gearbox Citroen C8 2008.5 1.G Owner's Manual

Instruments and controls
34
Warning light is indicates Solution - action
Front fog
lamps lit. manual selection. The fog lamps only operate if the side lights or
dipped headlamps are on.

Rear fog
lamps lit. manual selection. The fog lamps only operate if the side lights or
dipped headlamps are on. In conditions of normal
visibility, take care to switch them off on penalty of
being booked. "This light is a dazzling red."
Display is indicates Solution - action
Cruise control lit. cruise control selected. Manual selection. Chapter 3, "Steering wheel
controls" section.

Speed limiter lit. speed limiter selected. Manual selection. Chapter 3, "Steering wheel
controls" section.

Service
spanner lit. service due shortly. Refer to the list of checks in the servicing booklet.
Have the service carried out by a CITROËN
dealer .

Automatic
gearbox displayed. gear lever position selected. Chapter 2, "Instrume
nts and controls" section.

Particle
emission fi lter
saturation
warning displayed and
associated with
the service
warning light. malfunction of the particle
emission fi lter (diesel
additive level, risk of
clogging, ...).
Have the fi lter checked by a CITROËN dealer .
Chapter 7, "Levels" section.

Gearboxes and steering wheel
38
GEARBOXES AND STEERING WHEELPark:
position of the lever
when parked.
To immobilise the vehicle or
start the engine.
To park the vehicle
(handbrake on) and start the
engine.

Drive: position of the lever
while driving.
Reverse:
position of the lever
in reverse gear.
To reverse the vehicle.
Neutral: position of the lever
in neutral.
To move the vehicle forwards
in automatic mode.

Manual: selection of the gears
by pressing the gear lever:
- 1 to 4: petrol engine,
- 1 to 6: Diesel engine.
To move the vehicle forwards in
manual mode.
AUTOMATIC GEARBOX
The four-speed (petrol engine) or
six-speed (Diesel engine) "Porsche
Tiptronic-system" automatic gearbox
offers a choice between:
- the comfort of integral automatic
operation , enhanced by a snow
programme,
- or the pleasure of manual gear
changing . Gear selection gate
- Move the lever in the gate to select
a position. Once the position
is selected, the corresponding
indicator light appears on the
instrument panel display.

Gearboxes and steering wheel
READY TO SET OFF
2
39
Automatic changing of the four or six
gears .
Moving off
- It is essential to press the brake pedal to exit position P ,
- select position R or D ,
You can also move off from position N .
- gradually release the
pressure on the brake
pedal; the vehicle moves
off immediately.
- With your foot on the brake,
release the
handbrake,
- select position R , D or M ,
- gradually release the pressure on the brake
pedal; the vehicle moves
off immediately. The gearbox always selects the most
suitable gear according to the following
parameters:
- the style of driving,
- the road profi le,
- the vehicle load.
The gearbox is then operating in auto-
adaptive mode, without any action on
your part. For immediate maximum
acceleration without touching the
gear lever, press the accelerator
pedal down as far as it will go to the
end of its travel passing the point of
resistance (kick down). The gearbox
will automatically change down or
maintain the gear selected until
maximum engine speed is reached.
With the engine running, to move off
from position
P .
Automatic mode On a descent, the gearbox will
automatically change down in order to
provide effi cient engine braking and
good re-acceleration.
If you take your foot off the accelerator
suddenly, the gearbox will not change
to a higher gear for reasons of safety.
6-speed gearbox (Diesel engine):
when stationary with the gear lever in
position
D (drive), a vibration limiting
device is activated by pressing the
brake pedal.
- Select position D .

Gearboxes and steering wheel
40
- press the lever to the +
sign to change to a higher
gear, from 1 to 4 or from
1 to 6,
- conversely, press the lever to the - sign to change to a
lower gear. You can change from position
D
(automatic mode) to position M
(manual mode) at any time.
Stopping the vehicle, starting
the engine
Reverse gear
- Select position R , with the
vehicle stationary and the
engine at idle.
If the battery is fl at and the lever is
in position P , it will be impossible
to change to another position. - Select position
P to

immobilise the vehicle or
to start the engine , with
the handbrake on or off.
- You can also select position N to park or to

start the engine , with the
handbrake on.
If position N is engaged
inadvertently while driving, allow
the engine to return to idle before
engaging position D to accelerate.
Manual mode
Manual changing of the gears by
pressing.
- Select lever position M , In manual mode, it is only possible to
change from one gear to another if
the vehicle speed and engine speed
permit. If they do not, the vehicle will
operate temporarily in automatic mode.
When the vehicle is stationary or
moving very slowly, the gearbox
automatically selects gear 1.
The
 (snow) programme does not
operate in manual mode.

