2023 CITROEN C4 parking brake

2
Contents
 ■
Overview
 ■
Eco-driving
1Dashboard instrumentsDriver information 10
Instrument panels 10
Head-up display 12
Warning and indicator lamps 13
Indicators 19
Manual test 24
Total distance recorder 25
Lighting dimmer 25
Trip computer 25
5-inch touch screen 27
10-inch touch screen 27
Remotely operable additional functions
(Electric)
30
2AccessElectronic key with remote control function and
built-in key 32
Proximity Keyless Entry and Start 34
Central locking 36
Back-up procedures 37
Doors 39
Boot 40
Alarm 40
Electric windows 42
Sunroof 43
3Ease of use and comfortFront seats 45
Steering wheel adjustment 47
Heated steering wheel 47
Mirrors 48
Rear bench seat 49
Heating and Ventilation 51
Manual air conditioning 52
Dual-zone automatic air conditioning 53
Front demisting - defrosting 57
Heated windscreen 58
Rear screen demisting/defrosting 58
Temperature pre-conditioning (Electric) 58
Interior fittings 59
Courtesy lamps 62
Interior ambient lighting 63
Boot fittings 63
4Lighting and visibilityLighting control stalk 65
Direction indicators 66
Automatic illumination of headlamps 67
Headlamp beam height adjustment 67
Guide-me-home and welcome lighting 67
Automatic lighting systems - General
recommendations
68
Automatic headlamp dipping 69
Cornering lighting 70
Wiper control stalk 70
Intermittent wipers 71
Automatic wipers 72
Changing a wiper blade 73
5SafetyGeneral safety recommendations 74
Hazard warning lamps 74
Horn 75
Pedestrian horn (Electric) 75
Emergency or assistance 75
Electronic stability control (ESC) 77
Seat belts 79
Airbags 82
Child seats 84
Deactivating the front passenger airbag 86
ISOFIX child seats 87
i-Size child seats 89
Installing child seats 90
Child lock 92
6DrivingDriving recommendations 93
Starting / Switching off the engine with the key 95
Starting/Switching off the engine with Keyless
Entry and Start
96
Manual parking brake 98
Electric parking brake 99
6-speed manual gearbox 101
Automatic gearbox 101
Drive selector (Electric) 103
Driving modes 104
Hill start assist 105
Gear shift indicator 106
Stop & Start 106
Tyre under-inflation detection 108
Driving and manoeuvring aids - General
recommendations
109
Shortcuts for driving aids 111
Road signs recognition 111
Speed limiter 11 5
Cruise control - Specific recommendations 11 6
Cruise control 11 7
Highway Driver Assist 11 8
Adaptive cruise control 11 9
Lane positioning assist 123
Lane keeping assist 128
Blind spot monitoring 131
Active Safety Brake with Collision Risk Alert
and Intelligent emergency braking assistance
132
Distraction detection 136

4
Overview
Presentation
These illustrations and descriptions are intended
as a guide. The presence and location of certain
elements may vary depending on the version or
trim level.
Instruments and controls

1.Courtesy lamp/Front reading lamps
Emergency and assistance call buttons
Sunroof
Warning lamps display for seat belts and
front passenger airbag
2. Interior rear view mirror
3. Head-up display
4. Instrument panel
5. Fusebox
6. Electric windows
Electric door mirrors
7. Bonnet release
8. Smart Pad Support Citroën
9. Dashboard drawer
10. Glove box
Centre console

1.5-inch touch screen with Touch screen
BLUETOOTH audio system
or
10-inch touch screen with MyCitroën Play,
MyCitroën Drive or MyCitroën Drive Plus
2. Touch screen on/off and volume control
With MyCitroën Play or MyCitroën Drive:
Direct access to the Driving or Vehicle
menu
Access to the touch screen menus
With MyCitroën Drive Plus:
Access to the Shortcuts for driving aids
Access to the HOME pages
3. Hazard warning lamps
4. Central locking
5. Switching the engine on/off
6. Air conditioning
Heated seats
7. USB sockets (type A/type C)
8. Storage compartment or Wireless
smartphone charger
9. Gearbox or drive selector
10. Choice of driving mode
11 . Access to the Energy menu
12. Electric parking brake

