B Button CITROEN C4 2023 Owner's Guide
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57
Ease of use and comfort
3It increases the effectiveness of demisting in 
winter, above 3°C. 
► 
Press knob 
 1 to switch the air conditioning 
on/off.
When the system is activated, the indicator lamp 
of the button comes on.
Air conditioning does not operate when  the air flow is deactivated.
To obtain cool air more quickly, enable interior 
air recirculation for a brief period. Then return 
to the intake of exterior air.
Switching off air conditioning may result in 
some discomfort (humidity, misting).
Maximum air conditioning
This function automatically adjusts the 
temperature setting to the lowest possible, the 
air distribution towards the central and side air 
vents, the air flow to maximum and activates 
interior air recirculation.
►
 
Press knob 
 2 to activate/deactivate the 
function (confirmed by the indicator lamp coming 
on/switching off).
Once the function is deactivated, the system 
returns to the previous settings.
Interior air recirculation
The intake of exterior air prevents the formation 
of mist on the windscreen and side windows.
Recirculating the interior air isolates the 
passenger compartment from outside odours 
and fumes and allows the desired passenger 
compartment temperature to be achieved more 
rapidly.
► Press this button to activate/deactivate 
the function (confirmed by the 
illumination/extinction of the indicator lamp).
This function is activated automatically  when reverse gear is engaged.
Front demisting 
- defrosting
With manual air 
conditioning
► Adjust the temperature to maximum (red).
►  Adjust the air flow to maximum.
► Press this button to activate the air 
distribution to the "Windscreen" position; 
its indicator lamp comes on.
►
 
Check that the recirculation of interior air is 
deactivated; its indicator lamp must be off.
►
 
Switch on the air conditioning by pressing the 
"
A/C" button; its indicator lamp comes on.
With automatic dual-zone 
air conditioning
Automatic Visibility programme
This mode allows the windscreen and side 
windows to be demisted or defrosted as quickly 
as possible.
► Press this button to activate/deactivate 
the mode (confirmed by the illumination/
extinction of the
  indicator lamp).
The programme automatically manages the air 
conditioning (depending on version), air flow 
and air intake, and provides optimum distribution 
towards the windscreen and side windows.
It is possible to manually change the air flow 
without deactivating the automatic Visibility 
programme.
With Stop & Start, when demisting has 
been activated, STOP mode is not 
available.
In wintry conditions, before moving off, 
remove all snow or ice on the windscreen 
near the camera.
Otherwise, the operation of the equipment 
using the camera may be affected.   
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Ease of use and comfort
Heated windscreen 
 
In cold weather, this function heats the entire 
windscreen and complements the Automatic 
Visibility programme to speed up the evacuation 
of elements that interfere with visibility (e.g.  dew, 
mist, frost, snow), located on either side of the 
windscreen.
It can be used both before setting off and while 
driving.
Switching on/off 
 
 
 
► With the engine running, press this button to 
activate/deactivate the function (confirmed by an 
indicator lamp).
The period of operation depends on the outside 
temperature. The function switches off automatically to 
prevent excessive power consumption.
Rear screen 
demisting/defrosting
This demisting/de-icing only works with the 
engine running.
It also demists/de-ices the door mirrors.
► Press this button to activate/deactivate 
the function (confirmed by the indicator 
lamp coming on/switching off).
The function can be activated whatever the  outside temperature may be.
The period of operation depends on the outside 
temperature.
Demisting/defrosting therefore switches 
off automatically to prevent an excessive 
consumption of electrical current.
Temperature pre-conditioning (Electric)
This function allows you to programme the 
temperature in the passenger compartment to 
reach a pre-defined, non-modifiable temperature 
(approx. 21°C) before you enter the vehicle, on 
the days and at the times of your choice.
This function is available when the vehicle is 
connected or not connected.
Programming
With MyCitroën Play or MyCitroën Drive
In the Climate > OPTIONS  menu:Select Temperature conditioning . 
►
 
Press 
 + to add a programme.
►
 
Select the time of entry into the vehicle and 
the desired days. Press 
OK.
►
 
Press 
 ON to activate this programme.
With MyCitroën Drive Plus
In the Climate touch screen application, 
select the Preconditioning  tab.
►
 
