2021 CITROEN C3 AIRCROSS catalytic converter

9
Instruments
1If a warning lamp remains lit
The references (1), (2) and (3) in the warning
and indicator lamp description indicate whether
you should contact a qualified professional in
addition to the immediate recommended actions.
(1): You must stop the vehicle.
Stop as soon as it is safe to do so and switch off
the ignition.
(2): Contact a CITROËN dealer or a qualified
workshop.
(3): Visit a CITROËN dealer or a qualified
workshop.
List of warning and
indicator lamps
Red warning/indicator lamps
STOP
Fixed, associated with another warning lamp, accompanied by the display of a
message and an audible signal.
A serious fault with the engine, braking system,
power steering or a major electrical fault has
been detected.
Carry out (1) and then (2).
Parking brakeFixed.The parking brake is applied or not
properly released.
BrakingFixed.The brake fluid level in the braking circuit
has dropped significantly.
Carry out (1), then top up with fluid that complies
with the manufacturer's recommendations. If the
problem persists, carry out (2).
Fixed.The electronic brake force distribution (EBFD) system is faulty.Carry out (1) and then (2).
Door(s) openFixed, associated with a message identifying the access.
A door or the tailgate is not properly closed
(speed less than 6 mph (10 km/h)).
Fixed, associated with a message identifying the access, accompanied by
an audible signal.
A door or the tailgate is not properly closed
(speed above 6 mph (10 km/h)).
Seat belts not fastened / unfastened
Fixed or flashing, accompanied by an increasing audible signal.
A seat belt has not been fastened or has been
unfastened.
12 V battery chargeFixed.
The battery charging circuit has a fault
(dirty terminals, slack or cut alternator belt, etc.). Clean and retighten the terminals. If the warning
lamp does not go off when the engine is started,
carry out (2).
Engine oil pressureFixed.There is a fault with the engine lubrication
system.
Carry out (1) and then (2).
Maximum engine coolant temperatureFixed.The temperature of the cooling system is
too high.
Carry out (1), then wait until the engine has
cooled down before topping up the level, if
necessary. If the problem persists, carry out (2).
Engine self-diagnostics systemFixed.A major engine fault has been
detected.
Carry out (1) and then (2).
Orange warning/indicator lamps
Engine self-diagnostics system
Fixed.A minor engine fault has been
detected.
Carry out (3).
Flashing.The engine management system has a
fault.
There is a risk that the catalytic converter will be
destroyed.

88
Driving
automatically to preserve the remaining battery
charge.
Starting the engine
With the parking brake applied:► With a manual gearbox, place the gear lever
in neutral then fully depress the clutch pedal.
► With an automatic gearbox, place the gear
selector in mode N or P then fully depress the
brake pedal.
► Insert the key into the ignition switch; the system recognises the code.► Unlock the steering column by simultaneously turning the steering wheel and the key.
In certain cases, you may have to apply
significant force to move the steering
wheel (wheels on full lock, for example).
► With a petrol engine , operate the starter
motor by turning the key to position 3 without
pressing the accelerator pedal, until the engine
starts. Once the engine starts, release the key.
With petrol engines , after a cold start,
preheating the catalytic converter can
cause noticeable engine vibrations for anything up to 2 minutes while stationary with
the engine running (accelerated idle speed).
► With a Diesel engine, turn the key to position
2, ignition on, to operate the engine preheating
system.
Wait until this warning lamp goes off in the instrument panel, then operate the starter
motor by turning the key to position 3 without
pressing the accelerator pedal, until the engine
starts. Once the engine starts, release the key.
In wintry conditions, the warning lamp
may stay on for a longer period. When
the engine is hot, the warning lamp does not
come on.
If the engine does not start straight away,
switch off the ignition. Wait a few
seconds before operating the starter motor
again. If the engine does not start after a few
attempts, do not keep trying - risk of
damaging the starter motor and the engine.
Contact a CITROËN dealer or a qualified
workshop.
In mild conditions, do not leave the
engine at idle to warm up but move off
straight away and drive at moderate speed.
Switching off the engine
► Immobilise the vehicle.► With the engine at idle, turn the key to position 1.► Remove the key from the ignition switch.► To lock the steering column, turn the steering wheel until it locks.
To facilitate unlocking of the steering
column, it is recommended that the
wheels be returned to the straight ahead
position before switching off the engine.
Never switch off the ignition before the
complete immobilisation of the vehicle.
With the engine off, the braking and steering
assistance systems are also cut off - risk of
loss of control of the vehicle!
Check that the parking brake is correctly
applied, particularly on sloping ground.
When leaving the vehicle, keep the key in
your possession and lock the vehicle.
Energy economy mode
After the engine has stopped (position 1. Stop),
for a maximum combined duration of about thirty
minutes, you can still use functions such as the
audio and telematics system, courtesy lamps,
windscreen wipers, dipped beam headlamps,
etc.
For more information on Energy
economy mode, refer to the
corresponding section.
Key left in
When opening the driver's door, an alert
message is displayed, accompanied by an
audible signal, to remind you that the key is still in the ignition switch at position 1 (Stop).
If the key has been left in the ignition switch
at position 2 (Ignition on) , the ignition will be
switched off automatically after one hour.
To switch the ignition back on, turn the key
to position 1 (Stop), then back to position 2
(Ignition on) .
Starting / Switching off the
engine with Keyless Entry
and Starting
The electronic key must be present in the
passenger compartment.
If it is not detected, a message is displayed.
Move the electronic key so that the engine
can be started or switched off.
If there is still a problem, refer to the "Key
not detected - Back-up starting or Back-up
switch-off" section.

