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EnglishInstrument panels -> Warning and indicator lamps for your Citroen C5 Aircross 2017-2025
Instruments
Persistent warning lamp
Warning and indicator
lamps
Displayed as symbols, visual indicators
which inform the driver of the occurrence
of a malfunction (warning lamps) or of the
operating status of a system (operation or
deactivation indicator lamps). Certain lamps
light up in two ways (fixed or flashing) and/or in
several colours.
1
When the engine is running or the vehicle is
being driven, the illumination of a red or orange
warning lamp indicates a fault that needs
further investigation, using any associated
message and the description of the warning
lamp in the documentation.
Where a warning lamp remains lit
The references (1), (2) and (3) in the warning
and indicator lamp description indicate whether
you should contact a qualified professional
in addition to the immediate recommended
actions.
Associated warnings
The illumination of a lamp can be accompanied
by an audible signal and/or a message
displayed in a screen.
Relating the type of alert to the operating status
of the vehicle allows you to determine whether
the situation is normal or a fault has occurred:
refer to the description of each lamp for further
information.
(1): You must stop as soon as it is safe to do
so and switch off the ignition.
(2): Contact a CITROËN dealer or a qualified
workshop.
(3): Go to a CITROËN dealer or a qualified
workshop.
When the ignition is switched on
Certain red or orange warning lamps come on
for a few seconds when the ignition is switched
on. These warning lamps should go off as soon
as the engine is started.
For more information on equipment or
a function, refer to the corresponding section.
11
Instruments
List of warning and indicator lamps
Warning/indicator lamp
State
Cause
Actions/Observations
Red warning/indicator lamps
STOP
Fixed, associated
Indicates a serious fault with the
engine, braking system, power
steering, automatic gearbox or
a major electrical fault.
Carry out (1) and then (2).
with another warning
lamp, accompanied
by the display of
a message and an
audible signal.
Engine oil
pressure
Fixed.
There is a fault with the engine
lubrication system.
Carry out (1) and then (2).
Maximum
coolant
temperature
Fixed.
The temperature of the cooling
system is too high.
Carry out (1), then wait until the engine has cooled
down before topping up to the required level if
necessary. If the problem persists, carry out (2).
Battery charge
Door(s) open
Fixed.
The battery charging circuit has
a fault (dirty or loose terminals, slack
or cut alternator belt, etc.).
Clean and retighten the terminals. If the warning
lamp does not go off when the engine is started, carry
out (2).
Fixed, associated with If one of the doors or the boot is not
a message identifying fully closed (speed below 6 mph
the door.
[10 km/h]).
Fixed, associated with If one of the doors or the boot is not
a message identifying fully closed (speed above 6 mph
the door, together with [10 km/h]).
an audible signal.
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Instruments
Warning/indicator lamp
State
Cause
Actions/Observations
1
Seat belt not
fastened/
unfastened
Fixed or flashing
accompanied by an
audible signal.
A seat belt has not been fastened or
has been unfastened.
Electric parking
brake
Fixed.
The electric parking brake is applied.
Flashing.
The electric parking brake is not
applied automatically.
The application/release is faulty.
Carry out (1): park on level ground (horizontally).
With a manual gearbox, engage a gear.
With an automatic gearbox, place the gear selector
in mode P.
Switch off the ignition and carry out (2).
Braking
Fixed.
Fixed.
The brake fluid level 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).
The electronic brake force
Carry out (1) and then (2).
distribution (EBFD) system is faulty.
+
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Instruments
Warning/indicator lamp
State
Cause
Actions/Observations
Orange warning/indicator lamps
Anti-lock Braking Fixed.
System (ABS)
The anti-lock braking system has
a fault.
The vehicle retains conventional braking.
Drive carefully at reduced speed, then carry out (3).
Service
Temporarily on,
accompanied by the
display of a message.
One or more minor anomalies,
for which there is/are no specific
warning lamp, have been detected.
Identify the cause of the anomaly using the message
displayed in the instrument panel.
You can deal with certain anomalies yourself, for
example an open door or the start of saturation of the
particle filter.
For other anomalies, such as a fault with the tyre
under-inflation detection system, carry out (3).
Fixed, accompanied
by the display of
a message.
One or more major anomalies,
for which there is/are no specific
warning lamp, have been detected.
Identify the cause of the anomaly using the message
displayed in the instrument panel, then carry out (3).
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.
+
(1): You must stop as soon as it is safe to do
so and switch off the ignition.
(2): Contact a CITROËN dealer or a qualified
workshop.
(3): Go to a CITROËN dealer or a qualified
workshop.
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Instruments
Warning/indicator lamp
AdBlue®
State
Cause
Actions/Observations
1
On for around
The remaining driving range is
between 1,500 and 500 miles
(2,400 and 800 km).
Top up the AdBlue®.
30 seconds when
starting the vehicle,
accompanied by
a message indicating
the remaining driving
range.
Fixed, on switching
on the ignition,
accompanied by an
audible signal and
The remaining driving range is
between 500 and 62 miles (800 and
100 km).
