Citroen C4 Aircross (2017 year). Manual — part 8

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Stop & Start (Auto Stop & Go) system

Operation

Going into engine STOP mode

The "AS&G"

warning lamp comes on in

the instrument panel or the instrument
panel screen and the engine goes into
standby after a few seconds:

-

with a manual gearbox, with the vehicle
stationary and your foot on the brake, when
you put the gear lever into neutral and
release the clutch pedal.

Never refuel with the engine in STOP
mode; you must switch off the ignition
with the key or the START/STOP
button.

When the engine is stopped
automatically, the operation of certain
vehicle systems, such as braking
and power steering for example, are
modified. Take care.

Special cases: STOP mode not
available

STOP mode is not invoked when:
- the driver's seat belt is not fastened,
- the driver's door is open,
-

the bonnet is open,

- the minimum time period of 30 seconds

since starting the engine has not elapsed,

- the vehicle speed has not exceeded 3 mph

(5 km/h) since the last engine start,

- the vehicle has restarted less than

10 seconds ago,

- the engine is needed to maintain a

comfortable temperature in the passenger
compartment,

- demisting is active,
- some special conditions (battery charge,

engine temperature, braking assistance,
exterior temperature, etc.) where the
engine is needed to assure control of a
system,

- the

"AS&G"

warning lamp is

flashing in the instrument panel.

This operation is perfectly normal.

The Stop & Start (Auto Stop & Go) system puts the engine temporarily into standby during stops in the traffic (red lights, traffic jams, etc.). The engine
restarts automatically as soon as you want to move off. The restart takes place instantly, quickly and silently.
Perfect for urban use, the Stop & Start (Auto Stop & Go) system reduces fuel consumption and exhaust emissions as well as the noise level when
stationary.

If you move the gear lever, the "AS&G"
warning lamp flashes, accompanied by
an audible signal.
The alert stops as soon as the gear
lever is returned to the neutral position.

When driving, prolonged pressing of the
clutch pedal may cause a malfunction
of the Stop & Start (Auto Stop & Go)
system.

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Going into engine START mode

The "AS&G"

warning lamp goes off

and the engine starts automatically:

-

with a manual gearbox, when you fully
depress the clutch pedal, with the gearbox
in neutral.

For safety reasons or to ensure smooth
operation, START mode is invoked
automatically when:

Special cases: START invoked
automatically

- the speed of the vehicle exceeds 2 mph

(3 km/h),

- you open the driver's door,

- you unfasten the driver's seatbelt,

- some special conditions (battery charge,

engine temperature, braking assistance,

exterior temperature, etc.) where the

engine is needed to assure control of a

system.

If the system has been deactivated in
STOP mode, the engine will not restart.

At any time, press the "AS&G OFF" switch to
deactivate the system.

Manual Deactivation /
Reactivation

In this case, the "AS&G"

warning lamp

flashes for few seconds, then goes off.

This operation is perfectly normal.

This is confirmed by the "AS&G OFF"
warning lamp coming on in the instrument
panel or instrument panel screen.

If the bonnet is opened while the engine
is in standby, the "AS&G" warning lamp
flashes, accompanied by an audible
signal. The engine will not restart
automatically.
To restart the engine with the bonnet
open, use the ignition key or press the
START/STOP button, while pressing
fully on the brake and clutch pedals.

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The system is reactivated automatically
at every new start using the key or the
START/STOP button.

Opening the bonnet
Before carrying out any work under the
bonnet, deactivate Stop & Start to avoid
any risk of injury caused by automatic
triggering of START mode.

Press the "AS&G OFF"

switch again to

reactivate the function.
The system is active again; this is confirmed by
the "AS&G OFF"

warning lamp going off in the

instrument panel or instrument panel screen.

Operating fault

In the event of a malfunction with the system,
the "AS&G OFF"

warning lamp flashes in the

instrument panel or instrument panel screen,
and the system no longer operates.
Have it checked by a CITROËN dealer or a
qualified workshop.

It is then necessary to switch off the ignition,
then restart the engine using the key or the
START/STOP button.

