Instrument CITROEN RELAY 2015 Handbook (in English)

93
4
TECHNOLOGY on BOARD
Loading assistance
PNEUMATIC SUSPENSION
If your vehicle is fitted with pneumatic
suspension, you can adjust the height of
the rear of the vehicle to make loading and
unloading easier.
The control panel is located on the
dashboard.
There is a nominal level as well as 6 height
adjustment levels, raising (from +1 to +3) or
lowering (from -1 to -3). Each level reached
is indicated on the instrument panel screen.
Manual adjustment of the loading height
Raise: upwards adjustment of the load
floor Make a quick press on the control
to select the next level up. Each
press (LED on) raises the floor by
one level: +1 to +3.
A long press selects the highest level (+3). Lower: downwards adjustment of
the load floor
Make a quick press on the control
to select the next level down.
Each press (LED on) lowers the
floor by one level: -1 to -3.
A long press selects the lowest level (-3).

95
5
Driving safely
SAFETY
PARKING BRAKE HAZARD WARNING LAMPS
Press this button, the direction indicators
flash.
They can operate with the ignition off.
The hazard warning lamps should only be
used in dangerous situations, when stopping
in an emergency or when driving in unusual
conditions. Applying
Pull the parking brake lever up to immobilise
your vehicle.
Check that the parking brake is applied
firmly before leaving the vehicle. Pull on the parking brake lever,
only
with the vehicle stationary .
Releasing
Pull the lever and press the button to lower
the parking brake lever. In the exceptional case of use of the
parking brake when the vehicle is
moving, apply the brake by pulling gently
to avoid locking the rear wheels (risk of
skidding).
If the parking brake is still on or has not
been released properly, this is indicated
by this warning lamp which comes on on
the instrument panel.
When parking on a slope, direct your wheels towards
the pavement and pull the parking brake lever up.
There is no advantage in engaging a gear after
parking the vehicle, particularly if the vehicle is loaded.

97
5
Driving safely
SAFETY
Good practice
The ABS system does not provide shorter
braking distances. On very slippery surfaces
(black ice, oil...) the ABS can extend braking
distances. For emergency braking, press the
brake pedal hard and do not release it, even
on a slipper surface; you will then be able to
steer the vehicle and avoid an obstacle.
When replacing wheels (tyres and
rims), ensure that they conform to the
manufacturer's recommendations. Emergency braking assistance
System which, in an emergency, enables
you to obtain the optimum braking pressure
more quickly, thus reducing the stopping
distance.
Operation
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.
Switching off
This system cannot be deactivated by
the driver.
Operating fault
If this warning lamp comes on,
accompanied by an audible signal
and a message in the instrument
panel screen, it indicates a fault with
the anti-lock braking system which could result in
loss of control of the vehicle when braking.
For maximum braking efficiency, a
bedding-in period of around 300 miles
(500 kilometres) is needed. During this
period it is recommended that you avoid
harsh, repeated or prolonged braking. If this warning lamp comes on,
together with the
ABS warning
lamp, accompanied by a message
in the instrument panel screen,
it indicates a fault with the electronic brake
force distribution which could result in loss
of control of the vehicle when braking.
You must stop as soon as it is safe to do so.
In either case, contact a CITROËN dealer or
a qualified workshop. When braking in an emergency, press
firmly without releasing the pressure.

98
Driving safely
TRAJECTORY CONTROL SYSTEMS
Switching off
This system cannot be deactivated by
the driver.
Dynamic stability control (DSC)
The electronic stability programme 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.
With the DSC system, maintain course
without trying to countersteer.
Operation
The DSC system is activated automatically
each time the vehicle is started. Operating fault
Illumination of this warning lamp,
accompanied by an audible signal
and confirmed by a message
in the instrument panel screen,
indicates a fault with the DSC system.
Have it checked by a CITROËN dealer or a
qualified workshop. Operation
This system is activated automatically every
time the vehicle is started.
In the event of a problem of adhesion or
trajectory, this system comes into play.
Switching off
In exceptional conditions (starting a vehicle
which is bogged down, stuck in snow,
on soft ground...), it may be advisable to
deactivate the ASR system, so that the
wheels can spin freely and regain grip.
- Press this button, located in the
middle of the dashboard, to deactivate
the system.
Anti-slip regulation (ASR)
Anti-slip regulation (also known as traction
control) optimises traction, avoiding wheel
spin by acting on the brakes of the driving
wheels and the engine.
If the button's warning lamp comes
on, accompanied by a message in the
instrument panel screen, this indicates that
the ASR system is deactivated.
It comes into operation in the
event of a grip or trajectory
problem.
This is indicated by flashing of this warning
lamp in the instrument panel.

