boot CITROEN C4 AIRCROSS DAG 2021 Handbook (in English)

121
Driving
6obstacles that are very low (pavements, studs,
etc.) or very thin (trees, posts, wire fences, etc.).
– Certain obstacles located in the sensors’ blind spots may not be detected or may no longer be
detected during the manoeuvre.
– Certain materials (fabrics) absorb sound waves: pedestrians may not be detected.– A front or rear impact to the vehicle can upset the sensors’ settings, which is not always
detected by the system: distance measurements
may be distorted.
– If the boot is heavily loaded, the vehicle may tilt, affecting distance measurements.
The vehicle's sensors and camera(s) may be
impaired by:
– accumulated snow or fallen leaves on the road,– adverse weather conditions (heavy rain, thick fog, falling snow),– noise interference from noisy vehicles and machinery (lorries, pneumatic drills, etc.).
Do not use the function under the
following exterior conditions:
– Alongside a soft shoulder (e.g. ditch) or quay or on the edge of a drop.– When the road surface is slippery (e.g. ice).
If any of the following malfunctions
occurs, do not use the system:
– If a tyre is under-inflated.– If one of the bumpers is damaged.– If one of the cameras is faulty.
If the vehicle has undergone any of the
following modifications, do not use the
function:
– When carrying an object extending beyond the dimensions of the vehicle (ladder on the
roof bars, bicycle carrier on the tailgate, etc.).
– With a non-approved towball in place.– With snow chains fitted.– When driving on a small-diameter or "space-saver" type spare wheel.– When the wheels fitted are a different size from the original ones.– After modifying one or both bumpers (added protection).– If the sensors have been repainted other than by the CITROËN dealer network.– With sensors not approved for the vehicle.
Malfunctions
If the parking sensor malfunction occurs during use, indicated by this warning lamp
coming on, it causes the function to deactivate.
In the event of a malfunction, have the system
checked by a CITROËN dealer or a qualified
workshop.
In the event of a power steering malfunction, this warning lamp is
displayed on the instrument panel, accompanied
by a warning message.
You must stop as soon as it is safe to do so.
Contact a CITROËN dealer or a qualified
workshop.

128
Practical information
► Refit protective plug 2 to carrier 1.► Carefully stow the towball in its bag away from knocks and dirt.
Maintenance
Correct operation is only possible if the towball
and its carrier are kept clean.
Before cleaning the vehicle with a high-pressure
jet wash, the towball must be removed and the
protective plug fitted to the carrier.
Apply the label provided to a clearly visible area, close to the carrier or in the
boot.
Go to a CITROËN dealer or a qualified
workshop for any work on the towbar system.
Towing device
Load distribution► 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. The maximum load which
can be towed must be reduced by 10% per
1,000 metres of altitude.
Use towing devices and their genuine
wiring harnesses approved by CITROËN.
It is recommended that the installation be
performed by a CITROËN dealer or a
qualified workshop.
If not fitted by a CITROËN dealer, it
must still be fitted in accordance with the
manufacturer's instructions.
Certain driving or manoeuvring aid functions
are automatically deactivated if an approved
towing system is used.
Observe the maximum authorised
towable weight, indicated on the vehicle's
registration certificate, the manufacturer's
label as well as in the Technical data section
of this guide.
Complying with the maximum authorised
nose weight (towball) also includes the
use of accessories (bicycle carriers, tow
boxes, etc.).
Observe the legislation in force in the
country where you are driving.
Load reduction mode
System which manages the use of certain
functions according to the level of charge
remaining in the battery.
When the vehicle is being driven, the load
reduction function temporarily deactivates certain
functions, such as air conditioning, heated rear
screen, etc.
The deactivated functions are reactivated
automatically as soon as conditions permit.
Energy economy mode
This system manages the duration of use of
certain functions, in order to conserve a sufficient
level of charge in the battery with the ignition off.
After switching off the engine, you can still
use functions such as the audio and telematic
system, the wipers and the dipped beam
headlamps or courtesy lamps, for a combined
duration of approximately 40 minutes.
Switching to this mode
A message appears in the instrument panel
screen indicating that the vehicle has switched to
economy mode and the active functions are put
on standby.
If a telephone call is being made at this
time, it will be maintained for around 10
minutes with the Bluetooth hands-free system
of your audio system.
Exiting the mode
These functions are automatically reactivated the
next time the vehicle is used.
To restore the use of these functions
immediately, start the engine and let it run:
– For less than 10 minutes, to use the equipment for approximately 5 minutes.
– For more than 10 minutes, to use the equipment for approximately 30 minutes.
Let the engine run for the specified duration to
ensure that the battery charge is sufficient.
To recharge the battery, avoid repeatedly or
continuously restarting the engine.
A flat battery prevents the engine from
starting.
For more information on the
12 V battery,
refer to the corresponding section.
Roof bars
For safety reasons and to avoid
damaging the roof, it is essential to use
the transverse bars approved for your vehicle.
Observe the fitting instructions and the
conditions of use in the guide supplied
with the roof bars.

