2019 CITROEN RELAY check engine

131
Brake disc wear
For information on checking brake
disc wear, contact a CITROËN or
a


qualified workshop.
Parking brake
If excessive travel or a loss of
e ffectiveness of this system is
noticed, the parking brake must
be checked, 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 reser voir. 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.
Purging water from the filterThe HDi engines use advanced technology.
All work must be done by personnel that
have had special training, which can be
ensured by going to 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.
After washing the vehicle, dampness, or
in wintry conditions, ice can form on the
brake discs and pads: braking efficiency
may be reduced. Make light brake
applications to dry and defrost the brakes.
F

C

onnect a

transparent pipe to the head of
the purge screw 1 .
F

P

lace the other end of the transparent pipe
in a

container.
F

L

oosen the purge screw 2 .
F

S

witch the ignition on.
F

W

ait until the supply pump stops running.
F

S

witch the ignition off.
F

T

ighten the purge screw 2 .
F

R

emove and then empty the transparent
pipe and the container.
F

S

tart the engine.
F

C

heck that there are no leaks.
7
Practical information

134
Refilling
F Insert the AdBlue® pump nozzle and refill
the tank until the nozzle stops automatically. Important:
-

N
ever pour AdBlue
® into the Diesel fuel
tank.
-

T

o avoid over flowing the AdBlue
® tank,
it is recommended:
•

T

o do a

top up between 10

and
13

litres using the AdBlue
® container
or bottle.
Or
•

I

f filling in a

ser vice station, to stop
after the first automatic shut-off of
the nozzle.
-
I

f your vehicle's AdBlue
® tank is
completely empty – which is confirmed
by the alert messages and the
impossibility of starting the engine –
you must add at least 4

litres.
If any AdBlue
® is splashed, or if there are
any spillages on the side of the body, 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.
F

O

btain an


AdBlue
® container or bottle. After
first checking the use-by date, read the
instructions on the label carefully before
pouring the contents of the container or
bottle into your vehicle's AdBlue tank.
Or F

R
efit the blue cap to the tank filler and turn it
1/6 of a turn clockwise, to its stop.
F
C
lose the fuel filler flap.
Important: In the event of a top-up after
running out of AdBlue , you must wait
about five minutes before switching on the
ignition, without opening the driver's
door, unlocking the vehicle or inser ting
the key in the ignition switch .
Switch on the ignition, then wait for
10 seconds before starting the engine.
Practical information

135
Temporary puncture
repair kit
This temporary puncture repair kit is kept
in a bag and stowed in one of the front door
pockets.
It consists of:
-

a c
artridge A , containing the sealant fluid,
equipped with:
•

a f
illing hose B ,
•

a
n adhesive sticker C showing "max.
50
mph (80 km/h)" that the driver
must apply in a
visible place (on the
dashboard) after having repaired the tyre,
-

a q
uick guide to use of the repair kit,
-

a c
ompressor D equipped with a pressure
gauge and unions,
-

a
daptors, for the inflation of various items.
Repairing a tyre
F Apply the parking brake.
F
U
nscrew the tyre valve cap, remove the
filling hose B and screw the ring E onto the
valve.
F

S
tart the engine.
F

C
heck that the switch F on the compressor
is in position 0 (of f ). F

I
nsert the connector G into the nearest
power socket on the vehicle.
F

S
witch on the compressor by placing the
switch F in position I (o n),
F

I
nflate the tyre to a pressure of 5 bar.
To obtain a
more accurate reading, you are
advised to check the pressure value on the
pressure gauge H , with the compressor off.
8
In the event of a breakdown

150
Dashboard, left-hand side,
fuses
F Remove the bolts and tilt the box to access the fuses. Fuses A (amps)
Allocation
12 7. 5Right-hand dipped headlamp
13 7. 5Left-hand dipped headlamp
31 5Engine compartment control unit relay – Dashboard control unit
relay (ignition +)
32 7. 5Cabin lighting (battery +)
33 7. 5Battery check sensor on Stop & Start model (battery +)
34 7. 5Minibus interior lighting – Hazard warning lamps
36 10Audio system – Air conditioning controls – Alarm – Tachograph
–
Battery cut-off control unit – Additional heating programmer
(battery


