2021 CITROEN C3 AIRCROSS lock

126
Practical information
– the green mark on the star wheel is in line
with the white mark on the ball joint,
– the locking wheel is in contact with the towball (position A),– the security key lock is on and the key removed; the locking wheel can no longer be
operated,
– the towball must not be able to move in its carrier; test by shaking it with your hand.
If the towball is not locked, the trailer can
detach - accident risk!
During use
Never release the locking system with a
trailer or load carrier on the towball.
Never exceed the maximum authorised
weight for the vehicle - the Gross Train
Weight or GTW.
It is essential that the maximum authorised
load be complied with on the towing device:
if it is exceeded, this device may detach from
the vehicle, which is a serious accident risk.
Check that the trailer lamps work correctly.
Before setting off, check the adjustment of the
headlamp beam height.
For more information on Headlamp
adjustment, refer to the corresponding
section.
Following use
When travelling without a trailer or load
on a towbar-mounted carrier, the towball
must be removed and the protective plug
inserted in the carrier. This measure applies
particularly where the towball might obscure
visibility of the number plate or its lighting.
Fitting the towball

► Below the rear bumper , remove the protective plug 2 from the towball carrier 1.

► Insert the end of towball 5 into carrier 1 and
push it upwards; the locking will take place
automatically.


► The locking wheel 6 turns a quarter of a turn
anti-clockwise ; take care to keep your hands
clear!


► Check that the mechanism has correctly locked into place and that the green mark on the
star wheel is in line with the white mark on the
towball (position A).
► Close the lock 7 using the key.

127
Practical information
7► Always remove the key. The key cannot be removed when the lock is open.► Clip the cap onto the lock.

► Remove the protective cover from the towball.► Attach the trailer to the towball.► Attach the cable on the trailer to the safety eye 4 on the carrier.► Tilt the trailer harness socket 3 forwards to
place it in position.
► Insert the trailer plug and give it a quarter turn to connect it to socket 3 of the carrier.
Removing the towball

► Give a quarter turn and pull the trailer plug to disconnect it from socket 3 of the carrier.► Tilt the trailer harness socket 3 to the left to
stow it away.
► Detach the cable on the trailer from the safety eye 4 on the carrier.► Detach the trailer from the towball.► Refit the protective cover to the towball.

► Remove the cap from the lock.► Insert the key into the lock 7.► Open the lock using the key .
► Hold towball 5 firmly in one hand; using the
other hand, pull and turn locking wheel 6 fully in
a clockwise direction; do not release the locking
wheel.


► Extract the towball from the bottom of its carrier 1.► Release the locking wheel; this automatically stops in the unlocked position and check that the
red mark on the locking wheel is in line with the
white mark on the towball (position B).

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Practical information
► Remove the roof bars once they are no longer needed.
Maximum load, distributed over the roof
bars, for a loading height not exceeding
40 cm:
– without longitudinal bars: 50 kg,– with longitudinal bars: 45 kg.
As this value may change, please verify the
maximum load quoted on the note supplied
with the roof bars.
If the height exceeds 40 cm, adapt the
speed of the vehicle to the profile of the road
to avoid damaging the roof bars and the
mountings on the vehicle.
Be sure to refer to national legislation in order
to comply with the regulations for transporting
objects which are longer than the vehicle.
Bonnet
Stop & Start
Before doing anything under the bonnet,
you must switch off the ignition to avoid any
risk of injury resulting from an automatic
change to START mode.
The location of the interior bonnet release lever prevents the bonnet being
opened when the left-hand front door is
closed.
When the engine is hot, handle the
exterior safety catch and the bonnet stay
with care (risk of burns), using the protected
area.
When the bonnet is open, take care not to
damage the safety catch.
Do not open the bonnet under very windy
conditions.
Cooling of the engine when stopped
The engine cooling fan may start after
the engine has been switched off.
Take care with objects or clothing that
could be caught in the blades of the fan!
Opening


► Open the left-hand front door .
► Pull the interior release lever, located at the bottom of the door frame, towards you.

► Tilt the safety catch to the left and raise the bonnet.

