instrument panel CITROEN C4 2023 Repair Manual

134
Driving
– Towing a trailer (particularly a trailer without its
own braking system).
–
Carrying long objects on roof bars.
–


Driving with snow chains.
–


Using an automatic car wash.
–


Performing any maintenance (e.g.
changing a
wheel, working inside the engine compartment).
–

Placing the vehicle on a rolling bench in a
workshop.
–


T
owing the vehicle.
–

Following a damage of the windscreen close
to the detection camera.
The system is automatically deactivated when the use of certain types of
"space-saver" spare wheel (smaller diameter)
is detected, or if a fault with the brake pedal
switch or at least two brake lamps is detected.
Following a severe crash (e.g.
with airbag
deployment), the system is automatically
deactivated.
Have it checked by a CITROËN dealer or a
qualified workshop.
In case the detection is degraded or
temporarily unavailable by environment
conditions, then a driver indication is not
displayed (because a driver action is not
requested).
It can be dangerous to drive if the brake
lamps are not in perfect working order.
The driver must not overload the vehicle (keep within the GVW limit and load
height limits for roof bars).
Collision Risk Alert
This function warns the driver if there is a risk
of collision with the preceding vehicle, or with a
pedestrian or cyclist.
Modifying the alert trigger threshold
The trigger threshold determines the sensitivity
with which the function warns of the risk of
collision.
The selected threshold is memorised when the
ignition is switched off.
With Touch screen BLUETOOTH audio
system or MyCitroën Play
The threshold is set via the Driving touch screen menu.
►

Select one of the three pre-defined
thresholds: "

Far", "Normal" or "Close".
With MyCitroën Drive
The threshold is set via the Vehicle touch screen menu.
►

Select one of the three pre-defined
thresholds: "

Far", "Normal" or "Close".
With MyCitroën Drive Plus
The threshold is set via the ADAS touch screen application.
► Select one of the 3 preset thresholds: " Far ",
"Medium" or "Near".
Operation
Depending on the collision risk detected by the
system and the alert trigger threshold chosen
by the driver, different levels of alert may be
triggered and displayed on the instrument panel.
The system takes into account the vehicle
dynamics, the difference speed of the own
vehicle and the object identified for the
collision risk, and the operation of the vehicle
(e.g.
actions on the pedals, steering wheel) to
trigger the alert at the most relevant moment.
(orange)
Level 1: visual alert only, warning that the
preceding vehicle is very close.
The message "Vehicle close" is displayed.
(red)
Level 2: visual and audible alert, warning
that a collision is imminent.
The message "Brake! " is displayed.
Level 3: a micro-braking may be given,
confirming the risk of collision (optional).
While approaching a vehicle too quickly,
the level 2 alert may be displayed
directly.
Important: the level 1 alert depends on the
trigger threshold selected. It reacts only on
moving vehicles. It is disabled automatically
at lower speed.

136
Driving
The brake pedal may feel hard and vibrate slightly while the function is
operating.
If the vehicle comes to a complete stop,
automatic braking is maintained for 1 to 2
seconds.
Malfunction
This warning lamp lights up on the instrument panel, if the automatic braking
system is reduced or degraded.
This is a normal behavior, which does not
request the support of a qualified workshop.
This may be caused by a reduced visibility
(e.g.

rain, fog, snow, blinding by low sun) or by
a real sensor blockage. In this case, stop the
vehicle and verify if the front camera or the front
radar is covered by dirt, snow, ice or anything
preventing the sensing.
In the event of a malfunction, this warning
lamp lights up on the instrument panel,
accompanied by the display of a message and
an audible signal.
Have it checked by a CITROËN dealer or a
qualified workshop.
If these warning lamps come on
after the engine has been switched
off and then restarted, contact a CITROËN
dealer or a qualified workshop to have the
system checked.
These warning lamps light up on the instrument panel and/or in the
warning lamp display for seat belts and front
passenger airbag to indicate that the driver's
and/or front passenger's seat belt is not fastened
(depending on version). The automatic braking
system is deactivated until the seat belts are
fastened.
Distraction detection
For more information, refer to the
General recommendations on the use
of driving and manoeuvring aids .
Depending on version, the function consists of
either the "Coffee Break Alert" system alone or
combined with the "Driver Attention Warning"
system.
These systems are in no way designed to keep the driver awake or to prevent
the driver from falling asleep at the wheel.
It is the driver’s responsibility to stop if feeling
tired.
Take a break if you are feeling tired or at least
every 2 hours.
Activation/Deactivation
By default, the function is automatically activated
at every engine start.
With Touch screen BLUETOOTH audio
system or MyCitroën Play
The settings are changed via the Driving
touch screen menu.
With MyCitroën Drive
The settings are changed via the Vehicle
touch screen menu.
With MyCitroën Drive Plus
The settings are changed via the ADAS
touch screen application.
Coffee Break Alert
The system triggers an alert when it detects that the driver has not taken a
break after two hours of driving at a speed above
43 mph (70
km/h).
This alert is issued via the display of a message
encouraging the driver to take a break,
accompanied by an audible signal.
If the driver does not follow this advice, the alert
is repeated hourly until the vehicle is stopped.
The system resets itself if one of the following
conditions is met:
–