99
5
Driving safely
SAFETY
Reactivation
The ASR system is reactivated automatically
every time the ignition is switched back on.
- Press this button again to reactivate it manually.
Operating fault If this warning lamp comes on,
accompanied by an audible signal
and a message in the instrument
panel screen, this indicates a fault
with the ASR system.
Have it checked by a CITROËN dealer or a
qualified workshop.
Good practice
The DSC and ASR systems offer exceptional
safety in normal driving, but this should not
encourage the driver to take extra risks or
drive at high speed.
The correct operation of these systems
depend on observation of the manufacturer's
recommendations regarding the wheels
(tyres and rims), the braking components,
the electronic components and assembly
and repair procedures.
After an impact, have these systems
checked by a CITROËN dealer or a qualified
workshop.
Intelligent Traction Control
System to improve traction on slippery
surfaces (snow, black ice, mud...)
This system checks for situations of difficult
surface adhesion that could make it difficult
to move off or make progress.
In these situations, Intelligent Traction
Control takes over from the ASR system,
by transferring drive to the wheel with the
best grip on the ground to provide the best
traction and trajectory control.
Load inertia control
The true total weight of a commercial vehicle
can vary considerably depending on the load
carried. As a result, the centre of gravity of
the vehicle can move, both longitudinally
and in height.
All such variations have an effect on braking,
traction, the behaviour of the vehicle when
cornering and the tendency to overturn.
Load inertia control estimates the true
total weight of the vehicle by analysing its
behaviour under acceleration and braking.
This system then adapts the operation of
the DSC and ASR systems according to the
weight distribution in the vehicle. In critical
situations, your vehicle than remains more
securely on its intended trajectory.

101
5
Driving safely
SAFETY
LANE DEPARTURE WARNING SYSTEM
System which detects the involuntary
crossing of longitudinal traffic lane markings
on the ground (continuous or discontinuous
line).
A camera, fitted at the top centre of the
windscreen, monitors the road and triggers
a warning if the vehicle drifts (speed higher
than 35 mph (60 km/h)).
This system operates to its full potential
above all when used on motorways and
main roads.
Switching off
- Press this button to switch off the system, the indicator lamp in the button
comes on.
The status of the system remains in the
memory when the ignition is switched off.
Switching on
- Press this button to switch the system on, the indicator lamp in the button goes
off.
Detection
If a change of direction is detected, you are
alerted by a warning lamp in the instrument
panel and an audible signal:
Operating fault
If a fault occurs with the system,
this warning lamp comes on,
accompanied by an audible
message and confirmed by a
message in the screen.
Have the system checked by a CITROËN
dealer or a qualified workshop.
The lane departure warning system
cannot, in any circumstances, replace
the need for vigilance and responsibility on
the part of the driver. - fl ashing of the left hand warning
lamp, if drifting to 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 (arrow) or non-standard marking (graffi ti)
is crossed.
The detection may be disrupted:
- if the markings on the ground are worn,
- if there is little contrast between the markings on the ground and the road surface. - fl ashing of the right hand warning
lamp, if drifting to the right.

122
Under the bonnet
On the inside
This operation must only be carried out with the
vehicle stationary and the driver's door open.
Pull the release lever on the side of the
dashboard towards you.
On the outside
Push the safety catch lever located above
the grille to the right and raise the bonnet. Before closing the bonnet, put the stay back
in its housing.
Lower the bonnet and release it at the end of
its travel. Check that the bonnet has latched.
OPENING THE BONNET
Do not open the bonnet in strong
winds.
When the engine is hot, handle the safety
catch and stay with care (risk of burns). If the bonnet is not closed
correctly, this warning lamp
comes on in the instrument panel.
Before doing anything under the
bonnet, switch off the ignition with the
key to avoid any risk of injury resulting from
an automatic change to START mode.
CLOSING THE BONNET
Bonnet stay
Unclip the stay and tilt it to insert it in the
first notch, then the second.
Because of the presence of electrical
equipment under the bonnet, it is
recommended that exposure to water
(rain, washing, ...) be limited.

