2023 CITROEN C5 AIRCROSS red warning lamp

11
Warning and indicator
lamps
Associated warnings
The illumination of a lamp can be accompanied
b y 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.
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.
Persistent warning lamp
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.
(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.
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
Instruments

12
List of warning and indicator lamps
Warning/indicator lampStateCause Actions/Observations
Red warning/indicator lamps
STOPFixed, associated
with another warning
lamp, accompanied
by the display of
a
message and an
audible signal. Indicates a
serious fault with the
engine, braking system, power
steering, automatic gearbox or
a
major electrical fault.Carry out (1) and then (2).
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 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).
Door(s) open Fixed, associated with
a


message identifying
the door. If one of the doors or the boot is not
fully closed (speed below 6


mph
[10


km/h]).
Fixed, associated with
a message identifying
the door, together with
an audible signal.If one of the doors or the boot is not
fully closed (speed above 6 mph
[10


km/h]).
Instruments

14
Anti-lock Braking
System (ABS)Fixed.The anti-lock braking system has
a
fault. The vehicle retains conventional braking.
Drive carefully at reduced speed, then carry out (3).
Warning/indicator lamp
StateCause Actions/Observations
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 ser vice
spanner flashing then
fixed.
The servicing interval has been
exceeded.
The vehicle must be ser viced 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.
Orange warning/indicator lamps
Instruments

15
Warning/indicator lampStateCause Actions/Observations
AdBlue
®On for around
30 seconds when
starting the vehicle,
accompanied by
a
message indicating
the remaining driving
range. The remaining driving range is
between 1,500
and 500 miles
(2,400
and 800 km).Top up the AdBlue®.
Fixed, on switching
on the ignition,
accompanied by an
audible signal and
a
message indicating the
remaining driving range.The remaining driving range is
between 500 and 62 miles (800 and
10 0


k m). Top up the AdBlue® as soon as possible
, or carry
out (3).
Flashing,
accompanied by an
audible signal and
a

message indicating
the remaining driving
range. The remaining driving range is less
than 62

miles (100

km). Yo u must
top up the AdBlue
® to avoid star ting
being prevented , or carry out (3).
Flashing,
accompanied by an
audible signal and
a

message indicating
that starting is
prevented. 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
out (2).
It is essential to add at least 5

litres of AdBlue
® to its
tank.
1
Instruments

16
Warning/indicator lampStateCause Actions/Observations
+
+ SCR emissions
control system
Fixed when the ignition is
switched on, accompanied
by an audible signal and
a


message.A fault with the SCR emissions
control system has been detected. This alert disappears once the exhaust emissions
return to normal levels.
AdBlue® warning lamp
flashing, on switching
on the ignition,
associated with the
fixed Ser vice and
Engine self-diagnostic
warning lamps,
accompanied by an
audible signal and
a

message indicating
the remaining driving
range.Depending on the message
displayed, you can continue driving
for up to 685
miles (1,100 km) before
the engine starting prevention
system is triggered. Carry out (3) as soon as possible to avoid star ting
being prevented
.
AdBlue
® warning
lamp flashing, on
switching on the
ignition, associated
with the fixed Ser vice
and Engine self-
diagnostic warning
lamps, accompanied
by an audible signal
and a

message
indicating that starting
is prevented. 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).
Instruments

17
Engine self-
diagnostic
systemFlashing.
The engine management system has
a
fault.There is a risk that the catalytic converter will be destroyed.
C arry 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.
Warning/indicator lamp StateCause Actions/Observations
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
Warning System Fixed.
The system has been automatically
deactivated or placed on standby.
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
Warning System
Fixed.
The system has a
fault.Carry out (3).
1
Instruments

19
Under-inflationFixed, 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
then fixed and
Service warning lamp
fixed.The system is faulty: tyre pressures
are no longer monitored.
Under-inflation detection is no longer monitored.
As soon as possible, check the pressure of the tyres
and carry out (3).
Warning/indicator lamp
StateCause Actions/Observations
Diesel engine
pre-heating Fixed.
The period of
illumination depends
on the climatic
conditions. 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.
Front passenger
airbag (ON) Fixed.
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
airbag (OFF) Fixed.
The front passenger airbag is
deactivated.
The control is in the "OFF" position. You can install a "rear ward facing" child seat, unless
there is a
fault with the airbags (Airbags warning lamp
o n).
Airbags Fixed. One of the airbags or seat belt
pretensioners is faulty. Carry out (3).
1
Instruments

20
Warning/indicator lampStateCause Actions/Observations
or Low fuel level
Fixed (warning
lamp or LED) and
needle in the red
zone (depending on
version), accompanied
by an audible signal
and a
message.
The audible signal
and the message
are repeated with
increasing frequency
as the level drops
towards zero.When it first comes on, there
remains approximately 5 litres of
fuel in the tank (reser ve). Refuel without delay to avoid running out of fuel.
Never drive until completely empty
, as this could
damage the emissions control and injection systems.
Diesel filter Fixed. The Diesel filter contains water. Risk of damage to the injection system: carry out (2)
without delay.
Par ticle 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
an audible signal and
a

message signalling
that the additive level
in the particle filter is
too low.This indicates that the level in the
additive tank is low. Carry out (3).
Instruments