2021 CITROEN C4 AIRCROSS ECU

179
Fitting a wheel
After changing a wheel
When using the "space-saver" spare
wheel, do not exceed a speed of
50 mph (80 km/h).
Have the tightening of the bolts and the
pressure of the spare wheel checked
by a CITROËN dealer or a qualified
workshop without delay.
Have the punctured wheel repaired and
replace it on the vehicle as soon as
possible.
List of operations
F Put the wheel in place on the hub.
F S crew in the bolts fully by hand.
F

P
re-tighten the security bolt using the
wheelbrace 1 fitted with the security
socket
5

(if your vehicle is equipped with
security wheel bolts).
F

P
re-tighten the other bolts using the
wheelbrace 1 o n l y.
Fitting snow tyres
If you equip your vehicle with snow
tyres fitted on steel wheel rims, special
bolts available from your CITROËN
dealer or a qualified workshop must
be used.
If the replacement of a tyre is
necessary on 4-wheel drive versions,
it is recommended that all four tyres be
replaced at the same time, ensuring
that the same make, model and size is
used on all wheels.
This is because using tyres of different
sizes, structure or rate of wear could
damage transmission components.
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Practical information

180
F Lower the vehicle fully.
F F old the jack 2 and detach it. F
T ighten the security bolt using the
wheelbrace 1 fitted with the security
socket
5

(if your vehicle is equipped with
security wheel bolts).
F

T
ighten the other bolts using the
wheelbrace 1 o n l y.
F

S
tore the tools (refer to the paragraph
"Access to the tools").
Practical information

194
12 V battery
The battery is located under the bonnet.
To gain access to it:
F
o
pen the bonnet using the interior release
lever, then the exterior safety catch,
F

s
ecure the bonnet stay,
Access to the battery
Procedure for charging your battery when it is flat or for starting the engine using another battery and jump leads.
F
r
emove the retaining pins A,
F

r
emove the protective cover B,F

r
emove the retaining pins C,
F

r
emove the air duct D.
Practical information

204
accessories
A wide range of accessories and genuine parts is available from the CITROËN dealer network.
These accessories and parts are all suitable for your vehicle and benefit from CITROËN's recommendation and warranty.
"Comfort":
front and rear parking sensors, smoker's
kit, coat hanger on head restraint, insulated
module, aluminium footrest, reading lamp,
portable scented air freshener, air deflectors,
sun blinds...
"Transport solutions":
towbar with quickly detachable ball, roof bars,
boot liner, boot spacers, bicycle carrier for roof
bars, ski carrier, canoe carrier, rigid roof boxes,
flexible roof boxes, boot net...
"St yle":
16 inch alloy wheels, 18 inch alloy wheels,
chromed door handle shells, chromed mirror
shells, front spoiler, brushed aluminium interior
trim kit, gloss black interior trim kit, parking
brake lever trim, aluminium gear knob...
"Security and safety":
anti-intrusion alarm, warning triangle, high
visibility vest, breathalyser, first aid kit, snow
chains, anti-slip covers, wheel security bolts,
child seats, fire extinguisher, foglamp kit,
dog guard, stolen vehicle tracking system,
accessories for pets (seat belts, seat and boot
protectors, cage)...
"Protection":
mat*, boot carpet, side protective mouldings,
door sill protectors, boot sill protector, vehicle
cover, front and rear bumper protective
mouldings...
Conversion kits
You can obtain an "Enterprise" kit to convert a
trade vehicle to a private car and vice-versa.If a towbar and its harness is fitted
outside the CITROËN dealer network,
this must be done in line with the
manufacturer's instructions.
* T o prevent any risk of jamming of the
pedals:
-

e
nsure that the mat is positioned and
secured correctly,
-

n
ever fit one mat on top of another.
Practical information

207
bonnet
F Open the right hand front door.
F P ull the interior bonnet release lever A ,
located at the bottom of the door aperture. Do not open the bonnet in high winds.
When the engine is hot, handle the
exterior safety catch and the bonnet
stay with care (risk of burns).
F
U
nclip the stay C from its housing on the
back of the bonnet.
F

F
ix the stay in the notch to hold the bonnet
open.ClosingF Take the stay out of the support notch.
F C lip the stay in its housing on the back of
the bonnet.
F

L
ower the bonnet and release it at the end
of its travel.
F

P
ull on the bonnet to check that it is
secured correctly. The location of the interior bonnet
release lever prevents opening of the
bonnet while the right hand front door
is closed.
Opening
F Push the exterior safety catch B to the left
and raise the bonnet. This message appears in the instrument panel
screen if the bonnet is not fully closed.
The cooling fan may star t after
switching off the engine: take care
with articles and clothing that might
become caught by the fan blades.
be

cause of the presence of electrical
equipment under the bonnet, it is
recommended that exposure to water
(rain, washing, ...) be limited.
8
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

175
7
Practical information
C4-Aircross-add_en_Chap07_info-pratiques_ed01-2015
Changing a wheel
The tools are stowed in the boot under the floor. To gain access to them:  Open the boot.  Lift and remove the boot floor.
Access to the vehicle's tools
List of tools
These tools are specific to your vehicle. Do not use them for anything else. 1. Wheelbrace. Used to remove the wheel trim and the wheel fixing bolts. 2. Jack. Used to raise the vehicle. 3. Handle. Used to operate the jack. 4. Removable towing eye. See "Recovering the vehicle".
5. Socket for security wheel bolts (available as an accessory). Used to adapt the wheelbrace to the special "security" wheel bolts.
Procedure for replacing a faulty wheel with the spare wheel using the tools supplied with the vehicle.
The jack must only be used to change a wheel with a damaged tyre. The jack does not require any maintenance.
The jack meets the European standard as defined in Directive 2006/42/CE on machinery. The declaration of conformity can be found at the end of this document. The name and complete address of the manufacturer or, as appropriate, their representative, together with the designation of the jack are given in this certificate of conformity.

177
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Practical information
C4-Aircross-add_en_Chap07_info-pratiques_ed01-2015
Removing a wheel
Parking the vehicle
Immobilise the vehicle where it does not block traffic; the ground must be level, stable and not slippery. Apply the parking brake, switch off the ignition and engage first gear to block the wheels. Never go underneath a vehicle raised using a jack; use an axle stand.
List of operations
 If your vehicle has security bolts (available as an accessory), fit the security bolt socket 5 to the wheelbrace 1 to slacken the security bolt.  Slacken the other bolts using the wheelbrace 1 o n l y.
Never use a jack other than the one provided by the manufacturer.
 Place the foot of the jack 2 on the ground and ensue that it is directly below the front A or rear B jacking point provided on the underbody, whichever is closest to the wheel to be changed.
Wheel with trim
When removing the wheel , remove the trim first using the handle 3 , pulling at the cutout. When refitting the wheel , refit the trim starting by placing its cutout opposite the valve and press on its outer edge with the palm of your hand.