2020 CITROEN RELAY engine

99
Practical information
7A clogged passenger compartment filter can adversely affect air conditioning
system performance and generate
undesirable odours.
Oil filter
Change the oil filter each time the engine
oil is changed.
Particle filter (Diesel)
In addition to the catalytic converter, this filter
actively contributes to the preservation of
air quality by trapping the unburnt pollutant
particles. Black exhaust fumes are therefore not
emitted.
Operation
This filter, inserted into the exhaust system,
accumulates the carbonaceous particles. The
engine management computer automatically
and periodically manages the removal of
carbonaceous particles (regeneration).
The regeneration procedure is triggered
according to the amount of accumulated
particles and the conditions of use of the vehicle.
During this phase, you may notice certain
phenomena - accelerated idling, triggering of
the cooling fan, increased smoke and increased
temperature at the exhaust - which have no
impact on the operation of the vehicle and the
environment.
Following prolonged operation of the
vehicle at very low speed or at idle, you
may, in exceptional circumstances, notice the
emission of water vapour at the exhaust while
accelerating. This has no impact on the
vehicle’s behaviour and the environment.
Due to the high exhaust temperatures
caused by the normal operation of the
particle filter, it is recommended not to park
the vehicle on flammable materials (grass, dry
leaves, pine needles, etc.) to avoid any risk of
fire.
Saturation/Regeneration
If there is a risk of clogging, this warning
lamp comes on, accompanied by a
message on the instrument panel display.
This warning is due to the start of saturation of
the particle filter (exceptionally long urban driving
conditions: reduced speed, traffic jams, etc.).
In order to regenerate the filter, it is
recommended to drive as soon as possible -
when traffic conditions and regulations permit
- at a speed of at least 37 mph (60 km/h), with
an engine speed above 2,000 rpm for about
15 minutes (until the warning lamp and/or the
message disappear).
If possible, avoid switching off the engine
before the end of filter regeneration; repeated
interruptions can lead to early deterioration of the
engine oil. It is not recommended to terminate
the filter regeneration with the vehicle stationary.
Malfunction
If this alert persists, do not ignore this warning;
this indicates that a malfunction has occurred in
the exhaust system/particle filter assembly.
Have the assembly checked by a CITROËN
dealer or a qualified workshop.
Manual gearbox
The gearbox does not require any maintenance (no oil change).
Brake pads
Brake wear depends on the style of
driving, particularly in the case of vehicles
used in town, over short distances. It may be
necessary to have the condition of the brakes
checked, even between vehicle services.
Unless there is a leak in the circuit, a drop in the
brake fluid level indicates that the brake pads
are worn.
If this warning lamp comes on, have the
brake pads checked by a CITROËN
dealer or a qualified workshop.
After washing the vehicle, moisture, or in
wintry conditions, ice can form on the
brake discs and pads: braking efficiency may
be reduced. Gently dab the brakes to dry and
defrost them.

100
Practical information
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
engines)


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
Brake disc wear
For information on checking brake disc
wear, contact a CITROËN dealer or a
qualified workshop.
Manual parking brake
If you notice excessive brake lever travel
or decreased effectiveness, the parking
brake must be adjusted, even between two
services.
This system must be checked by a CITROËN
dealer or a qualified workshop.
Diesel fuel filter
The Diesel fuel filter is located under the bonnet,
close to the brake fluid reservoir.
If this warning lamp comes on, the filter
must be purged to remove water.
You can also purge the fuel filter regularly, every
time the engine oil is changed.
Bleeding the water in the filter

► Couple a clear hose to the bleed screw
1head.
► Place the other end of the clear hose in a
container.
► Loosen bleed screw 2.
► Switch on the ignition.
► Wait for the scavenge pump to stop.
► Switch off the ignition.
► Tighten bleed screw 2.
► Remove, then drain the clear hose and the
container.
► Start the engine.
► Check that there are no leaks.
HDi engines make use of advanced
technology. Any intervention requires a
special qualification guaranteed by the
CITROËN dealer network or a qualified
workshop .
Wheels 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

101
Practical information
7reading 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
engines)


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 19 litres.
It has an external filler neck, located in the fuel
filler flap under the filler neck of the fuel tank,
closed by a blue cap.
Its capacity allows a driving range of
approximately 3,700 miles (6,000 km) ( which
may vary considerably depending on the
driving style and the type of vehicle).
An alert system is triggered when the remaining
range reaches 1,500 miles (2,400 km), i.e. once
the reserve level has been reached.
Once the AdBlue® tank is empty, a
system required by legislation prevents
starting of the engine.
If the SCR system is defective, 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 travelling a distance of 250 miles (400
km), a system will be triggered automatically
to prevent engine starting.
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.
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.
It is possible to obtain AdBlue
® from a CITROËN
dealer or a qualified workshop.
You can also visit a service station equipped with AdBlue® pumps specially
designed for passenger vehicles.
Recommendations on storage
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.
If the fluid has frozen, it can be used once it has
completely thawed out at room temperature.

102
Practical information
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 5 litres.
After refilling
► Refit the blue cap to the tank filler and turn it
clockwise as far as it will go (one sixth of a turn).
► Close the fuel filler flap.
Do not dispose of AdBlue® containers in
the household waste.
Place them in a container reserved for this
purpose or take them back to where you
bought them.
Never store AdBlue® containers in your
vehicle.
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).
Store AdBlue® out of the reach of
children, in its original container.
Procedure
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 its tank. Park the vehicle in a warmer area
for a few hours to allow the top-up to be carried
out.
Never put the AdBlue® into the Diesel
fuel tank.
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.
Important: in the event of a top-up after
an AdBlue breakdown, you must wait
about 5 minutes before switching on the
ignition, without opening the driver's door,
unlocking the vehicle or bringing the
electronic key into the passenger
compartment.
Switch on the ignition, then wait for 10
seconds before starting the engine.
► Switch off the ignition and remove the key
from the switch to switch off the engine.


