stop start Citroen DS4 RHD 2015.5 1.G Owner's Guide
Page 169 of 436
167
Emergency braking assistance
System which, in an emergency, enables you 
to obtain the optimum braking pressure more 
quickly, thus reducing the stopping distance.
Activation
It is triggered by the speed at which the brake 
pedal is pressed.
The effect of this is a reduction in the 
resistance of the pedal and an increase in 
braking efficiency.When braking in an emergency, press 
firmly without releasing the pressure.
Trajectory control systems
Anti-slip regulation (ASR) 
and dynamic stability 
control (
d
 SC)
The anti-slip regulation (also known as traction 
control) optimises traction to prevent skidding 
of the wheels, by acting on the brakes of the 
driving wheels and on the engine.
The electronic stability control 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.
Activation
These systems are activated automatically 
each time the vehicle is started.
They come into operation in the event of a grip 
or trajectory problem.
This is indicated by flashing of this 
warning lamp in the instrument panel.
Intelligent traction control 
system ("Snow motion")
Depending on version, your vehicle has a 
system to help driving on snow: intelligent 
traction control .
This system detects situations of difficult 
sur face adhesion 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 slip 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.
Safety  
Page 184 of 436
Driving recommendations
Observe the driving regulations and remain vigilant whatever the traffic conditions.
Pay close attention to the traffic and keep your hands on the wheel so that you are ready to react at 
any time to any eventuality.
On a long journey, a break every two hours is strongly recommended.
In difficult weather, drive smoothly, anticipate the need to brake and increase the distance from 
other vehicles.Never drive with the parking brake 
applied - Risk of overheating and 
damage to the braking system!
Do not park or run the engine when 
stationary in areas where inflammable 
substances and materials (dry grass, 
dead leaves...) might come into contact 
with the hot exhaust system - Risk of 
fire!
Never leave a vehicle unsupervised 
with the engine running. If you have 
to leave your vehicle with the engine 
running, apply the parking brake 
and put the gearbox into neutral or 
position
 
n  or P, depending on the type 
of gearbox.
driving on flooded roads
We strongly advise against driving on flooded 
roads, as this could cause serious damage 
to the engine or gearbox, as well as to the 
electrical systems of your vehicle.
Important!
- check that the depth of water does not  exceed 15 cm, taking account of waves 
that might be generated by other users,
-
 
d
 eactivate the Stop & Start system,
-
 
d
 rive as slowly as possible without 
stalling. In all cases, do not exceed 6 mph 
(10
  km/h),
-
 
d
 o not stop and do not switch off the 
engine.
If you are obliged to drive through water:
On leaving the flooded road, as soon as 
circumstances allow, make several light brake 
applications to dry the brake discs and pads.
If in doubt on the state of your vehicle, contact 
a CITROËN dealer or a qualified workshop. 
Page 186 of 436
Avoid attaching heavy objects to the 
key or the remote control, which would 
weigh down on its blade in the ignition 
switch and could cause a malfunction.
It could adversely affect the 
deployment of the front airbag.
Starting / Switching off the engine with the key
It has 3 positions:
- p osition 1 (Stop) : insert and removing the 
key,
-
 
p
 osition 2 (Ignition on) : steering column 
unlocked, ignition on, Diesel preheating, 
engine running,
-
 
p
 osition 3 (Starting) .
Ignition switch
Ignition on position
It allows the use of the vehicle's electric 
equipment or portable devices to be charged.
Once the state of charge of the battery drops 
to the reserve level, the system switches to 
energy economy mode: the power supply is 
cut off automatically to preserve the remaining 
battery charge.
Switching off the engine leads to a loss 
of braking assistance.
Anti-theft protection
Electronic engine immobiliser
In the event of a fault, you are 
informed by illumination of this 
warning lamp, an audible signal 
and/or the display of a message, 
depending on version.
Keep safely, away from your vehicle, 
the label attached to the keys given to 
you on acquisition of the vehicle.
In this case, your vehicle will not start; contact 
a CITROËN dealer as soon as possible. The keys contain an electronic chip which has 
a special code. When the ignition is switched 
on, this code must be recognised for engine 
starting to be authorised.
This electronic engine immobiliser locks the 
engine management system a few minutes 
after the ignition is switched off and prevents 
starting of the engine by anyone who does not 
have the key. 
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187
Starting / Switching off the engine with Keyless Entry and 
Starting
Starting the engine
F Place the gear selector lever P or n  with 
an automatic gearbox, or neutral with a 
manual gearbox.
F
 
W
 ith the electronic key inside the vehicle, 
press the brake pedal for vehicles with an 
automatic gearbox, or fully declutch for 
vehicles with a manual gearbox. F
 
