2015 CITROEN RELAY cooling

32
Instruments and controls
FUEL GAUGE

The fuel level is tested every time the
ignition is turned on.
The gauge is positioned on:
- F (Full): the fuel tank is full, approximately 90 litres.
- E (Empty): the reserve is now being used, the low fuel warning lamp comes
on continuously.
The reserve when the warning first comes
on is approximately:
- 10 litres for 60 and 90 litre tanks,
- 12 litres for 125 litre tanks.
Fuel tanks of different capacities (60 and
125 litres) are available as an option.
COOLANT TEMPERATURE
The needle is positioned between
C (Cold) and H (Hot): normal operation.
In arduous conditions of use or hot climatic
conditions, the needle may move close to
the red graduations. If the needle enters the red zone or if the
warning lamp comes on:

- stop immediately, switch off the ignition. The fan may continue to operate for a
certain time up to approximately
10 minutes.
- wait for the engine to cool down in order to check the level and top it up if
necessary. Follow this advice:
the cooling system is pressurised. In order
to avoid any risk of scalding, unscrew the
cap by two turns to allow the pressure
to drop.
When the pressure has dropped, check the
level and remove the cap to top-up.
If the needle remains in the red zone,
contact a CITROËN dealer or a qualified
workshop.
Refer to the "Checks - Fuel" section. Refer to the "Checks - Levels and
checks" section.

61
3
EASE OF USE
and
COMFORT
Ventilation
Intake of exterior air Recommended settings for the manual air conditioning
For optimum operation of this system, the settings below are recommended\
:
Recirculation of interior air
This position should only be
temporary.
Used with the air conditioning
switched on and setting of the
force of blown air (from 1 to 4), recirculation
enables you to obtain the required ambient
air comfort level with both hot or cold
settings.
Recirculation temporarily prevents exterior
odours and smoke from entering the
passenger compartment. If I require...
Air
distribution Temperature
Air flow Air
recirculation AC
Heating -
Cooling
Demisting
Defrosting

When your ambient air comfort level has
been reached, return to the intake of exterior
air position to permit renewal of the air in the
passenger compartment and demisting. This
operating mode is preferable. This is the preferred operating
position.

63
3
EASE OF USE
and
COMFORT
Ventilation
Comfort value adjustment ring
The settings range between:
- increasing the interior ambient air temperature HI (High) which goes up to
to a maximum setting of 32,
- cooling the interior ambient air temperature LO (Low) which goes down
to a setting of 16.
Air distribution
A press illuminates the LED on the buttons
which distribute the air flow towards:
the windscreen and front side
window vents (demisting/
defrosting the windows),
the central and side vents (chest
and face),
the vents in the front and rear
areas (feet).
The combination of buttons permits
improvement of air distribution.
Air flow
Successive presses of this button
increase (+) or reduce (-) the
force of the air flow to the interior.
Intake of exterior air / Recirculation of interior air
When the LED is on, the air
recirculates inside the passenger
compartment to prevent the entry of exterior
odours and smoke. This position should be
temporary.
When the ambient air comfort level has been
reached, pressing the button switches the
LED off and reopens the exterior air intake.
Pressing the AUTO button also restores
the intake of exterior air. Returning to this
position permits renewal of the air in the
passenger compartment and demisting.
Pressing the AUTO button again restores
the FULL AUTO function.
Rapid Demisting / Defrosting
Pressing this control permits
rapid clearing of the windows.
The LED is on.
The system manages the air conditioning,
the flow and intake of air, the defrosting
of the rear screen and provides optimum
distribution of the air to the windscreen and
front side windows.
If your vehicle is fitted with additional
heating, switch it off to ensure rapid and
effective demisting/defrosting.
ADDITIONAL REAR VENTILATION
The controls for this system,
additional to the standard cabin
ventilation system, are on the
lower dashboard, to the left of the
steering wheel.
Air outlet
A press on this control activates
the extraction of air to the
outside; the LED comes on.
Press again to switch off.
Air inlet
A press on this control activates
the entry of air into the cabin; the
LED comes on. Press again to
switch off.

11 7
6
Transport solutions
ACCESSORIES
Distribution of loads: distribute the load in
the trailer so that the heaviest objects are as
close as possible to the axle and the nose
weight is close to the maximum authorised
without, however, exceeding it.
Driving advice
A towed vehicle must free wheel: gearbox in
neutral.
Cooling: towing a trailer on a slope
increases the coolant temperature.
As the fan is electrically controlled, its
cooling capacity is not dependent on the
engine speed.
On the contrary, use a high gear to lower the
engine speed and reduce your speed.
In all cases, pay attention to the coolant
temperature. Tyres: check the tyre pressures of the
towing vehicle and of the trailer, observing
the recommended pressures.
Fitting a towbar
We recommend the use of genuine
CITROËN towbars and their harnesses,
which have been tested and approved from
the design stage of your vehicle and that
the fitting of this equipment is entrusted to a
CITROËN dealer.
These genuine towbars are compatible with
the operation of the rear parking sensors
and the reversing camera, if fitted to your
vehicle.
If this equipment is not fitted by a CITROËN
dealer, it must be fitted in line with the
manufacturer's instructions.
Good practice
In certain cases of particularly arduous
use (towing the maximum load up a steep
slope in high temperatures), the engine
automatically limits its power. In this
case, the automatic cutting off of the air
conditioning allows the engine power to be
recovered.
If the coolant temperature
warning lamp comes on, stop the
vehicle and switch off the engine
as soon as possible.
Refer to the "Checks - Levels and
checks" section.
Brakes: towing increases the braking
distance. Drive at a moderate speed,
change down early and brake gradually. Side wind: sensitivity to side wind is
increased. Drive smoothly and at a
moderate speed.
ABS: the system only controls the vehicle,
not the trailer.
Rear parking sensors: the system does not
operate while the vehicle is towing.
Refer to the "Technical data -
Identification markings" section.

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7
CHECKS
Levels and checks
Cooling system
Only use the fluid recommended by the
manufacturer. Otherwise, you risk seriously
damaging your engine. When the engine
is warm, the temperature of the coolant is
controlled by the engine fan. As this fan can
operate with the ignition key removed and
because the cooling system is pressurised,
wait for at least one hour after the engine
has stopped before carrying out any work.
Slacken the cap by 1/4 of a turn to release
the pressure to prevent any risk of scalding.
When the pressure has dropped, remove the
cap and top up the level with coolant.
Power steering fluid level
The vehicle must be parked on level ground
with the engine cold. Unscrew the cap
integrated with the gauge and check the
level which must be between the MIN and
MAX marks.
For access to the reservoir filler cap, remove
the protective cover by removing its three
fixing screws, then remove the second cover
fitted to the cap. Topping up
The level must be between the MIN and
MAX marks on the expansion bottle. If
more than 1 litre of fluid is required to top
up the level, have the system checked by a
CITROËN dealer or a qualified workshop.
Windscreen wash and headlamp wash level
Capacity of the reservoir: approximately
5.5 litres.
For access to the reservoir filler cap, pull on
the telescopic filler pipe and unscrew the
cap a quarter of a turn.
For best quality cleaning and to prevent
freezing, this fluid must not be topped up or
replaced with plain water.
In wintry conditions, the use of an alcohol or
methanol based fluid is recommended.
For access to the header tank filler cap,
remove the protective cover by removing its
three fixing screws.
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.

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.)