2023 CITROEN C5 X ECU

14
Instruments
Identify the cause of the fault using the message
displayed on the instrument panel.
You may be able to deal with some faults
yourself, such as changing the battery in the
remote control.
For other faults, such as with the tyre under-
inflation detection system, carry out (3).
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 on the instrument panel, then carry
out (3).
Fixed, accompanied by the message
"Parking brake fault".
Automatic release of the electric parking brake is
unavailable.
Carry out (2).
Malfunction (with electric parking brake)Fixed, accompanied by the
message "Parking brake fault".
The vehicle cannot be immobilised with the
engine running.
If manual application and release commands are
not working, the electric parking brake control
lever is faulty.
The automatic functions must be used at all
times and are automatically re-enabled in the
event of a control lever fault.
Carry out (2).
Fixed, accompanied by the
message "Parking brake
fault".
The parking brake is faulty: manual and
automatic functions may not be working.
When stationary, to immobilise the vehicle:
►

Pull and hold the control lever for
approximately 7 to 15 seconds, until the indicator
lamp lights up on the instrument panel.
If this procedure does not work, secure the
vehicle:
►


Park on a level surface.
►


With an automatic gearbox, select

P
, then
place the supplied chocks against one of the
wheels.
Then carry out (2).
Automatic functions deactivated (electric
parking brake)
Fixed.
The "automatic application" (on switching
off the engine) and "automatic release" (on
acceleration) functions are deactivated.
If automatic application/release is no longer
possible:
►

Start the engine.
►


Use the control to apply the parking brake.
►


T

ake your foot fully off the brake pedal.
►

Hold the control pressed in the release
direction for between 10 and 15 seconds.
►


Release the control.
►


Depress and hold the brake pedal.
►


Pull the control in the application direction for
2


seconds. ►

Release the control and the brake pedal.
BrakingFixed.
A minor fault with the braking system has
been detected.
Drive carefully.
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).
Engine self-diagnostic systemFlashing.
The engine management system has a
fault.
There is a risk that the catalytic converter will be
destroyed.
You must carry out (2).
Fixed.
The emissions control system has a fault.
The warning lamp should go off when the engine
is started.
Carry out (3) without delay.
Fixed.
A minor engine fault has been
detected.
Carry out (3).

29
Access
2taking the Keyless Entry and Starting
system’s electronic key with you.
Be aware of the risk of theft of the vehicle if
the key is present in one of the defined areas
while the vehicle is unlocked.
In order to preserve the battery in the
electronic key and the vehicle's battery:
–

The unlock on approach function (zone

C
)
automatically switches to standby mode
after several days (approximately one week)
without being used. To unlock the vehicle, use
the remote control or press on one of the door
handles. The next time the vehicle is started,
the automatic unlocking and locking functions
will be reactivated.
–

If the welcome lighting is triggered
several times in succession without the
vehicle subsequently being started, it will be
deactivated.
–


All "hands-free" functions switch to
extended standby mode after 21 days of non-
use.

To restore these functions, unlock the
vehicle using the remote control and start the
engine.
Electrical interference
The electronic key may not operate
if close to certain electronic devices (e.g.
telephones (switched on or on standby),
laptop computers, strong magnetic fields). If
this is the case, move the electronic key away
from the electronic device.
Central locking



Manual
► Press this button to lock/unlock the vehicle
(doors and boot) from inside the vehicle.
The indicator lamp comes on to confirm the
central locking of the vehicle.
Central locking does not take place if any
of the doors are open.
When locking/deadlocking from the
outside
When the vehicle is locked or deadlocked
from the outside, the indicator lamp flashes
and the button is deactivated.
►

After normal locking, pull one of the
interior door controls to unlock the vehicle.
►


After deadlocking, you must use the
remote control, the "Keyless Entry and
Starting" system or the built-in key to unlock
the vehicle.
Automatic (anti-intrusion security)
The doors and boot lock automatically while
driving (speed above 6 mph (10
km/h)).
To deactivate/reactivate this function (activated
by default):
►

Press the button until a confirmation
message appears.
Transporting long or voluminous
objects
Press the central locking control to drive
with the boot open and the doors locked.
Otherwise, every time the speed of the
vehicle exceeds 6 mph (10 km/h), the sound
of the locks rebounding will be heard and an
alert will be displayed.
Back-up procedures
Lost keys, remote control,
electronic key
Go to a CITROËN dealer with the vehicle's
registration certificate, your personal
identification documents and if possible, the label
bearing the key code.

