2022 CITROEN C5 AIRCROSS catalytic converter

14
Instruments
There is a risk that the catalytic converter will be
destroyed.
Carry out (2) without fail.
Fixed.
The emission control system has a fault.
The warning lamp should go off when the engine
is started.
Carry out (3) quickly.
Collision Risk Alert/Active Safety BrakeFlashing.
The system is operating.
The vehicle brakes briefly so as to reduce the
speed of frontal collision with the vehicle ahead.
Fixed, accompanied by a message and
an audible signal.
The system has a fault.
Carry out (3).
Collision Risk Alert / Active Safety BrakeFixed, accompanied by the display of a
message.
The system has been deactivated, via the
vehicle configuration menu.
Active Lane Departure Warning SystemFixed.
The system has been automatically
deactivated or placed on standby.
Flashing.
You are about to cross a broken
lane marking without operating the direction
indicators. The system is activated, then corrects the
trajectory on the side of the lane marking
detected.
Fixed.
The system has a fault.
Carry out (3).
Lane positioning assistFixed, accompanied by the Service
warning lamp.
The system has a fault.
Carry out (3).
Dynamic stability control (DSC)/Anti-slip
regulation (ASR)
Fixed.
The system is deactivated.
The DSC/ASR system is reactivated
automatically when the vehicle is started, and
from around 31 mph (50
km/h).
Below 31 mph (50
km/h), you can reactivate it
manually.
Flashing.
The DSC/ASR adjustment is activated if
there is a loss of grip or trajectory.
Fixed.
The DSC/ASR system has a fault.
Carry out (3).
Emergency brake malfunction (with
electric parking brake)
Fixed, accompanied by the
message "Parking brake fault".
Emergency braking does not deliver optimal
performance. If automatic release is not available, use manual
release or carry out (3).
Hill start assistFixed, accompanied by the
message "Anti roll-back system
fault".
The system has a fault.
Carry out (3).
Under-inflationFixed, accompanied by an audible signal
and a message.
The pressure in one or more wheels is too low.
Check the pressure of the tyres as soon as
possible.
Reinitialise the detection system after adjusting
the pressure.
Under-inflation warning lamp
flashing then fixed and Service
warning lamp fixed.
The tyre pressure monitoring system is faulty.
Under-inflation detection is no longer monitored.
Check the tyre pressures as soon as possible
and carry out (3).
Diesel engine pre-heatingFixed.
The period of illumination depends on the
climatic conditions.
The ignition is on.
Wait until the warning lamp goes off before
starting.

98
Driving
automatically to preserve the remaining battery
charge.
Switching off the engine leads to a loss
of braking assistance.
Starting the engine
Parking brake applied:
► With a manual gearbox, place the gear lever
in neutral then depress the clutch pedal fully.
► With an automatic gearbox, place the gear
selector in mode N or P then depress the brake
pedal fully.
► 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,
pre-heating the catalytic converter can
cause clearly-felt engine vibrations when
stationary, with the engine running, for
anything up to two minutes (accelerated idle
speed).
If the outside temperature is high, let the
engine idle for 1 to 2 minutes after the
vehicle comes to a stop, to help it to cool.
Before setting off
Nose weight
► Distribute the load in the trailer so that the
heaviest items are as close as possible to the
axle and the nose weight (at the point where it
joins your vehicle) approaches the maximum
permitted without exceeding it.
Tyres
► Check the tyre pressures of the towing
vehicle and of the trailer , observing the
recommended pressures.
Lighting
► Check the electrical signalling on the trailer
and the headlamp beam height of your vehicle.
If a genuine CITROËN towing device is
used, the rear parking sensors will be
deactivated automatically to avoid the audible
signal.
When driving
Cooling
Towing a trailer uphill causes the coolant
temperature to increase. The maximum towable
load depends on the gradient and the exterior temperature. The fan’s cooling capacity does not
increase with engine speed.
►

Reduce speed and lower the engine speed to
limit the amount of heating produced.
In all cases, pay attention to the coolant
temperature.
If this warning lamp and the STOP
warning lamp come on, stop the
vehicle and switch off the engine as soon as
possible.
Brakes
Braking distances are increased when towing a
trailer. To avoid overheating the brakes, the use
of engine braking is recommended.
Side wind
Bear in mind that the vehicle will be more
susceptible to wind when towing.
Anti-theft protection
Electronic immobiliser
The keys include an electronic engine
immobiliser system, which secret code must be
recognised in order for starting to be possible.
If the system malfunctions, indicated by the
display of a message, the engine will not start.
Contact the CITROËN dealer.
Starting / Switching off the
engine with the key
Key ignition switch

It has 3 positions:
– position 1 (Stop): inserting and removing the
key, steering column locked.
–
position 2 (Ignition on) : steering column
unlocked, ignition on, Diesel preheating, engine
running,
–
position 3 (Starting).
Avoid attaching heavy objects to the key
or the remote control, which would weigh
down on its blade in the ignition switch and
could cause a malfunction.
Ignition on position
It allows the use of the vehicle's electric
equipment or portable devices to be charged.
Once the state of charge of the battery drops to
the reserve level, the system switches to energy
economy mode : the power supply is cut off

