2021 CITROEN C4 AIRCROSS display

100
For diesel vehicles, when
the engine is cold starting
does not take place until the
pre-heater warning lamp has
gone off.
If one of the starting conditions is not
met, a reminder message appears in
the instrument panel screen. In some
circumstances, it is necessary to
turn the steering wheel slightly while
pressing the "
START/STOP " button
to assist unlocking of the steering;
a message warns you when this is
needed.
The presence of the electronic key
in the defined zone is essential. For
reasons of safety, do not leave this area
when the engine is running.
Switching off using the
electronic key
If the vehicle is not immobilised, the
engine will not stop.
This message is displayed
when the driver's door is
opened and the vehicle is not
in "OFF" mode.
F

P

ress the " START/STOP " button again to
change to "OFF" mode.
F

I

mmobilise the vehicle.
F

P

lace the gear lever in neutral for vehicles
fitted with a manual gearbox, or on P for
vehicles fitted with a CVT gearbox.
F

W

ith the electronic key inside the vehicle,
press the " START/STOP " button.
The engine stops.
The steering locks when a door is opened or on
locking the vehicle.
Each attempt at starting takes around
15 seconds. If the engine does not start, press
the "
START/STOP " button once more to try
again.
The presence of the electronic key in
the vehicle is essential for switching
on the ignition and starting only. Once
the engine has started,
make sure
that the electronic key remains with
the vehicle until the end of the journey:
other wise you would not be able to lock
the vehicle.
Switching off the engine leads to a loss
of braking assistance.
driving

101
Once the engine has started, you can
remove the electronic key from its
housing A and close the glove box.
Back-up starting with the
electronic key
The message is displayed
when you open the driver's
door and the electronic key
has not been removed from
its location A . Remember to take the electronic
key with you when you leave the vehicle.
F

P

ress the brake pedal on vehicles fitted
with a CVT gearbox or depress the clutch
pedal fully on vehicles with a manual
gearbox.
F

P

ress the "
START/STOP " button.
When the electronic key is in the defined zone
and your vehicle does not start after pressing
the " START/STOP " button:
F

O

pen the glove box.
F

I

nsert the electronic key in the location A .
Emergency stop with the
electronic key
During an emergency stop, the braking
servo assistance and steering power
assistance functions are no longer
provided. Take great care.
In the event of an emergency only
, the
engine can be stopped without any conditions.
To do this, press and hold the " S TA R T/
STOP " button for about 3 seconds or make
3

successive presses on the button.
The engine stops and the vehicle goes into
"ACC" mode.
4
Driving

108
Manual gear changing
In the automated mode, you can take over
control temporarily at any time using the
steering mounted controls.
The use of these controls permits manual
selection of the gears in situations which
require a faster change down than that offered
in automated mode (arrival at a roundabout,
exit from a car park with a steep gradient,
over taking...).
The gearbox engages the gear requested if
the engine speed permits it. The gear engaged
appears.
To return to the automated mode, do one of the
following:
-
p
ress the back of the "+/OFF" steering
mounted control 3 for approximately
2
seconds,
-

m
ove the gear lever quickly towards
position +/- and then return it to position D ,
-

s
top the vehicle.
Stopping the vehicle Operating fault
With the ignition on, if the message "Slow
down" or "Service required" appears in
the instrument panel screen, this indicates a
gearbox malfunction.
When a message is displayed, carry out the
following operations:
-

s
low down and stop your vehicle in a safe
place,
-

p
lace the lever in position P and let the
engine run,
-

o
pen the bonnet to allow the engine to
cool.
If the message disappears for a long period,
you can set off again.
If the message remains displayed or appears
frequently, contact a CITROËN dealer or a
qualified workshop without delay.
Before switching off the engine, you must place
the gear lever in position P
.
You must apply the parking brake to immobilise
the vehicle.
Driving

115
Under-inflation alert
The alert is given by the fixed
illumination of this warning lamp and
the display of a message.
F

R

educe speed, avoid sudden steering
movements or harsh brake applications.
F

S

top as soon as it is safe to do so. The loss of pressure detected does not
always lead to visible deformation of the
tyre. Do not rely on just a visual check. The alert is maintained until the
reference pressure is reinitialised after
the inflation, repair or replacement of
the tyres concerned. In the event of
the repair or replacement of tyres, the
sensor identifiers must be registered in
the system by a CITROËN dealer or a
qualified workshop.
The spare wheel does not have
a sensor, so there is no need to
reinitialise the the system for running
with the spare wheel fitted.
F
I f you have a compressor (the one in the
temporary puncture repair kit for example),
check the four tyre pressures when cold.
I

f it is not possible to check the tyre
pressures at the time, drive carefully at
reduced speed.


or
F

I
n the event of a puncture, use the
temporary puncture repair kit or the spare
wheel (according to equipment).
Reinitialising the reference
pressure
Before reinitialising the system, ensure
that the pressures in the four tyres are
suitable for the conditions of use of the
vehicle and as specified on the tyre
pressure label.
The under-inflation detection system
cannot warn of an incorrect pressure at
the time of reinitialisation.
The system must be reinitialised after any
adjustment of tyre pressures and after
changing one or more wheels.
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Driving

116
The reinitialisation instruction is entered in
the screen menu, with the ignition on and the
vehicle stationary.
F Press repeatedly on the INFO button
to select "REINITIALISE" (located in
menu
2/3 or 3/3 depending on the
instrument panel) .
F