In the event of a fault in STOP mode, the
vehicle may stall. The following warning lamps
come on in the instrument panel or instrument
panel screen:

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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 the sensor identifiers have first been memorised in the system by a CITROËN dealer or a qualified workshop.
You can memorise two sets of tyres (e.g. 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.
For more information on Identification
markings

, refer to the corresponding

section.
The tyre pressures must be checked
when the tyres are cold (vehicle
stopped for 1 hour or after driving for
less then 6 miles (10 km) at moderate
speed). Otherwise, add 0.3 bar to the
values indicated on the label.

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Under-inflation alert

The alert is given by the fixed
illumination of this warning lamp and
the display of a message.

F

Reduce speed immediately, avoid sudden

steering movements or harsh brake
applications.

F

Stop 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 system for driving with
the spare wheel fitted.

F

If you have a compressor (the one in the

temporary puncture repair kit, for example),
check the four tyre pressures when cold.

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

or
F In the event of a puncture, use the

temporary puncture repair kit or the spare
wheel (depending on 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 are 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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The reinitialisation instruction is entered in
the screen menu, with the ignition in the "ON"
position and the vehicle stationary.

F

Press several times on the INFO button,

located below the instrument panel to the
left of the steering wheel.

F Select

"REINITIALISE" (located in

menu 2/3 or 3/3 depending on the
instrument panel)

.

F

Press 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:
- at least one wheel is not fitted with a

sensor (spare wheel in use),

- a wireless device operating on the same

frequency is close to the vehicle,

- there are accumulations of snow or ice in

the wings or wheels,

- the state of charge of the tyre pressure

monitoring system battery is too low,

- the 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, after a puncture, to have the original
wheel, equipped with a sensor, refitted.

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Managing sets of tyres

If you have had a second set of tyres registered
by a CITROËN dealer or a qualified workshop,
every time you change the set of tyres (fitting
a set of winter tyres, for example), you must
select the set you have just fitted in the
configuration menu.

After fitting the new set of tyres, you
should check and adjust the tyre
pressures to the values specified on the
tyre pressure label.
For more information on Identification
markings

and in particular the

tyre pressure label, refer to the
corresponding section.

Selection of the other set of tyres is done via
the menu screen, with the ignition on and the
vehicle stationary.
F

Press several times on the INFO button to

select the menu for managing sets of tyres
(located in menu 3/3)

.

F

Press and hold the INFO button for at least

3 seconds

to change successively from

set of tyres 1 to set of tyres 2 or the other
way round.

The system automatically reinitialises
the reference pressure based on the
pressure in the new set (the under-
inflation detection warning lamp flashes
during the operation).

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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.

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As the engine torque is applied to all
four wheels, the condition of the tyres
has a considerable impact on the
performance 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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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 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. "ACC RES"

button: increase the cruising

speed and recall the stored speed.

4. "CANCEL"

button: stop cruise control.

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

Set 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.

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Increasing the programmed
speed

Decreasing the
programmed speed

Temporary acceleration/
deceleration

Temporary acceleration

Press the accelerator pedal as normal. When
the pedal is released, you return to the stored
speed.

F

Using button 2 "COAST SET":

- successive presses decrease the speed in

steps of approximately 1 mph (1.6 km/h).

- a maintained press of this button

decreases the speed progressively.

Once the speed required has been reached,
release the button, the new speed is stored.
F

Using the brake pedal:

- brake to deactivate the cruise control, then

press button 2 "COAST SET"

. Release to

store the new speed.

F

Using button 3 "ACC RES":

- successive presses increase the speed in

steps of approximately 1 mph (1.6 km/h).

- a maintained press of this button increases

the programmed speed progressively.

Once the speed required has been reached,
release the button, the new speed is stored.
F

Using the accelerator pedal:

- accelerate to reach the speed required,

then press button 2 "COAST SET"

.

Release the button to store the new speed.

Temporary deceleration

Press the brake pedal to reduce the
speed. To return to the stored speed, press
button 3 "ACC RES"

.

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When the cruise control is in operation,
pay attention if you press and hold one
of the programmed speed adjustment
buttons: this can result in a very rapid
change in the speed of your vehicle.
Do not use the cruise control on
slippery roads or in heavy traffic.
On a steep descent, the cruise control
will not be able to prevent the vehicle
from exceeding the programmed speed.
To prevent the mat from becoming
caught under the pedals:
- ensure that the mat is positioned

correctly,

- never fit one mat on top of another.

