Citroen DS4 RHD 2015.5 1.G Owner's Manual
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289
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 
qualified workshop.Only use products recommended by 
CITROËN or products of equivalent 
quality and specification.
In order to optimise the operation of 
units as important as those in the 
braking system, CITROËN selects and 
offers very specific products.
After washing the vehicle, dampness, 
or in wintry conditions, ice can form 
on the brake discs and pads: braking 
efficiency may be reduced. Make light 
brake applications to dry and defrost 
the brakes.
Brake disc wear
For information on checking brake 
disc wear, contact a CITROËN dealer 
or a qualified workshop.
Manual parking brake
If a loss of effectiveness of this 
system is noticed, the parking brake 
must be checked, even between 
two
  services.
Brake pads
Brake wear depends on the style 
of driving, particularly in the case 
of vehicles used in town, over short 
distances. It may be necessary to have 
the condition of the brakes checked, 
even between vehicle services.
For more information on the electric parking 
brake, refer to the corresponding section.
Unless there is a leak in the circuit, a drop in 
the brake fluid level indicates that the brake 
pads are worn.
Checking this system must be done by a 
CITROËN dealer or a qualified workshop.
Checks  
Page 292 of 436
Once the AdBlue® tank is empty, 
a s
ystem required by regulations 
prevents starting of the engine.
If the SCR is faulty, the level of 
emissions from your vehicle will no 
longer meet the Euro 6 standard: your 
vehicle becomes polluting.
In the event of a confirmed fault 
with the SCR system, you must go 
to a CITROËN dealer or a qualified 
workshop as soon as possible: after a 
running distance of 650 miles  
(1 100 km), a system will be triggered 
automatically to prevent engine 
starting.
AdBlue® additive and SCR system
for BlueHDi Diesel engines
To assure respect for the environment and 
conformity with the new Euro 6 emissions 
standard, without adversely affecting the 
per formance or fuel consumption of Diesel 
engines, CITROËN has taken the decision to 
equip its vehicles with an effective system that 
associates SCR (Selective Catalytic Reduction) 
with a particle filter (FAP) for the treatment of 
exhaust gases.
Presentation of the SCR system
Using an additive called AdBlue® containing urea, a 
catalytic converter turns up to 85% of nitrous oxides 
(NOx) into nitrogen and water, which are harmless 
to health and the environment.
The AdBlue® additive is held in a special 
tank located under the boot at the rear of 
the vehicle. It has a capacity of 17 litres: this 
provides a driving range of about 12 500 miles 
(20 000 km), after which an alert is triggered 
warning you when the reserve remaining is 
enough for just 1 500 miles (2 400 km).
During each scheduled service of your vehicle 
by a CITROËN dealer or a qualified workshop, 
the AdBlue
® additive tank is refilled in order to 
allow normal operation of the SCR system.
If the estimated mileage between two services 
is greater than 12 500 miles (20 000 km), we 
recommend that you go to a CITROËN dealer 
or a qualified workshop to have the necessary 
top-up carried out. 
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The engine start prevention system 
required by regulations is activated 
automatically once the AdBlue
® tank 
is empty.
Range indicators
Once the AdBlue® tank is on reserve or after 
detection of a fault with the SCR emissions 
control system, when the ignition is switched 
on, an indicator displays an estimate of the 
distance that can be covered, the range, before 
engine starting is prevented.
In the event of simultaneous system fault and 
low AdBlue
® level, the shortest range figure is 
the one displayed.
In the event of the risk of non-starting related to a lack of AdBlue®
Range greater than 1 500 miles (2 400 km)
When the ignition is switched on, no 
information on range is displayed automatically 
in the instrument panel.
With the type 2 instrument panel, 
pressing this button temporarily 
displays the driving range.
Above 3 000 miles (5 000 km), the value is not 
specified.
Type 1 instrument panel
Remaining range between 350 and 1500 miles (600 and 2 400 km)
When switching on the ignition, the UREA 
warning lamp comes on, accompanied by an 
audible signal and the temporary display in 
the instrument panel of "NO START IN" and 
a distance, indicating the remaining range 
expressed in miles or kilometres before engine 
starting is prevented - (For example "NO 
START IN 900 miles" means that "Starting will 
be prevented in 900 miles).
When driving, this display appears every 
150
  miles (300 km) until the additive tank has 
been topped-up.
Go to a dealer CITROËN or a qualified 
workshop to have the AdBlue
® tank topped-up.
You can also top-up the tank yourself.
For more information on topping-up the 
AdBlue
® additive, refer to the corresponding 
section.
Checks  
Page 294 of 436
When switching on the ignition, the SERVICE 
warning lamp comes on and the UREA 
warning lamp flashes, accompanied by an 
audible signal and the temporary display in 
the instrument panel of "NO START IN" and 
a distance indicating the remaining range 
expressed in miles or kilometres before engine 
starting is prevented - (For example "NO 
START IN 180 miles" means "Starting will be 
prevented in 180 miles).
When driving, this display appears every 
30 seconds until the additive tank has been 
topped-up.
Go to a CITROËN dealer or a qualified 
workshop to have the AdBlue
® tank topped-up.
You can also top-up the tank yourself.
Other wise you will not be able to restart your engine.For more information on topping-up the 
AdBlue® additive, refer to the corresponding 
section.
Remaining range between 0 and 350 miles (0 and 600 km)
When switching on the ignition, the SERVICE 
warning lamp comes on and the UREA 
warning lamp flashes, accompanied by an 
audible signal and the temporary display in 
the instrument panel of "NO START IN" and 
0
  km or miles - ("NO START IN 0 miles" means 
"Starting prevented").
The AdBlue
® tank is empty: the system required 
by regulations prevents engine starting.
Breakdown related to a lack of AdBlue®  additive
To be able to start the engine, 
we recommend that you call on 
a CITROËN dealer or a qualified 
workshop for the top-up required. If 
you carry out the top-up yourself, it is 
essential to add at least 3.8 litres of 
AdBlue
® to the additive tank.
For more information on topping-up 
the AdBlue
® additive, refer to the 
corresponding section. 
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Type 2 instrument panel
When switching on the ignition, the 
UREA  warning lamp comes on, accompanied 
by an audible signal and the display of a 
message (e.g.: "Top up emissions additive: 
Starting prevented in 900 miles") indicating 
the remaining range expressed in miles or 
kilometres.
When driving, the message is displayed every 
200 miles (300 km) until the additive tank has 
been topped-up.
Go to a CITROËN dealer or a qualified 
workshop to have the AdBlue
® tank topped-up.
You can also top-up the tank yourself.
For more information on topping-up the 
AdBlue
® additive, refer to the corresponding 
section.
Remaining range between 350 and 1500 miles (600 and 2 400 km)
When switching on the ignition, the SERVICE 
warning lamp comes on and the UREA warning 
lamp flashes, accompanied by an audible 
signal and the display of a message (e.g. "Top 
up emissions additive: Starting prevented in 
350 miles") indicating the remaining range 
expressed in miles or kilometres.
When driving, the message is displayed every 
30 seconds until the additive tank has been 
topped-up.
Go to a CITROËN dealer or a qualified 
workshop to have the AdBlue
® tank topped-up.
You can also top-up the tank yourself.
Other wise you will not be able to restart your 
engine. When switching on the ignition, the SERVICE 
warning lamp comes on and the UREA warning 
lamp flashes, accompanied by an audible 
signal and the display of the message "Top up 
emissions additive: Starting prevented".
The AdBlue
® tank is empty: the system required 
by regulations prevents engine starting.
To be able to start the engine, 
we recommend that you call on 
a CITROËN dealer or a qualified 
workshop for the top-up required.
If you carry out the top-up yourself, it 
is essential to add at least 3.8 litres of 
AdBlue
® to the tank.
Remaining range between 0 and 350 miles (0 and 600 km)Breakdown related to a lack of AdBlue®  additive
For more information on topping-up the 
AdBlue® additive, refer to the corresponding 
section.
Checks  
Page 296 of 436
In the event of a fault with the the SCR emissions control system
A system that prevents engine starting is activated automatically from 650 miles (1 100 km) after confirmation of a fault with the SCR emissions 
control system. Have the system checked by a CITROËN dealer or a qualified workshop as soon as possible.
The UREA, SERVICE and diagnostic warning 
lamps comes on, accompanied by an audible 
signal and the display of the message 
"Emissions fault".
The alert is triggered when driving, when 
the fault is detected for the first time, then 
when switching on the ignition for subsequent 
journeys, while the fault persists. In the event of the detection of a fault
If it is a temporary fault, the alert 
disappears during the next journey, 
after a self diagnosis test of the SCR 
emissions control system.
If a fault with the SCR system is confirmed (after 
30 miles (50 km) covered with the permanent 
display of the message signalling a fault), the 
SERVICE and engine diagnostic warning lamps 
come on and the UREA warning lamp flashes, 
accompanied by an audible signal and the 
temporary display in the instrument panel of 
"NO START IN" and a distance, indicating the 
remaining range express in miles or kilometres 
before engine starting is prevented - (e.g.: 
"NO  START IN 350   miles" means "Starting will 
be prevented in 350 miles").
during an authorised driving phase (between 650 miles and 0 miles) (1 100 km and 0 km)
While driving, this display appears every 
30   seconds while the fault with the SCR system 
persists.
The alert is repeated when switching on the 
ignition.
You should go to a CITROËN dealer or a 
qualified workshop as soon as possible.
Other wise, you will not be able to restart your 
engine.
Type 1 instrument panel 
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295
Starting preventedYou have exceeded the authorised 
driving limit: the starting prevention 
system inhibits engine starting.
Every time the ignition is switched on, the 
SERVICE and engine diagnostic warning 
lamps come on and the UREA warning lamp 
flashes, accompanied by the temporary display 
of "NO START IN" and 0 miles or kilometres
  - 
("NO START IN 0 miles" means "Starting 
prevented").
To be able to start the engine, you must call on 
a CITROËN dealer or a qualified workshop.Type 2 instrument panel
A system that prevents engine 
starting is activated automatically 
from 650
  miles (1 100 km) after 
confirmation of a fault with the SCR 
emissions control system. Have the 
system checked by a CITROËN dealer 
or a qualified workshop as soon as 
possible.
In the event of a fault with the SCR emissions control system
The UREA, SERVICE and diagnostic warning 
lamps comes on, accompanied by an audible 
signal and the display of the message 
"Emissions fault".
The alert is triggered when driving when the 
fault is detected for the first time, then when 
switching on the ignition for subsequent 
journeys, while the fault persists. In the event of the detection of a fault
If it is a temporary fault, the alert 
disappears during the next journey, 
after self-diagnosis of the SCR system.
Checks  
Page 298 of 436
Freezing of the AdBlue® additive
The AdBlue
® additive freezes at 
temperatures below around -11°C.
The SCR system includes a heater 
for the AdBlue
® tank, allowing you to 
continue driving in very cold conditions.
If a fault with the SCR system is confirmed  
(after 30 miles (50 km) covered with the 
permanent display of the message signalling 
a fault), the SERVICE and engine diagnostic 
warning lamps come on and the UREA 
warning lamp flashes, accompanied by an 
audible signal and the display of a message 
(e.g.: "Emissions fault: Starting prevented in 
150
 
