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Practical information -> AdBlue? (BlueHDi) for Your Citroen C4 SUV Third Generation (2020-2025)

Practical information  
the Euro 6 standard and the vehicle starts  
Always mark the direction of rotation on the tyres  
that will be stored when fitting winter or summer  
tyres. Store them in a cool, dry place and away  
from direct exposure to the sun's rays.  
Winter or 4-seasons tyres can be  
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.  
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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.  
identified by this symbol on their  
sidewalls.  
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.  
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.  
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.  
The AdBlue® is contained in a special  
tank holding about 15 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.  
Timing and accessory kits  
The 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.  
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.  
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.  
For more information on the Warning  
and indicator lamps and the associated  
alerts, or the Indicators, please refer to the  
corresponding sections.  
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.  
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  
AdBlue® (BlueHDi)  
To respect the environment and ensure  
compliance with the Euro 6 standard, without  
adversely affecting the performance or fuel  
– Never dilute AdBlue® with water.  
You can obtain AdBlue® from a CITROËN dealer  
or a qualified workshop, as well as service  
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Practical information  
stations equipped with AdBlue® pumps specially  
designed for passenger vehicles.  
Store AdBlue® out of the reach of  
children, in its original container.  
key for the "Keyless Entry and Start"  
system into the passenger compartment.  
Switch on the ignition, then wait for 10  
seconds before starting the engine.  
Recommendations on storage  
Procedure  
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 so cannot be poured  
into the tank. Park the vehicle in a warmer area  
for a few hours to allow the top-up to be carried  
out.  
► Switch off the ignition and remove the key  
from the switch to switch off the engine.  
or  
► With Keyless Entry and Start, press the  
"START/STOP" button to switch off the engine.  
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.  
Never pour the AdBlue® into the Diesel  
fuel tank.  
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).  
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.  
► Turn the blue cap of the AdBlue® tank anti-  
clockwise and remove it.  
► 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: insert the nozzle and  
fill the tank until the nozzle automatically cuts  
out.  
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,  
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.  
unlocking the vehicle, inserting the key  
into the ignition switch, or bringing the  
176  
Practical information  
The system only registers AdBlue®  
intermediate top-ups of 5 litres or more.  
Within 5 seconds:  
With a manual gearbox and  
electric parking brake  
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► Depress and hold the brake pedal, then  
observe this order: switch off the engine and  
move the push selector forwards or backwards.  
► Release the brake pedal, then switch on the  
ignition.  
► Place your foot on the brake and press the  
electric parking brake control to release it.  
► Release the brake pedal, then switch off the  
ignition.  
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 10 litres.  
Top-up detection may not be instantaneous  
after addition. It may take a few minutes of  
driving before the top-up detection is effective.  
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To release them  
► With the engine running and while depressing  
the brake pedal, move the gear selector to the  
neutral position.  
► While depressing the brake pedal, switch off  
the engine.  
► Release the brake pedal, then switch on the  
ignition.  
► While depressing the brake pedal, press the  
control to release the parking brake.  
► Release the brake pedal, then switch off the  
ignition.  
A message is displayed on the  
instrument panel to confirm the unlocking  
of the wheels for 15 minutes.  
Changing to free-wheeling  
In certain situations, it is necessary to put the  
vehicle into free-wheeling mode (e.g. towing, on  
a rolling road, automatic car wash (Wash mode),  
rail or sea transport).  
After 15 minutes or reverting to normal  
operation  
► While depressing the brake pedal, restart the  
engine and select mode P.  
The procedure varies according to the type of  
gearbox and parking brake.  
Reverting to normal operation  
► While depressing the brake pedal, restart the  
engine and apply the parking brake.  
Advice on care and  
maintenance  
Never leave the vehicle unattended with  
the vehicle into free-wheeling mode.  
With EAT8 automatic  
gearbox or drive selector  
and electric parking brake  
/
Keyless Entry and Start  
General recommendations  
Observe the following recommendations to avoid  
damaging the vehicle.  
You must not depress the brake pedal  
while switching the ignition on again, then  
switching it off. If you do, the engine will start,  
requiring you to restart the procedure.  
Release procedure  
► With the vehicle stationary and the engine  
running, depress the brake pedal and select  
mode N.  
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