2021 CITROEN C4 AIRCROSS Handbook (in English)

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.
4
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

121
Increasing the programmed
speedDecreasing the
programmed speedTemporary acceleration/
deceleration
Temporary acceleration
Press the accelerator pedal as normal. When
the pedal is released, you return to the stored
speed.
F

U

sing button 2 "COAST SET"
:
-
s
uccessive presses decrease the speed in
steps of approximately 1 mph (1.6 km/h).
-

a m

aintained press of this button
decreases the speed progressively.
Once the speed required has been reached,
release the button, the new speed is stored.
F

U

sing the brake pedal:
-

b

rake to deactivate the cruise control, then
press button 2 "COAST SET" . Release to
store the new speed.
F

U

sing button 3 "ACC RES"
:
-
s
uccessive presses increase the speed in
steps of approximately 1 mph (1.6 km/h).
-

a m

aintained 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

U

sing the accelerator pedal:
-

a

ccelerate 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" .
4
Driving

122
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 n
ot 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:
-

e
nsure that the mat is positioned
c o r r e c t l y,
-

n
ever fit one mat on top of another.
To deactivate the cruise control:
F
p
ress the brake or clutch pedal, or
F

p

ress button 1 "ON OFF" , or
F

p

ress 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

w

hen the vehicle reaches a speed below
20 mph (35 km/h),
F

w

hen the active stability control system
(ASC) comes into operation.
driving

123
Parking sensors
This function cannot, in any
circumstances, take the place of the
vigilance and responsibility 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, the frequency of
which increases as the vehicle approaches the
obstacle.
When the distance between the vehicle and
the obstacle becomes less than approximately
thirty centimetres, 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.
4
driving

124
Vehicle onlyVehicle fitted with a towbar
Modification of the detection
zones
F Press this button to deactivate the system.
F
P ress this button again for a few seconds
and release it.
The detection zone modification information is
indicated by an audible signal:
-

d
ouble signal on vehicles fitted with a
towbar,
-

si
ngle 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.
Driving

125
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 for ward 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.
4
Driving

126
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.
driving