miles") indicating the remaining range 
express in miles or kilometres.
While driving, the message is displayed every 
30 seconds while the fault with the SCR system 
persists.
The alert is repeated when switching on the 
ignition.
You should go to a CITROËN dealer or a 
qualified workshop as soon as possible.
Other wise, you will not be able to restart your 
engine.
du
ring an authorised driving phase (between 
650 miles and 0 miles) (1 100 km and 0 km)Every time the ignition is switched on, the SERVICE 
and engine diagnostic warning lamps come on and 
the UREA warning lamp flashes, accompanied by 
an audible signal and the display of the message 
"Emissions fault: Starting prevented".
Starting prevented
You have exceeded the authorised 
driving limit: the starting prevention 
system inhibits engine starting.
To be able to start the engine, you must call on 
a CITROËN dealer or a qualified workshop. 
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297
Topping-up the AdBlue® additive
Precautions in use
Keep AdBlue® out of the reach of 
children, in its original bottle.
Never transfer AdBlue
® to another 
container: it would lose its purity. Never dilute the additive with water.
Never pour the additive into the Diesel 
fuel tank.
Never top-up from an AdBlue® 
dispenser reserved for heavy goods 
vehicles.
The AdBlue
® additive is an urea-based 
solution. This liquid is non-flammable, 
colourless and odourless (kept in a cool area).
In the event of contact with the skin, wash 
the affected area with soap and water. In the 
event of contact with the eyes, wash (irrigate) 
the eyes with large amounts of water or with 
an eye wash solution for at least 15 minutes. 
If a burning sensation or irritation persists, get 
medical attention.
If swallowed, immediately wash out the mouth 
with clean water and then drink plenty of water.
In certain conditions (high ambient 
temperature, for example), the risk of release 
of ammonia cannot be excluded: do not inhale 
the product. Ammonia vapour has en irritant 
effect on mucous membranes (eyes, nose and 
throat).
Filling the AdBlue
® tank is an operation 
included in every routine service on your 
vehicle by a CITROËN dealer or a qualified 
workshop.
Nevertheless, given the capacity of the tank, 
it may be necessary to top-up the additive 
between services, more particularly if an alert 
(warning lamps and a message) signals the 
requirement.
You can got to a CITROËN dealer or a qualified 
workshop.
If you envisage topping-up yourself, please 
read the following warnings carefully. Use only AdBlue
® additive that meets the 
ISO
 