With the engine running, the vehicle has been
stationary for more than 15 minutes.
–


The ignition has been switched off for a few
minutes.
–


The driver's seat belt is unfastened and their
door is opened.

138
Driving
Adjusting the audible signal
(With MyCitroën Drive or MyCitroën
Drive Plus)
Pressing this button opens the window
for adjusting the volume of the audible
signal.
Visual assistance

This supplements the audible signal, without
taking account of the vehicle's trajectory, by
displaying bars on the screen that represent the
distance between the obstacle and the vehicle
(white: more distant, orange: close, red: very
close).
When the obstacle is very close, the "Danger"
symbol is displayed on the screen.
Front parking sensors
Supplementing the rear parking sensors, the
front parking sensors are triggered when an
obstacle is detected in front and the speed of the
vehicle is below 6 mph (10
km/h).
Front parking sensor operation is suspended if
the vehicle stops for more than three seconds in
forward gear, if an obstacle is no longer detected
or the vehicle speed exceeds 6 mph (10 km/h).
The sound emitted by the speaker (front or rear) locates the obstacle relative to
the vehicle, in front or behind it.
Side parking sensors

Using four additional sensors located on the
sides of the bumpers, the system records the
position of obstacles during the manoeuvre and
indicates them when they are located alongside
the vehicle.
Only fixed obstacles are indicated
correctly. Moving obstacles detected at
the beginning of the manoeuvre may be
indicated mistakenly, while moving obstacles
that appear alongside the vehicle but were
not previously recorded will not be indicated.
Objects memorised during the
manoeuvre will no longer be stored after
switching off the ignition.
Deactivation/Activation
(Depending on country of sale)
With Touch screen BLUETOOTH audio
system or MyCitroën Play
The settings are changed via the Driving
touch screen menu.
With MyCitroën Drive
The settings are changed via the Vehicle
touch screen menu.
With MyCitroën Drive Plus
The settings are changed via the ADAS
touch screen application.
If the function is deactivated, this indicator
lamp lights up on the instrument panel.
The system status is saved when the ignition is
switched off.


The rear parking sensors are deactivated automatically if a trailer or bicycle carrier
is connected to a towing device installed in
accordance with the Manufacturer's
recommendations.
In this case, the outline of a trailer is displayed
at the rear of the image of the vehicle.

139
Driving
6The parking sensors are deactivated while the
Park Assist function is measuring a space.
For more information on the Park Assist
function, refer to the corresponding section.
When starting the vehicle, the graphic
and audible aids are only available after
the touch screen has started up.
Operating limits
If the boot is heavily loaded, the vehicle may tilt,
affecting distance measurements.
Malfunction
In the event of a malfunction when
changing into reverse gear, these
warning lamps light up on the instrument panel,
accompanied by the display of a message and
an audible signal (short beep).
Have it checked by a CITROËN dealer or a
qualified workshop.
Reversing camera
For more information, refer to the
General recommendations on the use
of driving and manoeuvring aids .


The reversing camera is activated automatically
when reverse gear is engaged.
The image is displayed on the touch screen.
The reversing camera function may be
supplemented by the parking sensors.