Gearboxes and steering wheel
READY TO SET OFF
2
41
Good practice
Never select position N when the
vehicle is moving.
Never select positions P or R unless
the vehicle is stationary.
Never change between positions to
optimise braking on a slippery surface.
When the engine is at idle, brakes
not applied, if position R , D or M is
selected the vehicle moves even
without the accelerator being pressed.
For this reason, do not leave children
unsupervised inside the vehicle,
with the engine running .
Operating abnormality
Any operating abnormality is indicated
by an audible signal, accompanied by
the message
"Automatic gear fault"
on the display and fl ashing of the Snow
snowfl ake on the instrument panel.
In this situation the gearbox operates
in downgrade mode (locked in 3rd
gear). You may feel a substantial knock
when changing from P to R and from N
to R (this will not cause any damage to
the gearbox).
Do not exceed 60 mph (100 km/h),
keeping within the limit of local speed
restrictions.
Contact a CITROËN dealer as soon as
possible.
You can return to the automatic
programme at any time.
- Press button  again to switch off
the programme you are in.
Snow programme
In addition to the automatic
programme, there is a special
Snow programme.
This improves starting
and drive when traction is
poor. The snowfl ake appears on the
instrument panel display.
- Press button  once the
vehicle has been started
and position D selected.
The gearbox adapts to driving
on slippery roads.

Gearboxes and steering wheel
42
STEERING WHEEL HEIGHT AND
DEPTH ADJUSTMENT
When the vehicle is stationary, unlock
the steering wheel by lowering the
lever.
Adjust the height and depth of the
steering wheel, then lock by pushing
the lever fully upwards.
MANUAL GEARBOX
5-speed gearbox 6-speed gearbox
To change gear easily, always press
the clutch pedal fully.
To prevent the mat from becoming
caught under the pedal:
- ensure that the mat is positioned correctly,
- never fi t one mat on top of another.
When driving, avoid leaving your hand
on the gear knob as the force exerted,
even if slight, may wear the internal
components of the gearbox over time. Reverse gear (6-speed)
Raise the collar under the gear knob to
engage reverse gear.
Never engage reverse gear before the
vehicle is completely stationary.
The lever should be moved slowly to
reduce the noise on engaging reverse
gear.

READY TO SET OFF
2
43
Starting and stopping
STARTING AND STOPPING
STOP position: steering lock.
The ignition is off.
Good practice when starting Handbrake
On the version with rotating front seat,
the handbrake can be disengaged.
Pulling the handbrake to immobilise
the vehicle then lowering the lever
does not release the brake, it permits
rotation of the driver’s seat.
Pull the button placed at the end of the
handbrake forwards.
The handbrake lever lowers.
You can now rotate the seat.
To return to normal operation, pull the
lever up until it clicks.
If the handbrake is on or has
not been released fully, this is
indicated by:
- a warning light which comes on on the instrument panel,
- an audible signal,
- a message on the display.
Key
Take care not to place the key in
contact with grease, dust, rain or a
damp environment.
A heavy object attached to the key (key
ring, ...) weighing down on the shaft
of the key in the ignition switch may
cause a malfunction.
Running and accessories position.
Certain accessories can be used.
Starting position.
The starter is operated. Diesel pre-heating warning
light
Turn the key to the Running
position.
In cold weather, wait for this warning
light to switch off then operate the
starter (Starting position) until the
engine starts.
If the temperature is high enough, the
warning light comes on for less than
one second, you can start without
waiting. Good practice when stopping
Minimise engine and gearbox wear
When switching off the ignition, let the
engine run for a few seconds to allow
the turbocharger to return to idle.
Do not press the accelerator when
switching off the ignition.
There is no need to engage a gear
after parking the vehicle.

185
Towing a trailer
ACCESSORIES
6
TOWING A TRAILER, CARAVAN, BOAT, ETC...
Refer to the administrative
documents (V5, ...) or to the Petrol
or Diesel "Dimensions, weights
and towed loads" section of
chapter 9.
Distribution of loads: distribute the
load in the trailer so that the heaviest
loads are as close as possible to the
axle and the nose weight is close
to the maximum authorised without,
however, exceeding it.
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.

Dimension A = 0.96 m
Driving advice
A towed vehicle must free wheel:
gearbox in neutral.