Top up the AdBlue® as soon as possible, or carry
out (3).
a message indicating the
remaining driving range.
Flashing,
The remaining driving range is less
than 62 miles (100 km).
You must top up the AdBlue® to avoid starting
being prevented, or carry out (3).
accompanied by an
audible signal and
a message indicating
the remaining driving
range.
Flashing,
The AdBlue® tank is empty: the
starting prevention system required
by legislation prevents starting of the
engine.
To restart the engine, top up the AdBlue® or carry
accompanied by an
audible signal and
a message indicating
that starting is
prevented.
out (2).
It is essential to add at least 5 litres of AdBlue® to its
tank.
15
Instruments
Warning/indicator lamp
State
Cause
Actions/Observations
SCR emissions
control system
Fixed when the ignition is
switched on, accompanied control system has been detected.
A fault with the SCR emissions
This alert disappears once the exhaust emissions
return to normal levels.
by an audible signal and
a message.
+
+
AdBlue® warning lamp Depending on the message
flashing, on switching
on the ignition,
associated with the
fixed Service and
Engine self-diagnostic
warning lamps,
Carry out (3) as soon as possible to avoid starting
being prevented.
displayed, you can continue driving
for up to 685 miles (1,100 km) before
the engine starting prevention
system is triggered.
accompanied by an
audible signal and
a message indicating
the remaining driving
range.
AdBlue® warning
lamp flashing, on
switching on the
ignition, associated
with the fixed Service
and Engine self-
An engine immobiliser prevents
the engine from restarting (over
the authorised driving limit after
confirmation of a fault with the
emissions control system).
To start the engine, carry out (2).
diagnostic warning
lamps, accompanied
by an audible signal
and a message
indicating that starting
is prevented.
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Instruments
Warning/indicator lamp
State
Cause
Actions/Observations
1
Engine self-
diagnostic
system
Flashing.
The engine management system has There is a risk that the catalytic converter will be destroyed.
a fault.
Carry out (2) without fail.
Fixed.
The emission control system has
a fault.
The warning lamp should go off when the engine is started.
Carry out (3) quickly.
Collision Risk
Alert/Active
Safety Brake
Flashing.
The system is operating.
The vehicle brakes briefly so as to reduce the speed
of frontal collision with the vehicle ahead.
Fixed, accompanied
by a message and an
audible signal.
The system has a fault.
Carry out (3).
Collision Risk
Alert/Active
Safety Brake
Fixed, accompanied
by the display of
a message.
The system has been deactivated, via
the vehicle configuration menu.
Active Lane
Departure
Fixed.
The system has been automatically
deactivated or placed on standby.
Warning System
Flashing.
You are about to cross a broken
lane marking without operating the
direction indicators.
The system is activated, then corrects the trajectory
on the side of the lane marking detected.
Active Lane
Departure
Fixed.
The system has a fault.
Carry out (3).
Warning System
+
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Instruments
Warning/indicator lamp
State
Cause
Actions/Observations
Active Lane
Keeping Assist
Fixed, accompanied
by the Service
The system has a fault.
Carry out (3).
warning lamp.
+
Dynamic
Fixed.
The system is deactivated.
The DSC/ASR system is reactivated automatically
when the vehicle is started, and from around 31 mph
(50 km/h).
Below 31 mph (50 km/h), you can reactivate it
manually.
stability control
(DSC)/Anti-slip
regulation (ASR)
Dynamic
Flashing.
Fixed.
The DSC/ASR adjustment is
activated if there is a loss of grip or
trajectory.
stability control
(DSC)/Anti-slip
regulation (ASR)
The DSC/ASR system has a fault.
Carry out (3).
Emergency
brake fault (with
electric parking
Fixed, accompanied
by the message
"Parking brake fault".
Emergency braking does not have
full power.
If automatic release is not available, use manual
release.
+
brake)
(1): You must stop as soon as it is safe to do
so and switch off the ignition.
(2): Contact a CITROËN dealer or a qualified
workshop.
(3): Go to a CITROËN dealer or a qualified
workshop.
18
Instruments
Warning/indicator lamp
Under-inflation
State
Cause
Actions/Observations
1
Fixed, accompanied
by an audible signal
and a message.
The pressure in one or more wheels
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 are no longer monitored.
then fixed and
Service warning lamp
fixed.
The system is faulty: tyre pressures
Under-inflation detection is no longer monitored.
As soon as possible, check the pressure of the tyres
and carry out (3).
+
Diesel engine
pre-heating
Fixed.
The ignition is on.
Wait until the warning lamp goes off before starting.
If the engine does not start, switch the ignition off and
then on, wait until the lamp goes off again, then start
the engine.
The period of
illumination depends
on the climatic
conditions.
Front passenger Fixed.
airbag (ON)
The front passenger airbag is
activated.
The control is in 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 Fixed.
airbag (OFF)
The front passenger airbag is
deactivated.
The control is in the "OFF" position.
You can install a "rearward facing" child seat, unless
there is a fault with the airbags (Airbags warning lamp
on).
Airbags
Fixed.