6
Overview
– Domestic charging in mode 2 using a
domestic socket and associated charging cable
7
.
–

Accelerated charging in mode 3 using an
accelerated charging unit (W

allbox).
–

Superfast charging in mode 4 using a fast
public charger

.
The 400
V traction battery 2 uses Lithium-Ion
technology. It stores and supplies the energy
required for the operation of the electric motor,
air conditioning and heating. Its charge level is
represented by an indicator and a reserve power
warning lamp on the instrument panel.
The 12
V accessory battery 3 powers the
vehicle’s conventional electrical system. It is
recharged automatically by the traction battery
via the on-board charger.
The heat pump
4 provides passenger
compartment heating and regulates traction
battery and on-board charger cooling.
The on-board charger 5 manages the domestic
charging
(mode 2) and accelerated charging
(mode 3) of the traction battery as well as the
recharging of the 12
V accessory battery.
The electric motor
6 provides propulsion in
accordance with the selected driving mode and
driving conditions. It recovers energy during
vehicle braking and deceleration
phases.
Labels
“Ease of use and comfort - Rear bench seat -
Rear head restraints” section:


"Ease of use and comfort - Front fittings -
Wireless smartphone charger" section:


"Lighting and visibility - Exterior lighting
control stalk" and "In the event of a
breakdown - Changing a bulb" sections:


"Safety - Child seats - Deactivating the front
passenger airbag" section:




"Safety - ISOFIX mountings" section:
i-SizeTOP TETHER
"Driving - Electric parking brake" section:

"Driving - Stop & Start" section:

"Practical information - Compatibility of
fuels" section:




"Practical information - Charging system
(Electric)" section:








"Practical information - Charging the traction
battery (Electric)" section:


"Practical information - Bonnet" section:

"Practical information - Checking levels -
Engine coolant" section:

14
Dashboard instruments
System malfunction (Electric)Fixed.
A fault involving the electric motor or
traction battery has been detected.
Carry out (1) and then (2).
Cable connected (Electric)Fixed when the ignition is switched on.
The charging cable is connected to the
vehicle's connector.
Fixed when the ignition is switched on,
accompanied by a message.
It is not possible to start the vehicle while the
charging cable is connected to the vehicle’s
connector.
Disconnect the charging cable and close the
flap.
12 V battery chargeFixed.
The battery charging circuit is faulty
(e.g.

dirty terminals, loose or severed alternator
belt).
Carry out (1).
If the electric parking brake stops working,
immobilise the vehicle:
►

With the manual gearbox, engage a gear
.
►

With the automatic gearbox or drive selector
,
fit the chock against one of the wheels.
Clean and tighten the terminals. If the warning
lamp does not go off when the engine is started,
carry out (2).
BrakingFixed.
The brake fluid level in the braking circuit
has dropped significantly.
Carry out (1), then top up with fluid that complies
with the manufacturer's recommendations. If the
problem persists, carry out (2).
Fixed.
The electronic brake force
distribution

(EBFD) system is faulty.
Carry out (1) and then (2).
Manual parking brake (depending on
version)
Fixed.
The parking brake is applied or not
properly released.
Fixed.
The parking brake is applied or not
properly released.
Electric parking brakeFixed.
The electric parking brake is applied.
Flashing.
Application/release is faulty.
Carry out (1): park on flat ground (on a level
surface).
With a manual gearbox, engage a gear.
With an automatic gearbox or drive selector,
select mode
P.
Switch off the ignition and carry out (2).
Door(s) openFixed, associated with a message
identifying the access.
An audible signal supplements the alert if the
speed is higher than 6 mph (10
km/h).
A door or the boot is not properly closed.
Seat belts not fastened/unfastenedFixed or flashing, accompanied by an
increasing audible signal.
A seat belt has not been fastened or has been
unfastened.
Orange warning/indicator lamps
Service
Temporarily on, accompanied by the display of a message.
One or more minor 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.
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).