186
Towing a trailer
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.
Brakes: towing increases the braking
distance. Drive at a moderate speed,
change down early and brake
gradually. Please contact a CITROËN dealer fi rst
for further information.
Automatic adjustment
For vehicles with Xenon bulbs, and if
the change in load makes it necessary,
this system automatically corrects the
height of the beam after approximately
2 minutes. The driver is then assured
of having optimum lighting and not
causing a nuisance to other road
users.

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, cutting off the air
conditioning allows the engine power
to be recovered, and therefore the
towing speed to be signifi cantly
increased (approximately 12 mph
[20 km/h] more). Sequential control
of the gearbox may also become
unavailable. Lighting
Bicycle carrier If you fi t a bicycle carrier on
the tailgate, deactivate the
rear wiper from the display’s
confi guration menu.
Refer to the "Identifi cation
features" section of chapter 9. Refer to the "Steering wheel
controls" section of chapter 3.
When using a trailer connection,
you must add a fuse. Refer to
the "Changing a fuse" section of
chapter 8.

If the coolant temperature warning light
comes on, stop the vehicle and switch
off the engine as soon as possible.

Tyres: check the tyre pressures of
the towing vehicle and of the trailer,
observing the recommended pressure.
Side wind: sensitivity to side wind is
increased. Drive smoothly and at a
moderate speed.

Towbar
We recommend the use of original
CITROËN towbars, which have been
tested for endurance from the design
stage of your vehicle.
Towing equipment must be fi tted in
accordance with the manufacturer’s
instructions, with particular attention to
the towing capacities of your vehicle,
the load towed, the nose weight and
the electrical connection. As this fi tting
should be carried out by a professional,
we recommend that you entrust the
fi tting of this equipment to a CITROËN
dealer .
In accordance with the general
instructions referred to above, we draw
your attention to the risk connected
with fi tting a towbar or other electrical
accessory which is not recommended
by the CITROËN network . Fitting such
equipment could result in a failure of
your vehicle’s electronic system. Manual adjustment
Adjust your headlamps so as not to
dazzle other road users. Check the
electrical signalling of the trailer.

198
Levels
CHECKS
To check the main levels
and certain components,
in accordance with the
manufacturer’s servicing schedule,
refer to the pages of the servicing
booklet which correspond to your
vehicle’s engine.
Only use products recommended
by CITROËN or products
of equivalent quality and
characteristics.
In order to optimise the operation
of units as important as the braking
circuit, CITROËN selects and offers
specifi c products.
In order to avoid damaging the
electrical units, high pressure washing
to clean the engine compartment is
strictly prohibited.
Oil filter
Change the fi lter regularly, in
accordance with the servicing
schedule. Refer to the servicing booklet to
fi nd out the replacement interval
for these components.
Depending on the environment (dusty
atmosphere...) and the use of the
vehicle (urban driving...), change them
twice as often if necessary.
Refer to the "Under the bonnet" section
of chapter 7. Particle emission filter (Diesel)
It is imperative that particle emission
fi lter maintenance is carried out by a
CITROËN dealer .
On acceleration after the vehicle has
been running for a prolonged period
at very low speed or at idle, you may,
in exceptional circumstances, notice
the emission of water vapour at the
exhaust. This water vapour does not
have any adverse effect on vehicle
handling or the environment.
Battery
At the start of winter, have your battery
checked by a CITROËN dealer .
Brake pads
Brake pad wear depends on the style
of driving, in particular for vehicles
which are used in town, over short
distances. It may be necessary to
check the thickness of the pads, even
between services.
Unless there is a leak on the circuit, a
drop in the brake fl uid level indicates
that the brake pads are worn.
Brake disc/drum wear status
For any information relating to
checking the brake disc/drum wear
status, contact a CITROËN dealer .
Handbrake
Where the handbrake travel is too
great or there is a reduction in the
performance of the system, the
handbrake should be adjusted, even
between services.
Have the system checked by a
CITROËN dealer . Carbon filter and passenger
compartment filter
The carbon fi lter permits continuous
and effective fi ltering of dust.
If the passenger compartment fi lter
becomes clogged, this may reduce
the performance of the air conditioning
system and generate unpleasant
odours.
We recommend the use of a combined
passenger compartment fi lter. By
means of its second special active
fi lter, it contributes to the purifi cation
of the air breathed by the occupants
and to the cleanness of the passenger
compartment (reduction of allergic
symptoms, unpleasant odours and
greasy deposits).
Manual gearbox
Have the level checked in accordance with
the manufacturer’s servicing schedule.