One of the airbags or seat belt
pretensioners is faulty.
Carry out (3).
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Instruments
Warning/indicator lamp
Low fuel level
State
Cause
Actions/Observations
Fixed (warning
When it first comes on, there
remains approximately 5 litres of
fuel in the tank (reserve).
Refuel without delay to avoid running out of fuel.
Never drive until completely empty, as this could
damage the emissions control and injection systems.
lamp or LED) and
needle in the red
zone (depending on
version), accompanied
by an audible signal
and a message.
or
The audible signal
and the message
are repeated with
increasing frequency
as the level drops
towards zero.
Diesel filter
Fixed.
The Diesel filter contains water.
Risk of damage to the injection system: carry out (2)
without delay.
Particle filter
(Diesel)
Fixed, accompanied
by an audible signal
and a message about
the risk of particle
filter blockage.
This indicates that the particle filter
is beginning to saturate.
As soon as the 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.
Fixed, accompanied by This indicates that the level in the
Carry out (3).
an audible signal and
a message signalling
that the additive level
in the particle filter is
too low.
additive tank is low.
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Instruments
Warning/indicator lamp
State
Cause
Actions/Observations
1
Deactivation of
the automatic
functions (with
electric parking
brake)
Fixed.
The "automatic application" (on
switching off the engine) and
"automatic release" (on acceleration) The brake can be applied or released manually.
functions are deactivated.
In the event of a fault, illumination of
this warning lamp is accompanied by
a message.
Carry out (3) if automatic application/release is no
longer possible.
Automatic
application
(with electric
Fixed, accompanied
by the message
"Parking brake fault".
Automatic application is not
available, the parking brake can only
be used manually.
Use the electric parking brake control lever.
If automatic release is also not available, use manual
release.
parking brake)
+
Malfunction
(with electric
parking brake)
Fixed.
The electric parking brake has
a fault.
Carry out (3) quickly.
Fixed, accompanied
by the message
"Parking brake fault".
You can no longer immobilise the
vehicle with the engine running.
If manual application and release are not working, the
electric parking brake control lever is faulty.
The automatic functions must be used at all times and
are automatically reactivated in the event of failure of
the control lever.
+
Carry out (2).
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Instruments
Warning/indicator lamp
State
Cause
Actions/Observations
Malfunction
(with electric
parking brake)
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 your vehicle:
F Pull and hold the control lever for approximately
7 to 15 seconds, until the indicator lamp comes on
in the instrument panel.
+
If this procedure does not work, secure your vehicle:
F Park on a level surface.
F With a manual gearbox, engage a gear.
F With an automatic gearbox, select P, then put the
supplied chocks against one of the wheels.
Then carry out (2).
+
Rear foglamps
Fixed.
The lamps are on.
Parking sensors Fixed, accompanied
by the display of
The system has a fault.
Carry out (3).
a message and an
audible signal.
Foot on the
clutch
Fixed.
Stop & Start: the change to START
mode is rejected because the clutch
pedal is not fully depressed.
Fully depress the clutch pedal.
22
Instruments
Warning/indicator lamp
Hill start assist
State
Cause
Actions/Observations
1
Fixed.
The system has a fault.
Carry out (3).
+
+
Power steering
Stop & Start
Fixed.
The power steering has a fault.
Drive carefully at moderate speed, then carry out (3).
Fixed, accompanied
by the display of
a message.
The Stop & Start system is
deactivated.
The engine will not switch off at the next traffic stop.
Press the button to reactivate the Stop & Start.
Green warning/indicator lamps
Stop & Start
Fixed.
When the vehicle stops, the Stop &
Start puts the engine into STOP mode.
Flashing temporarily.
STOP mode is momentarily
unavailable or START mode is
automatically triggered.
(1): You must stop as soon as it is safe to do
so and switch off the ignition.
(2): Contact a CITROËN dealer or a qualified
workshop.
(3): Go to a CITROËN dealer or a qualified
workshop.
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Instruments
Warning/indicator lamp
Park Assist
State
Cause
Actions/Observations
Fixed.
The function is active.
Active Lane
Keeping Assist
Fixed.
The function has been activated.
All the conditions have been met: the system is
operating.
Direction
indicators
Flashing with audible
signal.
The direction indicators are on.
The lamps are on.
Sidelamps
Fixed.
Fixed.
Fixed.
Dipped beam
headlamps
The lamps are on.
Automatic
headlamp
dipping
The function has been activated in
the touch screen (Driving/Vehicle
menu).
+
The lighting control stalk is in the
"AUTO" position.
or
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Instruments
Warning/indicator lamp
Front foglamps
State
Cause
Actions/Observations
1
Fixed.
The front foglamps are on.
Automatic
wiping
Fixed.
Automatic front wiping is activated.
The main beams are on.
Blue warning/indicator lamps
Main beam
headlamps
Fixed.
Black/white warning/indicator lamps
Hill Assist
Descent
Fixed.
The function has been activated,
but is currently paused because the
speed is too high.
Reduce the vehicle speed to below 19 mph (30 km/h).
(grey)
25