Press 
 + to add a programme.
►
 
Select the time of entry into the vehicle and 
the desired days. Press 
OK.
►
 
Press 
 ON to activate this programme.
The temperature pre-conditioning sequence 
begins approximately 45 minutes before the 
programmed time when the vehicle is connected 
(20
 
minutes when it is not connected) and is 
maintained for 10
  minutes after.
You can set multiple programmes.Each one is saved in the system.
To optimise the driving range, we recommend 
starting a programme while the vehicle is 
connected.
Programming can also be carried out 
from a smartphone using the  MyCitroën 
App application.   
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Ease of use and comfort
Mats
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.
Shark fin antenna 
 
A ventilation grille is present at the rear of the 
roof for cooling the shark fin antenna.
Any ventilation noise produced, with the ignition 
on or the engine running, is completely normal.
Courtesy lamps
1. Front courtesy lamp
2. Front reading lamps
3.Rear courtesy lamp
4. Rear reading lamps
Front and rear courtesy 
lamps
In this position, the courtesy lamp comes 
on gradually:
–
 
when the vehicle is unlocked.
–
 
when the key is removed from the ignition 
switch.
–
 
when a door is opened.
–
 
when the remote control locking button is 
activated, in order to locate the vehicle.
It switches off gradually:
–
 
when the vehicle is locked.
–
 
when the ignition is switched on.
–
 
30 seconds after the last door is closed.
Permanently off. 
Permanent lighting. 
In "Permanent lighting" mode, the lighting time 
varies according to the circumstances:   
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Safety
General safety 
recommendations
Do not remove the labels attached in 
different places on your vehicle. They 
include safety warnings as well as 
identification information for the vehicle.
For all work on your vehicle, use a 
qualified workshop that has the technical 
information, skills and equipment required, all 
of which a CITROËN dealer is able to 
provide.
Depending on country regulations, 
certain safety equipment may be 
mandatory: high visibility safety vests, 
warning triangles, breathalysers, spare bulbs, 
spare fuses, fire extinguisher, first aid kit, mud 
flaps at the rear of the vehicle, etc.
Installing electrical accessories:
–  The fitting of electrical equipment or 
accessories not approved by CITROËN may 
cause excessive current consumption and 
faults and failures with the electrical system 
of your vehicle. Contact a CITROËN dealer 
for information on the range of approved 
accessories.
–
 
As a safety measure, access to the 
diagnostic socket, used for the vehicle's 
electronic systems, is reserved strictly for 
CITROËN dealers or qualified workshops, 
equipped with the special tools required (risk 
of malfunctions of the vehicle's electronic 
systems that could cause breakdowns or 
serious accidents). The Manufacturer cannot 
be held responsible if this advice is not 
followed.
–
 
Any modification or adaptation not intended 
or authorised by CITROËN or carried out 
without meeting the technical requirements 
defined by the Manufacturer will result in the 
suspension of the commercial warranty
.
Installation of accessory radio 
communication transmitters
Before installing a radio communication 
transmitter with an external aerial, you must 
without fail contact a CITROËN dealer for 
the specification of transmitters which can 
be fitted (frequency, maximum power, aerial 
position, specific installation requirements), 
in line with the Vehicle Electromagnetic 
Compatibility Directive (2004/104/EC).
Declarations of conformity for radio 
equipment
The relevant certificates are available on the 
brand website:
http://service.citroen.com/ACddb/
Hazard warning lamps 
 
 
 
► Pressing this red button causes all the 
direction indicators to flash.
They can work with the ignition switched off.
Automatic operation of  hazard warning lamps
When braking in an emergency, depending on 
the rate of deceleration, the hazard warning 
lamps come on automatically. They switch off 
automatically when you next accelerate.
They can be turned off by pressing the button 
again.   
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Safety
5Horn 
 
