catalytic converter CITROEN DS7 CROSSBACK 2022 Owners Manual

14
Dashboard instruments01
Engine self-diagnostic systemFlashing.
The engine management system has a
fault.
There is a risk that the catalytic converter will be
destroyed.
You must carry out (2).
Fixed.
The emissions control system has a fault.
The warning lamp should go off when the engine
is started.
Carry out (3) without delay.
Dynamic stability control (DSC)/Anti-slip
regulation (ASR)
Fixed.
The system is deactivated.
The DSC/ASR system is reactivated automatically
when the vehicle is started, and at speeds above
approximately 31 mph (50 km/h).
At speeds below 31 mph (50 km/h), it can be
reactivated manually.
Flashing.
DSC/ASR system regulation is activated in
the event of a loss of grip or trajectory.
Fixed.
The DSC/ASR system has a fault.
Carry out (3).
Emergency brake malfunction (with electric
parking brake)
Fixed, accompanied by the
message "Parking brake fault".
Emergency braking does not deliver optimal
performance.
If automatic release is not available, use manual
release or carry out (3).
Hill start assistFixed, accompanied by the
message "Anti roll-back system
fault".
The system has a fault.
Carry out (3).
Under-inflationFixed.
The pressure in one or more tyres is too
low.
Check the pressure of the tyres as soon as
possible.
Reinitialise the detection system after adjusting
the pressure.
Under-inflation warning lamp
flashing then fixed and Service
warning lamp fixed.
The tyre pressure monitoring system is faulty.
Under-inflation detection is no longer monitored.
Check the tyre pressures as soon as possible and
carry out (3).
Parking sensorsFixed, accompanied by an onscreen
message and an audible signal.
The system is deactivated.
Fixed, associated with the Service
warning lamp, accompanied by the
display of a message and an audible signal.
The system has a fault.
Carry out (3).
Engine preheating (Diesel)Temporarily on
(up to approximately 30 seconds in severe
weather conditions).
When switching on the ignition, if the weather
conditions and the engine temperature make it
necessary.
Wait until the warning lamp goes off before
starting.
When the warning lamp goes off, starting will
occur immediately if you press and hold the brake
pedal.
If the engine does not start, make the engine
starting request again, while keeping your foot on
the pedal.
AirbagsFixed, associated with the Service
warning lamp and accompanied by
the display of a message.
One of the airbags or seat belt pyrotechnic
pretensioners is faulty.
Carry out (3).

98Driving06
Move the electronic key so that the engine can
be started or switched off.
If there is still a problem, refer to the "Key not
detected - Back-up starting or Back-up switch-
off" section.
Illuminated animations of the "START/
STOP" button indicate the presence or
absence of the electronic key in the passenger
compartment.
Starting
►  Select mode P or N on the automatic gearbox,
then depress the brake pedal.


►  Press the "START/STOP" button while
maintaining pressure on the pedal until the engine
starts.
Diesel engines
In negative temperatures and/or when the
engine is cold, starting takes place only after the
preheating warning lamp goes out.
If this warning lamp comes on after
pressing the "START/STOP" button:
►  Keep the pedal fully depressed and do not
press the "START/STOP" button again until the
engine is running.
In all circumstances, if one of the starting
conditions is not met, a message is displayed.
In some circumstances, a message indicates
that it is necessary to turn the steering wheel
while pressing the "START/STOP" button to assist
unlocking of the steering column.
Petrol engines
With Petrol engines, after a cold start,
pre-heating the catalytic converter can cause
noticeable engine vibrations, for anything up
to 2 minutes (accelerated idle speed).
Starting rechargeable hybrid
vehicles
►  Fully depress the brake pedal and press the
START/STOP button for approximately 2 seconds.
►  Keep your foot on the pedal until this
indicator lamp comes on, indicating the
activation of the rechargeable hybrid system
(confirmed by an audible signal).
To exit Park mode, wait for the READY
indicator lamp to come on.
By default, the system starts in Electric mode.
Depending on certain parameters (battery
charge level or outside temperature), the system
determines whether it is necessary to start the
petrol engine.
It is possible to change the driving mode at any
time using the mode selector.
When the vehicle starts in electric mode,
it makes no noise.
Pay particular attention to pedestrians and
cyclists who may not hear the vehicle coming
despite the pedestrian horn.
Switching off
►  Immobilise the vehicle using the parking
brake.
►  Select mode P on the automatic gearbox.
►  Press the "START/STOP" button.
►  For rechargeable hybrid vehicles, before
leaving the vehicle, check that the READY
indicator lamp is switched off.
In some circumstances, it is necessary to turn the
steering wheel to lock the steering column.
On certain versions with an automatic gearbox
(EAT8), the steering column does not lock, but the
gearbox locks in mode P.
If the vehicle is not immobilised, the
engine will not stop.
With the engine off, the braking and
steering assistance systems are also cut
off - risk of loss of control of the vehicle!
Never leave your vehicle with the
electronic key still inside.