31
Access
2Battery type: CR2032/3 volts.

► Unclip the cover by inserting a small
screwdriver in the slot and lift the cover .
►

Remove the flat battery from its housing.
►


Put the new battery in place, respecting the
polarity

. Start by inserting it into the contacts
located in the corner, then clip the cover onto
the unit.
►

Reinitialise the remote control.
For more information on Reinitialising the
remote control

, refer to the corresponding
section.
Do not throw remote control batteries
away, as they contain metals that are
harmful to the environment. Take them to an
approved disposal point.
This product contains a coin / button cell battery.
Do not ingest battery. Chemical Burn Hazard.
If the coin / button cell battery is swallowed,
it can cause severe internal burns in just 2
hours and can lead to death.
If you think coins / buttons cell battery might
have been swallowed or placed inside any
part of the body, seek immediate medical
attention.
Keep new and used batteries away from
children.
If the battery compartment does not close
securely, stop using the product and keep it
away from children.
Risk of explosion if the coin / button cell
battery is replaced by an incorrect type.
Replace the coin / button cell battery with the
same type.
Risk of explosion or the leakage of
flammable liquid or gas.
Do not use in /store in /bring into environment
of extremely high temperature or extremely
low pressure due to the very high altitude.
Do not attempt to burn, crush, or cut used
coin / button cell battery.
Reinitialising the remote
control
Following replacement of the battery or in
the event of a fault, it may be necessary to
reinitialise the remote control.


► Insert the mechanical key (incorporated into
the remote control) into the lock to open the
vehicle.
►

Place the electronic key against the back-up
reader on the steering column and hold it there
until the ignition is switched on.
►


W
ith an automatic gearbox, while in mode
P, depress the brake pedal.
►

Switch on the ignition by pressing the
"

START/STOP" button.
If the fault persists after reinitialisation, contact a
CITROËN dealer or a qualified workshop without
delay.
Doors
Opening
From outside
► After unlocking the vehicle or with the
"Keyless Entry and Starting" system electronic
key in the recognition zone, pull the door handle.

33
Access
2To avoid the risk of injury through pinching or trapping, before and during
operation of the motorised tailgate:
–

ensure that there is no-one close to the
rear of the vehicle.
–


monitor the activity of the rear passengers,
particularly any children.
Bicycle carrier/Towing device
The motorised tailgate is not designed to support
a bicycle carrier.
When installing a bicycle carrier on the towing
device with connection of the cable to the trailer
socket, the motorised operation of the tailgate
will be automatically deactivated.
If using a towing device or bicycle carrier
not recommended by CITROËN, it is
essential to deactivate the motorised
operation of the tailgate.
Motorised operation
The motorised operation of the tailgate is configured in the Settings
> Vehicle
touch screen application.


There are several ways of operating the tailgate:
A. Using the Keyless Entry and Starting
system’s electronic key
B. Using the exterior tailgate control
C. Using the interior tailgate control
D. Using the control on the dashboard
Opening
► A long press on the central button A of the
electronic key.
or
►

A
short press on the exterior tailgate control
B, with the electronic key on your person.
or
►

T
wo consecutive presses on the control D on
the dashboard.
The tailgate opens, either completely by default, or to the position memorised
beforehand.
If motorised operation is not activated, these
actions release the tailgate (partially-open
position).
When the vehicle is locked, the request to
open the boot with one of the controls A
or B unlocks the vehicle, or only the boot if
selective unlocking is activated, prior to the
opening of the boot.
Closing
► A short press on the interior tailgate control C.
It is possible to interrupt the operation of
the tailgate at any point.
Pressing one of these controls again
interrupts the movement that is underway.
Memorising an opening
position
To limit the opening angle of the motorised
tailgate:
►

move the tailgate to the desired position
manually or by pressing the button.
►


press button
C or the exterior control B for
more than 3 seconds (memorisation is confirmed
by a brief audible signal).
A new memorisation operation cancels the
previous one.