+)
37 7. 5Brake lamps switch – Third brake lamp – Instrument panel (ignition +)
38 20Central door locking (battery +)
42 5ABS control unit and sensor – ASR sensor – DSC sensor – Brake
lamps switch
43 20Windscreen wiper motor (ignition +)
47 20Driver's electric window motor
48 20Passenger's electric window motor
49 5Parking sensors control unit – Audio system – Steering wheel
mounted controls – Centre and side switch panels – Auxiliary switch
panel – Battery cut-off control unit (ignition +)
50 7. 5Airbags and pre-tensioners control unit
51 5Tachograph – Power steering control unit – Air conditioning –
Reversing lamps – Water in Diesel sensor – Air flow sensor
(ignition +)
53 7. 5Instrument panel (battery +)
89 -Not used
90 7. 5Left-hand main beam
91 7. 5Right-hand main beam
92 7. 5Left-hand front foglamp
93 7. 5Right-hand front foglamp
In the event of a breakdown

154
Starting using another
battery
Never try to start the engine by connecting
a battery charger.
Never use a
24 V or higher battery
b o o s t e r.
Check beforehand that the backup
battery has a
nominal voltage of 12 V and
a
capacity at least equal to that of the
discharged battery.
The two vehicles must not be in contact
with each other.
Switch off all the electrical consumers
on both vehicles (audio system, wipers,
lighting, etc.).
Make sure that the jump leads are not
close to moving parts of the engine (fan,
belts, etc.).
Do not disconnect the (+) terminal while
the engine is running.
After every reconnection of the battery, switch
on the ignition and wait 1

minute before
starting to allow the electronic systems to be
initialised. If slight difficulties are experienced
after this, please contact a

CITROËN dealer or
a


qualified workshop. The positive battery terminal A is accessible
via an access cover located at the side of the
fusebox.
Make connections only to the points indicated
and illustrated above. If you fail to follow this
instruction there is the danger of a
short-circuit!
F Connect the red cable to the battery terminal A then to the positive (+) terminal of
the backup battery B .
F

C
onnect one end of the green or black
cable to the negative (-) terminal of the
backup battery B .
F

C
onnect the other end of the green or black
cable to the earth point C on your vehicle.
F

O
perate the starter, let the engine run.
F

W
ait for the engine to return to idle, then
disconnect the cables.
A. Positive battery terminal on your vehicle B.
Backup battery
C. Earth on your vehicle
It is advisable to disconnect the negative
(-) terminal of the battery if the vehicle is
not to be used for a

period of more than
one month.
The description of the battery charging
procedure is given as an indication only.
If the battery has been disconnected for some
time, it may be necessary to reinitialise the
following functions:
-

t

he display parameters (date, time,
language, units of distance and
temperature),
-
r

adio stations,
-

c

entral locking.
Some settings are cleared and must be
reprogrammed; consult a


CITROËN dealer.
If your vehicle is fitted with a

tachograph or an
alarm, disconnection of the negative (-) terminal
of the battery (located under the floor on the
left-hand side, in the cab) is recommended
if the vehicle is not to be used for a

period of
more than 5

days.
In the event of a breakdown

155
To w i n g
General recommendations
Obser ve the legislation in force in your
c o u nt r y.
Ensure that the weight of the towing
vehicle is higher than that of the towed
vehicle.
The driver must remain at the wheel of
the towed vehicle and must have a valid
driving licence.
When towing a
vehicle with all four wheels
on the ground, always use an approved
towbar; rope and straps are prohibited.
The towing vehicle must move off gently.
When the vehicle is towed with its engine
off, there is no longer braking and steering
assistance.
In the following cases, you must always
call on a
professional recovery ser vice:
-

v
ehicle broken down on a motor way or
main road,
-
f

our-wheel drive vehicle,
-

w
hen it is not possible to put the
gearbox into neutral, unlock the
steering, or release the parking brake,
-

t
owing with only two wheels on the
ground,
-

w
here there is no approved towbar
available.
The charging operation must be carried
out in a

ventilated area away from naked
flames or any possible sources of sparks
to eliminate the risk of explosion and fire.
Do not try to charge a

frozen battery: it
must first be thawed out to avoid the risk
of explosion. If the battery has frozen,
before charging it have it checked by
a

specialist who will verify that the internal
components have not been damaged and
that the case is not cracked, which could
mean that there is a

risk of a

leak of toxic
and corrosive acid.
Proceed with a

slow charge at low current
for a

maximum of about 24

hours to avoid
damaging the battery.
Charging the battery using
a battery charger
F Go to the battery located in the front left
f l o o r.
F

