Page 136 of 436

DS4_en_Chap05_visibilite_ed03-2015
Automatic adjustment of xenon and
full-LEd headlamps
In the event of a fault, do not touch the
xenon bulbs.
Have them checked by a CITROËN
dealer or a qualified workshop.
This system adjusts the height of the xenon
headlamp beams automatically and when
stationary, according to the load in the vehicle, so
as to avoid causing a nuisance to other road user.
If a malfunction occurs, this warning
lamp is displayed in the instrument
panel, accompanied by an audible
signal and a message in the screen.
Headlamp beam height adjustment
To avoid causing a nuisance to other road
users, the height of the halogen headlamp
beams should be adjusted according to the
load in the vehicle.
0.
1 o
r 2 people in the front seats.
-.
3 p
eople.
1.
5 p
eople.
-.
I
ntermediate setting.
2.
5 p
eople + maximum authorised load.
-.
I
ntermediate setting.
3.
D
river + maximum authorised load. The system then places your headlamps in the
lowest position.
Manual adjustment of
halogen headlamps
The initial setting is position "0".
Page 137 of 436
135
DS4_en_Chap05_visibilite_ed03-2015
Directional lighting
When the dipped or main beam headlamps
are on, this function, allows the light beams to
better follow the road.
The use of this function, coupled with the
xenon headlamps and the cornering lighting,
considerably improves the quality of your
lighting round bends.This function is inactive:
-
w
hen stationary or at low speeds,
-
w
hen reverse is engaged.
The system is activated by default.
with directional lighting
without directional lighting
Programming
The system is activated or
deactivated in the vehicle
configuration menu.
The state of the system stays in memory on
switching off the ignition.
Contact a CITROËN dealer or a qualified
workshop.
Operating fault
If a fault occurs, this warning lamp
flashes in the instrument panel,
accompanied by a message in the
screen.
Visibility
Page 141 of 436

139
DS4_en_Chap05_visibilite_ed03-2015
Windscreen and headlamp wash
Windscreen wash
F Pull the windscreen wiper stalk towards you. The windscreen wash then the
windscreen wipers operate for a fixed
period.
It operates only when the headlamps are off or
the vehicle is stationary.
Low screenwash / headlamp
wash fluid level
On vehicle fitted with headlamp washers, the
low level of this fluid is indicated by gauge in
the reservoir filler neck under the bonnet.
Checking and topping up this fluid can should
be done with the engine off.
The level of this fluid should be
checked regularly, particularly during
w i n t e r.
Refer to the "Checks - Screenwash / headlamp
wash level" section for the procedure on
checking the level.
Headlamp wash
Associated with the windscreen wash, the
headlamp washers operate with the vehicle
moving, when the dipped or main beam
headlamps are on .
To reduce the consumption of the fluid
by the headlamp washers, they operate
only with every seventh use of the
screenwash or every 25 miles (40 km)
during a given journey.
Visibility
Page 187 of 436

185
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
Page 190 of 436

DS4_en_Chap08_conduite_ed03-2015
Key left in the "Ignition on"
position
If the key has been left in the ignition switch
at position 2 (Ignition on), the ignition will
be switched off automatically after one hour.
To switch the ignition back on, turn the
key to position 1 (Stop) , then back to
position
2
(Ignition on) .
F Stop the vehicle.
F
W ith the engine running at idle, turn the key
to position 1 .
F
R
emove the key from the ignition switch.
F
T
o lock the steering column, turn the
steering until it locks.
Switching off the engine
To facilitate unlocking of the steering
column, it is recommended that the
wheels be returned to the straight ahead
position before switching off the engine.
When you leave the vehicle, keep the
key with you and lock the vehicle.
For more information, refer to the
"Practical information" section, under
"Energy economy mode".
Never switch off the ignition before the
vehicle is at a complete stop. With the
engine off, the braking and steering
assistance systems are also cut off:
risk of loss of control of the vehicle.
Energy economy mode
After switching off the engine (position 1- Stop
),
for a maximum of 30 minutes you can still use
functions such as the audio and telematic
system, the wipers, dipped beam headlamps,
courtesy lamps,
...
F
C
heck that the parking brake is correctly
applied, particularly on sloping ground.
Page 246 of 436

DS4_en_Chap09_info-pratiques_ed03-2015
Changing a bulb
The headlamps are fitted with
polycarbonate glass with a protective
coating:
F
d
o not clean them using a dr y
or abrasive cloth, nor with a
detergent or solvent product,
F
u
se a sponge and soapy water or a
pH neutral product,
F
w
hen using a high pressure
washer on persistent marks, do not
keep the lance directed towards
the lamps or their edges for too
long, so as not to damage their
protective coating and seals. Changing a bulb should only be done
after the headlamp has been switched
off for several minutes (risk of serious
burns).
F
D
o not touch the bulb directly with
your fingers, use a lint-free cloth.
It is imperative to use only anti-
ultraviolet (UV) type bulbs to avoid
damaging the headlamp.
Always replace a failed bulb with a
new bulb with the same type and
specification.Light-emitting diodes (LEd)
For the replacement of this type of
lamp, go to a CITROËN dealer or a
qualified workshop.
LED (light-emitting diode) replacement
kits are available from CITROËN
dealers.
Risk of electrocution
Xenon bulbs (D1S) must be replaced
by a CITROËN dealer or a qualified
workshop.
Page 247 of 436

245
DS4_en_Chap09_info-pratiques_ed03-2015
Bulbs with lugs, type H1, H7... take care
to position them correctly to ensure the
best lighting.
Model with directional xenon and
full-LEd h eadlamps
1. daytime running lamps / sidelamps
(LEds ).
2.
di
rectional main beam / dipped beam
headlamps (
d1S
).
3.
di
rection indicators (LE
ds
).
4.
di
rectional foglamps (LE
ds
).
Model with halogen headlamps
(t y p e 1)
1. direction indicators (H21 clear).
2. di
pped beam headlamps (H7).
3.
M
ain beam headlamps (H1).
4.
da
ytime running lamps / sidelamps
(P21/5W XL).
5.
di
rectional front foglamps (H11).
Front lamps
Model with halogen headlamp
and LEd light signature (type 2)*
1. direction indicators (LEds ).
2. da
ytime running lamps / sidelamps
(LE
ds
).
3.
di
pped beam headlamps (H7).
4.
M
ain beam headlamps (H7).
5.
di
rectional front foglamps (H11).
Bulbs with lugs, type H1, H7... take care
to position them correctly to ensure the
best lighting.
*
LED: light emitting diodes.
Practical information
Page 248 of 436

DS4_en_Chap09_info-pratiques_ed03-2015
Changing direction indicator
bulbs
Amber coloured bulbs, such as the
direction indicators, must be replaced
with bulbs of identical specifications
and colour.
Rapid flashing of the direction indicator
warning lamp (right or left) indicates the
failure of a bulb on that side.
Model with halogen (type 2) and xenon
headlamps
For the replacement of this type of LED lamp,
contact a CITROËN dealer or a qualified
workshop.
Model with halogen headlamps (t yp e 1)
F
T
urn the bulb holder a quarter of a turn and
extract it.
F
P
ull out the bulb and change it.
To reassemble, carry out these operations in
reverse order.
Access to bulbs
Depending on the engine and only on the left
hand side, you must first carry out the following
operations for access to the protective covers
on the bulbs.
F
R
emove the air deflector by unclipping
each of its three attachment points.
F
U
nclip the bonnet release cable at its
two
fixings.
F
M
ove the cable down.
After changing the failed bulb, remember to
put everything back in place (cable and air
deflector).