► Unclip the stay from its housing and place it in the support slot to hold the bonnet open.
Closing
► Hold the bonnet and pull out the stay from the support slot.
► Clip the stay in its housing.► Lower the bonnet and release it near the end of its travel.► Pull on the bonnet to check that it is locked correctly.
Because of the presence of electrical
equipment under the bonnet, it is strongly
recommended that exposure to water (rain,
washing, etc.) be limited.
Engine compartment
The engine represented is an example given for
illustration purposes only.
The locations of the following elements may
vary:
– Air filter.– Engine oil dipstick.– Engine oil filler cap.– Priming pump.
* Depending on engine.

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Practical information
7► Clip the stay in its housing.► Lower the bonnet and release it near the end of its travel.► Pull on the bonnet to check that it is locked correctly.
Because of the presence of electrical
equipment under the bonnet, it is strongly
recommended that exposure to water (rain,
washing, etc.) be limited.
Engine compartment
The engine represented is an example given for
illustration purposes only.
The locations of the following elements may
vary:
– Air filter.– Engine oil dipstick.– Engine oil filler cap.– Priming pump.
* Depending on engine.
Petrol engine

Diesel engine

1. Screenwash fluid reservoir
2. Engine coolant reservoir
3. Brake fluid reservoir
4. Battery
5. Remote earth point (-)
6. Fusebox
7. Air filter
8. Engine oil filler cap
9.Engine oil dipstick
10. Priming pump *
The Diesel fuel system operates under
very high pressure.
All work on this circuit must be carried out
only by a CITROËN dealer or a qualified
workshop.
Checking levels
Check all of the following levels regularly in
accordance with the manufacturer's service
schedule. Top them up if required, unless
otherwise indicated.
If a level drops significantly, have the
corresponding system checked by a CITROËN
dealer or a qualified workshop.
The fluids must comply with the manufacturer's requirements and with
the vehicle's engine.
Take care when working under the bonnet, as certain areas of the engine
may be extremely hot (risk of burns) and the
cooling fan could start at any time (even with
the ignition off).

135
Practical information
7Wheels and tyres
The inflation pressure of all tyres, including the spare wheel, must be
checked on "cold” tyres.
The pressures indicated on the tyre pressure
label are valid for "cold" tyres. If you have driven
for more than 10 minutes or more than 6 miles
(10 kilometres) at over 31 mph (50 km/h), add 0.3 bar (30 kPa) to the values indicated on the
label.
Under-inflation increases fuel
consumption. Non-compliant tyre
pressure causes premature wear on tyres and
has an adverse effect on the vehicle's road
holding - risk of an accident!
Driving with worn or damaged tyres reduces the
braking and road holding performance of the
vehicle. It is recommended to regularly check the
condition of the tyres (tread and sidewalls) and
wheel rims as well as the presence of the valves.
When the wear indicators no longer appear set
back from the tread, the depth of the grooves is
less than 1.6 mm; it is imperative to replace the
tyres.
Using different size wheels and tyres from those
specified can affect the lifetime of tyres, wheel
rotation, ground clearance, the speedometer
reading and have an adverse effect on road
holding.
Fitting different tyres on the front and rear axles
can cause the ESC to mistime.
AdBlue® (BlueHDi)

To respect the environment and ensure
compliance with the Euro 6 standard, without
adversely affecting the performance or fuel
consumption of its Diesel engines, CITROËN
has taken the decision to equip its vehicles
with a system that associates SCR (Selective
Catalytic Reduction) with a Diesel Particle Filter
(DPF) for the treatment of exhaust gases.
SCR System
Using a liquid called AdBlue® that contains
urea, a catalytic converter turns up to 85% of
the nitrogen oxides (NOx) into nitrogen and
water, which are harmless to health and the
environment.
The AdBlue® is contained in a special
tank holding about 17 litres.
Its capacity allows a driving range of
approximately 5,600 miles (9,000 km), which
may vary considerably depending on your
driving style.
An alert system is triggered once the reserve
level is reached: it is then possible to drive for a
further 1,500 miles (2,400 km) before the tank is empty and the vehicle blocked.
If the estimated distance travelled by the vehicle
between two services is greater than 12,500
miles (20,000 km), it will be necessary to top up
the AdBlue.
For more information on the Warning
and indicator lamps and the associated
alerts, or the Indicators, please refer to the
corresponding sections.
Once the AdBlue® tank is empty, a
system required by legislation prevents
starting of the engine.
If the SCR system is faulty, the level of
emissions from the vehicle will no longer meet
the Euro 6 standard: the vehicle becomes
polluting.
In the event of a confirmed SCR system
malfunction, it is essential to visit a CITROËN
dealer or a qualified workshop. After 680
miles (1,100 km), a device is automatically
activated to prevent the engine from starting.
In both cases, a range indicator indicates
the distance that can be travelled before the
vehicle is stopped.