D
isconnect the battery.
F

F
ollow the instructions for use provided by
the manufacturer of the charger.
F

R
econnect starting with the negative (-)
terminal.
F

C
heck the condition of the terminals and
clamps. If they are covered with sulphate
(whitish or greenish deposits), disconnect
them and clean them all.
After refitting of the battery by a
CITROËN
dealer or a
qualified workshop, the Stop
& Start system will only be active after
a


continuous period of immobilisation
of the vehicle, a period which depends
on the climatic conditions and the state
of charge of the battery (up to about
8


h o u r s).
The presence of this label, in particular
with the Stop & Start system, indicates
the use of a
12 V lead-acid battery with
special technology and specification;
the involvement of a
CITROËN dealer or
a
qualified workshop is essential when
replacing or disconnecting the battery.
8
In the event of a breakdown

182
Weights and towed
loads (kg)
With load transfer, the braked trailer weight can
be increased, on condition that the equivalent
of this load is removed from the vehicle so that
the GTW is not exceeded. Warning: towing with
a lightly loaded towing vehicle may have an
adverse effect on its road holding.
The kerb weight is equal to the weight without
load + driver (75
kg) + fuel tank filled to 90%.
Hydraulic system
These precautions are mandator y for any
work on the hydraulic system. Before towing a trailer, check that:
-
t
he nose weight on the towbar ball does
not exceed the value (S) indicated on the
trailer's weight plate,
-
t
he maximum trailer weight is less than
the value indicated on the trailer's weight
plate and the Gross Vehicle Weight (GV W)
does not exceed the value indicated on the
vehicle's weight plate.
-
i
n the case of a self-supporting trailer,
the Gross Train Weight (GTW) must not
exceed the value indicated on the vehicle's
weight plate.
•
N
ever work under a tipper body that is not
supported,
• S witch off the power supply to the electro-
hydraulic unit using the circuit breaker,
•

V
ehicle stationary, engine off.
•

W
hen carrying out maintenance work
under the tipper body, place the tipper body
in the safety position secured with its stay
(position indicated by a red arrow under the
back of the tipper body),
Special features

10
Map update
Proceed as follows to update a map:
- L atest Map Guarantee: if a new map
becomes available within ninety days
of using the system for the first time,
you can download it once free of
charge.
-

M
ap updating: you can purchase a new
version of the map in your system.
Follow these four steps to install an updated
map in your system:
-

P
repare a USB device.
-

Install To m To m H O M E and create
a
M yTo mTo m account.
-

D
ownload the map.
-

I

nstall the new map. Use a
USB device, not a mass storage
device (telephone or media player).
To protect the system, do not use a
USB
hub.
Prepare a USB device
The USB device must be prepared with
the engine running and the vehicle
stationary.
You must have a
USB device meeting the
conditions below to update the map:
-

T
he USB device must be empty.
-

T
he USB device has 16 Gb of space
available.
-

U
se only USB devices in FAT32 format (File
Allocation Table).
-

D
o not lock the USB device and check that
it can save files.
Proceed as follows to prepare the USB device:
F

M
ake sure that the map you wish to update
is active in your navigation system.
If the navigation system has several maps
and you wish to update a
map that is not
currently activated, start by activating it.
F

Sel
ect " Change map " in the "Settings "
menu of the navigation application.
F

Sel
ect " Navigation updates " in the
" Settings " menu.
F

Y
ou should indicate whether you wish to
prepare a
USB device to download updates. The system starts to prepare the USB device.
-

I
f the system continues to ask you to
insert a
USB device, make sure that
your USB device meets the conditions
above and try again.
-

I
f you connect several USB devices,
the system asks you to remove the
devices so that only the device being
prepared is connected.
-

I
f there is not enough space on the
USB device, the system asks you to
use another USB device.
-

I
f you connect a USB device already
containing files, the system warns you
that these files may be deleted.
The following message appears when the USB
device is ready:
" Navigation updates "
The USB device is now prepared and
you can safely remove it. F
Sel
ect "
Ye s".
F
I
nsert the USB device into the USB port in
the central storage space , provided for
transferring data.
Touch screen Audio-Telematic system