2020 CITROEN RELAY fluid

8
Instruments
Release the parking brake to switch off the
warning lamp, keeping your foot on the brake
pedal.
BrakingFixed.
The brake fluid level is too low.
Carry out (1) then top up with fluid that complies
with the Manufacturer's recommendations.
If the problem persists, carry out (2).
Fixed.
The electronic brake force
distribution (EBFD) system is faulty.
Carry out (1) and then (2).
Orange warning/indicator lamps
Service
Temporarily on. One or more minor faults, for which there
is/are no specific warning lamp(s), have been
detected.
Carry out (2).
Fixed, accompanied by the display of a
message.
One or more major faults, for which there is/are
no specific warning lamp(s), have been detected.
Identify the cause of the fault using the message
displayed in the instrument panel, then carry out
(3).
Anti-lock braking system (ABS)Fixed.
The anti-lock braking system has a fault.
The vehicle retains conventional braking. Drive carefully at moderate speed, then 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.
Collision Risk Alert/Active Safety BrakeFlashing.
The system activates and brakes the
vehicle momentarily so as to reduce the speed of
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.
The system has a fault.
If these warning lamps come on after the engine
is switched off and then restarted, carry out (3).
Brake pads
Fixed.
The front brake pads are worn.
Carry out (3) to replace the pads.
DSC / ASRFlashing.
The system is operating.
The system optimises traction and improves the
directional stability of the vehicle.
Fixed, accompanied by an audible signal and a message in the screen.
The DSC / ASR or hill start assist system has a
fault.
Carry out (2).
Fixed.
The Intelligent Traction Control has a
fault.
Carry out (2).
Particle filter (Diesel)Fixed.
The particle filter is regenerating itself.
Leave the engine running until the warning lamp
goes off so that regeneration can be completed.
Engine self-diagnostic systemFixed.
A fault with the engine or the EOBD
emissions control system has been detected.
EOBD (European On Board Diagnosis) is a
diagnostics system which complies with, among
others, the standards on emissions limits of:
– CO (carbon monoxide),
– HC (unburnt hydrocarbons),
– NOx (nitrogen oxides), detected by oxygen
sensors placed downstream of the catalytic
converters and
– particles.
Carry out (3) quickly.
Tyre under-inflation detectionFixed.
A tyre is deflated or punctured.
Carry out (1).
Change the wheel or repair the tyre.

12
Instruments
Check the engine coolant level regularly.
For more information on Checking
levels, refer to the corresponding section.
AdBlue® fluid ange
indicators
Once the AdBlue® tank is on reserve or after
detection of a fault with the SCR emissions
control system, when the ignition is switched on,
an indicator displays an estimate of the distance
that can be travelled before engine starting is
prevented.
In the event of a simultaneous system fault and
low AdBlue
® level, the shortest-range figure is
the one displayed.
In the event of the risk of non-starting
related to a lack ofAdBlue®
The engine start prevention system
required by regulations is activated
automatically once theAdBlue
® tank is empty.
Range greater than 1,500 miles (2,400 km)
When switching on the ignition, there is no
automatic display of range in the instrument
panel.
Range between 1,500 and 375 miles (2,400
and 600 km)
Once the 1,500 miles (2,400 km)
threshold is reached, this indicator
flashes, accompanied by a temporary message
indicating the driving autonomy expressed in
miles or kilometres before the starting of the
engine is blocked.
Each time the ignition is switched on, the alert
will be accompanied by an audible signal.
The reserve level has been reached; it is
recommended that you top up as soon as
possible.
Range less than 372 miles (600 km)
Once the 372 miles (600 km) threshold is
reached, this indicator flashes,
accompanied by a message indicating the
driving autonomy expressed in miles or
kilometres before the starting of the engine is
blocked.
The alert will be repeated with update of the
remaining range at each increment of 31 miles
(50 km) travelled.
Each time the ignition is switched on, the alert
will be accompanied by an audible signal.
It is imperative to top up as soon as possible
before the tank empties completely. Otherwise
you will not be able to restart the vehicle.
Breakdown related to a lack of AdBlue
®
0 km range reached: the AdBlue® tank is empty.
The regulatory device prevents the engine from
starting.
Unless the AdBlue
® is topped up in the
special additive tank, the vehicle will remain
immobilised.
To be able to restart the engine, you must top up with at least 4 litres of
AdBlue®. You can also call a CITROËN dealer
or a qualified workshop for the top-up
required.
For more information on AdBlue®
(BlueHDi engines) and, in particular
topping up, refer to the corresponding section.
In the event of a fault with the SCR
emissions control system
Detection
The self-diagnostic warning lamp comes
on.
Every time the ignition is switched on, the
emissions fault is confirmed by an audible signal
and a message.
If it is a temporary fault, the alert disappears
as soon as the exhaust emissions return to the
levels required by the standard.
However, if the warning lamp is still on
after 30 miles (50 km) of driving, the fault
is confirmed.
An engine start prevention system will be
activated automatically after 250 miles (400
km) travelled following this confirmation.
See a CITROËN dealer or a qualified
workshop as soon as possible.