22241 standard.
The supply in a non-drip bottle simplifies 
toping-up. You can obtain 1.89 litre (half a 
US
 
gallon) bottles from a CITROËN   dealer or a 
qualified workshop.
Checks  
Page 300 of 436
Never store bottles of AdBlue® in your 
vehicle.
Recommendations on storage
AdBlue® freezes at about -11°C and 
deteriorates above 25°C. It is recommended 
that bottles be stored in a cool area and 
protected from direct sunlight.
Under these conditions, the additive can be 
kept for at least a year.
If the additive has frozen, it can be used once it 
has completely thawed out. Before topping-up, ensure that the vehicle is 
parked on a flat and level sur face.
In wintry conditions, ensure that the 
temperature of the vehicle is above -11°C. 
Otherwise the AdBlue
® may be frozen and 
so cannot be poured into its tank. Park your 
vehicle in a warmer area for a few hours to 
allow the top-up to be carried out.
Procedure
F Switch off the ignition and remove the  key, or if your vehicle has one, press the 
START/STOP button to switch off the 
engine. F
 
R
 aise the boot floor for access to the 
AdBlue
® tank. S
ecure the boot floor by attaching its cord 
to the hook on the parcel shelf support.
F
 
U
nclip the black plastic blanking plug using 
its tab.
F
 
I
nsert your fingers into the aperture and 
turn the blue cap a 6
th of a turn anti-
clockwise.
F
 
C
arefully lift off the cap, without dropping it.