2021 CITROEN C5 run flat

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).

15
Instruments
1Dynamic stability control (DSC)/Anti-slip
regulation (ASR)
Flashing.
DSC/ASR regulation is activated in the
event of a loss of grip or trajectory.
Fixed.
The DSC/ASR system has a fault.
Carry out (3).
Emergency brake malfunction (with
electric parking brake)
Fixed, accompanied by the
message "Parking brake fault".
Emergency braking does not deliver optimal
performance.
If automatic release is not available, use manual
release or carry out (3).
Hill start assistFixed, accompanied by the
message "Anti roll-back system
fault".
The system has a fault.
Carry out (3).
Post Collision Safety BrakeFixed, associated with the
Service warning lamp,
accompanied by the display of a message and
an audible signal.
The system has a fault.
Carry out (3) quickly.
Under-inflationFixed.
The pressure in one or more tyres is too
low.
Check the pressure of the tyres as soon as
possible.
Reinitialise the detection system after adjusting
the pressure.
Under-inflation warning lamp
flashing then fixed and Service
warning lamp fixed.
The tyre pressure monitoring system is faulty.
Under-inflation detection is no longer monitored.
Check the tyre pressures as soon as possible
and carry out (3).
Parking sensorsFixed, accompanied by an onscreen
message and an audible signal.
The system is deactivated.
Fixed, associated with the Service
warning lamp, accompanied by the
display of a message and an audible signal.
The system has a fault.
Carry out (3).
Active bonnetFixed, accompanied by the display of a
message.
The active bonnet has been triggered.
Do not touch the bonnet.
Call a roadside assistance provider or carry
out (3) while driving no faster than 19 mph (30
km/h).
AirbagsFixed, accompanied by the display
of a message.
One of the airbags or seat belt pyrotechnic
pretensioners is faulty.
Carry out (3).
Front passenger airbag (ON)Fixed.
The front passenger airbag is activated.
The control is set to the “ON” position.
In this case, do NOT install a "rearward
facing" child seat on the front passenger seat
- risk of serious injury!
Front passenger airbag (OFF)Fixed.
The front passenger airbag is deactivated.
The control is set to the "OFF "
position.
A "rearward facing" child seat can be installed,
unless there is a fault with the airbags (Airbags
warning lamp on).
Low fuel levelFixed, with the reserve level shown in red,
accompanied by an audible signal and
the display of a message.
When it first comes on, you have approximately
6 litres of fuel remaining in the tank (reserve).
Until the fuel level is topped up, this alert will
be repeated every time the ignition is switched
on, with increasing frequency as the fuel level
decreases and approaches zero.
Refuel without delay to avoid running out of fuel.

91
Driving
6fails to detect the key in the recognition zone, or
if the battery in the electronic key is flat.


► Place and hold the remote control against the
back-up reader .
►

Select mode
P on the automatic gearbox,
then depress the brake pedal.
►

Press the "
START/STOP" button.
The engine starts.
Back-up switch-off

If the electronic key is not detected or is no
longer in the recognition zone, a message appears in the instrument panel when closing a
door or trying to switch off the engine.
►

T
o confirm the instruction to switch off the
engine, press the " START/STOP" button for
approximately 5 seconds.
In the event of a fault with the electronic key,
contact a CITROËN dealer or a qualified
workshop.
Emergency switch-off
In case of emergency only, the engine can be
switched off without conditions (even when
driving).
►

Press the "
START/STOP" button for about
5
seconds.
Electric parking brake
In automatic mode, this system applies the
parking brake when the engine is switched off
and releases it when the vehicle moves off.




At any time, with the engine running:
► T o apply the parking brake, briefly pull the
control.
► To release it, briefly push the control while
pressing the brake pedal.
Automatic mode is activated by default.
This automatic operation can be deactivated in
certain situations.
Indicator lamp
This indicator lamp comes on both on the instrument panel and on the control to
confirm that the parking brake has been applied,
accompanied by display of the message
"Parking brake applied".
The indicator lamp goes out to confirm the
release of the parking brake, accompanied by
the display of the message " Parking brake
released ".
The indicator lamp flashes in response to a
manual request to apply or release the brake.
In the event of a battery failure, the
electric parking brake will not operate.
As a safety measure, if the parking brake is
not applied, immobilise the vehicle by placing
the supplied chock against one of the wheels.
Contact a CITROËN dealer or a qualified
workshop.