49
Lighting and visibility
4

Successive presses on these
controls adjust the headlamps.
An indicator lamp on the display indicates the
selected setting position (0, 1, 2, 3).
Wiper control stalk
Windscreen wipers
The wiping is active only when the ignition key is
in the ON position.


The control stalk can have 5 different positions:
– Wipers off.
– Intermittent wiping: 1 notch down. In this
position, by turning the ring, it is possible to
select 4 frequency levels (very slow, slow,
normal, fast).
– Slow continuous wiping: 2 notches down.
– Fast continuous wiping: 3 notches down.
– Single wipe: pull the control stalk towards the
steering wheel.
Automatic rain sensitive windscreen wipers
If your vehicle is fitted with this system, the
wiping speed is adapted automatically to the
intensity of the rainfall.
Automatic wipe: 1 notch downwards. This is
confirmed by a single wipe. Must be reactivated
after each time the ignition is switched off.
In this position, it is possible to increase the
sensitivity of the rain sensor by turning the ring.
Do not cover the rain sensor, located at
the top centre of the windscreen.
When washing the vehicle, switch off the
ignition or deactivate the automatic rain
sensitive wipers.
Check that the windscreen wiper blades
will be able to operate freely when using
in freezing conditions.
Use the footboard, in the lower front panel, to
remove any accumulation of snow at the base
of the windscreen and on the blades.
You can change the wiper blades. For more information on Changing
a wiper blade , refer to the corresponding
section.
With Stop & Start, when the windscreen
wiper control is in the fast wiping
position, STOP mode is not available.
Screenwash and headlamp
washers
► Pull the wiper control towards you; the
screenwash action will be accompanied by a
timed operation of the wipers.
Depending on version, the headlamp washer
is linked to the screenwash; it is activated if the
dipped beam headlamps are on.
This fluid level should be checked regularly, particularly during winter.
For more information on Checking the levels
and, in particular, on the screenwash / headlamp
washer levels, refer to the corresponding
section.

95
Practical information
7

► Pull the control located on the side of the
dashboard towards you.
On the outside

► Push the lever located above the grille
upwards and lift the bonnet.
Do not open the bonnet under very windy
conditions.
When the engine is hot, handle the lever and
the stay with care (risk of burns).


► Unclip the stay and rotate it to insert it into
the first slot and then into the second slot.
Because of the presence of electrical
equipment under the bonnet, it is
recommended that exposure to water (rain,
washing, etc.) be limited.
Closing the bonnet
► Before closing the bonnet, replace the stay in
its housing. ►
Lower the bonnet and release it near the end
of its travel. Check the bonnet is locked.
Diesel engines



1. Screenwash and headlamp washer reservoir
2. Power steering fluid reservoir
3. Engine coolant reservoir
4. Brake and clutch fluid reservoir
5. Diesel fuel filter
6. Fusebox
7. Air filter
8. Dipstick
9. Engine oil filler cap
Battery connections:
+ Positive metallic terminal
- Negative metallic terminal (earth)

96
Practical information
Topping up the engine oil level

► Remove the dipstick before topping up.
► Recover the oil filler neck.
► Unscrew the filler cap.
► Install the oil filler neck in the filler hole.
► Top up with oil.
► Remove the oil filler neck from the filler hole.
► Replace the filler cap.
► Replace the dipstick.
Brake fluid
The level of this fluid should be close to
the "MAX" mark. If not, check the brake
pad wear.
The Diesel circuit is under very high pressure.
All work on this circuit must be carried out
only by a CITROËN dealer or a qualified
workshop.
Checking levels
Check all of the following levels regularly in
accordance with the manufacturer's service
schedule. Top them up if required, unless
otherwise indicated.
If a level drops significantly, have the
corresponding system checked by a CITROËN
dealer or a qualified workshop.
The fluids must comply with the manufacturer's requirements and with
the vehicle's engine.
Take care when working under the bonnet, as certain areas of the engine
may be extremely hot (risk of burns) and the
cooling fan could start at any time (even with
the ignition off).
If the engine cover is to be removed /
refitted, handle it with care to avoid
damaging the mounting clips.
Used products
Avoid prolonged contact of used oil or fluids with the skin.
Most of these fluids are harmful to health and
very corrosive.
Do not discard used oil or fluids into
sewers or onto the ground.
Empty used oil into the containers reserved
for this purpose at a CITROËN dealer or a
qualified workshop.
Engine oil
The level is checked, with the engine having been switched off for at least 30
minutes and on level ground, using the dipstick.
It is normal to top up the oil level between two
services (or oil changes). It is recommended
that you check the level, and top up if necessary,
every 3,000 miles (5,000 km).
In order to maintain the reliability of the
engine and emissions control system,
never use additives in the engine oil.
Checking using the dipstick
For the location of the dipstick, please refer
to the illustration of the corresponding engine
compartment.
► Grasp the dipstick by its coloured grip and
pull it out completely.
► Wipe the end of the dipstick using a clean,
lint-free cloth.


