2017 Citroen GRAND C4 PICASSO wheel

205
C4-Picasso-II_en_Chap04_conduite_ed02-2016
Under-inflation detection
The system monitors the pressures in 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 need for vigilance
on the part 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 conditions
(high loading, high speed, long journey).
System which automatically checks the pressures of the tyres while driving.
The inflation pressures defined for
your vehicle can be found on the tyre
pressure label.
For more information on the
Identification markings, refer to the
corresponding section.
Driving with under-inflated tyres
increases fuel consumption. Checking tyre pressures
This check should be done 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, add 0.3 bar to the pressures
shown on the label.
4
Driving

206
C4-Picasso-II_en_Chap04_conduite_ed02-2016
Under-inflation alertReinitialisation
This is given by fixed illumination of
this warning lamp, accompanied by
an audible signal and, depending on
equipment, the display of a message. It is necessary to reinitialise the system every
time one or more tyre pressures are adjusted,
and after changing one or more wheels.
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.
F

I
f 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 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.
Snow chains
The system does not have to be
reinitialised after fitting or removing
snow chains. 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 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.
Driving

221
C4-Picasso-II_en_Chap05_eclairage-visibilite_ed02-2016
Cornering lighting
This system, if fitted to your vehicle, makes use
of the beam from a front foglamp to illuminate
the inside of a bend, when the main or dipped
beam headlamps are on and the vehicle speed
is below 25 mph (40 km/h) (urban driving,
winding road, junctions, parking manoeuvres,
e t c .) .with cornering lighting
without cornering lighting
Switching on
This system starts:
-
w hen the corresponding direction indicator
is switched on,
or
-

f
rom a certain angle of rotation of the
steering wheel.
Switching off
The system does not operate:
- b elow a certain angle of rotation of the
steering wheel,
-

a
bove 25 mph (40 km/h),
-

w
hen reverse gear is engaged.
The cornering lighting can be activated or
deactivated in the Driving menu.
F

Sel
ect the " Vehicle settings " tab, then
" Driving lighting " and "Directional
headlamps ".
5
Lighting and visibility

230
C4-Picasso-II_en_Chap06_securite_ed02-2016
Hazard warning lamps
Visual warning with all of the direction
indicators flashing to alert other road users to a
vehicle breakdown, towing or accident.
F
P
ress this button, all of the direction
indicators flash.
They can operate with the ignition off.
Automatic operation of
hazard warning lamps
When braking in an emergency, depending on
the deceleration, the hazard warning lamps
come on automatically.
They switch off automatically the first time you
accelerate.
F

Y
ou can also switch them off by pressing
the button.
Horn
F Press the central part of the steering wheel.
Safety

233
C4-Picasso-II_en_Chap06_securite_ed02-2016
Electronic stability control (ESC) incorporating
the following systems:
-
a
nti-lock braking system (ABS) and
electronic brake force distribution (EBFD),
-

e
mergency braking assistance (EBA),
-

w
heel anti-slip regulation (ASR) or traction
control,
-

d
ynamic stability control (DSC).
Electronic stability control (ESC)
Definitions
Anti-lock braking system (ABS)
and electronic brake force
distribution (EBFD)
These systems improve the stability and
manoeuvrability of your vehicle when braking
and contribute towards improved control on
corners, in particular on poor or slippery road
surfaces.
The ABS prevents wheel lock in the event of
emergency braking.
The EBFD manages the braking pressure
wheel by wheel.
Emergency braking assistance
(EBA)
In an emergency, this system enables you to
reach the optimum braking pressure more
quickly and therefore reduce the stopping
distance.
It is triggered according to the speed at which
the brake pedal is pressed. This is felt by a
reduction in the resistance of the pedal and an
increase in the effectiveness of the braking.
Anti-slip regulation (ASR)
This system (also known as Traction Control)
optimises traction in order to limit wheel slip by
acting on the brakes of the driving wheels and
on the engine. It also improves the directional
stability of the vehicle on acceleration.
Dynamic stability control (DSC)
If there is a difference between the path
followed by the vehicle and that required by
the driver, the DSC monitors each wheel and
automatically acts on the brake of one or more
wheels and on the engine to return the vehicle
to the required path, within the limits of the laws
of physics.
6
Safety