15
Dashboard instruments
1Fixed, accompanied by the message
"Parking brake fault".
Automatic release of the electric parking brake is
unavailable.
Carry out (2).
Service warning lamp fixed and
service spanner flashing then
fixed.
The servicing interval has been exceeded.
The vehicle must be serviced as soon as
possible.
Only with BlueHDi Diesel engines.
BrakingFixed.
A minor fault with the braking system has
been detected.
Drive carefully.
Carry out (3).
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 is
faulty.
The automatic functions must be used at all
times and are automatically reactivated in the
event of a fault with the control.
Carry out (2).
Fixed, accompanied by the
message "Parking brake
fault".
The electric parking brake is faulty: manual and
automatic functions may not be working.
When stationary, to immobilise the vehicle:
►

Pull the electric parking brake control and
hold it 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 a manual gearbox, engage a gear
.
►

With an automatic gearbox or drive selector
,
select

P, then place the supplied chock 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 electric 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.
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).
Power steeringFixed.
The power steering has a fault.
Drive carefully at moderate speed, then carry
out (3).
Engine self-diagnostic system (Petrol or
Diesel)
Flashing.
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.

16
Dashboard instruments
Engine self-diagnostics system (Petrol or
Diesel)
Fixed.
A minor engine fault has been
detected.
Carry out (3).
Dynamic stability control (DSC)/Anti-slip
regulation (ASR)
Flashing.
DSC/ASR system 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).
Dynamic stability control (DSC)/Anti-slip
regulation (ASR)
Fixed.
The system is deactivated. The DSC/ASR system is reactivated
automatically when the vehicle is started, and at
speeds above approximately 31 mph (50
km/h).
At speeds below 31 mph (50 km/h), it can be
reactivated manually.
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).
Engine preheating (Diesel)Temporarily on (up to approximately 30 seconds in
severe weather conditions).
When switching on the ignition, if the weather
conditions and the engine temperature make it
necessary.
Wait until the warning lamp goes off before
starting.
When the warning lamp goes off, starting will
occur immediately if you press and hold:
–

the clutch pedal with a manual gearbox. –


the brake pedal with an automatic gearbox.
If the engine does not start, make the engine
starting request again, while keeping your foot
on the pedal.
Particle filter (Diesel)Fixed, accompanied by an audible signal
and a message about the risk of particle
filter blockage.
The particle filter is nearing saturation.
As soon as traffic conditions permit, regenerate
the filter by driving at a speed of at least 37
mph
(60

km/h) until the warning lamp goes off.
Diesel fuel filter (Diesel)Fixed.
The Diesel fuel filter contains water.
Carry out (2) without delay. Risk of damaging the
fuel injection system!
AirbagsFixed, associated with the Service
warning lamp and 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!

93
Driving
6Driving recommendations
► Observe the driving regulations and remain
vigilant whatever the traffic conditions.
►

Monitor your environment and keep your
hands on the wheel to be able to react to
anything that may happen any time.
►


Drive smoothly
, anticipate the need for
braking and maintain a longer safety distance,
especially in bad weather.
►

Stop the vehicle before performing operations
that require sustained attention (e.g.

