2022 CITROEN C4 check engine light

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:

20
Dashboard instruments
The value indicated is calculated according to the distance covered and
the time elapsed since the last service.
The alert may also be triggered close to a
due date.
Service spannerOn temporarily when the ignition is
switched on.
Between 620 and 1,860 miles (1,000 and 3,000
km) remain before the next service is due.
Fixed, when the ignition is switched on.
The next service is due in less than 620
miles (1,000 km).
Have your vehicle serviced very soon.
Service spanner flashingFlashing then fixed, when the
ignition is switched on.
(With

BlueHDi Diesel engines, associated with
the Service warning lamp.)
The servicing interval has been exceeded.
Have your vehicle serviced as soon as possible.
Resetting the service indicator
The service indicator must be reset after each
service.
If you have serviced your vehicle yourself:
►

Switch the ignition off.




► Press and hold the button located on the end
of the lighting control stalk.
►

Switch on the ignition without starting the
engine; a temporary

display window appears and
a countdown begins.
►

When the display indicates =0, release the
lighting control stalk button; the spanner symbol
disappears.
If you disconnect the battery following
this operation, lock the vehicle and wait
at least 5 minutes for the reset to be
registered.
Reminder of the servicing information
With Touch screen BLUETOOTH audio
system or MyCitroën Play
Servicing information is accessible by
pressing the " Check" button in the
Driving touch screen menu.
With MyCitroën Drive
Servicing information is accessible by
pressing the " Check" button in the
Vehicle touch screen menu.
With MyCitroën Drive Plus
Servicing information is accessible using
the Settings > Vehicle application on the
touch screen.
►

Then select
Safety > Diagnostics.
Engine oil level indicator
(Depending on version)
On versions fitted with an electric gauge, the
engine oil level status is displayed on the
instrument panel for a few seconds when
the ignition is switched on, after the servicing
information.
The level read will only be correct if the vehicle is on level ground and the engine
has been off for more than 30 minutes.
Oil level correct
This is indicated by the display of " OIL OK" or by
the message "Oil level correct" (depending on
the instrument panel).
Low oil level
This is indicated by the display of " OIL" or by
the message "Oil level incorrect" (depending
on the instrument panel), accompanied by the
lighting of the Service warning lamp and an
audible signal.

21
Dashboard instruments
1If a low oil level is confirmed by a check using
the dipstick, the level must be topped up to avoid
damage to the engine.
For more information on Checking levels, refer
to the corresponding section.
Oil gauge malfunction
This is indicated by the display of " OIL_ _"
or by the message "Oil level measurement
invalid " (depending on the instrument panel),
accompanied by the lighting of the Service
warning lamp and an audible signal.
Contact a CITROËN dealer or a qualified
workshop.
In the event of a malfunction of the
electric gauge, the oil level is no longer
monitored.
If the system is faulty, you must check the
engine oil level using the manual dipstick
located in the engine compartment.
For more information on Checking levels,
refer to the corresponding section.
Coolant temperature
indicator
Depending on the type of instrument panel, this
information is only available in the instrument
panel's personalisable area.


With the engine running:
– In zone A, the temperature is correct.
–

In zone
B, the temperature is too high. The
associated warning lamp and the STOP
warning
lamp light up in red on the instrument panel,
accompanied by the display of a message and
an audible signal.
You must stop the vehicle as soon as it is
safe to do so.
Wait a few minutes before switching off the
engine.
After switching off the ignition, carefully open the bonnet and check the coolant
level.
For more information on Checking
levels, refer to the corresponding
section.
AdBlue® range indicators
(BlueHDi)
The Diesel BlueHDi engines are equipped with
a system that associates the SCR (Selective
Catalytic Reduction) emissions control system
and the Diesel particle filter (DPF) for the
treatment of exhaust gases. They cannot
function without AdBlue
® fluid.
When the level of AdBlue® falls below the
reserve level (between 1,500 and 0 miles (2,400
and 0

km)), a warning lamp lights up when
the ignition is switched on and an estimate
of the distance that can be travelled before
engine starting is prevented is displayed in the
instrument panel.
The engine starting prevention system required by regulations is activated
automatically once the AdBlue
® tank is empty.
It is then no longer possible to start the
engine until the minimum level of AdBlue
® has
been topped up.
Manual display of driving range
While the driving range is greater than
1,500 miles (2,400 km), it is not displayed
automatically.

