brakes Citroen C4 PICASSO 2011.5 1.G Owner's Manual

VIII
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" sec-
tion) to ensure that the optimum
dynamic performance of the vehicle
is maintained and prevent prema-
ture wear of the tyres, particularly in
arduous driving 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.

VIII
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.

X
182
CHECKS















Brake pads

Brake wear depends on
the style of driving, par-
ticularly in the case of ve-
hicles used in town, over
short distances. It may be
necessary to have the condition of
the brakes checked, even between
vehicle services.
Unless there is a leak in the circuit, a
drop in the brake fl uid level indicates
that the brake pads are worn.







Manual gearbox

The gearbox does not re-
quire any maintenance (no
oil change).






6-speed electronic
gearbox system
The gearbox does not re-
quire any maintenance (no
oil change).






Automatic gearbox

The gearbox does not re-
quire any maintenance (no
oil change).

Brake disc wear

For information on checking
brake disc wear, contact a
CITROËN dealer or a quali-
fi ed workshop.






















Electric parking brake

This system does not require any
routine servicing. However, in the
event of a problem, have the system
checked by a CITROËN dealer or a
qualifi ed workshop.
For more information, see "Driving -
Electric parking brake - § Operating
faults". Refer to the servicing booklet for the
details of the level checking interval
for this component.
Refer to the servicing booklet for de-
tails of the checking interval for this
component.
Refer to the servicing booklet for de-
tails of the level checking interval for
this component.

XI
209
PRACTICAL INFORMATION

Towbar suitable for the attachment
of a trailer with additional lighting
and signalling.
Your vehicle is primarily designed
for transporting people and luggage,
but it may also be used for towing a
trailer.
We recommend the use of genuine
CITROËN towbars and their har-
nesses that have been tested and
approved from the design stage
of your vehicle, and that the fi t-
ting of the towbar is entrusted to
a CITROËN dealer or a qualifi ed
workshop.
If the towbar is not fi tted by a
CITROËN dealer, it is imperative
that it is fi tted in accordance with the
vehicle manufacturer's instructions.

Driving advice


Distribution of loads


)
Distribute the load in the trailer
so that the heaviest items are as
close as possible to the axle and
the nose weight approaches the
maximum permitted without ex-
ceeding it.
Air density decreases with altitude,
thus reducing engine performance.
Above 1 000 metres, the maximum
towed load must be reduced by 10 %
for every 1 000 metres of altitude.
Refer to the "Technical Data" section
for details of the weights and towed
loads which apply to your vehicle.

Side wind


)
Take into account the increased
sensitivity to side wind.


)
To lower the engine speed, re-
duce your speed.
The maximum towed load on a long
incline depends on the gradient and
the ambient temperature.
In all cases, keep a check on the
coolant temperature.


)
If the warning lamp and
the STOP
warning lamp
come on, stop the vehicle
and switch off the engine
as soon as possible.


Braking
Towing a trailer increases the brak-
ing distance.
To avoid overheating of the brakes
on a long mountain type of descent,
the use of engine braking is recom-
mended.

Tyres


)
Check the tyre pressures of the
towing vehicle and of the trailer,
observing the recommended
pressures.


Lighting


)
Check the electrical lighting and
signalling on the trailer.
The rear parking sensors will be
deactivated automatically if a gen-
uine CITROËN towbar is used.
Driving with a trailer places greater
demands on the towing vehicle and
the driver must take particular care.

Cooling
Towing a trailer on a slope increases
the temperature of the coolant.
As the fan is electrically controlled,
its cooling capacity is not dependent
on the engine speed.

342
ALPHABETICAL INDEX
ABS and EBFD systems ........ 128Accessories...........................211Accessory socket, 12 V .........107Access to the 3rd row..............72Adjusting headlamps...............98Adjusting head restraints...67,70Adjusting seat belt height.......131Adjusting the steering wheel ....77Airbags, curtain..............137,138Airbags, front.........................138Airbags, lateral ...............137,138Air conditioning..................29,56Air conditioning, additional.......60Air conditioning, digital .............60Air conditioning, manual..........58Air distribution adjustment...t58,60Air filter...................................r181Air flow .....................................29Air flow adjustment ..................60Air recirculation..................58,60Air vents...................................56Alarm.......................................84Anti-lock brakingsystem (ABS).......................128Anti-pinch...........................86,91Anti-theft ..................................80Armrest, front...........................67Ashtray, portable....................107Assistance call ...............130,228Athermic windscreen.............105Audible warning.....................126Audio streaming (Bluetooth)...319Audio system ...307,309, 322,324Automatic illumination
of headlamps...................94,97Automatic operation of hazard
warning lamps .....................126
Automatic rain sensitivewindscreen wipers .......100, 101Auxiliary socket.............258,259,294,314, 316
Changing a wiper blade ......... 102Changing the date ...264, 298,321Changing the remote controlbattery....................................82Changing the time ...264, 298,321Checking levels.............. 179,180Checking the engine oil level ...43Checks ...........177,178, 181,182Child lock............................... 125Children .................120, 123,124Child seats .................... 117,119Child seats, conventional ....... 120Child surveillance mirror........r105Cigar lighter...........................r107CITROËN call button ............. 229CITROËN services ................ 229Closing the boot .................79,90Closing the doors ...............79,88Cold climate screen ............... 210Cold storage ......................... 107Concertina boards ...................74Connectors, audio......... 108, 253,
254,294, 314,316Control panel ......................... 276Coolant level .......................... 180Courtesy lamps .............. 103,196Cruise control......................... 164Cup holder.............................r107
AAC
BBackup starting......................203Bag hook................................112Battery...........................181, 203Battery, charging....................203Battery, remote control.......82,83Battery compartment
fuse box...............................197Blind for panoramic sunroof.....f91Blinds.............................105, 110Bluetooth(hands-free).........295,296, 317Bluetooth(telephone)..........261,295, 296Bonnet...................................174Bonnet stay............................174Boot.........................................90Boot lamp.......................116, 196Brake discs............................182Brake lamps...................194, 195Brake pads.............................182Brakes....................................182Braking assistance system....128
Date (setting) ...264,298, 320,321Daytime runninglamps.....................96, 190,193Deactivating the passenger airbag.................135Deadlocking.............................79Demisting the rear screen....58,60Diesel additive level...............180
Capacity, fuel tank...................92Cargo net..............................114CD MP3.................252,293, 313Central locking .............79, 88,89Centre console.......................107Changing a bulb.....190,194, 195Changing a fuse.....................197Changing a wheel..................186
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