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Practical information -> AdBlue? (BlueHDi) for Your Citroen C4 Cactus SUV Second Generation (2018-2024)

Practical information  
the vehicle's road holding - risk of an  
accident!  
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.  
In both cases, a range indicator indicates  
the distance that can be travelled before the  
vehicle is stopped.  
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.  
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.  
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®  
Fitting different tyres on the front and rear axles  
can cause the ESC to mistime.  
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 more information on the Warning  
and indicator lamps and the associated  
alerts, or the Indicators, please refer to the  
corresponding sections.  
AdBlue® (BlueHDi)  
To respect the environment and ensure  
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.  
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.  
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.  
It is possible to obtain AdBlue® from a CITROËN  
dealer or a qualified workshop.  
SCR System  
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.  
You can also visit a service station  
equipped with AdBlue® pumps specially  
designed for passenger vehicles.  
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.  
Never top up from an AdBlue® dispenser  
reserved for heavy goods vehicles.  
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Practical information  
Storage recommendations  
Procedure  
► 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.  
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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.  
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.  
If the fluid has frozen, it can be used once it has  
completely thawed out in the ambient air.  
Never store AdBlue® containers in your  
vehicle.  
Never pour AdBlue® into the Diesel fuel  
tank.  
► With the vehicle unlocked and the fuel filler  
flap open, turn the blue cap of the AdBlue® tank  
anti-clockwise and remove it.  
► With a bottle or container of AdBlue®: after  
checking the expiry date, read the instructions  
on the label carefully before pouring the contents  
into the vehicle's AdBlue tank.  
► With an AdBlue® pump: introduce the nozzle  
and fill the tank until the nozzle automatically  
cuts out.  
Precautions for use  
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.  
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).  
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.  
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  
Store AdBlue® out of the reach of  
children, in its original container.  
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