99
Driving
6automatically to preserve the remaining battery
charge.
Switching off the engine leads to a loss
of braking assistance.
Starting the engine
Parking brake applied:
► With a manual gearbox, place the gear lever
in neutral then depress the clutch pedal fully.
►

With an
automatic gearbox, place the gear
selector in mode N or P then depress the brake
pedal fully.
►

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,
pre-heating the catalytic converter can
cause clearly-felt engine vibrations when
stationary, with the engine running, for
anything up to two minutes (accelerated idle
speed).
► With a Diesel engine, turn the key to position
2, ignition on, to operate the engine pre-heating
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
several attempts, do not keep trying: you risk
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
► Stop the vehicle.
► With the engine running in 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.
►

Check that the parking brake is correctly
applied, particularly on sloping ground.
Never switch off the ignition before the
vehicle is at a complete stop. With the
engine off, the braking and steering
assistance systems are also cut off: risk of
loss of control of the vehicle.
When you leave the vehicle, keep the
key with you and lock the vehicle.
Energy economy mode
After switching off the engine (position 1 - Stop),
for a maximum of 30 minutes you can still
use functions such as the audio and telematic
system, the wipers, dipped beam headlamps,
courtesy lamps, etc.
For more information on Energy
economy mode, refer to the
corresponding section.
Key left in
If the key has been left in the ignition
switch at position 2 (Ignition on), the ignition

100
Driving
When the vehicle starts in electric mode,
it makes no noise.
Pay particular attention to pedestrians and
cyclists who may not hear the vehicle coming
despite the pedestrian horn.
Switching off
► Immobilise the vehicle.
► 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..
► For rechargeable hybrid vehicles, before
leaving the vehicle, check that the READY
indicator lamp is switched off.
In some circumstances, it is necessary to turn
the steering wheel to lock the steering column.
On certain versions with an automatic gearbox
(EAT6/EAT8), the steering column does not lock,
but the gearbox locks in mode P.
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.
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 the engine

► With a manual gearbox, place the gear lever
in neutral and depress the clutch pedal fully.
or
►

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 preheater warning lamp
is off.
If this warning lamp comes on after
pressing the " START/STOP" button:
►

Y

ou should keep the pedal fully depressed
and 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, you are alerted by a
message that it is necessary to turn the steering
wheel while pressing the " START/STOP" button,
to help unlock 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).
Starting rechargeable hybrid
vehicles
► Fully depress the brake pedal and press
the START/STOP button for approximately 2
seconds.
► Keep your foot on the pedal until this
indicator lamp comes on, indicating the
activation of the rechargeable hybrid system
(confirmed by an audible signal).
To exit Park mode, wait for the READY indicator lamp to come on.
By default, the system starts in Electric mode.
Depending on certain parameters (battery
charge level or outside temperature), the system
determines whether it is necessary to start the
petrol engine.
It is possible to change the driving mode at any
time using the mode selector.

153
Practical information
7





► To open the filler flap, press the flap opening
button or, with the vehicle unlocked, press
the upper rear corner of the filler flap facing
the ejector or the tactile marker, if present
(depending on version).
Rechargeable hybrid vehicles
After pressing the button, it may take a
few minutes for the filler flap to open.
If the flap becomes stuck, press and hold the
button for more than 3
seconds.
►

T

ake 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 it
and place it on its support on the filler flap
(depending on version).
►

Insert the filler nozzle and push it in as far as
possible before starting to refuel (to minimise the
risk of splashing).
►


Fill the tank.
Do not continue past the 3rd cut-off of the
nozzle; as this may cause malfunctions.
►

Put the filler cap back in place and turn it to
the right (depending on version).
►


Push the filler flap to close it.
The vehicle is fitted with a catalytic converter

,
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, allowing only
unleaded petrol nozzles to be inserted.
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.
Rechargeable hybrid vehicles
If the filler flap is accidentally closed
before refuelling, it cannot be opened
manually. Restart the engine and move the
vehicle a few metres before pressing the
filler
flap opening button again.
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.

173
Practical information
7Driving 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 essential 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.
Shock absorbers
It is not easy for drivers to detect when
shock absorbers are worn. Nevertheless,
the shock absorbers have a major impact on
road-holding and braking performance.
For your safety and driving comfort, it is
important to have them regularly checked by a
CITROËN dealer or a qualified workshop.
Timing and accessory kits
Timing and accessory kits are used from
the time the engine is started until it is
switched off. It is normal for them to wear over
time.
A
faulty timing or accessory kit can damage
the engine, rendering it unusable. Observe the recommended replacement frequency, stated in
distance travelled or time elapsed, whichever is
reached first.
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 combines 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 4,000
miles (6,500 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 is immobilised.
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 device
required by law prevents the engine from
being restarted.
If the SCR system is faulty, the level of
emissions from the vehicle will no longer meet
the Euro 6 standard and the vehicle starts
polluting the environment.
In the event of a confirmed SCR system
malfunction, it is essential to visit a CITROËN
dealer or a qualified workshop. After 685
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.
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.