37
Access
2Locking the vehicle
with exterior perimeter
monitoring only
Deactivate the interior volumetric monitoring to
avoid the unwanted triggering of the alarm, in
certain cases such as:
–

Slightly open window
.
–

W
ashing the vehicle.
–

Changing a wheel.
–


T
owing the vehicle.
–

T
ransport on a ship or ferry.
Deactivating the interior volumetric
and anti-tilt monitoring
► Switch off the ignition and within 10 seconds
press the alarm button until its red indicator lamp
is on fixed.
►

Get out of the vehicle.
►


Immediately lock the vehicle using the remote
control or the Keyless Entry and Starting system.
Only the exterior perimeter monitoring is
activated; the button's red indicator lamp flashes
once every second.
To take effect, this deactivation must be carried out after each time the ignition is
switched off.
Reactivating the interior volumetric
and anti-tilt monitoring
► Deactivate the exterior perimeter monitoring
by unlocking the vehicle using the remote control
or the Keyless Entry and Starting system.
The indicator lamp in the button goes off.
►

Reactivate all monitoring by locking the
vehicle using the remote control or the Keyless
Entry and Starting system.
The red indicator lamp in the button once again
flashes every second.
Triggering of the alarm
This is indicated by sounding of the siren
and flashing of the direction indicators for 30
seconds.
Depending on the country of sale, certain
monitoring functions remain active until the alarm
has been triggered eleven times consecutively.
When the vehicle is unlocked using the remote
control or the Keyless Entry and Starting system,
rapid flashing of the red indicator lamp in the
button informs you that the alarm was triggered
during your absence. When the ignition is
switched on, this flashing stops.
Failure of the remote control
To deactivate the monitoring functions:
► Unlock the vehicle using the key in the front
left-hand door lock.
►

Open the door; the alarm is triggered. ►


Switch on the ignition; this stops the alarm.
The indicator lamp in the button goes off.
Locking the vehicle without
activating the alarm
► Lock the vehicle using the key (built-in the
remote control) in the front left-hand door lock.
Automatic activation
(Depending on version)
The system is activated automatically 2 minutes
after the last door or the boot is closed.
►

T
o avoid triggering the alarm on entering the
vehicle, first press the unlocking button on the
remote control or unlock the vehicle using the
“Keyless Entry and Starting” system.
Malfunction
When the ignition is switched on, the fixed
lighting of the red indicator lamp in the button
indicates a system malfunction.
Have it checked by a CITROËN dealer or a
qualified workshop.

42
Ease of use and comfort
When driving
Maintain a good driving position and hold the
steering wheel with both hands at the 'quarter to
three' position, so that you can easily and quickly
reach the controls behind and near the steering
wheel.
Never adjust the seats or steering wheel
when driving.
Always keep your feet on the floor.
Front seats
Before moving the seat backwards,
ensure that there is no person or object
that might prevent the full travel of the seat.
There is a risk of trapping or pinching
passengers if present in the rear seats or of
jamming the seat if large objects are placed
on the floor behind the seat.
Front head restraints
Adjusting the height

Upwards:
► Pull the head restraint up to the desired
position; you can feel the head restraint clicking
into position.
Downwards:
►

Depending on equipment, press lug A

or
button B and then, while still pressing, lower the
head restraint.
The head restraint is correctly adjusted when its upper edge is level with the top
of the head.
Adjusting the angle
(Depending on equipment)
Forwards:
►

move the lower part of the head restraint
forwards.
Rearwards:
► press and hold button B and push the lower
part of the head restraint rearwards.
Removing a head restraint
► Pull the head restraint fully up.
► Depending on equipment, press lug(s) A
or C
to release the head restraint and raise it fully.
►