B
 riefly press the "
S TA R T/
STOP " button while maintaining 
pressure on the pedal until the 
engine starts. If the electronic key is not detected 
in the zone, a message is displayed. 
Move the electronic key into the zone 
so that the engine can be started.
If one of the starting conditions is not 
met, a reminder message appears in 
the instrument panel screen. In some 
circumstances, it is necessary to 
turn the steering wheel slightly while 
pressing the " START/STOP " button 
to assist unlocking of the steering; 
a message warns you when this is 
needed.
The presence of the "Keyless Entry 
and Starting" electronic key in the 
recognition zone is essential.
As a safety measure, do not leave this 
zone with the vehicle running.
diesel vehicles
In temperatures below zero 
the engine will not start until 
the preheater warning lamp 
has gone off.
If this warning lamp comes on after 
pressing " START/STOP ", you should 
hold the brake or clutch pedal down 
until the warning lamp goes off and do 
not press the " START/STOP" button 
again.
The steering column unlocks and the engine 
starts more or less instantly.
See the advice below for Diesel versions.
It is not necessary to place the electronic key in 
the reader.
driving  
Page 190 of 436
Switching off the engine
If the vehicle is not immobilised, the 
engine will not stop.
Do not leave your vehicle with the 
electronic key still inside.
Switching off the engine leads to a loss 
of braking assistance.
F
 
I
mmobilise the vehicle.
F
 
P
lace the gear selector at P or  n  with 
an automatic gearbox, or neutral with a 
manual gearbox.
F 
W
 ith the electronic key inside 
the vehicle, press the " S TA R T/
STOP " button.
The engine stops and the steering 
column locks.
Emergency starting
When the electronic key is in the recognition 
zone and, after pressing the " START/STOP" 
button, the engine does not start:
F
 
P
 lace the gear selector at P or  n  for 
vehicles with an automatic gearbox or 
neutral for vehicles with a manual gearbox. F
 P lace the electronic key in the back-up 
reader.
 (
see the "Access - Back-up key" section).
F
 
P
 ress the brake pedal on vehicles with an 
automatic gearbox, or fully declutch with a 
manual gearbox.
F
 
P
 ress the "START/STOP " 
button.
 T
he engine starts. 
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189
Emergency switch-off
In the event of an emergency only, 
the engine can be switched of without 
conditions. To do this, press and hold 
the "START/STOP " button for about 
3 seconds.
In this case the steering column locks as soon 
as the vehicle stops.
Electronic key not 
recognised
If the electronic key is no longer in the 
recognition zone when driving or when you 
(later) request switching off the engine, 
a
  message is displayed. F
 
P
 ress and hold the " S TA R T/
STOP " button for about 
3
  seconds if you want to force 
switching off the engine ( note 
that restar ting will not be 
possible without the key ).
Ignition on position
(without starting)
With the Keyless Entry and Starting key inside 
the vehicle, pressing the "START/STOP" 
button, with no action on the pedals , allows 
the ignition to be switched on.
F
 P
ress the "START/STOP"  button, 
the instrument panel comes on 
but the engine does not start.
F
 
P
 ress the button again to switch off the 
ignition and so allow the vehicle to be 
locked.
With the ignition on, the system 
automatically goes into energy 
economy mode when required to 
maintain the state of charge of the 
battery.
driving  
Page 195 of 436
193
With the engine running and the vehicle 
stationary, in order to immobilise the vehicle 
it is essential to manually apply the parking 
brake by pulling  control lever A.
Immobilising the vehicle, 
engine running
The emergency braking must only be 
used in exceptional circumstances.
Before leaving the vehicle, ensure 
that parking brake warning lamp in the 
instrument panel is on fixed, not flashing.
The application of the parking brake is 
confirmed by:
-
 
i
llumination of the braking 
warning lamp and the P warning 
lamp in the control lever A ,
-
 
d
isplay of the message "Parking 
brake on".
When the driver’s door is opened, a message is 
displayed accompanied by an audible signal, if 
the parking brake has not been applied, except 
in the case of an automatic gearbox with the 
gear selector in position P .
Particular situations
In certain situations (e.g. starting the engine), 
the parking brake can automatically alter its 
force. This is normal operation.
To advance your vehicle a few centimetres 
without starting the engine, but with the ignition 
on, press on the brake pedal and release the 
parking brake by pulling then releasing the 
control lever A . The full release of the parking 
brake is confirmed by the warning lamps in 
the control lever A and in the instrument panel 
going off and display of the message "Parking 
brake off ".
Emergency braking
In the event of failure of the electronic 
stability control system, signalled by 
the illumination of this warning lamp, 
braking stability is then not guaranteed.
In the event of a failure of the main service 
brake or in an exceptional situation (e.g. driver 
taken ill, under instruction, etc) a continuous 
pull on the control lever A will stop the vehicle.
The electronic stability control provides stability 
during emergency braking.
If the emergency braking malfunctions, 
the message "Parking brake faulty" will be 
displayed.
In this event, stability must be assured by the 
driver by repeating alternate "pull-release" 
actions on the control lever A
.
driving  
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203
Gear efficiency indicator*
On vehicle fitted with a manual 
gearbox, the arrow may be 
accompanied by the gear 
recommended.
With an automatic gearbox, the system 
is only active in manual mode.
* Depending on engine.
On BlueHDi Diesel 150 versions with manual 
gearbox, the system may suggest changing into 
neutral so that the engine can go into standby 
(STOP mode with Stop & Start), in certain 
driving conditions. In this case, 
n
 is displayed 
in the instrument panel. System which reduces fuel consumption by recommending the most appropriate gear.
Operation
Depending on the driving situation and your 
vehicle's equipment, the system may advise 
you to skip one (or more) gear(s). You can 
follow this instruction without engaging the 
intermediate gears.
The gear engagement recommendations must 
not be considered compulsory. In fact, the 
configuration of the road, the amount of traffic 
and safety remain determining factors when 
choosing the best gear. Therefore, the driver 
remains responsible for deciding whether or not 
to follow the advice given by the system.
This function cannot be deactivated. Example:
-
 