► Press the central part of the steering wheel.
Pedestrian horn (Electric)
This system alerts pedestrians that the vehicle is approaching.
The pedestrian horn operates once the vehicle 
is moving and at speeds of up to 19 mph 
(30
  km/h), in forward or reverse gear.
This function cannot be deactivated.
Malfunction
In the event of a malfunction, this warning 
lamp lights up on the instrument panel.
Have it checked by a CITROËN dealer or a 
qualified workshop.
* In accordance with  the general conditions of use of the service, available from dealers an\
d subject to technological and technical limitations.
**  Depend ing on the geographic coverage provided by the "eCall (SOS)" and "ASSISTANCE" systems. 
The list of countries covered and the telematic services provided is ava\
ilable from dealers or on the website for your country.
Emergency or assistance 
call
 
 
 
 
1. eCall (SOS)
2. ASSISTANCE
eCall (SOS)
Your vehicle may be fitted with the eCall (SOS) 
system either as standard or as an option.
The eCall
  (SOS) system provides direct contact 
to the emergency services and is fully built 
into the vehicle. This contact is made either 
automatically via the sensors built into the 
vehicle, or by pressing button  1.
According to the country of sale, the eCall
  (SOS) 
system
  corresponds to the systems PE112, 
ERAGLONASS, 999, etc.
The eCall
  (SOS) system is activated by default.
► To make an emergency call manually, press 
button 1 for more than 2   seconds.
The lit indicator lamp and a voice message 
confirm that the call has been made to the 
emergency services*.
The eCall
  (SOS) system immediately locates 
your vehicle and puts you in contact with the 
appropriate emergency services**.
►
 
Pressing again immediately cancels the 
request.
The indicator lamp flashes while the vehicle 
data is being sent, and then remains lit when 
communication is established.
In the event that a serious accident is 
detected by the sensors built into the 
vehicle, such as the airbag control unit, an 
emergency call is made automatically.
The eCall (SOS) system is a public 
service of general interest and is 
free-of-charge.   
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Safety
5be notified of any rectification, erasure or 
restriction carried out in compliance with 
GDPR, unless it proves impossible or 
involves a disproportionate effort.
You also have the right to lodge a complaint 
with the respective data protection 
supervisory authority.
If you want to claim your above-mentioned 
rights please contact us per email at: 
privacyrights@stellantis.com.
For more information regarding our contact 
details please take a look at our Privacy & 
Cookies Policy on the brand's website.
ASSISTANCE
► If the vehicle breaks down, press button 2  
for more than 2 seconds to request assistance 
(confirmed by a voice message*).
►
 
Pressing again immediately cancels the 
request.
Privacy mode allows you to manage the 
level of sharing (data and/or location) 
between your vehicle and CITROËN.
It can be configured in the  Settings touch 
screen menu or application, depending on the 
audio equipment.
* Depending on the geographic coverage of the "eCall (SOS)" and "ASSISTANCE" systems and the official national language chosen by the owner of the 
vehicle. 
The list of countries covered and the telematic services provided is ava\
ilable from dealers or on the website for your country.
By default, depending on equipment, 
deactivate/reactivate geolocation by 
simultaneously pressing the 2 buttons, then 
press the "ASSISTANCE" button to confirm.
If you purchased your vehicle outside the 
CITROËN dealer network, you are 
invited to have a dealer check the 
configuration of these services and, if desired, 
modify it as required. In a multilingual country, 
services can be configured to use the official 
national language of your choice.
For technical reasons and in particular to 
improve the quality of telematics services 
provided to customers, the Manufacturer 
reserves the right to carry out updates to the 
vehicle's on-board telematics system at any 
time.
Vehicles equipped with MyCitroën 
Drive Plus
During an update to the vehicle's on-board 
telematics system, the ASSISTANCE system 
will be unavailable.
If you benefit from the Citroën Connect 
Box offer with the SOS and Assistance 
Pack included, there are additional services 
available to you in your personal space, via 
the website for your country.
For information about the SOS and 
Assistance Pack, please refer to the general 
conditions for these services.
Electronic stability control 
(ESC)
The electronic stability control programme  includes the following systems:
–
 
Anti-lock braking system (ABS) and Electronic 
brake force distribution (EBFD).
–
 