To deactivate the cruise control:
F press the brake or clutch

pedal, or

F press button 1 "ON OFF", or
F press button 4 "CANCEL"

.

Deactivating the function

Reactivating the function

When the cruise control has been deactivated
using the button 4 "CANCEL", you can
return to the stored speed by pressing
button 3 "ACC RES" when you reach a
minimum speed of 25 mph (40 km/h).

The cruise control may be deactivated
automatically:
F

when the vehicle reaches a speed below

22 mph (35 km/h),

F

when the active stability control system

(ASC) comes into operation.

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Parking sensors

This function cannot, in any
circumstances, take the place of the
vigilance of the driver.

Rear parking sensors

This system indicates the proximity of an
obstacle (person, vehicle, tree, gate, etc.)
which comes within the field of detection of
sensors located in the bumper.
Certain types of obstacle (stake, roadworks
cone, etc.) detected initially will no longer be
detected at the end of the manoeuvre due to
the presence of blind spots.

Audible assistance

The proximity information is given by an
intermittent audible signal, whose frequency
increases as the vehicle approaches the
obstacle.
Below a certain distance between the vehicle
and the obstacle, the audible signal becomes
continuous.

The system is switched on by engaging reverse
gear. This is accompanied by an audible signal.
The indicator lamp in the button comes on to
confirm that the system is active.
The system is deactivated when you come out
of reverse gear.

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Vehicle only

Vehicle fitted with a towbar

Modification of the detection

zones

F

Press this button to deactivate the system.

F

Press this button again for a few seconds

and release it.

The detection zone modification information is
indicated by an audible signal:
-

double

signal on vehicles fitted with a

towbar,

-

single

signal on vehicles which are not

fitted with a towbar.

Detection zones

The detection zones differ depending on whether the vehicle is fitted with a towbar.
If you select towbar mode, the towbar zone A is excluded from the detection zones.

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Visual assistance

Front parking sensors

Deactivation / Activation of the
front and rear parking sensors

The function is deactivated by pressing this
button. The indicator lamp in the button
goes off.
Pressing this button again reactivates the
function. The indicator lamp in the button
comes on.

Operating fault

The front parking sensors are triggered when
an obstacle is detected in front, a gear is
engaged (position D for vehicles with a CVT
gearbox) and the speed of the vehicle remains
below 6 mph (10 km/h).
The front parking sensors are interrupted if
the vehicle stops for more than five seconds
in forward gear, if no further obstacles are
detected or when the speed of the vehicle
exceeds 6 mph (10 km/h).

Remember to deactivate the system if
towing a trailer or caravan.

In bad weather or in winter, ensure that
the sensors are not covered with mud,
ice or snow.
When the vehicle is moving at a speed
below 6 mph (10 km/h), certain sound
sources (motorcycle, lorry, pneumatic
drill, etc.) may trigger the audible
signals of the parking sensor system.

In the event of an problem, when reverse gear
is engaged this lamp in the button flashes,
accompanied by an audible signal.

This supplements the audible
signal by displaying bars in the
screen, in front of or behind the
vehicle.

If one of the sensors is faulty, it
flashes in the instrument panel
screen.

Contact a CITROËN dealer or a qualified
workshop.

These bars flash at the start of the manoeuvre
then become fixed from a certain distance
between the vehicle and the obstacle.

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Reversing camera

Linked with the navigation option, the reversing
camera complements the parking sensor
system and is activated automatically when
reverse gear is engaged.

The image from the camera is displayed in the
navigation screen.
The zone (A) represents the upper part of the
rear bumper.
The red line represents the distance of 50 cm
from the edge of the rear bumper.
The green lines represent the width of the
vehicle increased by 20 cm on each side.
The marks on the green lines correspond to the
edges of the rear bumper (B), then the distance
of 1 metre from the edge of the rear bumper (C)
and 2 metres (D).

In no circumstances can the reversing
camera replace the need for vigilance
on the part of the driver.

Clean the reversing camera from time
to time using a soft dry cloth.

High pressure jet wash
When washing your vehicle, do not
direct the lance to within 30 cm of the
camera lens.