Stow the head restraint securely
.
Refitting a head restraint
► Insert the head restraint rods into the guides
in the corresponding seat backrest.
►

Push the head restraint fully down.
►


If the vehicle is so equipped, press lug(s) A


or C to release the head restraint and push it
down.
►

Adjust the height of the head restraint.
Never drive with the head restraints
removed; they should be in place and
adjusted for the occupant of the seat.
Manual adjustments
Longitudinal

54
Ease of use and comfort
Operating conditions
– The function is only activated when the
ignition is switched off and the
vehicle
locked.
–

When the vehicle is not connected, the
function is only activated if the battery charge
level is greater than 20%.
–


When the vehicle is not connected and a
recurring programme is active (e.g. from Monday
to Friday), if two temperature pre-conditioning
sequences are run without the vehicle being
used, the programme will be deactivated.
Front fittings

1. Sun visor
2.Glove box
3. Door pockets
4. Front USB socket/12 V socket (120 W)
Storage compartment
Wireless smartphone charger
5. Cup holder
6. Storage compartment or Smartphone storage
7. Front armrest with storage
Front USB socket
8. Rear USB sockets
Make sure you do not leave any item in
the passenger compartment which could
act like a magnifying glass under the effect of
the sun's rays and cause a fire - risk of fire or
damage to interior surfaces!
Sun visor
► With the ignition on, raise the concealing
flap; depending on the version, the mirror is
illuminated automatically.
This sun visor is also equipped with a ticket
holder.
Glove box
► To open the glove box, push the button.
With the ignition on, the glove box is lit when
open (depending on version).
It houses the front passenger airbag deactivation
switch.
Never drive with the glove box open
when a passenger is at the front. It may
cause injury during sharp deceleration!
12 V accessory socket



► To use a 12 V accessory (max. power:
120 W), connect a suitable adaptor.
You can use this socket to connect a telephone
charger, a bottle warmer, etc.
The connection of an electrical device not approved by CITROËN, such as a
USB charger, may adversely affect the
operation of vehicle electrical systems,
causing faults such as poor radio reception or
interference with displays in the screens.
USB sockets
These symbols determine the type of use of a USB socket:
Power supply and recharging.

57
Ease of use and comfort
3Mats
Fitting

When fitting it on the driver's side, only use
the mountings present on the carpet (a "click"
indicates proper locking).
The other mats are simply laid over the carpet.
Removing/refitting
► To remove it on the driver's side, move the
seat backwards and unclip the fasteners.
►
T
o refit it, position the mat and secure it by
pressing down.
►

Check that the mat is secured correctly
.
To avoid any risk of jamming the pedals:– Only use mats which are suited to the
fixings already present in the vehicle; these
fixings must be used.
–

Never fit one mat on top of another
.
The use of mats not approved by CITROËN
may interfere with access to the pedals and
hinder the operation of the cruise control/
speed limiter.
The approved mats have two fasteners
located underneath the seat.
Courtesy lamps
1. Front courtesy and reading lamps
2.Rear reading lamps
Front courtesy lamp
It comes on gradually:
–
when the vehicle is unlocked.
–

when the ignition is switched off.
–


when a door is opened.
–


when the remote control locking button is
activated, in order to locate the vehicle.
It switches off:
– when the vehicle is locked.
–

when the ignition is switched on.
–


30 seconds after the last door is closed.
The front and rear reading lamps come on and
go off at the same time as the courtesy lamp.
Reading lamps
► With the ignition on, operate the
corresponding switch.
Take care not to place anything in contact with the courtesy lamps.
Interior ambient lighting
The interior ambient lighting casts soft lighting,
both day and night.
Interior ambient lighting is associated with
display lighting depending on the driving mode
selected.
You can activate/deactivate this function and adjust the brightness in the
Settings
> Brightness touch screen application.