156
Practical information
Observe the legislation in force in your
country relating to the use of snow
chains and maximum authorised speeds.
Use only chains designed to be fitted to the type
of wheel fitted to the vehicle:
Original tyre size Maximum link size 215/65 R17 9 mm
205/55 R19 9 mm
For more information, contact a CITROËN dealer
or a qualified workshop.
Installation tips
► To fit the snow chains during a journey, stop
the vehicle on a flat surface at the side of the
road.
►

Apply the parking brake and position any
wheel chocks under the wheels to prevent
movement of the vehicle.
►


Fit the snow chains following the instructions
provided by the manufacturer

.
►

Move off gently and drive for a few moments,
without exceeding 31

mph (50 km/h).
►

Stop the vehicle and check that the snow
chains are correctly tightened.
It is strongly recommended that you
practise fitting the snow chains on a level
and dry surface before setting off.
Avoid driving with snow chains on roads that have been cleared of snow to avoid
damaging the vehicle's tyres and the road
surface. If the vehicle is fitted with alloy
wheels, check that no part of the chain or its
fixings is in contact with the wheel rim.
Energy economy mode
This system manages the duration of use of
certain functions, in order to conserve a sufficient
level of charge in the battery with the ignition off.
After switching off the engine, you can still
use functions such as the audio and telematic
system, the wipers and the dipped beam
headlamps or courtesy lamps, for a combined
duration of approximately 40 minutes.
Selecting the mode
A confirmation message is displayed when
energy economy mode is entered, and the active
functions are placed on standby.
If a telephone call is in progress at the
time, it will be maintained for around 10
minutes via the audio system’s hands-free
system.
Exiting the mode
These functions are automatically reactivated the
next time the vehicle is used.
To restore the use of these functions
immediately, start the engine and let it run:
– For less than 10 minutes, to use the
equipment for approximately 5 minutes.
–

For more than 10 minutes, to use the
equipment for approximately 30 minutes.
Let the engine run for the specified duration to
ensure that the battery charge is sufficient.
T

o recharge the battery, avoid repeatedly or
continuously restarting the engine.
A flat battery prevents the engine from starting.
For more information on the 12
V battery,
refer to the corresponding section.
Load reduction mode
This system manages the use of certain
functions according to the level of charge
remaining in the battery.
When the vehicle is being driven, the load
reduction function temporarily deactivates certain
functions, such as the air conditioning and the
heated rear screen.
The deactivated functions are reactivated
automatically as soon as conditions permit.
Bonnet
Stop & Start
Before doing anything under the bonnet,
you must switch off the ignition to avoid any

172
In the event of a breakdown
The headlamps have polycarbonate lenses with a protective coating:
–

Do not clean them with a dry or abrasive
cloth, nor with detergent or solvent
products.
–


Use a sponge and soapy water or a pH
neutral product.
–


When using a high-pressure washer on
persistent marks, do not keep the lance
directed towards the headlamps, lamps or
their edges for too long, so as not to damage
their protective coating and seals.
Light-emitting diode (LED)
headlamps and lamps
Replacement of this type of bulb
Contact a CITROËN dealer or a qualified
workshop.
Do not touch LED or Full LED
technology
headlamps - risk of electrocution!
Front lamps
Model with
LED technology headlamps


1.Daytime running lamps/Direction indicators
2. Dipped beam headlamps
3. Main beam headlamps
4. Daytime running lamps
5. Foglamps
Rear lamps

1.Direction indicators (LED)
2. Brake lamps (LED) 3.
Reversing lamps
4. Foglamps
Reversing lamps/Foglamps
► Identify the defective bulb then open the
cover located on the tailgate trim.


► Using a thin, flat blade screwdriver , unclip the
plastic cover.
►

Unscrew the nuts and remove them.
►


From the outside, carefully remove the lamp
by pulling it to the rear

.
►

Disconnect the lamp unit connector
.
►

T
urn the bulb holder of the faulty lamp unit a
quarter turn anti-clockwise and pull it out.
►

Remove the bulb and replace it.