22
Dashboard instruments
With Touch screen BLUETOOTH audio
system or MyCitroën Play
Driving range information is accessible by
pressing the "Check" button in the
Driving touch screen menu.
With MyCitroën Drive
Driving range information is accessible by
pressing the " Check" button in the
Vehicle touch screen menu.
With MyCitroën Drive Plus
Driving range information is accessible
using the Settings > Vehicle application
on the touch screen.
►

Then select
Safety > Diagnostics.
Actions required related to a lack of AdBlue®
The following warning lamps light up when the
quantity of AdBlue® is below the reserve level:
driving range of 1,500 miles (2,400 km).
Together with the warning lamps, messages
regularly remind you of the need to top up to
avoid engine starting being prevented. Refer to
the Warning and indicator lamps section for
details of the messages displayed.
For more information on AdBlue®
(BlueHDi) and in particular on topping
up, refer to the corresponding section.
Warning/ indicator
lamps on Action Remaining
range


Top up. Between 1,500 miles
and 500
miles (2,400
km and 800
km)


Top up as
soon as
possible.Between
500 miles
and 62
miles (800
km and
100
km)


A top-up is
vital, there is
a risk that the
engine will
be prevented
from starting.Between 62
miles and 0
miles (100
km and 0
km)


To be able
to restart the
engine, add at
least 10
litres
of AdBlue
® to
the tank. 0 miles (km)
Taking into account of top-up
Top-up detection may not be
instantaneous after addition. It may take a few
minutes of driving before the top-up detection
is effective.
Malfunction of the SCR emissions
control system
Malfunction detection


If a malfunction is detected,
these warning lamps come
on, accompanied by an
audible signal and the
display of an " Emissions
control
fault" message.
The alert is triggered while driving when the
fault is detected for the first time, and thereafter
when switching on the ignition for subsequent
journeys, for as long as the cause of the fault
persists.
If the fault is temporary, the alert
disappears during the next journey, after
self-diagnostic checks of the SCR emissions
control system.
Malfunction confirmed during the
permitted driving phase (between 685
miles and 0
miles (1,100 km and 0 km))
If the fault indication is still displayed
permanently after 31 miles (50 km) of driving, the
fault in the SCR system is confirmed.
The AdBlue warning lamp flashes and
a message is displayed (" Emissions

24
Dashboard instruments
With MyCitroën Drive Plus

The indicator changes colour depending on how
energy from the traction battery is being used:
–
Blue: energy consumption.
–


Green: energy recovery
.
This indicator does not represent the battery's actual level of charge.
Thermal comfort
consumption indicator
(Electric)
(Depending on version)
It is available in the display pages of the
instrument panel.


The gauge shows the consumption of the
traction battery's electrical energy by the thermal
comfort devices in the passenger compartment.
The devices in question are the heating and air
conditioning systems.
This equipment can be used:
–

If the vehicle is not plugged in, when the
READY

lamp is lit.
–

If the vehicle is plugged in, when the ignition is
switched on ("Lounge" mode).
Selecting ECO

mode limits the performance of
some of this equipment. The thermal comfort
consumption indicator then moves into the
"ECO" zone.
To quickly heat or cool the passenger compartment, feel free to temporarily
select the maximum heating or cooling
setting.
When the heating is on maximum, the gauge
on the thermal comfort consumption indicator
is in the MAX zone. When the air conditioning
is on maximum, it stays in the ECO zone.
Excessive use of thermal comfort equipment,
particularly at low speed, can significantly
decrease the vehicle's range.
Remember to optimise equipment settings
upon achieving the desired level of comfort,
and adjust them if necessary whenever you
start the vehicle.
After an extended period without using the
heating, you may notice a slight odour during
the first few minutes of use.
Manual test
This function allows you to check certain
indicators and display the alerts log.
With Touch screen BLUETOOTH audio
system or MyCitroën Play
It can be accessed via the "Check" button
in the Driving touch screen menu.
With MyCitroën Drive
It can be accessed via the "Check" button
in the Vehicle touch screen menu.
With MyCitroën Drive Plus
It can be accessed via the Settings>
Vehicle touch screen application.
►

Select
Safety > Diagnostics.
The following information is displayed on the
instrument panel:
–

T

yre pressures.
–

Engine oil level (depending on engine).
–


Next service due.
–


Driving range associated with the
AdBlue
® and
the SCR system (BlueHDi

Diesel).
–

Current alerts.
This information is also displayed automatically every time the ignition is
switched on.