Emergency braking assistance (EBA).
–
 
Post Collision Safety Brake (PCSB).
–
 
Anti-slip regulation (ASR).
–
 
Dynamic stability control (DSC).
Anti-lock braking system (ABS)/Electronic brake force 
distribution (EBFD)
These systems enhance the vehicle’s stability 
and handling during braking, and enable greater 
control while cornering, particularly on poor or 
slippery road surfaces.   
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Safety
This system reduces the pressure of the seat 
belt on the chest of the occupant, thus improving 
their protection.
In the event of an impact
Depending on the nature and 
seriousness of the impacts, the pyrotechnic 
device may trigger before and independently 
of airbag deployment. Deployment of the 
pretensioners is accompanied by a slight 
discharge of harmless smoke and a noise, 
due to the activation of the pyrotechnic 
cartridge incorporated in the system.
In all cases, the airbag warning lamp comes 
on.
Following an impact, have the seat belt 
system checked, and if necessary replaced, 
by a CITROËN dealer or a qualified 
workshop.
Front seat belts
The front seat belts are fitted with a pyrotechnic 
pretensioning system and a force limiting 
system.
Rear seat belts 
 
Each of the rear seats has a three-point seat belt 
with inertia reel.
The outer seats are fitted with a pyrotechnic 
pretensioning and force limiting system.
Fastening
► Pull the strap, then insert the tongue into the 
buckle.
►
 
Check that the seat belt is fastened correctly 
by pulling on the strap.
Unfastening
► Press the red button on the buckle.
►  Guide the seat belt as it is reeled in.
Seat belts warning lamps 
display
 
 
 
 
1. Front left seat belt warning lamp
2. Front right seat belt warning lamp
3. Rear left seat belt warning lamp
4. Rear centre seat belt warning lamp
5. Rear right seat belt warning lamp
Not fastened/unfastened warning lamp
It comes on in red on both the instrument panel 
and on the seat belts warning lamps display as 
soon as the system detects that a seat belt is not 
fastened or has been unfastened.
Type 1
Front seat belt not fastened alert
When the ignition is switched on, if the 
driver or front passenger has not fastened their 
seat belt, the corresponding warning lamp ( 1 or 
2) comes on in red. At a speed greater than 12 
mph (20
  km/h), the warning lamp flashes red, 
accompanied by an audible signal for around 2 
minutes. After this time has elapsed, the warning 
lamp remains on fixed in red until the seat belt is 
fastened.   
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Driving
Switching off the engine
► Immobilise the vehicle.
►  With the engine at idle, turn the key to 
position  1
.
►
 
Remove the key from the ignition switch.
►
 
T
 o lock the steering column, turn the steering 
wheel until it locks.
To facilitate unlocking of the steering  column, it is recommended that the 
wheels be returned to the straight ahead 
position before switching off the engine.
Never switch off the ignition before the 
complete immobilisation of the vehicle. 
With the engine off, the braking and steering 
assistance systems are also cut off - risk of 
loss of control of the vehicle!
Check that the parking brake is correctly 
applied, particularly on sloping ground.
When leaving the vehicle, keep the key in 
your possession and lock the vehicle.
Energy economy mode
After the engine has stopped (position  1. Stop), 
for a maximum combined duration of 30 minutes, 
you can still use functions such as the audio and 
telematics system, courtesy lamps or dipped 
beam headlamps.
For more information on  Energy 
economy mode, refer to the 
corresponding section.
Key left in
When the driver's door is opened, a 
message is displayed, accompanied by an 
audible signal, if the key has been left in the 
ignition switch in position  1.
If the key has been left in the ignition switch 
in position  2, the ignition will be switched off 
automatically after one hour.
To switch the ignition back on, turn the key to 
position  1, then back to position 2.
Starting/switching off the 
engine with Keyless Entry 
and Start
The electronic key must be present in the 
passenger compartment.
The electronic key is also detected in the 
boot.
If the electronic key is not detected, a 
message is displayed.
Move the electronic key so that the engine 
can be started or switched off.
If there is still a problem, refer to the "Key 
not detected - Back-up starting or Back-up 
switch-off" section.
Starting 
 
► With a  manual gearbox, place the gear lever 
in neutral and fully depress the clutch pedal.
►
 
With an 
 automatic gearbox, select mode   P 
or
  N and press the brake pedal.
►
 
Press the "
 START/STOP" button while 
maintaining pressure on the pedal until the 
engine starts.
Diesel engines
In negative temperatures and/or when the 
engine is cold, starting takes place only after the 
preheating warning lamp goes out.
If this warning lamp comes on after 
pressing the " START/STOP" button:
►
 
