2020 CITROEN RELAY air filter

5
Eco-driving
Eco-driving
Eco-driving refers to a range of everyday
practices that allow the motorist to optimise their
fuel consumption and CO
2emissions.
Optimise your use of the gearbox
With a manual gearbox, move off gently and
change up promptly. While accelerating, change
up early.
The gear efficiency indicator prompts you to
engage the most suitable gear: whenever this
indication is displayed on the instrument panel,
follow it straight away.
Drive smoothly
Maintain a safe distance between vehicles, use
engine braking rather than the brake pedal and
press the accelerator gradually. These attitudes
help to save fuel, reduce CO
2 emissions and
decrease general traffic noise.
If the vehicle has the steering-mounted
"CRUISE" control, use cruise control at speeds
above 19 mph (30 km/h) when traffic is flowing
smoothly.
Use electrical equipment wisely
Before moving off, if the passenger compartment
is too warm, ventilate it by opening the windows
and air vents before using the air conditioning.
At speeds above 31 mph (50 km/h), close the
windows and leave the air vents open. Consider using equipment that can help keep
the temperature in the passenger compartment
down.
Unless automatically regulated, switch off the air
conditioning as soon as the desired temperature
has been reached.
Switch off the demisting and defrosting functions,
if they are not managed automatically.
Switch off the heated seat as soon as possible.
Switch off the headlamps and foglamps when
the visibility conditions do not require their use.
Avoid running the engine before moving off,
particularly in winter; your vehicle will warm up
much faster while driving.
As a passenger, avoid connecting your
multimedia devices (film, music, video game,
etc.) to help reduce consumption of electrical
energy, and hence fuel.
Disconnect all portable devices before leaving
the vehicle.
Limit the causes of excess consumption
Spread loads throughout the vehicle.
Limit the loads carried in the vehicle and
minimise wind resistance (roof bars, roof rack,
bicycle carrier, trailer, etc.). Preferably, use a
roof box.
Remove roof bars and roof racks after use.
At the end of winter, remove snow tyres and refit
summer tyres.
Comply with servicing instructions
Check tyre pressures regularly, with the tyres
cold, referring to the label in the door aperture on
the driver's side.
Carry out this check in particular:
– before a long journey.
– at each change of season.
– after a long period out of use.
Do not overlook the spare wheel and, where
applicable, the tyres on your trailer or caravan.
Have your vehicle serviced regularly (engine oil,
oil filter, air filter, passenger compartment filter,
etc.) and observe the schedule of operations in
the manufacturer's service schedule.
With a BlueHDi Diesel engine, if the SCR system
is faulty, your vehicle will emit pollution. Visit
a CITROËN dealer or a qualified workshop
as soon as possible to restore your vehicle’s
nitrogen oxide emissions to regulatory
compliance.
When filling the fuel tank, do not continue after
the third nozzle cut-out, to avoid overflow.
You will only see the fuel consumption of your
new vehicle settle down to a consistent average
after the first 1,900 miles (3,000 kilometres).

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.

70
Driving
Never leave the vehicle without first
switching the ignition off with the key.
Never refuel with the engine in STOP
mode; you must switch off the ignition
using the key.
Special cases: STOP mode
not available
STOP mode is not activated when:
– the system is initialising,
– the driver's door is open,
– the driver's seat belt is not fastened,
– the air conditioning is on,
– the rear screen demisting is on,
– the windscreen wipers are on fast wipe,
– the reverse gear is engaged for the parking
manoeuvre,
– some special conditions (battery charge,
engine temperature, particle filter regeneration,
braking assistance, exterior temperature, etc.)
where the engine is needed to assure control of
a system.
– during intensive use of Stop & Start, it may
be deactivated to conserve starting ability;
go to a CITROËN dealer to have the function
reactivated.
This indicator lamp in the instrument panel flashes for a few seconds, then
goes off.
This operation is perfectly normal.
Going into engine START
mode
With a gear engaged, the automatic restarting of
the engine is only possible by fully depressing
the clutch pedal.
This indicator lamp goes off and the engine restarts.
If, after an automatic restart in START mode, the
driver does not perform any action on the vehicle
within 3 minutes, the system stops the engine
permanently. The engine can only be restarted
with the ignition key.
Special cases: START mode
activated automatically
The START mode may be invoked automatically
in the following circumstances:
– the vehicle is free-wheeling on a gradient,
– the windscreen wipers are on fast wipe,
– the air conditioning is on,
– the engine has been stopped for around 3
minutes with Stop & Start,
– some special conditions (battery charge,
engine temperature, braking assistance, air
conditioning setting, etc.) where the engine is
needed for control of the system or vehicle.
In this case, a message appears in the
instrument panel screen, accompanied by
this indicator lamp, which flashes for a few
seconds, then goes off.
This operation is perfectly normal.
While in STOP mode with a manual
gearbox, if a gear is engaged without
fully depressing the clutch pedal, restarting
may not take place.
An indicator lamp and/or message is
displayed in the instrument panel asking
you to fully depress the clutch pedal to allow
restarting.
With the engine stopped in STOP mode,
if the driver unfastens their seat belt and
opens a front door, the engine can only be
restarted using the ignition key. There is an
audible signal, accompanied by flashing of this
indicator lamp, and the display of a message.
Malfunction
In the event of a malfunction, the Stop &
Start is deactivated and this warning lamp
comes on, accompanied by a message on the
instrument panel display.
Have the system checked by a CITROËN dealer
or a qualified workshop.
In the event of a malfunction in STOP mode, the
engine can be restarted by fully depressing the
clutch pedal or putting the gear lever in neutral.
Hill start assist
This system keeps your vehicle briefly stationary
(for approximately 2 seconds) when making a hill
start, while you transfer your foot from the brake
pedal to the accelerator pedal.
This system (also called HHC - Hill Hold
Control), integrated with the dynamic stability
control system, is activated in the following
conditions:
– the vehicle must be stationary, engine running,
foot on the brake,
– the gradient of the road must be steeper than
5%,
– uphill, the gearbox must be in neutral or in a
gear other than reverse,
– downhill, reverse gear must be engaged.
The hill start assist system is a driving
aid. It is not an automatic vehicle parking
function or an automatic parking brake.
Operation