► Turn the blue cap of the AdBlue® tank a 6th of
a turn anti-clockwise and remove it.
Filling up
► 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: introduce the nozzle
and fill the tank until the nozzle automatically
cuts out.
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.

104
In the event of a breakdown
Temporary puncture repair kit
This temporary puncture repair kit is stored in a
bag, placed in one of the front doors.


It includes:
– a cartridge A, containing the sealant, equipped
with: • a filling pipe B,
• a sticker C indicating "50 mph (80 km/h)
max.", which the driver must apply within
their field of vision (on the dashboard) after
having repaired the tyre,
– a quick user guide for the repair kit,
– a compressor D equipped with a pressure
gauge and connections,
– adapters, for the inflation of various
components.
Repairing a tyre
► Apply the parking brake.


► Unscrew the cap of the tyre valve, remove
filling hose B and screw ring E onto the valve.
► Make sure compressor switch F is in
position 0 (off).
► Start the engine.
► Insert plug G into the nearest socket on the
vehicle.
► Operate the compressor by setting switch F
to position I (on).
► Inflate the tyre to a pressure of 5 bar.
To obtain a more accurate reading, it is
recommended to check the pressure value on
pressure gauge H, with the compressor off.
► If a pressure of at least 3 bar is not reached
within 5 minutes, disconnect the compressor
from the valve and the power socket, then move
the vehicle forwards by approximately 10 metres,
to disperse the sealant inside the tyre.
► Then repeat the inflation procedure:
• if a pressure of at least 3 bar is not reached
within 10 minutes, stop your vehicle: the tyre
is too damaged and could not be repaired.
Contact a CITROËN dealer or a qualified
workshop.
• if the tyre pressure has reached 5 bar,
restart immediately.
► After driving for approximately 10 minutes,
stop and check the tyre pressure again.
► Restore the correct pressure in accordance
with the label on the driver's side pillar and
contact a CITROËN dealer or a qualified
workshop as soon as possible.
This puncture repair kit and the replacement cartridges are available
from a CITROËN dealer.
Checking and restoring
pressure
The compressor can only be used to check and
restore pressure.


► Disconnect hose I and directly connect it
to the tyre valve; the cartridge will thereby be
connected to the compressor and the sealant will
not be injected.
If the tyre needs to be deflated, connect hose
I to the tyre valve and press the yellow button
located in the centre of the compressor switch.
Replacing the cartridge

To replace the sealant cartridge, proceed as
follows:
► Disconnect the hose I.
► Turn the cartridge to be replaced anti-
clockwise and lift it.
► Insert the new cartridge and turn it clockwise,
► Reconnect the hose I and connect pipe B to
its location.
The cartridge contains ethylene glycol, which is harmful if swallowed and irritates
the eyes.
It must be kept out of the reach of children.

11 6
In the event of a breakdown
Changing a fuse

The three fuseboxes are located on the
dashboard on the left-hand side, in the pillar
on the right-hand side and in the engine
compartment.
The designations provided are only for the fuses
that can be replaced by the user. For any other
work, visit a CITROËN dealer or a qualified
workshop.
Professional repairers: for full information
on the fuses and relays, consult the
wiring information and diagrams available
from a CITROËN dealer.
Removing and fitting a fuse


Good
Failed
Before changing a fuse, the cause of the fault
must be found and rectified. The numbers of the
fuses are indicated on the fuse box.
Always replace a faulty fuse with a fuse of
the same rating.
CITROËN accepts no responsibility for
the cost incurred in repairing your vehicle
or for rectifying malfunctions resulting from
the installation of accessories not supplied or
not recommended by CITROËN and not
installed in accordance with its
recommendations, in particular when the
combined power consumption of all of the
additional equipment connected exceeds 10
milliamperes.
Left-hand side dashboard
fuses
► Remove the screws and tilt the casing to
access the fuses.


Fuses A (amperes)Allocation
12 7.5Right-hand dipped beam headlamp
13 7.5Left-hand dipped beam headlamp

11 8
In the event of a breakdown
Right-hand side pillar fuses
► Unclip the cover.
When you have finished, close the cover very
carefully.


Fuses A (amperes)Allocation
55 15Heated seats
56 15Rear passenger 12 V socket
57 10Under-seat additional heating
58 15Left-hand rear screen defrosting
59 15Right-hand rear screen defrosting
63 10Rear passenger additional heating control
65 30Rear passenger additional heating ventilator
Engine compartment fuses
► Remove the nuts and tilt the casing to access
the fuses.
When you have finished, close the cover very
carefully.

11 9
In the event of a breakdown
8Engine compartment fuses
► Remove the nuts and tilt the casing to access
the fuses.
When you have finished, close the cover very
carefully.


Fuses A (amperes)Allocation
1 40ABS pump supply
2 50Diesel pre-heating unit
3 30Ignition switch - Starter
4 40Diesel heater
5 20/50Passenger compartment ventilation with programmable additional heating (+ battery)
6 40/60Maximum speed passenger compartment cooling fan unit (+ battery)
7 40/50/60Minimum speed passenger compartment cooling fan unit (+ battery)
8 40Passenger compartment cooling fan unit (+ key)
9 15Rear 12 V socket (+ battery)
10 15Horn