2016 Citroen DS4 sensor

DS4_en_Chap05_visibilite_ed03-2015
C. Foglamp selection ring.
The foglamps operate with the dipped and main
beam headlamps.
Rotate and release the ring C:
F

f
or wards a first time to switch on the front
foglamps,
F

f
or wards a second time to switch on the
rear foglamps,
F

r
ear wards a first time to switch off the rear
foglamps,
F

r
ear wards a second time to switch off the
front foglamps.
Model with front and rear
foglamps
In good or rainy weather, by both day
and night, the front foglamps and the
rear foglamps are prohibited. In these
situations, the power of their beams
may dazzle other drivers. They should
only be used in fog or falling snow.
In these weather conditions, you should
switch on the foglamps and dipped
beam headlamps manually, as the
sunshine sensor may detect sufficient
light.
Do not forget to switch off the front and
rear foglamps when they are no longer
necessary.
front and rear foglamps
When the headlamps switch off with automatic
illumination of headlamps (AUTO model)
or when the dipped beam headlamps are
switched off manually, the foglamps and
sidelamps remain on.
F

T

urn the ring rear wards to switch off the
foglamps, the sidelamps will then switch off.

DS4_en_Chap05_visibilite_ed03-2015
When a low level of ambient light is detected
by a sunshine sensor, the number plate
lamps,
s
idelamps and dipped beam headlamps
are switched on automatically, without any
action on the part of the driver. They can also
come on if rain is detected, at the same time as
automatic operation of the windscreen wipers.
As soon as the ambient light returns to a
sufficient level or after the windscreen wipers
are switched off, the lamps are switched off
automatically.
Activation
F Turn the ring to the "AUTO" position. The
activation of the function is accompanied
by the display of a message in the screen.
deactivation
F Turn the ring to another position. Deactivation of the function is accompanied
by the display of a message in the screen.
Automatic guide-me-home
lighting
Operating fault
In the event of a malfunction of the
sunshine sensor, the lighting comes
on, this warning lamp is displayed
in the instrument panel and/or a
message appears in the screen,
accompanied by an audible signal. In fog or snow, the sunshine sensor
may detect sufficient light. In this
case, the lighting will not come on
automatically.
Do not cover the sunshine sensor,
coupled with the rain sensor and
located in the centre of the windscreen
behind the rear view mirror; the
associated functions would no longer
be controlled.
When the automatic illumination of headlamps
function is activated (lighting control stalk in the
"
AUTO " position), under low ambient light the
dipped beam headlamps remain on when the
ignition is switched off.
Programming
Activation or deactivation, as well
as the duration of the guide-me-
home lighting, is set in the vehicle
configuration menu.
Contact a CITROËN dealer or a qualified
workshop.
Automatic illumination of headlamps

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DS4_en_Chap05_visibilite_ed03-2015
Welcome lighting
The remote switching on of the lighting makes your access to the vehicle easier in poor light. It is
activated depending on the ambient light level detected by the sunshine sensor.
Switching onSwitching off
F Press the open padlock on the
remote control or one of the front
door handles with the "Keyless
Entry and Starting" system.
The sidelamps and dipped beam headlamps,
as well as the side spotlamps, located under
the door mirrors, come on; your vehicle is also
unlocked. Activation or deactivation, as well as
the duration of the lighting duration
for the welcome lighting can be set
via the vehicle configuration menu.
Programming
The welcome lighting switches off automatically
after a programmed time, when the ignition is
switched on or on locking the vehicle.
Visibility

DS4_en_Chap05_visibilite_ed03-2015
Automatic rain sensitive
windscreen wipers
The windscreen wipers operate automatically,
without any action on the part of the driver,
if rain is detected (sensor behind the rear view
mirror), adapting their speed to the intensity of
the rainfall.
Switching on
Briefly push stalk A downwards.The instruction is confirmed by
a wiping cycle, accompanied by
illumination of this warning lamp
in the instrument panel and an
activation message.
Switching off
Briefly push stalk A downwards again.
The instruction is confirmed by
this warning lamp going off in the
instrument panel and/or the display
of a deactivation message.
The automatic rain sensitive
windscreen wipers must be reactivated
if the ignition has been off for more
than one minute.
Operating fault
If an automatic rain sensitive wiper malfunction
occurs, the wipers will operate in intermittent
mode.
Contact a CITROËN dealer or a qualified
workshop. Do not cover the rain sensor, linked with
the sunshine sensor and located in the
centre of the windscreen behind the rear
view mirror.
Switch off the automatic rain sensitive
wipers when using an automatic car wash.
In winter, it is advisable to wait until the
windscreen is completely clear of ice
before activating the automatic rain
sensitive wipers.