The blue lines 1 indicate the general direction of
the vehicle (the gap corresponds to the width of
your vehicle including the mirrors).
The red line 2 represents a distance of about
30
cm beyond the edge of your vehicle's rear
bumper.
The green lines 3 represent distances of about 1
and 2 metres beyond the edge of your vehicle's
rear bumper.
The turquoise curves 4 show the maximum
turning angle in either direction.
C4
Opening the tailgate causes the display
to disappear.
Clean the reversing camera regularly
using a soft, dry cloth.
Top Rear Vision - 360 Vision
With MyCitroën Play or
MyCitroën Drive
For more information, refer to the
General recommendations on the use
of driving and manoeuvring aids .
With the engine running, these systems allow
views of your vehicle’s close surroundings to be
displayed on the touch screen using one camera
for Top Rear Vision and two cameras for 360
Vision.

150
Driving
If the vehicle has undergone any of the
following modifications, do not use the
function:
–

When carrying an object extending beyond
the dimensions of the vehicle (ladder on the
roof bars, bicycle carrier on the tailgate, etc.).
–


With a non-approved towball in place.
–


With snow chains fitted.
–


When driving on a small-diameter or
"space-saver" type spare wheel.
–


When the wheels fitted are a different size
from the original ones.
–


After modifying one or both bumpers
(added protection).
–


If the sensors have been repainted other
than by the CITROËN dealer network.
–


With sensors not approved for the vehicle.
Malfunctions
In the event of a power steering
malfunction, this warning lamp is
displayed on the instrument panel, accompanied
by a warning message.
You must stop the vehicle.
Stop as soon as it is safe to do so and
switch off the ignition.
Contact a CITROËN dealer or a qualified
workshop.
With MyCitroën Play or MyCitroën Drive
If the function cannot be activated, this
indicator lamp will flash briefly and an
audible signal will be emitted to indicate a
system malfunction.
If the malfunction occurs while the system is in
use, the indicator lamp goes off.
If a parking sensor malfunction occurs
during use, it is indicated by this warning
lamp coming and the display of a message. The
function is deactivated.
Contact a CITROËN dealer or a qualified
workshop.
With MyCitroën Drive Plus
If the function cannot be activated, a message
will pop up.
If a parking sensor malfunction occurs during
use, a message will pop up. The function is
deactivated.
Contact a CITROËN dealer or a qualified
workshop.

152
Practical information
Compatibility of fuels
Petrol fuels conforming to the EN228 standard
containing up to 5% and 10% ethanol
respectively.

Diesel fuels conforming to the EN590, EN16734
and EN16709 standards and containing up to
7%, 10%, 20% and 30% fatty acid methyl ester
respectively. The use of B20 or B30 fuels, even
occasionally, imposes special maintenance
conditions referred to as "Arduous conditions".

Paraffinic Diesel fuel conforming to the EN15940
standard.
The use of any other type of (bio) fuel (vegetable or animal oils, pure or diluted,
domestic fuel, etc.) is strictly prohibited (risk
of damage to the engine and fuel system).
The only fuel additives authorised for use are those that meet the B715001 (petrol)
or B715000 (Diesel) standards.
Diesel at low temperature
At temperatures below 0 °C (+32 °F), the
formation of paraffins in summer-type Diesel fuels could prevent the engine from operating
correctly
. In these temperature conditions, use
winter-type Diesel fuel and keep the fuel tank
more than 50 % full.
At temperatures below -15 °C (+5 °F) to avoid
problems starting, it is best to park the vehicle
under shelter (heated garage).
Travelling abroad
Certain fuels could damage your vehicle’s
engine.
In certain countries, the use of a particular
fuel may be required (specific octane rating,
specific trade name, etc.) to ensure correct
operation of the engine.
For all additional information, consult a dealer.
Refuelling
Fuel tank capacity: approximately 50 litres.
Reserve level: approximately 6 litres.
Low fuel level
When the low fuel level is reached, this
warning lamp lights up on the instrument
panel, accompanied by the display of a message
and an audible signal. When it first comes on,
about 6 litres of fuel remain.
Until sufficient fuel is added, this warning lamp
appears every time the ignition is switched on,
accompanied by the message and the audible
signal. When driving, this message and audible
signal are repeated with increasing frequency as
the fuel level drops towards 0.
You must refuel as soon as possible to avoid
running out of fuel.
For more information on Running out of fuel
(Diesel), refer to the corresponding section.
A small arrow by the warning lamp indicates which side of the vehicle the
fuel filler flap is located on.
Stop & Start
Never refuel with the engine in STOP
mode; you must switch off the ignition.
Refuelling
When refuelling, at least 5 litres must be added
in order to be registered by the fuel gauge.
Opening the filler cap may create a noise caused
by an inrush of air. This vacuum is normal,
caused by the sealing of the fuel system.
To refuel in complete safety:
►

Always switch off the engine.