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Practical information
Freezing of the AdBlue®
AdBlue® freezes at temperatures below
around -11°C.
The SCR system includes a heater for the
AdBlue
® tank, allowing you to continue driving
in very cold conditions.
Supply of AdBlue®
It is recommended that the AdBlue® be topped
up as soon as the first alert is issued indicating
that the reserve level has been reached.
For the correct operation of the SCR
system:
– Use only AdBlue® fluid that meets the ISO
22241 standard.
– Never transfer AdBlue® to another container
as it would lose its purity.
– Never dilute AdBlue® with water.
It is possible to obtain AdBlue
® from a CITROËN
dealer or a qualified workshop.
You can also visit a service station equipped with AdBlue® pumps specially
designed for passenger vehicles.
Never top up from an AdBlue® dispenser
reserved for heavy goods vehicles.
Recommendations on storage
AdBlue® freezes at about -11°C and deteriorates
above +25°C. Containers should be stored in a
cool area and protected from direct sunlight.
Under these conditions, the fluid can be kept for
at least a year.
If the fluid has frozen, it can be used once it has
completely thawed out at room temperature.
Never store AdBlue® containers in your
vehicle.
Precautions for use
AdBlue® is a urea-based solution. This fluid is
non-flammable, colourless and odourless (when
kept in a cool place).
In the event of contact with the skin, wash the
affected area with soap and running water. In the
event of contact with the eyes, immediately rinse
the eyes with large amounts of water or with an
eye wash solution for at least 15 minutes. Seek
medical attention if you feel a persistent burning
sensation or irritation.
If swallowed, immediately wash out the mouth
with clean water and then drink plenty of water.
In certain conditions (high temperature, for
example), the risk of release of ammonia cannot
be excluded: do not inhale the fluid. Ammonia
vapours have an irritant effect on mucous
membranes (eyes, nose and throat).
Store AdBlue® out of the reach of
children, in its original container.
Procedure
Before starting the top-up procedure, ensure that
the vehicle is parked on a flat and level surface.
In wintry conditions, ensure that the temperature
of the vehicle is above -11 °C. Otherwise, the AdBlue® may be frozen and therefore cannot
be poured into its tank. Park your vehicle in a
warmer area for a few hours to allow the top-up
to be carried out.
Never pour AdBlue® into the Diesel fuel
tank.
If any AdBlue® is splashed, or if there are
any spillages on the bodywork, rinse
immediately with cold water or wipe with a
damp cloth.
If the fluid has crystallised, clean it off using a
sponge and hot water.
Important: in the event of a top-up after
a breakdown because of a lack of
AdBlue, it is essential to wait around 5
minutes before switching on the ignition,
without opening the driver’s door,
unlocking the vehicle, introducing the key
into the ignition switch, or introducing the
key of the “Keyless Entry and Starting ” system into the passenger compartment .
Switch on the ignition, then wait for 10
seconds before starting the engine.
► Switch off the ignition and remove the key from the switch to switch off the engine.
or
► With Keyless Entry and Starting, press the "START/STOP" button to switch off the engine.