89
Driving
6audible signal, to remind you that the key is
still in the ignition switch at position 1 (Stop).
If the key has been left in the ignition switch
at position 2 (Ignition on) , the ignition will be
switched off automatically after one hour.
To switch the ignition back on, turn the key
to position 1 (Stop), then back to position 2
(Ignition on) .
Starting / Switching off the
engine with Keyless Entry
and Starting
The electronic key must be present in the
passenger compartment.
If it is not detected, a message is displayed.
Move the electronic key so that the engine
can be started or switched off.
If there is still a problem, refer to the "Key
not detected - Back-up starting or Back-up
switch-off" section.
Starting

► With a manual gearbox, place the gear lever
in neutral and fully depress the clutch pedal.
► With an automatic gearbox, select mode P or N and press the brake pedal.

► Press the "START/STOP" button while
maintaining pressure on the pedal until the
engine starts.
For Diesel engines, when the temperature is
below zero and/or the engine is cold, starting will
only occur once the preheating warning lamp is
off.
If this warning lamp comes on after pressing the " START/STOP" button:► Keep the pedal fully depressed and do not press the "START/STOP" button again until the
engine is running.
If one of the starting conditions is not met, a
message is displayed.
In some circumstances, a message indicates
that it is necessary to turn the steering wheel
while pressing the " START/STOP" button to
assist unlocking of the steering column.
With petrol engines , after a cold start,
preheating the catalytic converter can
cause noticeable engine vibrations for
anything up to 2 minutes while stationary with
the engine running (accelerated idle speed).
Switching off
► Immobilise the vehicle, with the engine at idle.► With a manual gearbox, ideally put the gear
lever into neutral.
► With an automatic gearbox, ideally select mode P or N.► Press the "START/STOP" button..
In some circumstances, it is necessary to turn
the steering wheel to lock the steering column.
If the vehicle is not immobilised, the
engine will not switch off.
With the engine off, the braking and
steering assistance systems are also cut
off - risk of loss of control of the vehicle!
Never leave your vehicle with the
electronic key still inside.

124
Practical information
► With the vehicle unlocked, press the rear-central part of the filler flap to open it.► Take care to select the pump that delivers the correct fuel type for the vehicle's engine (see a
reminder label on the inside of the filler flap).
► Turn the filler cap to the left.

► Remove the filler cap and hang it on its carrier (on the filler flap).► Introduce the filler nozzle and push it in as far as possible before starting to refuel (risk of
blowback).
► Fill the tank.Do not continue past the third cut-off of the
nozzle, as this may cause malfunctions.
► Refit the filler cap.► Turn it to the right.► Push the filler flap to close it.
If you have put in the wrong fuel for the
vehicle, you must have the fuel tank
drained and filled with the correct fuel before
starting the engine. The vehicle is fitted with a catalytic converter, a
device which helps to reduce the level of harmful
emissions in the exhaust gases.
For petrol engines, you must use unleaded
fuel.
The filler neck is narrower, admitting unleaded
petrol nozzles only.
Fuel cut-off
Your vehicle is equipped with a safety device
which cuts off the fuel supply in the event of a
collision.
Misfuel prevention (Diesel)
(Depending on country of sale.)
This mechanical device prevents filling the tank
of a Diesel vehicle with petrol.
Located in the filler neck, the misfuel prevention
device is visible when the filler cap is removed.
Operation

When a petrol filler nozzle is inserted into the
fuel filler neck of a Diesel vehicle, it comes into
contact with the flap. The system remains closed
and prevents filling.
Do not persist but introduce a Diesel type
filler nozzle.
It remains possible to use a fuel jerrycan
to fill the tank.
Travelling abroad
As Diesel fuel pump nozzles may be
different in other countries, the presence
of the misfuel prevention device may make
refuelling impossible.
Before travelling abroad, it is advisable to
check with a CITROËN dealer if the vehicle is
suitable for the distribution equipment of the
countries visited.
Snow chains
In wintry conditions, snow chains improve
traction as well as the behaviour of the vehicle
when braking.
The snow chains must be fitted only to the front wheels. They must never be
fitted to "space-saver" type spare wheels.
Take account of the legislation specific to each country on the use of snow chains
and the maximum authorised speed.
Use only the chains designed to be fitted to the type of wheel fitted to the vehicle:
Original tyre size Chain types
195/65 R15
Maximum 9 mm link
195/60 R16
205/60 R16 Cannot be fitted with
chains
215/50 R17
For more information on snow chains, contact a
CITROËN dealer or a qualified workshop.
Installation tips
► To fit the chains during a journey, stop the vehicle on a flat surface on the side of the road.► Apply the parking brake and position any wheel chocks under the wheels to prevent
movement of the vehicle.
► Fit the chains following the instructions provided by the manufacturer.► Move off gently and drive for a few moments, without exceeding 31 mph (50 km/h).► Stop the vehicle and check that the snow chains are correctly tightened.
It is strongly recommended that before
you leave, you practise fitting the snow
chains on a level and dry surface.
Avoid driving with snow chains on roads that have been cleared of snow to avoid
damaging the vehicle's tyres and the road

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.