161
Practical information
7For a full charge, follow the desired charging
procedure without pausing it, until it ends
automatically. Charging can be either immediate
or deferred (except fast public charger, mode 4).
You can stop domestic or accelerated charging
at any time by unlocking the vehicle and
removing the nozzle. For superfast charging,
refer to the fast public charger.
For more information on the charging displays
on the Instrument panel and the Touch screen,
refer to the corresponding section.
It is also possible to monitor the charging
progress using the MyCitroën App
application.
For more information on Remotely
operable additional functions , refer to the
corresponding section.
As a safety measure, the engine will not start if the charging cable is plugged into
the connector on the vehicle. A warning is
displayed on the instrument panel.
Cooling the traction battery
The cooling fan in the engine
compartment comes on during charging to
cool the on-board charger and the traction
battery.
Low load / Driving
Driving when the charge level of the
traction battery is too low can lead to the
vehicle breaking down and can lead to
accidents or serious injuries. ALWAYS make
sure the traction battery has a sufficient
charge level.
Low load / Parking
If the outside temperature is negative,
it is recommended not to park your vehicle
outside for several hours at a low load (less
than 20%).
Vehicle in storage for more than
1 month
In the event of a long period of non-use of
the vehicle (beyond 4
weeks) without the
possibility of charging when restarting, the
self-discharge may make it impossible to
restart if the traction battery charge level
is a low or very low, especially at negative
ambient temperatures. ALWAYS make sure
that the traction battery has a charge between
20% and 40% if you do not plan to use your
vehicle for several weeks.
Do not connect the charging cable.
Always park the vehicle in a place with
temperatures between -10°C and 30°C
(parking in a place with extreme temperatures
can damage the traction battery).
Disconnect the cable from the (+) terminal
of the accessory battery in the engine
compartment.
Connect a 12 V battery charger to the (+)
and (-) terminals of the accessory battery
about every 3 months in order to recharge the
accessory battery and maintain an operating
voltage.
Precautions
Our electric vehicles have been developed in
accordance with the recommendations on the
maximum limits for electromagnetic fields, as
issued by the International Commission on Non-
Ionizing Radiation Protection
(ICNIRP - 1998
Guidelines).
Wearers of pacemakers or equivalent
devices
Ask your doctor about what precautions you should take, or ask the manufacturer
of your implanted electro-medical device about
whether its operation is guaranteed in an
environment which complies with the ICNIRP
recommendations.
If in doubt
Domestic or accelerated charging: do
not remain inside or near the vehicle, or near
the charging cable or charging unit, even for
a short time.
Superfast charging: do not use the system
yourself and avoid approaching public fast
charging points. Leave the area and ask a
third party to recharge the vehicle.

163
Practical information
7the driver's door will display the charge level
on the instrument panel for about 20 seconds.
Accelerated charging, mode 3

► Follow the accelerated charging unit
(W allbox) user instructions.
►

Remove the protective cover from the
charging nozzle.
►


Insert the nozzle into the charging connector
.
The start of charging is confirmed when the
charging indicator lamp in the flap flashes green.
If this is not the case, charging has not started;
restart the procedure, ensuring that the
connection has been properly established.
The red indicator lamp in the flap comes on to
indicate that the nozzle is locked.
Superfast charging, mode 4

► Depending on version, remove the protective
cover from the lower part of the connector .►

Follow the instructions for use of the fast
public charger and connect the cable from the
fast public charger
to the vehicle's connector.
The start of charging is confirmed by the flashing
green charging indicator lamp in the flap.
If this is not the case, charging has not started;
restart the procedure, ensuring that the
connection is properly established.
The red indicator lamp in the flap comes on to
indicate that the nozzle is locked.
Deferred charging
The deferred charging start time is set to
midnight by default.
Depending on equipment, this time can be
changed.
Settings
On a smartphone or tabletYou can programme the deferred charging function at any time via the
MyCitroën App application.
For more information on Remotely operable
additional functions , refer to the corresponding
section.
In the vehicle, with MyCitroën Play or
MyCitroën Drive
► In the Energy touch screen menu,
select the Charge page.
►

Set the charging start time.
►


Press
OK.
The setting is saved in the system.
In the vehicle, with MyCitroën Drive Plus
► In the Energy touch screen
application, select the Charging tab.
►

Set the charging start time.
►


Press
OK.
Activation
Deferred charging is only possible with
modes 2 and 3.
►

After programming the deferred charging,
connect your vehicle to the desired charging
equipment.