124
Levels and checks
Used products
Avoid prolonged contact of used oil or fluids
with the skin.
Most of these fluids are harmful to health or
indeed very corrosive.
Do not discard used oil or fluids into sewers
or onto the ground.
Take used oil to a CITROËN dealer or
a qualified workshop (France) or to an
authorised waste disposal site.
LEVELS
These regular maintenance operations
will keep your vehicle in good running
order. Ask for advice at a CITROËN dealer
or consult the maintenance and warranty
guide contained in the handbook pack.
To maintain the reliability of engines and
emission control systems, the use of
additives in engine oil is prohibited.
Changing the brake fluid
The brake fluid must be changed at
the intervals stated, according to the
manufacturer's servicing schedule.
Use fluids recommended by the
manufacturer, which fulfil DOT4 standards.
The level must be between the MIN and
MAX marks on the reservoir.
If fluid has to be added frequently, this
indicates a failure which must be checked by
a CITROËN dealer or a qualified workshop
as soon as possible.
If you have to remove/refit the
engine styling cover, handle it
with care to avoid damaging the
fixing clips. Dipstick
There are two marks on
the dipstick:
Oil change
It is imperative that this is carried out at the
intervals specified in the manufacturer's
servicing schedule. Ask for advice at at
CITROËN dealer.
Remove the dipstick before filling.
Check the level after filling (never exceed
the maximum mark).
Screw the cap back onto the sump before
closing the bonnet.
Viscosity selection
When topping-up, the oil selected must meet
the manufacturer's requirements.
Warning lamps
Checking by means of the warning
lamps on the instrument panel is
described in the "Ready to go -
Instruments and controls" section.
A
= maximum
If you fill past this mark,
contact a CITROËN dealer
or a qualified workshop.
B = minimum
Never allow the level to fall
below this mark.
Oil level
Check the level regularly and top up
between changes. The maximum
consumption is 0.5 litre per 600 miles
(1 000 km). Check the level with the vehicle
level, engine cold, using the dipstick.

128
Levels and checks
Operating fault
If this alert persists, do not ignore the
warning; it indicates that a fault has occurred
in the exhaust / particle filter system.
Have the whole system checked by a
CITROËN dealer or a qualified workshop.
If there is risk of blockage of the
filter, this warning lamp comes on
in the instrument panel.
Saturation / Regeneration Because of the higher exhaust
gas temperature resulting from the
normal operation of the particle filter, it is
recommended that you do not park the
vehicle over inflammable materials (grass,
dry leaves, pine needles, ...) so as to avoid
any risk of fire.
Particle filter system (Diesel)
An addition to the catalytic converter, this
filter makes an active contribution to the
preservation of air quality by the retaining
of the unburnt pollutant particles. Black
exhaust fumes are thus no longer emitted.
Operation
This filter, fitted to the exhaust system,
accumulates particles of soot. The engine
management unit controls the automatic
periodic elimination of the soot particles
(regeneration).
The regeneration procedure is invoked
according to the quantity of particles
accumulated and the driving conditions
of the vehicle. During this phase, you
may notice some unusual phenomena -
increased idling speed, cooling fan running,
increase in smoke and higher exhaust gas
temperature - which does not affect the
operation of the vehicle or the environment. After prolonged idling or driving at very
low speeds, you may occasionally
notice water vapour being emitted from the
exhaust when accelerating. This is of no
consequence to the running of the vehicle or
to the environment. To regenerate the filter, it is advised to drive
as soon as possible, when traffic conditions
and the law permit, at a speed of at least
40 mph (around 60 km/h), with an engine
speed above 2 000 rpm for about fifteen
minutes (until the warning lamp and/or the
message disappears).
If possible, avoid switching off the engine
before the end of regeneration of the
filter; repeated interruptions could cause
premature deterioration of the engine oil. It
is not recommended to end regeneration of
the filter with the vehicle stationary.
This alert tells you that the particle filter
is starting to fill up (in conditions of urban
driving of exceptionally long duration: low
speeds, traffic jams etc.)

135
QUICK HELP
8
Failed fuse
Fuses A (amps) Allocation
12 7.5 Right-hand dipped beam headlamp
13 7.5 Left-hand dipped beam headlamp
31 7.5 Relay supply
32 10 Cab lighting
33 15 Rear 12 V socket
34 - Not used
35 7.5 Reversing lamps - Water in Diesel fuel sensor
36 15 Central locking control - Battery
37 7.5 Brake lamps switch - Third brake lamp - Instrument panel
38 10 Central locking
39 10 Audio system - Diagnostic socket - Alarm siren - Programmable additional heating controls - Air conditioning
controls - Tachograph - Battery
40 15 Heated: rear screen (left hand), driver's side mirror
41 15 Heated: rear screen (right hand), passenger's side mirror
42 7.5 ABS control unit and sensor - ASR sensor - DSC sensor - Brake lamps switch
43 30 Windscreen wiper motor
44 20 Cigarette lighter - Front 12 V socket
45 7.5 Door controls
46 - Not used
47 20 Driver's electric window motor
48 20 Passenger electric window motor
49 7.5 Audio system - Instrument panel controls - Driver's electric window
50 7.5 Airbags and pre-tensioners unit
51 7.5 Tachograph - Cruise control - Air conditioning controls
52 7.5 Optional relay supply
53 7.5 Instrument panel - Rear foglamp