four wheel drive Citroen GRAND C4 PICASSO RHD 2017 2.G Owner's Manual

202
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.
Driving

203
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.
4
Driving

232
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
function " 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
function " 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.
Safety

319
To w i n g
The towing eye is installed in the boot under
the floor.
The front protective cover opening tool is fixed
on the towing eye.
To gain access to it:
F
o
pen the boot,
F

l
ift the floor and remove it,
F

r
emove the towing eye from its housing.
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 the towing eye.
Access to the tools
8
In the event of a breakdown