52
Ease of use and comfort
Servicing the ventilation and air
conditioning system
►

Ensure that the passenger compartment
filter is in good condition and have the filter
elements replaced regularly

.
We recommend using a composite passenger
compartment filter. Its specific active additive
helps protect against polluting gases and bad
smells.
►

T

o ensure correct operation of the
air conditioning system, have it checked
according to the recommendations in the
Manufacturer’s service schedule.
Stop & Start
The heating and air conditioning systems
only operate when the engine is running.
Temporarily deactivate the Stop & Start
system to maintain a comfortable temperature
in the passenger compartment.
For more information on the Stop &
Start
system, refer to the corresponding
section.
ECO driving mode
Selecting this mode reduces electrical
energy consumption, but restricts the
performance of the heating and air
conditioning systems, although it does not
deactivate them.
Manual air conditioning

1. Adjusting the temperature
Air conditioning on/off
2. Adjusting the air flow
System switch-off
3. Adjusting the air distribution
4. Interior air recirculation
5. Rear screen demisting/de-icing
The air conditioning system only operates with
the engine running.
Adjusting the temperature
► Turn the knob 1 from blue (cold) to red (hot).
Air flow adjustment
► Turn the thumbwheel 2 to obtain a sufficient
air flow to ensure your comfort.
If the air flow control is in
the minimum position (system
deactivated), the temperature in the vehicle
will no longer be controlled. A slight flow of air
can still be felt, due to the forward movement
of the vehicle.
Adjusting the air distribution
Windscreen and side windows
Central and side air vents
Footwells
►

Press one of the buttons
3 to adjust the air
distribution inside the passenger compartment.
The lighting of the button indicates that air
is being blown in the specified direction. It
is possible to activate the following buttons
simultaneously:
–

Central and side air vents + footwells.
–


Windscreen and side windows + footwells.
Air conditioning on/off
The air conditioning system is designed to
operate effectively in all seasons, with the
windows closed.
It is used to:
–
lower the temperature in summer
,
–

increase the effectiveness of demisting in
winter

, above 3°C.
►

Press knob
1 to turn the air conditioning on/
off.
When the system is activated, the indicator lamp
comes on.

61
Ease of use and comfort
3With the Keyless Entry and Start system, the
charger’s operation may be briefly disrupted
when a door is opened or the ignition is switched
off.
Charging
► With the charging area clear, place a device
in its centre.


When the portable device is detected, the
charger’s indicator lamp lights up green. It
remains lit for the whole time that the battery is
being charged.
The system is not designed to charge multiple devices simultaneously.
Do not leave metal objects (e.g. coins,
keys, vehicle remote control) in the
charging area while a device is being charged
- Risk of overheating or interrupting the
charging!
When using applications for a long time
in combination with wireless charging,
some smartphones may switch to thermal
safety and cause some functions to stop.
Checking operation
The state of the indicator lamp allows the
operation of the charger to be monitored.
State of the
indicator lamp Meaning
Off Engine switched off.
No compatible devices
detected.
Charging complete.
Fixed green Compatible portable device detected.
Charging.
Flashing orange Foreign object detected in the charging zone.
Portable device not well
centred in the charging
zone.
Fixed orange Malfunction of the portable device's battery
meter.
Device battery
temperature too high.
Charger malfunction.


If the indicator lamp is fixed orange:
– remove the device, then place it back in the
centre of the charging zone.
or –

remove the device and try again in a quarter
of an hour
.
If the problem persists, have the system checked
by a CITROËN dealer or a qualified workshop.
CITROËN Hi-Fi system
(Depending on version)

The vehicle is equipped with a high-fidelity
acoustic system.
8 speakers offer the pleasure of pure and
detailed sound inside the vehicle:
–

2 tweeters and 2 woofers in the front
–


2 full range speakers in the rear
–


1 speaker in the central area of the dashboard
–


1 subwoofer under the trunk carpet

62
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: