2013.5 Citroen C4 RHD Owner's Manual

9
DRIVING
159





HILL START ASSIST

System which keeps your vehicle im-
mobilised temporarily (approximately
2 seconds) when starting on a gradi-
ent, the time it takes to move your foot
from the brake pedal to the accelerator
pedal.
This function is only active when:


- the vehicle is completely stationary,
with your foot on the brake pedal,

- when certain conditions of gradient
are met,

- with the driver’s door closed.
The hill start assist function cannot be
deactivated.

On an ascending slope, with the ve-
hicle stationary, the vehicle is held
for a brief moment when you release
the brake pedal:



- if you are in fi rst gear or neutral with
a manual gearbox,

- if you are in position A
or M
with an
electronic gearbox.

- if you are in position D
or M
with an
automatic gearbox.


Operation


Do not leave the vehicle while it
is being held in the hill start as-
sist phase.
If you need to leave the vehi-
cle while the engine is running,
apply the parking brake manu-
ally then ensure that the parking
brake warning lamp is on (not
fl ashing) in the instrument panel.

On a descending slope, with the ve-
hicle stationary and reverse gear en-
gaged, the vehicle is held for a brief
moment when you release the brake
pedal.




Operating fault

If a fault occurs with the system, these
warning lamps come on. Contact a
CITROËN dealer or a qualifi ed work-
shop to have the system checked.

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GEAR EFFICIENCY INDICATOR

System which reduces fuel consump-
tion by advising the driver to change up.
With an electronic gearbox, the system
is only active in manual mode.

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 instruc-
tion without engaging the intermediate
gears.
The gear engagement recommenda-
tions must not be considered compulso-
ry. In fact, the confi guration of the road,
the amount of traffi c 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.
- You press the accelerator pedal.
Example:


- You are in third gear.

- The system may suggest that you
engage a higher gear.
The information appears in the instru-
ment panel in the form of an arrow.
On vehicles with manual gearbox, the
arrow can be accompanied by the rec-
ommended gear.

The system adapts its gear
change recommendation ac-
cording to the driving conditions
(slope, load, ...) and the de-
mands of the driver (power, ac-
celeration, braking, ...).
The system never suggests:


- engaging fi rst gear,

- engaging reverse gear,

- engaging a lower gear.

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TYRE UNDER-INFLATION
DETECTION

System which automatically checks the
pressures of the tyres while driving.
The system continuously monitors the
pressures of the four tyres, as soon as
the vehicle is moving.
A pressure sensor is located in the
valve of a each tyres (except the spare
wheel).
The system triggers an alert if a drop
in pressure is detected in one or more
tyres.
The tyre under-infl ation detection sys-
tem is an aid to driving which does not
replace the need for the driver to be
vigilant or to drive responsibly.
This system does not avoid the
need to check the tyre pressures
regularly (including the spare
wheel) and before a long jour-
ney.
Driving with under-infl ated tyres
adversely affects road holding,
extends braking distances and
causes premature tyre wear,
particularly under arduous con-
ditions (vehicle loaded, high
speed, long journey).

Driving with under-infl ated tyres
increases fuel consumption.
The tyre pressures for your vehi-
cle can be found on the tyre pres-
sure label (see the "Identifi cation
markings" section).
The tyre pressures must be
checked when the tyres cold
(vehicle stopped for 1 hour or
after driving for less then 6 miles
(10 km) at moderate speed).
Otherwise, add 0.3 bar to the val-
ues indicated on the label.

9
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162
The fl ashing and then fi xed
illumination of the under-infl a-
tion warning lamp accompa-
nied by the illumination of the
"service" warning lamp indi-
cates a fault with the system.

Operating fault

The alert is given by the fi xed il-
lumination of this warning lamp,
accompanied by an audible sig-
nal, and depending on equip-
ment, the display of a message.

Under-inflation alert


The alert is maintained until the
tyre or tyres concerned is rein-
fl ated or repaired.

The loss of pressure detected
does not always lead to visible
deformation of the tyre. Do not
rely on just a visual check.

This alert is also displayed when
one or more wheels is not fi tted
with a sensor.
In the event of a problem on one of
the tyres, the symbol or the message
appears, according to equipment, to
identify it.


Reduce speed, avoid sudden steer-
ing movements or harsh brake ap-
plications.


Stop as soon as it is safe to do so.


In the event of a puncture, use the
temporary puncture repair kit or the
spare wheel (according to equip-
ment),
or


if you have a compressor, the one in
the temporary puncture repair kit for
example, check the four tyre pres-
sures when cold,
or


if it is not possible to check the tyre
pressures at the time, drive care-
fully at reduced speed. In this case, monitoring of the tyre pres-
sures is not assured.
Have the system checked by a
CITROËN dealer or a qualifi ed work-
shop.

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163











STOP & START

The Stop & Start system puts the en-
gine temporarily into standby - STOP
mode - during stops in the traffi c (red
lights, traffi c jams, or other...). The en-
gine restarts automatically - START
mode - as soon as you want to move
off. The restart takes place instantly,
quickly and silently.
Perfect 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

The "ECO"
warning lamp comes on
in the instrument panel and the en-
gine goes into standby automatically:


- with a manual gearbox
, at speeds
below 12 mph (20 km/h), when you
put the gear lever into neutral and
release the clutch pedal, If your vehicle is fi tted with
the system, a time coun-
ter calculates the sum of
the periods in STOP mode
d uring a journey. It resets itself to zero
every time the ignition is switched on
with the key.