P
ress and hold the INFO button for at least
3 seconds to reinitialise the under-inflation
detection system.
Reinitialisation of the system is confirmed
by the flashing of the warning lamp in the
instrument panel. The under-inflation alert is only reliable
if the system has been reinitialised
with the four tyre pressures correctly
adjusted.
Operating fault
The flashing and then fixed illumination of the
under-inflation warning lamp accompanied by
the display of a message indicates a fault with
the system.
In this case, monitoring of the tyre pressures is
not assured.
This alert is also displayed if:
-

o
ne or more wheels is not fitted with a
sensor (spare wheel in use),
-

a w
ireless device operating on the same
frequency is close to the vehicle,
-

t
here are accumulations of snow or ice in
the wings or wheels,
-

t
he state of charge of the tyre pressure
monitoring system battery is too low,
-

t
he wheel sensor identifiers have not been
memorised in the system by a CITROËN
dealer or a qualified workshop. Any tyre repair or replacement on a
wheel fitted with this system must be
carried out by a CITROËN dealer or a
qualified workshop.
If you fit the second set of tyres
memorised in the system, a fault will
be signalled until the second set is
selected in the configuration menu. Go to a CITROËN dealer or a qualified
workshop
to have the system checked
or, following the repair of a puncture, to
have the original wheel, equipped with a
sensor, refitted.
Driving

118
Four wheel drive system
System which permits the selection of a transmission mode in relation to the driving conditions.
Three transmission modes are available and can be selected manually by the driver in accordance with his requirements.
You can change transmission mode when
stationary or while driving.
The transmission mode can be selected by
turning the control A.
Selecting the transmission
mode
4WD AUTO (position 1)
The vehicle operates with four wheel drive and
provides optimum traction for all levels of grip.
This is the vehicle's normal and regular
operating mode, the distribution of the torque
between the front and rear axles is controlled
automatically.
The distribution favours the front wheels,
the transfer of torque to the rear wheels is
managed electronically by the control unit
in relation to the level of grip, so providing
optimum road holding.
4WD LOCK (position 2)
The vehicle operates with four wheel drive in
this mode also.
It is recommended when grip is particularly
poor or difficult (sand, mud, slopes, ...).
2WD (position 3)
The vehicle operates with front two wheel drive.
This is suitable for use on a tarmac roads or
where the driver considers that there is no risk
of loss of grip (dry road).
Display in the instrument panel
The transmission mode is displayed in the
form of an intermittent display in the instrument
panel screen when the transmission mode is
selected.The selection of this mode is
recommended when the level of grip
permits.
Driving

119
As the engine torque is applied to all
four wheels, the condition of the tyres
has a considerable impact on the
per formance of the vehicle.
Ensure that all four tyres are in good
condition.
Avoid driving the vehicle in sandy or
muddy areas or in other areas in which
the wheels could spin.
Spinning the wheels places the
transmission components under
pressure and could cause a serious
malfunction.
Do not drive the vehicle through deep
water.
Avoid driving over excessively uneven
terrain (risk of scraping under the body
or of grounding on crossing a bridge).
Operating faults
If the selected transmission mode display
flashes, the vehicle switches automatically to
front "2WD" transmission mode.
It is then no longer possible to select the
transmission mode using the control A .
If the message "SLOW DOWN" is displayed on
the instrument panel, let the transmission cool
down then wait for the display to clear before
setting off again.
If "4WD" and "LOCK" are displayed alternately
and if "SERVICE REQUIRED" is displayed in
the instrument panel, the system has failed and
the safety system has been activated.
Contact a CITROËN dealer or a qualified
workshop without delay. Have your vehicle towed on a
flatbed.
The vehicle must not be towed with the
front or rear wheels on the ground even
if it is in front "2WD" (2 wheel drive)
mode.If the replacement of a tyre is
necessary on 4-wheel drive versions,
it is recommended that all four tyres be
replaced at the same time, ensuring
that the same make, model and size is
used on all wheels.
This is because using tyres of different
sizes, structure or rate of wear could
damage transmission components.
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Driving

120
Cruise control
System which automatically maintains the vehicle speed at the value programmed by the driver, without any action on the accelerator pedal.
The cruise control is switched on manually:
the vehicle speed must be at least 25 mph
(40 km/h) and second gear or higher must be
engaged in the case of a manual gearbox.
The cruise control is switched off manually, by
an action on the brake or clutch pedal or if the
ASC system is triggered.
The programmed speed can be exceeded
temporarily by pressing the accelerator pedal.
The cruise control cannot, in any
circumstances, take the place of the
need to comply with speed limits or of the
vigilance and responsibility of the driver. The controls of this system are grouped
together on the steering wheel.
1.
"

ON/OFF" button: activation / deactivation
of the cruise control mode.
2.
"

COAST SET" button: store a driving
speed and decrease the cruising speed.
3.
"A

CC R ES" button: increase the cruising
speed and recall the stored speed.
4.
"C

ANCEL" button: stop control of the
vehicle's speed.
Steering mounted controls
When you press button 1 , the "CRUISE"
indicator comes on in the instrument panel.
Display in the instrument panel
Programming
F Press button 1 .
F S et the programmed speed by
accelerating
to the required speed, then
press button 2 "COAST SET" .
To return to the programmed speed, simply
release the accelerator pedal.
Switching off the ignition cancels any
programmed speed value.
driving