2021 CITROEN C4 CACTUS inflation pressure

16
Under-inflationFixed, accompanied by an
audible signal and a message. The pressure in one or more tyres is
too low. Check the pressure of the tyres as soon as
possible.
Reinitialise the detection system after
adjusting the pressure.
+ Under-inflation
Flashing then fixed,
accompanied by the Ser vice
warning lamp. The system is faulty: tyre pressures
are no longer monitored.
As soon as possible, check the pressure of
the tyres and carry out (3).
Diesel engine
pre-heating Fixed.
The period of illumination
depends on the climatic
conditions. The ignition is on.
Wait until the lamp goes off before starting.
If the engine does not start, switch the
ignition off and then on, wait until the lamp
goes off again, then start the engine.
Front passenger
airbag (ON) Fixed.
The front passenger airbag is
activated.
The control is in the "ON" position. In this case, do NOT install a "rear ward
facing" child seat on the front passenger
seat – Risk of serious injur y!
Front passenger
airbag (OFF) Fixed.
The front passenger airbag is
deactivated.
The control is in the "OFF" position. You can install a "rear ward facing" child
seat, unless there is a fault with the airbags
(Airbags warning lamp on).
Airbags Fixed. One of the airbags or seat belt
pyrotechnic pretensioners is faulty. Carry out (3).
Warning/indicator lamp
State Cause Action/Observations
Instruments

132
Recommendations on care
- Regularly check that the sensors and cameras are clean.
If necessary, clean the camera lenses with
a soft, dry cloth.
-

I
f using a high-pressure washer, do not
direct the lance less than 30 cm from the
sensors and cameras.
-

I
n bad weather, or during the winter, ensure
that the sensors and cameras are not
covered with mud, ice or snow.
Operating faults
When the function is not activated,
the button warning lamp flashing
and an audible signal indicates a
system fault.
If the fault occurs during the use of the system,
the warning lamp goes off.
If the fault in the parking sensors,
indicated by this warning lamp
coming on, occurs during use, it
causes the function to deactivate.
In the event of a fault, have the system checked
by a CITROËN dealer or a qualified workshop. In the event of a fault with the
power steering, this warning lamp
flashes in the instrument panel,
accompanied by a message.
You must stop as soon as it is safe to do so.
Contact a CITROËN dealer or a qualified
workshop.
Tyre under-inflation
detection
System which automatically checks the
pressures of the tyres while driving.
The system monitors the pressure in all four
tyres, as soon as the vehicle is moving.
It compares the information given by the
wheel speed sensors with reference values,
which must be reinitialised after ever y tyre
pressure adjustment or wheel change .
The system triggers an alert as soon as it
detects a drop in the pressure of one or more
tyres. The tyre under-inflation detection system
does not replace the need for vigilance on
the part of the driver.
This system still requires you to check the
tyre inflation pressure (including the spare
wheel) every month as well as before a
long journey.
Driving with under-inflated tyres impairs
handling, extends braking distances and
causes premature tyre wear, particularly
in adverse conditions (heavy loads, high
speeds, long journeys).
Driving with under-inflated tyres
increases fuel consumption.
The tyre pressure specifications for your
vehicle can be found on the tyre pressure
label.
For more information on the
Identification markings , refer to the
corresponding section.
Driving

133
Tyre pressures should be checked when
the tyres are "cold" (vehicle stopped for
1 hour or after a journey of less than
6 miles (10 km) at moderate speeds).
Other wise (when hot), add 0.3 bar to the
pressures shown on the label.
Under-inflation alert
This warning is indicated by
continuous illumination of this lamp,
an audible signal and a message
displayed on the screen.
F

R

educe speed immediately, avoid excessive
steering movements and sudden braking.
F

S

top as soon as it is safe to do so.
The loss of pressure detected does not
always cause visible bulging of the tyre.
Do not rely on a simple visual check. F

I
f you have a compressor (such as the
one in the temporary puncture repair kit),
check the pressures of the four tyres when
cold. If it is not possible to make this check
immediately, drive carefully at reduced
speed.
or
F
I
n the event of a puncture, use the
temporary puncture repair kit or the spare
wheel (depending on equipment).
The warning remains active until the
system is reinitialised.
Reinitialisation
The system must be reinitialised after any
adjustment to the pressures of one or more
tyres, and after changing one or more wheels. Before reinitialising the system, ensure
that the pressures of the four tyres
are correct for the conditions of use
of the vehicle and conform to the
recommendations on the tyre pressure
label.
The under-inflation alert can only be relied
on if the reinitialisation of the system has
been done with the pressures in the four
tyres correctly adjusted.
The under-inflation detection system
does not give a warning if a pressure is
incorrect at the time of reinitialisation.
Reinitialisation of the system is done via the
touch screen, with the ignition on and the
vehicle stationary .
F I n the Driving/Vehicle menu,
select the " Driving functions "
tab, then " Reset under-
inflation detection ".
F

Sel
ect "Ye s" to confirm.
The reinitialisation is confirmed by the display
of a message and an audible signal.
Snow chains
The system does not have to be
reinitialised after fitting or removing snow
chains.
6
Driving

134
The under-inflation alert can only be relied
on if the reinitialisation of the system has
been done with the pressures in the four
tyres correctly adjusted.
Operating fault
The flashing and then fixed illumination of the
under-inflation warning lamp accompanied
by illumination of the Ser vice warning lamp
indicates a fault in the system.
In this case, under-inflation monitoring of the
tyres is no longer assured.
Have the system checked by a CITROËN
dealer or a qualified workshop.After carrying out any work on the system,
the pressures of the four tyres must be
checked and the system reinitialised.
Driving