settings).
►

During long trips, take a break every 2 hours.
Important!
Never leave the engine running in a
closed space without sufficient
ventilation. Internal combustion engines emit
toxic exhaust gases such as carbon
monoxide. Danger of poisoning and death!
In very severe wintry conditions
(temperature below -23°C), let the engine
run for 4 minutes before moving off, to ensure
the correct operation and durability of the
mechanical components of your vehicle
(engine and gearbox).
Never drive with the parking brake
applied . Risk of overheating and
damaging the braking system!
Never park the vehicle and never
leave the engine running on a
flammable surface (e.g.
dry grass, dead
leaves).The vehicle exhaust system is very
hot, even several minutes after the engine
stops. Risk of fire!
Never drive on surfaces covered with
vegetation (e.g. tall grass,
accumulated dead leaves, crops, debris)
such as a field, a country lane overgrown
with bushes or a grassy verge.
This vegetation could come into contact with
the vehicle's exhaust system
or other systems
which are very hot. Risk of fire!
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!
Never leave the vehicle unattended,
with the engine running . If you have to
leave your vehicle with the engine running,
apply the parking brake and put the gearbox
into neutral or position N or P (depending on
the type of gearbox).
Never leave children inside the vehicle
unsupervised.
On flooded roads
We strongly advise against driving on flooded
roads, as this could cause serious damage to the
engine or gearbox, as well as to your vehicle's
electrical systems.


If the vehicle absolutely must drive through a
flooded section of road:
►

Check that the depth of the water does not
exceed 15

cm, taking account of waves that
might be generated by other users.
►

Deactivate the Stop & Start function.
►


Drive as slowly as possible without stalling. In
all cases, do not exceed 6 mph (10

km/h).
►

Do not stop and do not switch off the engine.
On leaving the flooded road, as soon as safety
conditions allow

, make several light brake
applications to dry the brake discs and pads.
If in doubt about the state of your vehicle,
contact a CITROËN dealer or a qualified
workshop.

94
Driving
Noise (Electric)
On the outside
Due to the vehicle’s quiet operation when
driving, the driver must pay particular attention.
When manoeuvring, the driver must always
check the vehicle's immediate surroundings.
At speeds of up to 19 mph (30 km/h), the
pedestrian horn warns other road users of the
vehicle’s presence.
Cooling the traction battery
The cooling fan comes on during
charging to cool the on-board charger and the
traction battery.
On the inside
During use, you may hear certain perfectly
normal noises specific to electric vehicles, such
as:
–

T
raction battery relay when starting.
–

V
acuum pump when braking.
–

V
ehicle tyres or aerodynamics when driving.
–

Jolting and knocking noise during hill starts.
Towing
Driving with a trailer places greater
demands on the towing vehicle and
particular care must be taken.
Do not exceed the maximum towable
weights.
At altitude: reduce the maximum load by
10% per 1,000 metres of altitude; the lower
air density at high altitudes decreases engine
performance.
New vehicle: do not tow a trailer until the
vehicle has driven at least 620 miles
(1,000 kilometres).
If the outside temperature is high, let the
engine idle for 1 to 2 minutes after the
vehicle comes to a stop, to help it to cool.
Before setting off
Nose weight
► Distribute the load in the trailer so that the
heaviest items are as close as possible to the
axle and the nose weight (at the point where it
joins your vehicle) approaches the maximum
permitted without exceeding it.
Tyres
► Check the tyre pressures of the towing
vehicle and of the trailer , observing the
recommended pressures.
Lighting
► Check the electrical signalling on the trailer
and the headlamp beam height of your vehicle.
If a genuine CITROËN towing device is
used, the rear parking sensors will be
deactivated automatically to avoid the audible
signal.
When driving
Cooling
Towing a trailer uphill causes the coolant
temperature to increase. The maximum towable
load depends on the gradient and the exterior
temperature. The fan’s cooling capacity does not
increase with engine speed.
►

Reduce speed and lower the engine speed to
limit the amount of heating produced.
►


Pay constant attention to the coolant
temperature.
If this warning lamp and the STOP
warning lamp come on, stop the
vehicle and switch off the engine as soon as
possible.
Brakes
Using the engine brake is recommended to limit
the overheating of the brakes. Braking distances
are increased when towing a trailer.
Side wind
Bear in mind that the vehicle will be more
susceptible to wind when towing.