2021 CITROEN C4 AIRCROSS wheel

98
Starting - stopping the engine with the key
- Position 1: LOCK The steering is locked.
-

P
osition 2: ACC
T

he accessories (radio, 12 V socket...) can
be used.
-

P
osition 3: ON
I

gnition on.
-

P
osition 4: S TA R T
S

tarting the engine.
Ignition switch
If you use the accessories for a
prolonged period (with the key in
position 2 (ACC) ), you risk discharging
the battery. Starting your vehicle will
then no longer be possible. Be aware .
See the "Automatic power cut-off to
accessories" section.
Key in ignition
A buzzer sounds on opening the
driver's door, if the key has been left in
the ignition.
F

I

nsert the key in the ignition switch.
F

T

urn the key to position
2 (ACC) and unlock
the steering column, by turning wheel
s li g ht l y.
F

P

ress and hold the brake pedal.
F

F

ully depress the clutch pedal (vehicles
fitted with a manual gearbox).
F

P

ut the gear lever into neutral (vehicles
fitted with a manual gearbox), or in
position


P (vehicles fitted with a CVT
gearbox).
F

O

perate the starter by turning the key to
position 4 (S TA R T ) .
F

O

nce the engine is running, release
the

key.
T

he key returns automatically to
position


3


(ON)
.
Starting using the key Stopping
F Immobilise the vehicle.
F
P ut the gear lever into neutral (vehicles
fitted with a manual gearbox), or in
position


P (vehicles fitted with a CVT
gearbox).
F

W
hile pressing the key, turn it to
position


1 (LOCK).
F

R
emove the key from the ignition switch.
F

L
ock the steering.Do not attach any heavy objects to the
key as this could weigh down on it when
in the ignition switch and cause a fault.
For Diesel vehicles, when the engine
is cold wait with the ignition switch
in position 3 (ON) until the preheater
warning lamp goes off, before turning
the key to position 4 (S TA R T ) .
The warning lamp does not come on
when the engine is hot. Switching off the engine leads to a loss
of braking assistance.
Driving

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

102
Anti-theft protection
Electronic engine immobiliser
The keys contain an electronic chip which has
a secret code. When the ignition is switched
on, this code must be recognised in order for
starting to be possible.
This electronic engine immobiliser locks the
engine management system a few minutes
after the ignition is switched off and prevents
starting of the engine by anyone who does not
have the key.
In the event of a malfunction, you are informed
by a message in the instrument panel screen.
In this case, your vehicle does not start; contact
a CITROËN dealer as soon as possible.
Applying
F Pull the parking brake lever fully up to immobilise your vehicle.
Parking brake
Releasing
F Pull the parking brake lever up gently, press the release button A then lower the
lever fully. When the vehicle is being driven, if the parking
brake is still on or has not been fully released,
a
message appears in the screen.When parking on a slope, direct your
wheels against the kerb, apply the
parking brake, engage a gear or place
the gear lever in position P for vehicles
fitted with a CVT gearbox, and switch
off the ignition ("OFF" mode).
Driving

114
The tyre under-inflation detection
system is an aid to driving which does
not replace the need for vigilance on
the part of the driver.
Under-inflation detection
System which continuously and automatically checks the pressures of the four tyres after switching on the ignition.
A pressure sensor is located in the valve of each tyre (except the spare wheel).
The system triggers an alert if a drop in pressure is detected in one or more tyres, compared to the reference pressure registered in the system.
This reference pressure must be reinitialised every time the tyre pressures are adjusted or a wheel changed.
The system operates on condition that sensor identifiers have first been memorised in the system by a CITROËN dealer or a qualified workshop.
You can memorise two sets of tyres (for example: wheels with "standard" tyres and wheels with "winter" tyres).
Driving with under-inflated tyres
increases fuel consumption.This system does not avoid the need
to check the tyre pressures regularly
(including the spare wheel) and before
a long journey.
Driving with under-inflated tyres
adversely affects road holding,
extends braking distances and causes
premature tyre wear, particularly under
arduous conditions (vehicle loaded,
high speed, long journey).
The tyre pressures for your vehicle can
be found on the tyre pressure label (see
the "Identification markings" section).
The tyre pressures must be checked
when the tyres cold (vehicle stopped
for 1 hour or after driving for less then
6 miles (10 km) at moderate speed).
Other wise, add 0.3 bar to the values
indicated on the label.
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