Keep the pedal fully depressed and do not 
press the "
START/STOP" button again until the 
engine is running.
In all circumstances, if one of the starting 
conditions is not met, a message is displayed.
In some circumstances, a message indicates 
that it is necessary to turn the steering wheel    
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Driving
6while pressing the "START/STOP" button to 
assist unlocking of the steering column.
Petrol engines
With Petrol engines, after a cold start, 
pre-heating the catalytic converter can cause 
noticeable engine vibrations, for anything up 
to 2 minutes (accelerated idle speed).
If the engine stalls, release the clutch 
pedal and fully depress it again, the 
engine will restart automatically.
Switching off
► Immobilise the vehicle using the parking 
brake.
►
 
With a 
 manual gearbox, ideally put the gear 
lever into neutral.
►
 
With an 
 automatic gearbox, ideally select 
mode
  P or   N.
►
 
Press the "
 START/STOP" button.
In some circumstances, it is necessary to turn 
the steering wheel to lock the steering column.
On certain versions with an automatic gearbox 
(EAT8), the steering column does not lock, but 
the gearbox locks in mode  P.
If the vehicle is not immobilised, the 
engine will not stop.
With the engine off, the braking and 
steering assistance systems are also cut 
off - risk of loss of control of the vehicle!
Never leave your vehicle with the 
electronic key still inside.
Switching on the ignition 
without starting the engine
 
 
With the electronic key in the passenger 
compartment, pressing the " START/STOP" 
button, without depressing any of the pedals , 
allows the ignition to be switched on without 
starting the engine.
►
 
Press this button again to switch off the 
ignition and allow the vehicle to be locked.
Key not detected
Back-up starting
A back-up reader is fitted to the steering column, 
to enable the engine to be started if the system 
fails 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 
reader .
►
 
W
 ith a manual gearbox, place the gear lever 
in neutral, then fully depress the clutch pedal.
►
 
W
 ith an automatic gearbox or a drive 
selector, select mode
  P, 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    
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Driving
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.
In this case, the steering column locks as soon 
as the vehicle stops.
Starting/Switching off the 
electric motor
Starting
The drive selector must be in mode  P.
►  If using a remote control key , depress the 
brake pedal and turn the key until it reaches 
position  3 (Start).
►
 
If using
   Keyless Entry and Start, depress the 
brake pedal and briefly press the "START/STOP" 
button.
►
 
Keep your foot on the brake pedal until the 
READY
 indicator lamp comes on and an audible 
signal is emitted, indicating that the vehicle is 
ready to drive.
► 
With your foot on the brake, select mode
   D 
or R.
►
 
Release the brake pedal, then accelerate.
On starting, the instrument panel lights up and 
the power indicator cursor moves to the "neutral" 
position. 
The steering column automatically 
unlocks (you may hear a sound and feel the 
steering wheel move).
Switching off
► If using a remote control key ,   turn the key 
fully to position  1 (Stop).
►
 
If using Keyless Entry and Start, press the 
"
START/STOP" button.
Before exiting the vehicle, check that:
–
 
The drive selector is in mode  P
.
–
  The  READY indicator lamp is off.
The drive selector moves automatically 
to mode P when the motor is switched off 
or when the driver's door is opened.
If the driver's door is opened while the 
required conditions for switching off are 
not met, an audible signal is emitted, 
accompanied by the display of a warning 
message.
For the procedures for switching on the 
ignition without starting the engine and 
those for back-up starting/switching off using 
the Keyless Entry and Start system, refer to 
the   Starting/Switching off the engine 
using
  Keyless Entry and Start   section.
Manual parking brake
Release 
 
► Pull the parking brake lever up slightly , press 
the release button, then lower the lever fully.
 / When driving the vehicle, if this 
warning lamp and the  STOP 
warning lamp come on, accompanied by an 
audible signal and the display of a message, this 
means that the parking brake is still applied or 
has not been fully released.
Application
► Pull the parking brake lever up to immobilise 
the vehicle.
When parking on a slope, turn the 
wheels against the kerb, apply the 
parking brake, engage a gear and switch off 
the ignition.