Y
 ou are in third gear.
-
 
Y
 ou press the accelerator pedal.
-
 
T
 he system may suggest that you engage 
a higher gear.
The information appears in the instrument 
panel in the form of an arrow.
The system adapts its gear change 
recommendation according to the 
driving conditions (slope, load,
  ...) and 
the demands of the driver (power, 
acceleration, braking,
  ...).
The system never suggests:
-
 
e
 ngaging first gear,
-
 enga
ging reverse gear.
driving  
Page 208 of 436
Stop & StartThe Stop & Start system puts the engine temporarily into standby - STOP mode - during stops in the traffic (red lights, traffic jams, or other...). 
T he   engine restarts automatically - START mode - as soon as you want to move off. The restart takes place instantly, quickly and silently.
Per fect for urban use, the Stop & Start system reduces fuel consumption and exhaust emissions as well as the noise level when stationary.
Operation
going into engine STOP  
mode
STOP mode does not affect the 
functionality of the vehicle, such as 
braking, power steering, for example.
Never refuel with the engine in STOP 
mode; you must switch off the ignition 
with the key or the "START/STOP" 
button.
The "ECO"  warning lamp comes on in 
the instrument panel and the engine 
goes into standby automatically:
- with a manual gearbox, at speeds below  12 mph (20 km/h), or vehicle stationary with 
PureTech 130 petrol and BlueHDi 115 and 
120 Diesel versions, when you put the gear 
lever into neutral and release the clutch 
pedal,
-
 
w
 ith an automatic gearbox, vehicle 
stationary, when you press the brake pedal 
or place the gear selector in position 
n
.
If your vehicle is fitted with the 
system, a time counter calculates 
the sum of the periods in STOP 
mode during a journey. It resets 
itself to zero every time the 
ignition is switched on with the key 
or the "START/STOP" button.
STOP mode is not invoked when:
- t he vehicle is on a steep slope (up or down),
-
 
t
 he driver's door is open,
-
 
t
 he driver's seat belt is not fastened,
-
 
t
 he vehicle has not exceeded 6 mph (10 km/h) 
since the last engine start (using the key or the 
"START/STOP" button),
-
 
t
 he electric parking brake is applied or being 
applied,
-
 
t
 he engine is needed to maintain a comfortable 
temperature in the passenger compartment,
-
 
d
 emisting is active,
-
 
s
 ome special conditions (battery charge, 
engine temperature, braking assistance, 
ambient temperature...) where the engine is 
needed to assure control of a system.
Special cases: STOP mode 
unavailable
In this case, the "ECO"  warning lamp 
flashes for a few seconds, then goes 
of f.
This operation is perfectly normal. 
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207
going into engine START  
mode
The "ECO" warning lamp goes off 
and the engine starts automatically:
-
 
w
ith a manual gearbox , when you fully 
depress the clutch pedal,
-
 
w
ith an automatic gearbox:
●
 
g
ear selector in position  d  or M, when 
you release the brake pedal,
●
 
o
r gear selector in position  n  and brake 
pedal released, when you place the gear 
selector in position 
d  or M,
●
 
o
r when you engage reverse gear.
Special cases: START invoked 
automatically
With a manual gearbox in STOP mode, 
if a gear is engaged without fully 
depressing the clutch pedal, a warning 
lamp comes on or an alert message 
is displayed asking you to depress the 
clutch pedal to restart the engine.
In this case the "ECO"  warning lamp 
flashes for few seconds, then goes 
of f.
This operation is perfectly normal. For safety reasons or to ensure smooth 
operation, START mode is invoked 
automatically when:
-
 
y
ou open the driver's door,
-
 
y
ou unfasten the driver's seat belt,
-
 
t
he speed of the vehicle exceeds 15 mph 
(25 km/h) with a manual gearbox (3 km/h 
(2 mph) with PureTech 130 petrol and 
BlueHDi Diesel 115 and 120 versions) or 
2
 
mph (3 km/h) with an automatic gearbox,
-
 
t
he electric parking brake is being applied,
-
 
s
ome special conditions (battery charge, 
engine temperature, braking assistance, 
ambient temperature...) where the engine is 
needed to assure control of a system.
driving