154
Under-inflation detection
After repair of the tyre, the warning
lamp will remain on until the system is
reinitialised.
For more information on Tyre under-
inflation detection, refer to the
corresponding section.
Access to the kit
This kit is installed in the storage box, under
the boot floor.
List of tools
1. Temporary puncture repair kit.
Contains a sealant cartridge for the
temporary repair of a tyre and can also be
used for adjusting tyre pressures.
2. Socket for the security bolts (located in the
glove box or in the tool box) (depending on
ve r s i o n).
Ser ves for adapting the wheelbrace to the
special "security" bolts.
3. Removable towing eye.
For more information on Towing the vehicle
and using the removable towing eye, refer to
the corresponding section.
Composition of the kit
1. 12 V compressor, with built-in pressure
gauge.
2. Bottle of sealant, with built-in hose.
3. Speed limit sticker.
Repair procedure
F Park the vehicle without obstructing any
traffic and apply the parking brake.
F

F
ollow the safety instructions (hazard
warning lamps, warning triangle, wearing
high visibility vest, etc.) according to the
legislation in force in the country where you
are driving. The tyre inflation pressures are given on
this label.
In the event of a breakdown

155
F Uncoil the pipe stowed under the compressor.
Avoid removing any foreign bodies which
have penetrated into the tyre. F

R
emove the valve cap from the tyre to be
repaired, and place it in a clean area.
F
C
heck that the compressor switch is at the
" O " position.
F

U
ncoil fully the electric cable, stowed under
the compressor.
F

A
ffix the speed limit sticker.The speed limit sticker must be secured
to the interior of the vehicle in the driver's
field of vision, to remind you that a wheel
is in temporary use.
F

S
witch on the ignition.
F

S
witch off the ignition.
F
C
onnect the pipe from the compressor to
the bottle of sealant.
F

T
urn the sealant bottle over and secure it in
the cut-out provided on the compressor. F

C
onnect the hose from the bottle of sealant
to the valve of the tyre to be repaired and
tighten firmly.
F

C
onnect the compressor's electrical
connector to the vehicle's 12 V socket. The tyre inflation pressures are given on
this label.
F

S
tart the compressor by turning the switch
to the " l" position until the pressure of the
tyre reaches 2.0 bars. The sealant product
is injected under pressure into the tyre; do
not disconnect the hose of the valve during
this operation (risk of blowback).
8
In the event of a breakdown

156
After about 7 minutes, if a pressure of
2 bars is not reached, this indicates
that the tyre is not repairable; contact a
CITROËN dealer or a qualified workshop
for assistance.
F

P
lace the switch in the " O" position.
F

D
isconnect the compressor's electric plug
from the vehicle's 12 V socket.
F

R
efit the cap on the valve.
F

R
emove the kit.
F

R
emove and then store the bottle of sealant.
Take care, the sealant product is harmful
if swallowed and causes irritation to the
eyes.
Keep this product out of the reach of
children.
The use-by date is marked on the bottle.
After use, do not discard the bottle by the
roadside, take it to a CITROËN dealer or
an authorised waste disposal site.
Do not forget to obtain a new bottle of
sealant, available from a CITROËN dealer
or a qualified workshop. Do not exceed the speed of 50 mph
(80
km/h) when driving with a tyre
repaired using this type of kit.
Checking/adjusting
tyre pressures
You can also use the compressor,
without injecting sealant, to check and, if
necessary, adjust the tyre pressures F

C
heck that the compressor switch is at the
" O " position.
F
U
ncoil fully the electric cable, stowed under
the compressor.
The tyre inflation pressures are given on
this label.
F

D
rive immediately for approximately three
miles (five kilometres), at reduced speed
(between 12 and 37 mph (20 and 60 km/h)),
to plug the puncture.
F

S
top to check the repair and measure the
tyre pressure using the kit.
F

R
emove the valve cap from the tyre and
place it in a clean area.
F

U
ncoil the pipe stowed under the
compressor. F

S
crew the pipe onto the valve and tighten
f i r m l y.
F
C
onnect the compressor's electrical
connector to the vehicle's 12 V socket.
F
S
witch on the ignition.
In the event of a breakdown

157
If a pressure of 2 bars is not reached after
7 minutes, this indicates that the tyre is
not repairable; contact a CITROËN dealer
or a qualified workshop for assistance.
F

O
nce the correct pressure is reached, put
the switch to the " O" position.
F

R
emove the kit then stow it. Do not drive more than 125 miles (200 km)
with the repaired tyre; see a CITROËN
dealer or a qualified workshop to change
the tyre.
Should the pressure of one or more tyres
be adjusted, it is necessary to reinitialise
the under-inflation detection system.
For more information on Tyre under-
inflation detection
, refer to the
corresponding section.
F

S
tart the compressor by placing the switch
at the " I" position and adjust the pressure
to the value shown on the vehicle's tyre
pressure label. To deflate: press the black
button located on the compressor pipe, near
the valve connection.
Spare wheel
Scan the QR code on page 3 to view
explanatory videos.
Procedure for changing a damaged wheel with
the spare wheel using the tools provided with
the vehicle.
Access to tools
List of tools
The tools are installed in the boot under the
f l o o r.
Remove the boot carpet for access.
1. Wheelbrace.
2. Jack with built-in handle.
Used to raise the vehicle.
8
In the event of a breakdown