2021 CITROEN C4 CACTUS warning

11
Warning/indicator lampState Cause Action/Observations
Service Temporarily on, accompanied
by the display of a message. One or more minor faults have
been detected, for which there is no
specific warning lamp. Identify the cause of the fault 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 any other problems, 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 faults have
been detected, for which there is no
specific warning lamp. Identify the cause of the anomaly using the
message displayed in the instrument panel,
then carry out (3).
+ Ser vice warning lamp fixed
and service spanner flashing
then fixed. The ser vice is overdue.
Only with BlueHDi Diesel versions.
Your vehicle must be ser viced as soon as
possible.
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Instruments

12
Warning/indicator lampState Cause Action/Observations
+ AdBlue
®
(1.6 BlueHDi
E u r o 6 .1) 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 1,500 and 375 miles (2,400
and 600 km).
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
between 375 and 0 miles (600 and
0 k m).
Yo u must
top up the AdBlue
® to avoid a
breakdown , 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 ) : 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.
Instruments

13
Warning/indicator lampState Cause Action/Observations
AdBlue
®
(1.5 BlueHDi
Euro 6.2) Switched on for around thirty
seconds when switching on
the ignition, accompanied
by an audible signal and
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
®.
You can add up to 10 litres of AdBlue® to its
tank.
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 60 miles (800 and
100 km).
Top up the AdBlue
® quickly
, or carry out (3).
You can add up to 10 litres of AdBlue® to its
tank.
Flashing, accompanied by an
audible signal and a message
indicating the remaining
driving range. The driving range is less than 60
miles (100 km).
Yo u must
top up the AdBlue
® to avoid a
breakdown , or carry out (3).
You can add up to 10 litres of AdBlue
® to its
tank.
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 ) : 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

14
Warning/indicator lampState Cause Action/Observations
+
+ SCR emissions
control system
(BlueHDi Diesel)
Fixed, on switching on the
ignition, associated with the
Ser vice and engine diagnostic
warning lamps, 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.
Flashing, on switching on the
ignition, associated with the
Ser vice and engine 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 a
breakdown
.
Flashing, on switching on the
ignition, associated with the
Ser vice and engine diagnostic
warning lamps, accompanied
by an audible signal and a
message. 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).
Engine
diagnostic
system Flashing.
The engine management system has
a fault. There is a risk that the catalytic converter will be
destroyed.
Carry out (2) without fail
.
Fixed. The emissions control system has
a fault. The warning lamp should go off when the
engine is started.
Carry out (3) quickly.
Instruments

15
Warning/indicator lampState Cause Action/Observations
Collision Risk
Alert/Active
Safety Brake Flashing.
The system is operating. The vehicle brakes briefly so as to reduce the
speed of 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 a
message.
The system has been deactivated via
the vehicle configuration menu.
Dynamic
stability control
(DSC/ASR) Flashing.
The DSC/ASR adjustment is
activated if there is a loss of grip or
trajectory.
Fixed. The DSC/ASR system has a fault. Carry out (3).
Dynamic
stability control
(DSC/ASR) Fixed.
The DSC/ASR is deactivated. Press the button to activate the DSC/ASR.
The DSC/ASR system is activated
automatically when the vehicle is started.
If the system is deactivated, it is reactivated
automatically once a speed of around 31
mph
(50 km/h) is reached.
(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

16
Under-inflationFixed, accompanied by an
audible signal and a message. 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
Flashing then fixed,
accompanied by the Ser vice
warning lamp. The system is faulty: tyre pressures
are no longer monitored.
As soon as possible, check the pressure of
the tyres and carry out (3).
Diesel engine
pre-heating Fixed.
The period of illumination
depends on the climatic
conditions. The ignition is on.
Wait until the 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 "rear ward
facing" child seat on the front passenger
seat – Risk of serious injur y!
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 on).
Airbags Fixed. One of the airbags or seat belt
pyrotechnic pretensioners is faulty. Carry out (3).
Warning/indicator lamp
State Cause Action/Observations
Instruments

17
Warning/indicator lampState Cause Action/Observations
Low fuel level Fixed, accompanied by an
audible signal and a message.
Until sufficient fuel has
been added, this warning
lamp reappears every time
the ignition is switched on,
accompanied by an audible
warning and a message.
The audible warning and the
message are repeated with
increasing frequency as the
fuel 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
, this
could damage the emissions and injection
systems.
Lane depar ture
warning system Flashing, accompanied by an
audible signal. A lane is being crossed, right side (or
left side). Turn the steering wheel in the opposite
direction to return to the correct trajectory.
+ Lane depar ture
warning system
Fixed, accompanied by the
Service warning lamp. The lane departure warning system
is faulty. Carry out (3).
Rear foglamp Fixed. The rear foglamp is lit.
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Instruments

18
Warning/indicator lampState Cause Action/Observations
Green warning/indicator lamps
Stop & Star tFixed. 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.
Left-hand
direction
indication Flashing with audible signal. The lamps are lit
Right-hand
direction
indicator Flashing with audible signal. The lamps are lit.
Sidelamps Fixed. The lamps are lit.
Dipped beam
headlamps Fixed.
The lamps are lit.
Front foglamps Fixed. The front foglamps are lit.
Blue warning lamps
Main beam
headlampsFixed.
The main beams are lit.
Instruments