With the brake pedal and clutch pedal pressed,
from the time you release the brake pedal,

76
Driving
simultaneously in the two dedicated areas of the
instrument panel.
If an additional road sign is detected, such
as a reduced speed limit for wet road sign, it
is displayed in an empty window below the
corresponding sign.
Additional signs are filtered as follows:
– Signs for snow or ice only appear if the
outside temperature is below 3°C.
– Signs for snow, rain or fog are only displayed
if the wipers are activated while the outside
temperature is below 3°C.
– Signs concerning heavy goods vehicles are
not displayed if they concern a vehicle weighing
less than 4 tonnes.
– Signs concerning farm equipment are not
displayed.
Signs such as no overtaking go out after about
40 seconds on the instrument panel.
Activation/Deactivation
This function can be set using the MODE button: in the “Traffic Sign” menu, select
“ON” or “OFF”.
For more information on Vehicle
configuration (MODE) , refer to the
corresponding section.
Operating limits
The system does not take account of reduced
speed limits, especially those imposed in the
following cases:
– Poor weather (rain, snow).
– Atmospheric pollution.
– Towing.
– Driving with a space-saver type spare wheel
or snow chains fitted.
– Driving with a non-standard suspension kit.
– Tyre repaired using the temporary puncture
repair kit.
– Young drivers.
The system may not display the speed limit if it
does not detect a speed limit sign within a preset
period and in the following situations:
– Road signs that are obstructed, non-standard,
damaged or bent.
– Obsolete or incorrect maps.
– Road incline causing the sign to be out of the
camera field of vision (on a slope, for example).
– Change in the vehicle load that causes the
camera to tilt significantly (system operation may
temporarily be suspended to enable camera
self-calibration).
Speed limiter
Refer to the General recommendations on the
use of driving and manoeuvring aids .
System which prevents the vehicle
from exceeding the speed
programmed by the driver. The speed is selected when the vehicle is
stationary with the engine running or while
driving with at least 2
nd gear engaged.
The minimum speed to be programmed is 19
mph (30 km/h).
The vehicle responds to the driver's foot
pressure on the accelerator until resistance is felt
in the pedal, which signifies that the vehicle has
reached the programmed speed.
However, depressing the pedal beyond this point
of resistance to the floor allows you to exceed
the programmed speed. To resume use of the
speed limiter, gradually release the pressure
on the accelerator pedal and return below the
programmed speed.


1. Selection of the speed limiter function
2. Activation / deactivation of the function
3. Programming a speed
The selection status of the function and the
programmed speed are visible in the instrument
panel display screen.
Selecting the function
► Turn ring 1 all the way down. The speed
limiter is selected, but is not yet active.


The display indicates OFF and the last
programmed speed.
Programming a speed
A speed can be programmed without activating
the speed limiter but with the engine running.
To memorise a speed higher than the previous
one:
► Move the control upwards (+).
A short press increases the setting by 1 mph
(km/h).
Pressing and holding increases the setting in
steps of 5 mph (km/h).
To memorise a speed lower than the previous
one:
► Move the control downwards (-).
A short press decreases the setting by 1 mph
(km/h).
Pressing and holding decreases the setting in
steps of 5 mph (km/h).
Activation/Deactivation
► Press button 2 to activate the speed limiter.

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)

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.

11 7
In the event of a breakdown
8FusesA (amperes)Allocation
32 7.5Passenger compartment lighting (+ battery)
34 7.5Minibus passenger compartment lighting - Hazard warning lamps
36 10Audio system - Air conditioning controls - Alarm - Tachograph - Battery cut-off computer - Additional
heating programmer (+ battery)
37 7.5Brake lamps switch - Third brake lamp - Instrument panel (+ key)
38 20Door central locking (+ battery)
42 5ABS sensor and computer - ASR sensor - DSC sensor - Brake lamps switch
43 20Windscreen wiper motor (+ key)
47 20Driver-side electric window motor
48 20Passenger-side electric window motor
49 5Park assist computer - Audio system - Steering-mounted controls - Central and side control pane\
ls -
Auxiliary control panel - Battery cut-off computer (+ key)
50 7.5Airbags and pretensioners computer
51 5Tachograph - Power steering computer - Air conditioning - Reversing lamps - Diesel fuel filter water
sensor - Flowmeter (+ key)
53 7.5Instrument panel (+ battery)
90 7.5Left-hand main beam headlamp
91 7.5Right-hand main beam headlamp
92 7.5Left-hand foglamp
93 7.5Right-hand foglamp