Get Practical information -> AdBlue? additive and SCR system Guide for Citroen C4 SUV Second Generation (2010-2018)

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AdBlue^®additive and SCR system

for BlueHDi Diesel engines

To assure respect for the environment and

conformity with the new Euro 6 emissions

standard, without adversely affecting the

performance or fuel consumption of Diesel

engines, CITROËN has taken the decision to

equip its vehicles with an effective system that

associates SCR (Selective Catalytic Reduction)

with a particle filter (FAP) for the treatment of

exhaust gases.

The AdBlue^®additive is held in a special

Once the AdBlue^®tank is empty, a

system required by regulations prevents

starting of the engine.

If the SCR is faulty, the level of

emissions from your vehicle will no

longer meet the Euro 6 standard: your

vehicle becomes polluting.

In the event of a confirmed fault

with the SCR system, you must go

to a CITROËN dealer or a qualified

workshop as soon as possible: after

a running distance of 650 miles

(1 100 km), a system will be triggered

automatically to prevent engine starting.

tank located under the boot at the rear of

the vehicle. It has a capacity of 17 litres: this

provides a driving range of about 12 500 miles

(20 000 km), after which an alert is triggered

warning you when the reserve remaining is

enough for just 1 500 miles (2 400 km).

During each scheduled service of your vehicle

by a CITROËN dealer or a qualified workshop,

the AdBlue^®additive tank is refilled in order to

allow normal operation of the SCR system.

Presentation of the SCR system

Using an additive called AdBlue^®containing urea,

a catalytic converter turns up to 85% of nitrous

oxides (NOx) into nitrogen and water, which are

harmless to health and the environment.

If the estimated mileage between two services

is greater than 12 500 miles (20 000 km), we

recommend that you go to a CITROËN dealer

or a qualified workshop to have the necessary

top-up carried out.

Freezing of the AdBlue^®additive

The AdBlue^®additive 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.

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Practical information

Topping-up the AdBlue^®additive

Filling the AdBlue^®tank is an operation

included in every routine service on your

vehicle by a CITROËN dealer or a qualified

workshop.

Nevertheless, given the capacity of the tank,

it may be necessary to top-up the additive

between services, more particularly if an alert

(warning lamps and a message) signals the

requirement.

You can got to a CITROËN dealer or a qualified

workshop.

If you envisage topping-up yourself, please

read the following warnings carefully.

Precautions in use

The AdBlue^®additive is an urea-based

solution. This liquid is non-flammable,

colourless and odourless (kept in a cool area).

In the event of contact with the skin, wash

the affected area with soap and water. In the

event of contact with the eyes, wash (irrigate)

the eyes with large amounts of water or with

an eye wash solution for at least 15 minutes.

If a burning sensation or irritation persists, get

medical attention.

Use only AdBlue^®additive that meets

the ISO 22241 standard.

Never dilute the additive with water.

Never pour the additive into the Diesel

fuel tank.

If swallowed, immediately wash out the mouth

with clean water and then drink plenty of water.

In certain conditions (high ambient

temperature, for example), the risk of release

of ammonia cannot be excluded: do not inhale

the product. Ammonia vapour has en irritant

effect on mucous membranes (eyes, nose and

throat).

The supply in a non-drip bottle simplifies

toping-up. You can obtain 1.89 litre (half a

US gallon) bottles from a CITROËN dealer or a

qualified workshop.

7

Keep AdBlue^®out of the reach of

children, in its original bottle.

Never transfer AdBlue^®to another

container: it would lose its purity.

Never top-up from an AdBlue^®

dispenser reserved for heavy goods

vehicles.

233

Practical information

Recommendations on storage

Procedure

AdBlue^®freezes at about -11°C and

deteriorates above 25°C. It is recommended

that bottles be stored in a cool area and

protected from direct sunlight.

Under these conditions, the additive can be

kept for at least a year.

Before topping-up, 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 its tank. Park your

vehicle in a warmer area for a few hours to

allow the top-up to be carried out.

If the additive has frozen, it can be used once it

has completely thawed out.

F

Switch off the ignition and remove the

key, or if your vehicle has one, press the

START/STOP button to switch off the

engine.

Never store bottles of AdBlue^®in your

vehicle.

F

Raise the boot floor for access to the

AdBlue^®tank.

Secure the boot floor by attaching its cord

to the hook on the parcel shelf support.

F

Unclip the black plastic blanking plug using

its tab.

Insert your fingers into the aperture and

turn the blue cap a 6^thof a turn anti-

clockwise.

F

Carefully lift off the cap, without dropping it.

234

Practical information

F

After emptying the bottle, wipe away any

spillage around the tank filler using a damp

cloth.

Important: in the event of a top-up

after a breakdown because of a lack

of additive, you must wait around

5 minutes before switching on the

ignition, without opening the

driver's door, locking 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, after

10 seconds, start the engine.

F

Obtain a bottle of AdBlue^®. After first

checking the use-by date, read carefully

the instructions on use on the label before

pouring the contents of the bottle into your

vehicle's AdBlue^®tank.

If any additive is split or splashed, wash

immediately with cold water or wipe with

a damp cloth.

If the additive has crystallised, clean it

off using a sponge and hot water.

F

Refit the blue cap to the tank and turn it a

6^thof a turn clockwise, to its stop.

Refit the black plastic blanking plug,

clipping it in on the flap

Detach the cord from the parcel shelf

support and lower the boot floor.

Important: if your vehicle's AdBlue^®

tank is completely empty - which is

confirmed by the alert displays and the

impossibility of starting the engine - you

must add at least 3.8 litres

Never dispose of AdBlue^®additive

bottles in the household waste. Place

them in a special container provided

this purpose or take them to your dealer.

7

(so two 1.89 litre bottles).

235

Practical information -> AdBlue? additive and SCR system for Your Citroen C4 SUV Second Generation (2010-2018)

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