► Reinsert the dipstick and push fully down,
then pull it out again to visually check the oil
level: the correct level is between marks A (max)
and B (min).
Do not start the engine if the level is:
– above mark A: contact a CITROËN dealer or a
qualified workshop.
– below mark B: top up the engine oil
immediately.
Oil grade
Before topping up or changing the engine
oil, check that the oil is suitable for the engine
and complies with the recommendations in
the service schedule supplied with the vehicle
(or available from your CITROËN dealer and
qualified workshops).
Use of non-recommended oil may invalidate
the contractual warranty in the event of
engine failure.

97
Practical information
7Topping up the engine oil level

► Remove the dipstick before topping up.
► Recover the oil filler neck.
► Unscrew the filler cap.
► Install the oil filler neck in the filler hole.
► Top up with oil.
► Remove the oil filler neck from the filler hole.
► Replace the filler cap.
► Replace the dipstick.
Brake fluid
The level of this fluid should be close to
the "MAX" mark. If not, check the brake
pad wear.
To know how often the brake fluid should be
replaced, refer to the manufacturer's servicing
schedule.
If topping up, clean the cap before
replacing it. Use only DOT4 brake fluid
from a sealed canister.
Power steering fluid
The level of this fluid should be close to the "MAX" mark. Check it, with the
vehicle parked on level ground and with the
engine cold, by reading the level on the filler
neck.
Unscrew the cap secured to the dipstick. To
access the reservoir cap, remove the protective
cover by turning its three fixing screws a quarter
turn, then remove the second cover placed on
the cap.
Engine coolant
It is normal to top up this fluid between
two services.
The check and top-up must only be done with
the engine cold.
A low level presents a risk of serious damage to
the engine.
The level of this fluid should be close to the
"MAX" mark but should never exceed it.
If the level is close to or below the " MIN” mark, it
is essential to top up.
When the engine is hot, the temperature of this
fluid is regulated by the fan.
As the cooling system is pressurised, wait at
least one hour after switching off the engine
before carrying out any work.


To gain access to the tank cap, remove the
protective cover by turning its three fixing screws
a quarter of a turn.
In order to avoid the risk of scalding if you need
to top up in an emergency, wrap a cloth around
the cap and unscrew the cap by two turns to
allow the pressure to drop.
Once the pressure has dropped, remove the cap
and top up to the required level.
Check the coolant level regularly
according to the use of your vehicle
(every 3,000 miles (5,000 km) / 3 months).

98
Practical information
A 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.
Screenwash and headlamp
washer fluid
To check the level or top up this fluid on
vehicles fitted with headlamp washers,
immobilise the vehicle and switch off the engine.
Reservoir capacity: approximately 5.5 litres.


To access the filler cap, pull the telescopic filler
neck and unclip the cap.
Fluid specification
The fluid must be topped up with a ready-to-use
mixture.
In winter (temperatures below zero), a liquid
containing an agent to prevent freezing must
be used which is appropriate for the prevailing
conditions, in order to protect the elements of the
system (pump, tank, ducts, jets, etc.).
Filling with pure water is prohibited under
all circumstances (risk of freezing,
limestone deposits, etc.).
AdBlue (BlueHDi)
An alert is triggered when the reserve level is
reached.
For more information on Indicators and in
particular the AdBlue range indicators, refer to
the corresponding section.
To avoid the vehicle being immobilised in
accordance with regulations, you must top up the
AdBlue tank.
For more information on AdBlue
® (BlueHDi),
and in particular on the supply of AdBlue, refer to
the corresponding section.
Checks
Unless otherwise indicated, check these
components in accordance with the
manufacturer's service schedule and according
to your engine.
Otherwise, have them checked by a CITROËN
dealer or a qualified workshop.
Only use products recommended by
CITROËN or products of equivalent
quality and specification.
In order to optimise the operation of
components as important as those in the
braking system, CITROËN selects and offers
very specific products.
12 V battery
The battery does not require any maintenance.
However, check regularly that the terminals
are correctly tightened (versions without quick
release terminals) and that the connections are
clean.
For more information on the precautions
to take before any work on the 12 V
battery, refer to the corresponding section.
Versions equipped with Stop & Start are
fitted with a 12 V lead-acid battery of
specific technology and specification.
Its replacement should be carried out only by
a CITROËN dealer or a qualified workshop.
Air filter
Depending on the environment and the
use of the vehicle (e.g. dusty atmosphere,
city driving), change it twice as often, if
necessary .
Passenger compartment
filter
Depending on the environment and the
use of the vehicle (e.g. dusty atmosphere,
city driving), change it twice as often, if
necessary .

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.