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DS4_en_Chap08_conduite_ed03-2015
When towing
distribution of loads
F 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
exceeding
it.
Air density decreases with altitude, thus
reducing engine per formance. Above
1
000 metres, the maximum towed load must
be reduced by 10
% for every 1 000 metres of
altitude.
Side wind
F Take into account the increased sensitivity to side wind.
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.
F

T
o lower the engine speed, reduce 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.
F

I
f 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 braking distance.
To avoid overheating of the brakes, the use of
engine braking is recommended.
Ty r e s
F Check the tyre pressures of the towing vehicle and of the trailer, observing the
recommended pressures.
Lighting
F Check the electrical lighting and signalling on the trailer and the hadlamp beam height
of your vehicle.
For more information on adjusting the
headlamp beam height, refer to the
corresponding section.
For more information on weights (and
the towed loads which apply to your
vehicle) refer to the corresponding
section.
The rear parking sensors will be
deactivated automatically if a genuine
CITROËN towbar is used.
driving

DS4_en_Chap08_conduite_ed03-2015
Tyre under-inflation detection
System which automatically checks the
pressures of the tyres while driving.
The system continuously monitors the
pressures of the four tyres, as soon as the
vehicle is moving.
A pressure sensor is located in the valve of
each tyre (except the spare wheel).
The system triggers an alert if a drop in
pressure is detected in one or more tyres.Driving with under-inflated tyres
increases fuel consumption.The tyre pressures for your vehicle
can be found on the tyre pressure
label (see the "Identification markings"
section).
The tyre pressures must be checked
when the tyres cold (vehicle stopped
for 1 hour or after driving for less then
6 miles (10 km) at moderate speed).
Other wise, add 0.3 bar to the values
indicated on the label.
This system does not avoid the need
to check the tyre pressures regularly
(including the spare wheel) and before
a long journey.
Driving with under-inflated tyres
adversely affects road holding,
extends braking distances and causes
premature tyre wear, particularly under
arduous conditions (vehicle loaded,
high speed, long journey).
The tyre under-inflation detection system is an
aid to driving which does not replace the need
for vigilance on the part of the driver.

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DS4_en_Chap08_conduite_ed03-2015
Under-inflation alert
The loss of pressure detected does
not always lead to visible deformation
of the tyre. Do not rely on just a visual
check.This alert is also displayed when one or
more wheels is not fitted with a sensor
(for example, a space-saver or steel
spare wheel).
The alert is maintained until the tyre or
tyres concerned is reinflated, repaired
or replaced.
The spare wheel (space-saver type or
a steel rim) does not have a sensor.
The alert is given by the fixed illumination
of this warning lamp, accompanied by
an audible signal, and depending on
equipment, the display of a message.
In the event of a problem on one of the tyres,
the symbol or the message appears, according
to equipment, to identify it.
F

R
educe speed, avoid sudden steering
movements or harsh brake applications.
F

S
top as soon as it is safe to do so.
Operating fault
The flashing and then fixed
illumination of the under-inflation
warning lamp accompanied by the
illumination of the service warning
lamp indicates a fault with the system.
Go to a CITROËN dealer or a qualified
workshop
to have the system checked or,
following the repair of a puncture, to have the
original wheel, equipped with a sensor, refitted.
F
I
f you have a compressor (the one in the
temporary puncture repair kit for example),
check the four tyre pressures when cold.
I

f it is not possible to check the tyre
pressures at the time, drive carefully at
reduced speed.


or
F

I

n the event of a puncture, use the
temporary puncture repair kit or the spare
wheel (according to equipment).
Any tyre repair or replacement on a wheel
fitted with this system must be carried out by a
CITROËN dealer or a qualified workshop.
If after changing a tyre, a wheel is not detected
by your vehicle (fitting snow tyres for example),
you must have the system reinitialised by a
CITROËN dealer or a qualified workshop. In this case, monitoring of the tyre pressures is
not assured.
driving

DS4_en_Chap08_conduite_ed03-2015
Lane departure warning system
System which detects the involuntary crossing
of longitudinal traffic lane markings on the
ground (solid or broken line).
Sensors, fitted below the front bumper, trigger
a warning if the vehicle drifts over a lane
marking (speed higher than 50 mph (80 km/h)).
This system is particularly useful on motor ways
and main roads.
Activation
F When switching the ignition on or with the engine running, press this button; the
indicator lamp comes on.
The lane departure warning system
cannot in any circumstances replace
the need for vigilance on the part of the
driver.
It is necessary to observe driving
regulations and take a break every
two

hours.
deactivation
You are warned by the vibration of the driver's
seat cushion:
-
o
n the right-hand side, if the marking on
the ground has been crossed on the right,
-

o
n the left-hand side, if the marking on the
ground has been crossed on the left.
No warning is transmitted while the direction
indicator is active and for approximately
20
seconds after the direction indicator is
switched off.
A warning may be transmitted if a direction
marking (e.g. arrow) or non-standard marking
(e.g. graffiti) is crossed.
detection Operating fault
The detection may be impeded:
- i
f the sensors are dirty (mud, snow...),
-

i
f the markings on the ground are
worn,
-

i
f there is little contrast between
the markings on the ground and
the road sur face.
F

P

ress this button again, the indicator lamp
goes off.
The status of the system remains in the
memory when the ignition is switched off. In the event of a malfunction, the
service warning lamp comes on,
accompanied by an audible signal
and a message in the screen.
Contact a CITROËN dealer or a qualified
workshop.