► Lock the vehicle.
► Press this button in the flap within one
minute to activate the system (confirmed by the
charging indicator lamp coming on in blue).
Disconnection

Before disconnecting the nozzle from the
charging connector:
►

If the vehicle is unlocked, lock it and then
unlock it .

164
Practical information
► If the vehicle is locked, unlock it.
The red indicator lamp in the flap goes out to
confirm that the charging nozzle is unlocked.
►

Within
30 seconds, remove the charging
nozzle.
The charging indicator lamp comes on in white.
With selective door unlocking activated,
press the unlocking button twice to
disconnect the charging nozzle.
When charging is complete, the green
charging indicator lamp in the flap goes
out after about 2 minutes.
Domestic charging, mode 2
The end of charging is confirmed when the green
CHARGE indicator lamp on the control unit and
the green charging indicator lamp in the flap
come on fixed.
►

Replace the protective cover on the charging
nozzle and close the charging flap.
►


Disconnect the control unit end of the
charging cable from the domestic socket.
Accelerated charging, mode 3
The end of charging is indicated by the charging
control unit and by the fixed lighting of the green
indicator lamp in the flap.
►

Hang up the nozzle on the charging unit and
close the charging flap.
Superfast charging, mode 4
The end of charging is indicated by the charger
and by the fixed lighting of the green indicator
lamp in the flap.
► You can also pause charging by
pressing this button in the flap (in mode 4
only).
►

Hang up the nozzle on the charger
.
►

Depending on version, replace the protective
cover on the lower section and close the
charging flap.
When the charging nozzle is
disconnected, a message on the
instrument panel indicates that charging is
complete, even if the charging nozzle was
disconnected before full charging was
completed.
Towing device
Load distribution
► Distribute the load in the trailer so that the
heaviest items are as close as possible to the
axle, and the nose weight approaches the
maximum permitted without exceeding it.
Air density decreases with altitude, thus reducing
engine performance.
The maximum towable load
must be reduced by 10% per 1,000
metres of
altitude.
Use genuine towing devices and wiring
harnesses approved by CITROËN. We
recommend having them fitted by a CITROËN
dealer or a qualified workshop.
If not fitted by a CITROËN dealer, they must
still be fitted in accordance with the vehicle
manufacturer's instructions.
Certain driving or manoeuvring aid functions
are automatically deactivated while an
approved towing system is in use.
Comply with the maximum authorised
towable weight, as indicated on your
vehicle's registration certificate, on the
manufacturer's label and in the Technical
data section of this guide.
If using accessories attached to the
towing device (e.g. bicycle carriers, tow
boxes):
–

Comply with the maximum authorised nose
weight.
–


Do not transport more than 4 conventional
bicycles or 2 electric bicycles.
When loading bicycles onto a bicycle carrier
on a towball, be sure to place the heaviest
bicycles as close as possible to the vehicle.
Observe the legislation in force in the
country where you are driving.
Electric motor
An electric vehicle cannot under any
circumstances be fitted with a towing device.

169
Practical information
7continue to use functions such as the audio and
telematics system, dipped beam headlamps or
courtesy lamps.
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/
Accessories 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
risk of the engine restarting automatically.
Take care with objects or clothing that could
be caught in the blades of the cooling fan
or in certain moving components - risk of
strangulation and serious injury!
Electric motor
Take care with objects or clothing that
could be caught in the blades of the cooling
fan or in certain moving components - risk of
strangulation and serious injury!
Before carrying out any work under the
bonnet, you must switch off the ignition, check
that the READY indicator lamp is off on the
instrument panel and disconnect the nozzle
from the charging connector if it is connected.
The location of the interior bonnet release lever prevents the bonnet being
opened when the left-hand front door is
closed.
When the engine is hot, handle the
exterior safety catch and the bonnet stay
with care (risk of burns), using the protected
area.
When the bonnet is open, take care not to
damage the safety catch.
Do not open the bonnet under very windy
conditions.
Cooling of the engine when stopped
The engine cooling fan may start after
the engine has been switched off.
Take care with objects or clothing that
could be caught in the blades of the fan!