check engine CITROEN C4 PICASSO 2010 Owner's Manual
Page 129 of 352
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127
SAFETY
TYRE UNDER-INFLATION DETECTION
Sensors fi tted in each valve check
the tyre pressure during driving and
trigger a warning in the event of
malfunction (speed above 12 mph
(20 km/h)).
Under-infl ated tyre The tyre under-infl ation detection
system is an aid to driving which
does not replace the vigilance or
responsibility of the driver.
Puncture
The service warning lamp
comes on in the instrument
panel, accompanied by an
audible signal and a mes-
sage on the multifunction screen lo-
cating the wheel concerned.
Check the tyre pressures as soon as
possible. This check must be carried
out when the tyres are cold. The STOP
warning lamp
comes on in the instrument
panel, accompanied by an
audible signal and a mes-
sage on the multifunction screen lo-
cating the wheel concerned.
Stop immediately, avoiding any sud-
den movement of the steering wheel
and the brakes.
Change the damaged wheel (punc-
tured or very defl ated tyre), and
have the tyre pressure checked as
soon as possible.
Sensor(s) not detected or faulty
The service warning lamp
comes on in the instrument
panel, accompanied by an
audible signal and a mes-
sage on the multifunction screen
locating the wheel or wheels which
are not detected or indicating a fault
in the system.
Have the faulty sensor(s) checked
by a CITROËN dealer or a qualifi ed
workshop. All repairs and changing of tyres
on a wheel fi tted with this system
must be carried out by a CITROËN
dealer or a qualifi ed workshop.
If, when changing a tyre, you in-
stall a wheel which is not detected
by your vehicle (example: fi tting
of snow tyres), you must have the
system reinitialised by a CITROËN
dealer or a qualifi ed workshop.
This system does not avoid the
need to have the tyre pressures
checked regularly (refer to the
"Technical data - Identifi cation
markings" section) to ensure that
the optimum dynamic performance
of the vehicle is maintained and
prevent premature wear of the
tyres, particularly in arduous driv-
ing conditions (heavy load, high
speed).
The tyre pressures must be
checked cold, at least once a
month. Remember to check the
pressure of the spare wheel.
The tyre under-infl ation detection
system may experience temporary
interference due to electro-magnetic
signals on a frequency close to that
used by the system.
This message is also displayed
when one of the wheels is away
from the vehicle (being repaired) or
when one or more wheels without a
sensor are fi tted.
The spare wheel is not fi tted with a
sensor.
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129
SAFETY
TRAJECTORY CONTROL
SYSTEMS
Anti-slip regulation (ASR)
and electronic stability
programme (ESP)
The anti-slip regulation (also known
as Traction Control) optimises trac-
tion to prevent skidding of the wheels,
by acting on the brakes of the driving
wheels and on the engine.
The electronic stability programme acts
on the brake of one or more wheels
and on the engine to keep the vehicle
on the trajectory required by the driver,
within the limits of the laws of physics.
Deactivation
In exceptional conditions (starting a
vehicle which is bogged down, stuck
in snow, on soft ground...), it may be
advisable to deactivate the ASR and
ESP systems, so that the wheels
can move freely and regain grip.
)
Press the "ESP OFF"
button, lo-
cated in the centre of the dash-
board.
If this warning lamp comes
on in the instrument panel
and the indicator lamp on the
button comes on, this indi-
cates that the ASR and ESP
systems are deactivated. This is indicated by fl ashing
of this warning lamp in the
instrument panel.
Activation
These systems are activated auto-
matically each time the vehicle is
started.
They come into operation in the event
of a grip or trajectory problem.
Intelligent Traction Control
system *
Your vehicle has a system to help
driving on snow.
This automatic system continuously
checks for situations of diffi cult sur-
face adhesion that could make it dif-
fi cult to move off or make progress
on deep fresh snow or compacted
snow.
In these situations, the system takes
over from the ASR
system by opti-
mising the amount of wheel slip to
provide the best traction and trajec-
tory control, even without snow tyres
and with or without chains.
In extremely severe conditions (snow
on top of ice, sand, deep mud…), it
can be useful to deactivate the ESP/
ASR
systems to allow a degree of
wheel spin and so recover grip.
*
Depending on engine type.
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130
SAFETY
Reactivation
These systems are reactivated au-
tomatically each time the ignition is
switched back on or from 30 mph
(50 km/h).
)
Press the "ESP OFF"
button again
to reactivate them manually.
Operating fault
If this warning lamp comes
on, accompanied by an au-
dible signal and a message
in the multifunction screen,
this indicates a malfunction of these
systems.
Have it checked by a CITROËN
dealer or a qualifi ed workshop. The ESP/ASR systems offer ex-
ceptional safety in normal driving,
but this should not encourage the
driver to take extra risks or drive at
high speed.
The correct operation of these sys-
tems depends on observation of
the manufacturer's recommenda-
tions regarding wheels (tyres and
rims), braking components, elec-
tronic components and assembly
and repair procedures.
After an impact, have these systems
checked by a CITROËN dealer or a
qualifi ed workshop.
EMERGENCY OR
ASSISTANCE CALL
This system allows you to make an
emergency or assistance call to the
emergency services or to the dedi-
cated CITROËN service.
For more information on the use of
this function, refer to the "Audio and
telematics" section.
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131
SAFETY
SEAT BELTS
Front seat belts
The front seat belts are fi tted with a
pretensioning system and force limiter.
This system improves safety in the front
seats in the event of a front impact.
Depending on the seriousness of the
impact, the pretensioning system in-
stantly tightens the seat belt against
the body of the occupant.
Fastening
)
Pull the belt down in front of you
in a steady movement, making
sure that it does not become
twisted.
)
Press the fastening into its buckle.
)
Check that it is properly secured
and that the automatic locking
mechanism operates correctly
by pulling sharply on the belt
strap.
)
The lap strap should be posi-
tioned as low down as possible in
the lap and as tight as possible.
)
The diagonal strap should be
positioned across the chest and
away from the neck.
Each belt has a reel that adjusts its
length automatically to the girth of
the seat occupant.
Height adjustment
The pretensioning seat belts are
active when the ignition is on.
The force limiter reduces the pres-
sure of the seat belt against the
chest of the occupant, so increasing
his protection.
When correctly adjusted, the seat
belt shoulder strap falls over the
middle of the shoulder.
)
To adjust the belt, squeeze the
control and slide it in the direc-
tion required.
Unfastening
)
To unfasten the belt, press on
the red button in the buckle.
The belt retracts automatically when
not in use.