2011.5 Citroen C4 DAG engine overheat

1
MONITORING
36





Service


temporarily,
accompanied by
a message. A minor malfunction has
occurred for which there is
no specifi c warning lamp. Identify the malfunction by reading the
message displayed in the screen, such
as, for example:


- the opening of the doors, boot or
bonnet,

- the engine oil level,

- the remote control battery,

- the tyre pressures,

- saturation of the particle emission fi lter on
Diesel vehicles (see "Checks - § Checks/
Particle emissions fi lter").

For any other malfunctions, contact a
CITROËN dealer or a qualifi ed workshop.

fi xed,
accompanied by
a message and
an audible signal. A major malfunction has
occurred for which there is no
specifi c warning lamp. Identify the malfunction by reading the
message displayed in the screen and
contact a CITROËN dealer or a qualifi ed
workshop.

Warning lamp



is on



Cause



Action/Observations








Foot on the
brake pedal


fi xed. The brake pedal is not
pressed. With the 6-speed electronic gearbox
system, press the brake pedal to start the
engine (lever in position N
).
If you wish to release the parking brake
without pressing the brake pedal, this
warning lamp will remain on.

fl ashing. With the 6-speed electronic
gearbox system, if you hold
the vehicle on an incline using
the accelerator for too long,
the clutch overheats. Use the brake pedal and/or the electric
parking brake.

11
PRACTICAL INFORMATION
213





TOWING A TRAILER,
A CARAVAN, ETC.
We recommend the use of genu-
ine CITROËN towbars and their
harnesses that have been tested
and approved from the design
stage of your vehicle, and that
the fi tting of the towbar is en-
trusted to a CITROËN dealer or
a qualifi ed workshop.
If the towbar is not fi tted by a
CITROËN dealer, it is impera-
tive that it is fi tted in accordance
with the vehicle manufacturer's
instructions. The rear parking sensors will
be deactivated automatically if
a genuine CITROËN towbar is
used.

Towbar suitable for the attachment of a
trailer or caravan with additional lighting
and signalling.
Your vehicle is primarily designed for
transporting people and luggage, but it
may also be used for towing a trailer. Driving with a trailer places greater de-
mands on the towing vehicle and the
driver must take particular care.


Driving advice


Distribution of loads


)
Distribute the load in the trailer so
that the heaviest items are as close
as possible to the axle and the nose
weight approaches the maximum
permitted without exceeding it.
Air density decreases with altitude, thus
reducing engine performance. Above
1 000 metres, the maximum towed load
must be reduced by 10 % for every
1 000 metres of altitude.
Refer to the "Technical Data" section for
details of the weights and towed loads
which apply to your vehicle.

Side wind


)
Take into account the increased
sensitivity to side wind.


Cooling
Towing a trailer on a slope increases
the temperature of the coolant.
As the fan is electrically controlled, its
cooling capacity is not dependent on
the engine speed.


)
To lower the engine speed, reduce
your speed. The maximum towed load on a long in-
cline depends on the gradient and the
ambient temperature.
In all cases, keep a check on the cool-
ant temperature.


)
If the warning lamp and the
STOP
warning lamp come
on, stop the vehicle and
switch off the engine as
soon as possible.


Braking
Towing a trailer increases the braking
distance.
To avoid overheating of the brakes on a
long mountain type of descent, the use
of engine braking is recommended.

Tyres


)
Check the tyre pressures of the towing
vehicle and of the trailer, observing the
recommended pressures.


Lighting


)
Check the electrical lighting and sig-
nalling on the trailer.

316
FREQUENTLY ASKED QUESTIONS



QUESTION



ANSWER



SOLUTION


A telephone connects
automatically,
disconnecting another
telephone. Automatic connection overrides manual connection. Modify the telephone settings to remove automatic
connection.
An IPod is not recognised
when connecting to the
USB port. The IPod is of a generation that is not compatible with the USB. Connect the IPod to the AUX Jack socket using a
suitable cable (not supplied).
The hard disk or device
is not recognised when
connecting to the USB
port. Some hard disks and devices need a power supply greater than is
provided by the audio system. Connect the device to the 230 V socket, the 12 V
socket or an external power supply.

Caution
: ensure that the device does not transmit
a voltage greater than 5 V (risk of destruction of
the system).
When streaming, the
sound cuts momentarily. Some telephones prioritise connection of the "hands-free" profi le. Delete the "hands-free" connection profi le to
improve streaming.
In "Random all" play,
not all of the tracks are
played. In "Random all" play, the system can only take into account up
to 999 tracks.
With the engine off, the
audio system switches
off after a few minutes
of use. When the engine is switched off, the audio system operating time
depends on the battery charge.
The switch-off is normal: the audio system switches to economy mode
and switches off to prevent discharging the vehicle's battery. Start the vehicle's engine to increase the battery
charge.
The message "the audio
system is overheated"
appears on the display. In order to protect the installation if the surrounding temperature is too
high, the audio system switches to an automatic thermal protection mode
leading to a reduction of the volume or stopping of the playing of the CD. Switch the audio system off for a few minutes to
allow the system to cool.