2021 CITROEN C4 AIRCROSS tyre pressure

4
Exterior
Lighting controls 127-131
Headlamp beam adjustment 1 33
Welcome lighting

1
32
Changing bulbs
1

82-185
-

f
ront lamps
-
fo

glamps
-

d
irection indicator repeaters
Wiper controls

1
34-137
Changing a wiper blade
1
97
Door mirrors
7
7-78
Doors
6
2, 64
-

o
pening / closing
-

c
entral locking
Child lock

1
70
Electric windows

6
8 - 69
Alarm
6

5-67
Panoramic sunroof

7

0
Roof bars

2

03
Accessories
20

4-205
Braking assistance

1

42-143
Trajectory control

1

44-145
Tyre pressures

1

75, 235
Under-inflation detection
1

14-117
Boot
6

3
-
o
pening / closing
- em
ergency release
Temporary puncture
repair kit

1

71-174
Changing a wheel

1

75 -180
-

t

ools
-

r

emoving / refitting
Snow chains

1

81
Changing bulbs
1

86-187
-

r

ear lamps
-

3

rd brake lamp
-

n

umber plate lamps
-
fo

glamp
Parking sensors

1

23 -125
Reversing camera

1

26
Towbar
20

1-202
To w i n g
1

9 8 - 2 0 0
Fuel tank

2

10
Remote control key /
electronic

key

5

2- 61
-

o

pening / closing
-

a

nti-theft protection
-
b

attery
over view

11
Limit the causes of excess consumption
Spread loads throughout the vehicle; place the heaviest items in the
bottom of the boot, as close as possible to the rear seats.
Limit the loads carried in the vehicle and reduce wind resistance (roof
bars, roof rack, bicycle carrier, trailer...). Use a roof box in preference.
Remove roof bars and roof racks after use.
At the end of winter, remove snow tyres and refit your summer tyres.
Observe the recommendations on
maintenance
Check the tyre pressures regularly, when cold, referring to the label in
the door aperture, driver's side.
Carry out this check in particular:
-
b
efore a long journey,
-

a
t each change of season,
-

a
fter a long period out of use.
Don't forget the spare wheel and the tyres on any trailer or caravan.
Have your vehicle serviced regularly (engine oil, oil filter, air filter...) and
observe the schedule of operations recommended by the manufacturer.
When refuelling, do not continue after the third cut-off of the nozzle to
avoid any over flow.
At the wheel of your new vehicle, it is only after the first 1 800 miles
(3
000 kilometres) that you will see the fuel consumption settle down to
a consistent average.
.
Eco-driving

15
Warning/indicator lampis on Cause Action / Observations
Anti-lock
Braking System
(ABS) fixed.
The anti-lock braking system has a
fault. The vehicle retains conventional braking.
Drive carefully at reduced speed and contact a CITROËN
dealer or a qualified workshop without delay.
Front seat belt
not fastened /
unfastened
fixed, then flashing,
accompanied by an
audible signal.The driver has not fastened or has
unfastened their seat belt.
Pull the strap, then insert the tongue in the buckle.
Airbags and
pretensioners temporarily.
When you switch on the ignition, this
warning lamp comes on for a few
seconds, then goes off. If it does not go off, contact a CITROËN dealer or a qualified
workshop.
fixed. Fault with one of the airbag or seat
belt pretensioner systems. Have it checked by a CITROËN dealer or a qualified
workshop.
Under-inflation fixed,
accompanied by
a message.The tyre pressure for one or more
wheels is too low.
Check the tyre pressures as soon as possible.
This check should preferably be done with the tyres cold.
You must reinitialise the system after every adjustment of
one or more tyre pressures and after replacing one or more
wheels.
For more information refer to the "Under-inflation detection"
section.
flashing
then fixed,
accompanied by
a message. The system has a fault and/or one
or more wheels does not have a
detected sensor.
The tyre pressures are no longer monitored.
Have the system checked by a C
ITR
oËn d

ealer or a
qualified workshop.
1
Monitoring

24
Screen 1 Screen 2Cause Solution - ActionObservations
The brake fluid level is too low. Top up using a brake fluid listed by
CITROËN.If the problem persists, contact
a CITROËN dealer or a qualified
workshop.
Fault with the braking system. You must stop as soon as it is safe to do so.Have the system checked by a
CITROËN dealer or a qualified
workshop.
Fault with the anti-lock braking
system (ABS). Contact a CITROËN dealer or a
qualified workshop.The vehicle retains conventional
braking without assistance but you
are advised to stop.
The tyre pressure is too low in one
or more tyres. Check the tyre pressures as soon
as possible.
This check should preferably
be done with the tyres cold.
You must reinitialise the system
after adjusting one or more tyre
pressures or after changing one or
more wheels.
For more information, refer to the
"Under-inflation detection system"
section.If the problem persists, contact
a C
ITR
oËn d

ealer or a qualified
workshop.
There is a fault with the under-
inflation detection system and/or
at least one wheel does not have a
detected sensor. The tyre pressures are no longer
monitored.
Have the system checked by a
CITROËN dealer or a qualified
workshop.
Monitoring

42
In the menu screen:
F p ress the INFO button to
select
"

REINITIALISE" (located in menu 2/3
or 3/3 depending on the instrument panel) :
Reinitialising the under-inflation
detection system (REINITIALISE)
You must reinitialise the under-inflation
detection system after adjusting one or more
tyre pressures or replacing one or more
wheels.
F

p
ress and hold the INFO button for at least
3 seconds .
There is an audible signal and the under-
inflation warning lamp flashes slowly until
reinitialisation is complete.
In the menu screen:
F

p

ress the INFO button to select the current
fuel consumption activation / deactivation
symbol (located in menu 2/3) :Activation / deactivation of the
current fuel consumption*
You can activate or deactivate the display
of the current fuel consumption, with the
type
2 instrument panel only.
F

p
ress and hold the INFO button for a few
seconds to scroll through the choices in
succession (ON, OFF).
* Depending on equipment.
In the menu screen:
F p ress the INFO button to select sound 1 or 2
(located in menu 2/3) :
Selection of the sound
for the direction indicators
You can select the sound for the direction
indicators, with the type 2 instrument panel only.
Monitoring

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.
4
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