144
Practical information07
► To open the filler flap, press the flap opening
button for more than 2 seconds or, with the
vehicle unlocked, press the rear of the filler flap
(depending on version).
Rechargeable hybrid vehicles
After pressing the button on the
dashboard, the filler flap may not open for
several minutes. A sound is emitted when the
filler flap opens.
If the flap becomes stuck, press and hold
the button on the dashboard for more than
3 seconds.


The filler cap is built into the flap.
►  Select a pump that delivers the correct fuel
type for the vehicle's engine (see a reminder label
on the inside of the filler flap).


►  Insert the filler nozzle and push it in as far as
possible before starting to refuel (to minimise the
risk of splashing).
►  Fill the tank.
Do not continue after the nozzle’s third cut-out.
Doing so may cause malfunctions.
►  Push the fuel filler flap to close it.
The vehicle is fitted with a catalytic converter,
which helps to reduce the level of harmful
emissions in the exhaust gases.
For petrol engines, you must use unleaded fuel.
The filler neck is narrower, allowing only unleaded
petrol nozzles to be inserted.
If you have put in the wrong fuel for the
vehicle, you must have the fuel tank
drained and filled with the correct fuel before
starting the engine.
Misfuel prevention (Diesel)
(Depending on country of sale.)
This mechanical device prevents filling the tank of
a Diesel vehicle with petrol.
Located in the filler neck, the misfuel prevention
device is visible when the filler cap is removed.
Operation

When a petrol filler nozzle is introduced into the
fuel filler neck of a Diesel vehicle, it comes into
contact with the flap. The system remains closed
and prevents filling.
Do not persist but introduce a Diesel type filler
nozzle.
The misfuel prevention device does not
prevent filling with a jerrycan, regardless
of the fuel type.
Travelling abroad
As Diesel fuel pump nozzles may be
different in other countries, the presence
of the misfuel prevention device may make
refuelling impossible.

165
Practical information07
the shock absorbers have a major impact on road
holding and braking performance.
For your safety and driving comfort, it is important
to have them regularly checked by a dealer or a
qualified workshop.
Timing and accessory kits
The timing and accessory kits are used
from the time the engine is started until it
is switched off. It is normal for them to wear over
time.
A faulty timing or accessory kit can damage
the engine, rendering it unusable. Observe the
recommended replacement frequency, stated in
distance travelled or time elapsed, whichever is
reached first.
AdBlue® (BlueHDi)
To respect the environment and ensure
compliance with the Euro 6 standard, without
adversely affecting the performance or
fuel consumption of its Diesel engines, the
Manufacturer has taken the decision to equip
its vehicles with a system that combines SCR
(Selective Catalytic Reduction) with a Diesel
Particle Filter (DPF) for the treatment of exhaust
gases.
SCR system
Using a liquid called AdBlue® that contains
urea, a catalytic converter turns up to 85% of
the nitrogen oxides (NOx) into nitrogen and
water, which are harmless to health and the
environment.
The AdBlue® is contained in a special tank
holding about 17 litres.
Its capacity allows a driving range of
approximately 3,900 miles (6,500 km), which may
vary considerably depending on your driving style.
An alert system is triggered once the reserve level
is reached: it is then possible to drive for a further
1,500 miles (2,400 km) before the tank is empty
and the vehicle is immobilised.
For more information on the Warning and
indicator lamps and the associated alerts,
or the Indicators, please refer to the
corresponding sections.
Once the AdBlue® tank is empty, a device
required by law prevents the engine from
being restarted.
If the SCR system is faulty, the level of
emissions from the vehicle will no longer meet
the Euro 6 standard and the vehicle starts
polluting the environment.
In the event of a confirmed SCR system
malfunction, it is essential to visit a dealer or a
qualified workshop. After 660 miles (1,100 km),
a device is automatically activated to prevent
the engine from starting.
In both cases, a range indicator indicates
the distance that can be travelled before the
vehicle is stopped.
Freezing of the AdBlue®
AdBlue® 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.
Supply of AdBlue®
It is recommended that the AdBlue® be topped up
as soon as the first alert is issued indicating that
the reserve level has been reached.
For the correct operation of the SCR
system:
–

U

se only AdBlue
® fluid that meets the ISO
22241 standard.
–

Ne

ver transfer AdBlue
® to another container
as it would lose its purity.
–

Ne

ver dilute AdBlue
® with water.
You can obtain AdBlue
® from a dealer or a
qualified workshop, as well as service stations
equipped with AdBlue
® pumps specially designed
for passenger vehicles.
Recommendations on storage
AdBlue® freezes at about -11°C and deteriorates
above +25°C. Containers should be stored in a
cool area and protected from direct sunlight.
Under these conditions, the fluid can be kept for
at least a year.
If the fluid has frozen, it can be used once it has
completely thawed out at room temperature.