- with an electronic gearbox
, at a
speed below 5 mph (8 km/h), when
you press the brake pedal or put the
gear lever into position N
. With an electronic gearbox, for
your comfort during parking
maoeuvres, STOP mode is not
available for a few seconds after
coming out of reverse gear.
STOP mode does not affect the
functionality of the vehicle, such
as braking, power steering, for
example.
Special cases: STOP mode
unavailable
STOP mode is not invoked when:


- the driver's door is open,

- the driver's seat belt is not fastened,

- the vehicle has not exceeded 6 mph
(10 km/h) since the last engine start
using the key,

- the electric parking brake is applied
or being applied,

- the engine is needed to maintain a
comfortable temperature in the pas-
senger compartment,

- demisting is active,

- some special conditions (battery
charge, engine temperature, brak-
ing assistance, ambient tempera-
ture...) where the engine is needed
to assure control of a system.
In this case, the "ECO"
warn-
ing lamp fl ashes for a few sec-
onds, then goes off. Never refuel with the engine in
STOP mode; you must switch off
the ignition with the key.

This operation is perfectly normal.

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164

Deactivation

Going into engine START mode
At any time, press the "ECO OFF"

switch to deactivate the system.
This is confi rmed by the switch warning
lamp coming on accompanied by the
display of a message.
Special cases: START invoked
automatically
If the system has been deacti-
vated in STOP mode, the engine
restarts immediately. The "ECO"
warning lamp goes
off and the engine starts auto-
matically:


- with a manual gearbox
, when you
fully
depress the clutch pedal,

- with an electronic gearbox
:


●
gear lever in position A
or M
, when
you release the brake pedal,

●
or gear lever in position N
and the
brake pedal released, when you
move the gear lever to position A

or M
,

●
or when you engage reverse
gear.

For safety reasons or to ensure smooth
operation, START mode is invoked au-
tomatically when:


- you open the driver's door,

- you unfasten the driver's seat belt,

- the speed of the vehicle exceeds
15 mph (25 km/h) with a manual
gearbox or 7 mph (11 km/h) with an
electronic gearbox,

- the electric parking brake is being
applied,

- some special conditions (battery
charge, engine temperature, brak-
ing assistance, ambient tempera-
ture...) where the engine is needed
to assure control of a system.
In this case the "ECO"
warning
lamp fl ashes for few seconds,
then goes off.
With a manual gearbox in STOP
mode, if a gear is engaged with-
out fully depressing the clutch
pedal, a warning lamp comes
on or an alert message is dis-
played asking you to depress
the clutch pedal to restart the
engine.



Reactivation

Press the "ECO OFF"
switch again.
The system is active again; this is con-
fi rmed by the switch warning lamp go-
ing off and the display of a message.
The system is reactivated auto-
matically at every new start us-
ing the key.
This operation is perfectly normal.

9
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165

Maintenance

In the event of a malfunction with the sys-
tem, the "ECO OFF"
switch warning lamp
fl ashes, then comes on continuously.
Have it checked by a CITROËN dealer or
a qualifi ed workshop.


Operating fault

Before doing anything under the
bonnet, deactivate the Stop &
Start system to avoid any risk of
injury resulting from automatic
operation of START mode.
This system requires a specifi c battery
with a special specifi cation and technol-
ogy (reference numbers available from
a CITROËN dealer or a qualifi ed work-
shop).
Fitting a battery not listed by
CITROËN introduces the risk of mal-
function of the system.
The Stop & Start system makes
use of advanced technology. All
work on this type of battery must
be done only by a CITROËN
dealer or a qualifi ed workshop.
In the event of a fault in STOP
mode, the vehicle may stall. All
of the instrument panel warning
lamps come on.
Depending on version, an alert
message may also be displayed
asking you to put the gear lever
into position N
and put your foot
on the brake pedal.
It is then necessary to switch off
the ignition, then restart the en-
gine using the key.

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BLIND SPOT SENSORS


This driving assistance system warns
the driver of the presence of another
vehicle in the blind spot angle of their
vehicle (areas masked from the driver's
fi eld of vision), as soon as this presents
a potential danger.

Operation





On switching on the ignition, or en-
gine running, press this button to
activate the function; the warning
lamp comes on.

This system is designed to im-
prove safety when driving and is
in no circumstances a substitute
for the use of the interior rear
view mirror and door mirrors. It
is the driver's responsibility to
constantly check the traffi c, to
asses the distances and relative
speeds of other vehicles and to
predict their movements before
deciding whether to change
lane.
The blind spot sensor system
can never replace the vigilance
and responsibility of the driver.
Sensors fi tted in the front and rear bum-
pers monitor the blind spots. A warning lamp appears in the door
mirror on the side in question:


- immediately, when being overtaken,

- after a delay of about one second,
when overtaking a vehicle slowly.