: EU standard (Nm) 15 419 9
Max torque engine speed (rpm) 4 0004 200
Fuel UnleadedUnleaded
Catalytic converter Ye sYe s
GEARBOXES Manual
(5-speed) Manual
(5-speed) CVT
(6-speed)
OIL CAPACITY (in litres)
Engine (with filter replacement) 4.24.3
9
Technical data

220
Petrol weights and towed loads (kg)
The values for maximum towed weights type
approved according to the sales zone (see the
tables on the following pages).
The exact values are given in your vehicle's
registration document as well as on the
manufacturer's plate.
They are also mentioned in sales brochures.
For more details, contact a CITROËN dealer or
a qualified workshop.The kerb weight is equal to the unladen
weight
+ driver (75 kg).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 (100 km/h) (comply with the legislation
in force in your country).
High ambient temperatures may result in a
reduction in the per formance of the vehicle to
protect the engine; if the ambient temperature
is above 37 °C, limit the towed load.
The weight of the braked trailer can be
increased, within the GTW limit, if the
GV W of the towing vehicle is reduced
by an equal amount. Please note that
towing using a lightly loaded towing
vehicle may have an adverse effect
on its road holding
.
Technical data

221
PETROL ENGINES1.6 litre 115
Gearboxes Manual (5-speed)
Model codes: BU... NKZ0

NKZ0/S
Transmission mode 2WD
-

U
nladen weight 1 310
-

K
erb weight 1 385
-

G
ross vehicle weight (GV W) 1 870
-

G
ross vehicle weight (GV W) when towing 1 925
-

G
ross train weight (GTW)
o

n a 12% gradient 3 025
-

B
raked trailer (within GTW limit)
o

n a 10% or 12% gradient 1 100
-

U
nbraked trailer 685
-

R
ecommended nose weight 55
For zones: Europe, Turkey, French overseas dominions and territories.
9
Technical data

222
For: Russia, Ukraine, Morocco, Argentina, Chile, French overseas dominions and territories (2.0 litre 150 engine).
PETROL ENGINES1.6 litre 1152.0 litre 150
Gearboxes Manual
(5 - speed) Manual (5-speed)
CVT (6- speed)
Model codes: BU... NKZ7AFZ7AFZM AFZHAFZP
Transmission mode 2WD2WD 4WD2WD 4WD
-

U
nladen weight 1 3151 355 1 4201 385 1 450
-

K
erb weight 1 3901 4301 4951 460 1 525
-

G
ross vehicle weight (GV W) 1 8701 9701 9701 9701 970
-

G
ross vehicle weight (GV W) when towing 1 9252 035 2 0352 0352 035
-

G
ross train weight (GTW)
o

n a 12% gradient 3 025
3 335 3 3353 3353 335
-

B
raked trailer (within GTW limit)
o

n a 10% or 12% gradient 1 100
1 300 1 3001 3001 300
-

U
nbraked trailer 68571574 5725 750
-

R
ecommended nose weight 5565656565
Technical data