234
C4-Picasso-II_en_Chap06_securite_ed02-2016
Intelligent traction control
system ("Snow motion")
When this warning lamp comes on,
coupled with the STOP and ABS warning
lamps, accompanied by an audible signal
and a message, it indicates that there
is a fault with the electronic brake force
distribution (EBFD).
Anti-lock braking system (ABS) and electronic brake force
distribution (EBFD)
The fixed illumination of this warning
lamp indicates that there is a fault
with the ABS. Depending on version, your vehicle has a
system to help driving on snow: intelligent
traction control
.
This system detects situations of difficult
sur face grip that could make it difficult to move
off or make progress on deep fresh snow or
compacted snow.
In these situations, the intelligent traction
control limits the amount of wheel spin to
provide the best traction and trajectory control
for your vehicle.
The use of snow tyres is strongly
recommended on sur faces offering low levels
of adhesion.
When changing wheels (tyres and
rims), ensure that these are approved
for your vehicle.
Normal operation of the ABS may make
itself felt by slight vibrations of the brake
pedal.
In emergency braking, press ver y
firmly and maintain this pressure.
You must stop as soon as it is safe to do so.
In both cases, have the system checked by a
CITROËN dealer or a qualified workshop as
soon as possible. The vehicle retains conventional braking. Drive
carefully at moderate speed.
Safety

235
C4-Picasso-II_en_Chap06_securite_ed02-2016
Anti-slip regulation (ASR) / Dynamic stability control (DSC)
Operation
These systems are activated automatically
every time the vehicle is started.
They come into operation in the event of a
problem of grip or trajectory.
Deactivation of the ASR
In exceptional conditions (starting a vehicle
which is bogged down, stuck in snow, on soft
ground, etc.), it may be advisable to deactivate
the ASR, so that the wheels can turn freely and
regain grip.
Reactivate the systems as soon as the level of
grip permits.This is indicated by flashing of this
warning lamp in the instrument panel.
F
I
n the Driving menu, select the " Driving
functions " tab, then " Traction control".
Deactivation is confirmed by a message.
The ASR system will no longer act on the
operation of the engine or on the brakes in the
event of an involuntary change of trajectory.Operating fault Reactivation of the ASR
The system is reactivated automatically every
time the ignition is switched back on or from
30 mph (50 km/h).
Below 30 mph (50 km/h), you can reactivate it
manually:
F

I
n the Driving menu, select the " Driving
functions " tab, then " Traction control".
Illumination of this warning lamp,
accompanied by an audible signal
and a message, indicates a fault with
these systems.
Contact a CITROËN dealer or a qualified
workshop to have the systems checked.
ASR / DSC
These systems offer even greater
safety during normal driving, but they
should not encourage the driver to take
extra risks or drive at excessive speed.
When traction deteriorates (rain, snow,
ice), the risks of loss of grip increase.
Therefore, for your safety, it is essential
that these systems are left active in all
conditions, and particularly in difficult
conditions.
The operation of these systems
is assured provided that the
manufacturer's recommendations
concerning the wheels (tyres and rims),
the braking components, the electronic
components and the CITROËN
network
fitting and repair procedures are
complied with.
To ensure the effectiveness of these
systems in winter conditions, it is
essential that the vehicle is fitted with
four snow tyres which will enable the
vehicle to retain neutral handling.
After an impact, have the systems
checked by a CITROËN dealer or a
qualified workshop.
6
Safety

242
C4-Picasso-II_en_Chap06_securite_ed02-2016
Deactivation
When the ignition is on, this warning
lamp comes in the instrument
panel. It stays on while the airbag is
deactivated.
Front airbags
Deployment
The airbags are deployed, except the
passenger's front airbag if it is deactivated, in the
event of a serious front impact to all or part of the
front impact zone A , in the longitudinal centreline
of the vehicle on a horizontal plane and directed
from the front to the rear of the vehicle.
The front airbag inflates between the thorax and
head of the front occupant of the vehicle and the
steering wheel, driver's side, and the dashboard,
passenger's side to cushion their for ward
movement.
System which protects the driver and front
passenger in the event of a serious front impact
in order to limit the risk of injury to the head and
thorax.
The driver's airbag is fitted in the centre of the
steering wheel; the front passenger's airbag is
fitted in the dashboard above the glove box.
Only the passenger's front airbag can be
deactivated.
F

W
ith the ignition off, insert the key in the
passenger airbag deactivation switch.
F

T
urn it to the "OFF" position.
F

R
emove the key keeping the switch in the
new position. To assure the safety of your child,
the passenger's front airbag must be
deactivated when you install a rear ward
facing child seat on the front passenger
seat.
Other wise, the child would risk being
seriously injured or killed if the airbag
were deployed.
Reactivation
When you remove the rear ward facing child
seat, with the ignition off
, turn the switch to
the "ON" position to reactivate the airbag and
so assure the safety of your front passenger in
the event of an impact.
When the ignition is switched on,
this warning lamp comes on in the
instrument panel for approximately
one minute to signal that the front
airbag is activated.
Operating fault
If this warning lamp comes on in the
instrument panel, you must contact
a CITROËN dealer or a qualified
workshop to have the system checked.
The airbags may no longer be deployed
in the event of a serious impact.
Safety