2014 Citroen C4 CACTUS four wheel drive

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Tyre under-inflation detection
The system monitors the pressures on the four
tyres, once the vehicle is moving.
It compares the information given by the four
wheel speed sensors with reference values,
which must be reinitialised ever y time the
tyre pressures are adjusted or a wheel
changed.
The system triggers an alert as soon as it
detects a drop in the inflation pressure of one
or more tyres. The under-inflation detection system
does not replace the vigilance or the
responsibility of the driver.
This system does not avoid the need to
check the tyre pressures (including the
spare wheel) every month as well as
before a long journey.
Driving with under-inflated tyres impairs
road holding, extends braking distances
and causes premature tyre wear,
particularly under arduous condition
(high loading, high speed, long journey).
System which automatically checks the pressure of the tyres while driving.
The inflation pressures defined for
your vehicle can be found on the tyre
pressure label.
See the "Identification markings"
section.
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.
Driving with under-inflated tyres
increases fuel consumption.
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Safety

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Under-inflation alertReinitialisation
Before reinitialising the system, ensure
that the pressures of the four tyres are
correct for the use of the vehicle and in
line with the recommendations on the
tyre pressure label.
The under-inflation detection system
does not give a warning if a pressure is
incorrect at the time of reinitialisation.
This is given by fixed illumination of
this warning lamp, accompanied by
an audible signal and the display of a
message.
It is necessary to reinitialise the system every
time one or more tyre pressure is adjusted, and
after changing one or more wheels.
A label attached to the middle pillar, driver's
side, gives a reminder of this.
F

R

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

S

top the vehicle as soon as it is safe to do
so. 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 carry out this check
straight away, 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 loss of pressure detected does not
always cause visible bulging of the tyre.
Do not satisfy yourself with just a visual
check. The alert is maintained until the system
is reinitialised.
Safety

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To w i n g
General recommendations
Observe the legislation in force in your country.
Ensure that the weight of the towing vehicle is higher than that of the towed vehicle.
The driver must remain at the wheel of the towed vehicle and must have a valid driving licence.
When towing a vehicle with all four wheels on the ground, always use an approved towing
arm; rope and straps are prohibited.
The towing vehicle must move off gently.
When towing a vehicle with the engine off, there is no longer any power assistance for braking
or steering.
In the following cases, you must always call on a professional recovery service:
-
v
ehicle broken down on a motor way or fast road,
-
f

our-wheel drive vehicle,
-

w
hen it is not possible to put the gearbox into neutral, unlock the steering, or release
the parking brake,
-

t
owing with only two wheels on the ground,
-

w
here there is no approved towing arm available...
Procedure for having your vehicle towed or for towing another vehicle using a removable towing eye.
The towing eye is stowed under the boot floor,
or may be located under the front passenger
seat, depending on version.
9
Practical information