► With the vehicle unlocked and the fuel filler flap open, turn the blue cap of the AdBlue® tank
a quarter turn anti-clockwise.
Filling up
► With a container of AdBlue®: after checking
the expiry date, read the instructions on the
label carefully before pouring the contents of the
container into the vehicle's AdBlue tank.► With an AdBlue® pump: introduce the nozzle
and fill the tank until the nozzle automatically
cuts out.
In order not to overfill the AdBlue® tank:
– Add between 10 and 13 litres using AdBlue® containers.

137
Practical information
7► Switch off the ignition and remove the key from the switch to switch off the engine.
or
► With Keyless Entry and Starting, press the "START/STOP" button to switch off the engine.

► With the vehicle unlocked and the fuel filler flap open, turn the blue cap of the AdBlue® tank
a quarter turn anti-clockwise.
Filling up
► With a container of AdBlue®: after checking
the expiry date, read the instructions on the
label carefully before pouring the contents of the
container into the vehicle's AdBlue tank.► With an AdBlue® pump: introduce the nozzle
and fill the tank until the nozzle automatically
cuts out.
In order not to overfill the AdBlue® tank:
– Add between 10 and 13 litres using AdBlue® containers.
– Stop after the nozzle’ s first automatic cut-out, if you are refilling at a service station.
The system only registers AdBlue® top-ups of 5 litres or more.
If the AdBlue® tank is completely empty
– which is confirmed by the message
"Top up AdBlue: Starting impossible" – it is essential to add at least 5 litres.
After refilling
► Perform the same sequence of operations in reverse order.
Do not dispose of AdBlue® containers in
the household waste.
Place them in a container reserved for this
purpose or take them back to where you
purchased them.
Advice on care and
maintenance
General recommendations
Observe the following recommendations to avoid
damaging your vehicle.
Exterior
Never use a high-pressure jet wash in
the engine compartment, due to the risk
of damaging electrical components.
Do not wash the vehicle in strong sunshine or
extremely cold conditions.
When washing the vehicle at an
automatic roller-brush car wash, be sure
to lock the doors and, depending on version,
remove the electronic key and deactivate the
“hands-free” function (“Hands-Free Tailgate
Access”).
When using a pressure washer, hold the
lance at least 30 cm from the vehicle
(particularly when cleaning areas containing
chipped paint, sensors or seals).
Promptly clean up any stains containing
chemicals liable to damage the vehicle's paint
(including tree resin, bird droppings, insect
secretions, pollen and tar).
If justified by the environment, clean the
vehicle more frequently to remove salty
deposits (in coastal areas), soot (in industrial
estates) and mud (in wet or cold areas).
These substances can be highly corrosive.
Contact a CITROËN dealer or a qualified
workshop if you require advice on removing
stubborn stains requiring special products
(such as tar or insect removers).

143
In the event of a breakdown
8The tyre inflation pressures are given on this label.


► Start the compressor by placing the switch at position " I" and adjust the pressure to the value
shown on the vehicle's tyre pressure label. To
deflate: press the black button located on the
compressor pipe, near the valve connection.
If after 7 minutes the pressure of 2 bar is
not reached, the tyre is damaged;
contact a CITROËN dealer or a qualified
workshop for assistance.
► Once the correct pressure is reached, put the switch in position " O".► Remove the kit and stow it.
Should the pressure of one or more tyres
be adjusted, it is necessary to reinitialise
the under-inflation detection system.
For more information on Tyre under-inflation
detection, refer to the corresponding section.
Spare wheel
Scan the QR Code on page 3 to view
explanatory videos.
For more information on the Tool kit,
refer to the corresponding section.
Access to the spare wheel

The spare wheel is installed in the boot, under
the floor.
Removing the spare wheel

► Unclip and remove the tool storage box or remove the polystyrene cover (depending on
version).
► Slacken the central nut.► Remove the fastening device (nut and bolt).► Lift the spare wheel towards you from the rear.► Take the wheel out of the boot.
Removing a wheel
Parking the vehicle
Immobilise the vehicle where it does
not obstruct traffic: the ground must be level,
stable and non-slippery.
With a manual gearbox, engage first gear
to lock the wheels, apply the parking brake,
unless it is programmed to be in automatic
mode, and switch off the ignition.