174
In the event of a breakdown
Accessing the battery
The battery is located under the bonnet.

For access to the (+) terminal:
► Release the bonnet by pulling the internal
release lever
, then the external safety catch.
►

Raise the bonnet.
(+)

Positive terminal with a quick-release clamp.
(-) Negative terminal.
As the battery's negative terminal is not
accessible, a remote earth point is located near
the battery.
Starting using another battery
If the vehicle's battery is flat, the engine can be
started using a backup battery (either external or
from another vehicle) and jump leads or using a
battery booster.
Never start the engine by connecting a
battery charger.
Never use a 24
V or higher battery booster.
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 electricity-consuming equipment
on both vehicles (audio system, wipers,
lighting, etc.).
Make sure that the jump leads are well away
from the engine’s moving parts (fan, belt,
etc.).
Do not disconnect the (+) terminal while the
engine is running.


► Lift the plastic cover on the (+) terminal, if the
vehicle has one.
►

Connect the red cable to the (+) terminal of
flat battery

A (at the metal elbow), then to the
(+) terminal of the backup battery
B or of the
booster.
►

Connect one end of the green or black cable
to the (-) terminal of the backup battery

B or of
the booster (or to an earth point on the assisting
vehicle).
► Connect the other end of the green or black
cable to the earth point C .
►

Start the engine on the assisting vehicle and
leave it running for a few minutes.
►


Operate the starter on the broken down
vehicle and let the engine run.
If the engine does not start immediately

, switch
off the ignition and wait a few moments before
trying again.
►

W
ait for it to return to idle.
►

Disconnect the jump leads in reverse order.
►


Refit the plastic cover to the (+) terminal, if
the vehicle has one.
►


Allow the engine to run for at least
30

minutes, with the vehicle stationary, so that
the battery reaches an adequate state of charge.
Driving immediately without having
reached a sufficient level of charge may
affect some of the vehicle's functionalities.
Charging the battery using a battery
charger
For optimum service life of the battery, it is
essential to maintain an adequate state of
charge.
In some circumstances, it may be necessary to
charge the battery:
–

When using the vehicle mainly for short
journeys.
–


If the vehicle is to be taken off the road for
several weeks.

178
In the event of a breakdown
► Disconnect the (+) terminal by disconnecting
the red quick-release clamp: •

Raise lever

A
fully to release clamp
B
.
•

Remove clamp

B
by lifting it off.
Reconnection
Front battery:

► Connect the (+) terminal by connecting the
red quick-release clamp: •

Raise lever

A
fully.
•

Refit open clamp

B
on the (+) terminal.
•

Push clamp
B fully down.
•

Lower lever

A
to lock clamp B.
Central battery:
►

Connect the
(-) terminal using the black
quick-release connector.
Following reconnection
After reconnecting the battery, turn on the
ignition and wait 1 minute before starting the
engine, to enable the electronic systems to
initialise.
If minor problems nevertheless persist following
this operation, contact a CITROËN dealer or a
qualified workshop.
Referring to the relevant section, reinitialise
certain equipment:
–

Electronic key
.
–
Sunroof.
–

Electric windows.
–


Date and time.
–


Preset radio stations.
After reconnecting the battery, the message "Collision risk detection
system fault" is displayed on the instrument
panel when the ignition is switched on. This
operation is perfectly normal. The message
will disappear while driving.
Towing the vehicle
General recommendations
Observe the legislation in force in the
country where you are driving.
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 towing
arm; 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.
A professional towing service must be
called if:
–

Broken down on a motorway or main road.
–


Not possible to put
the gearbox into neutral,
unlock the steering, or release the parking
brake.
–

Not possible to tow a vehicle with an
automatic gearbox, with the engine running.
–


T

owing with only two wheels on the ground.
–

Four-wheel drive vehicle.
–


No approved towbar available.
Rechargeable hybrid vehicles
Before any intervention, with the ignition
on, depress the brake pedal and select mode
N, then switch off the hybrid system (READY
indicator lamp off).
Always call on professionals for recovery of
the vehicle on a flatbed lorry or trailer.
Use the towing eye only
to free the vehicle
if it is stuck, or to secure it for recovery on a
flatbed lorry or trailer.