140
In the event of a breakdown
Access to the kit

This kit is installed in the storage box, under the
boot floor.
Repair procedure
Do not remove any foreign bodies (e.g.
nail, screw) which have penetrated into
the tyre.
► Park the vehicle without obstructing traffic and apply the parking brake.► Follow the safety instructions (hazard warning lamps, warning triangle, high visibility
vest, etc.) according to the legislation in force in
the country of driving.
► Switch off the ignition.► Uncoil the pipe stowed under the compressor.
3.Removable towing eye and flat blade
screwdriver
The flat blade screwdriver allows the cover
plate on the front or rear bumper to be
opened to screw in the removable towing
eye.
For more information on Towing the vehicle
and using the removable towing eye, refer to the
corresponding section.
With temporary puncture repair kit

4.12 V compressor with a cartridge of sealant and a speed limit sticker
For temporary repair of a tyre and to adjust
the tyre pressure.
For more information about the Temporary
puncture repair kit, refer to the corresponding
section.
With spare wheel

5. Wheelbrace
For removing the wheel trim and the wheel
bolts.
6. Jack with integrated handle
To raise the vehicle.
7. Wheel bolt cap removal tool (depending on
equipment)
For removing the wheel bolt head finishers on
alloy wheels.
For further information on the Spare wheel,
please refer to the corresponding section.
These tools are specific to the vehicle and may vary according to the level of
equipment.
Do not use them for any other purpose.
The jack must only be used to change a wheel with a damaged or punctured tyre.
Do not use any jack other than the one
supplied with the vehicle.
If the vehicle does not have its original jack,
contact a CITROËN dealer or a qualified
workshop to obtain the one that was intended
by the manufacturer.
The jack meets European standards, as
defined in the Machinery Directive 2006/42/
CE.
The jack does not require any maintenance.
Temporary puncture repair kit
Scan the QR Code on page 3 to view
explanatory videos.
Made up of a compressor and a sealant
cartridge, it allows you to carry out a temporary
repair of the tyre so that you can drive to the
nearest garage.
It is designed to repair most punctures located
on the tyre tread.
For more information on the Tool kit,
refer to the corresponding section.

141
In the event of a breakdown
8Access to the kit

This kit is installed in the storage box, under the
boot floor.
Repair procedure
Do not remove any foreign bodies (e.g.
nail, screw) which have penetrated into
the tyre.
► Park the vehicle without obstructing traffic and apply the parking brake.► Follow the safety instructions (hazard warning lamps, warning triangle, high visibility
vest, etc.) according to the legislation in force in
the country of driving.
► Switch off the ignition.► Uncoil the pipe stowed under the compressor.

► Connect the pipe from the compressor to the bottle of sealant.

► Turn the bottle of sealant over and secure it in the notch provided on the compressor.► Remove the valve cap from the tyre to be repaired, and place it in a clean area.

► Connect the hose from the bottle of sealant to the valve of the tyre to be repaired and tighten
firmly.
► Check that the compressor switch is in position "O".► Fully uncoil the electric cable stowed under the compressor.► Connect the compressor's electric plug to the vehicle's 12 V socket.
Only the 12 V socket located at the front
of the vehicle can be used to power the
compressor .
► Affix the speed limit sticker .
The speed limit sticker must be secured
to the interior of the vehicle in the area
close to the driver, to remind the driver that a
wheel is in temporary use.

143
In the event of a breakdown
8The tyre inflation pressures are given on this label.


► Start the compressor by placing the switch at position " I" and adjust the pressure to the value
shown on the vehicle's tyre pressure label. To
deflate: press the black button located on the
compressor pipe, near the valve connection.
If after 7 minutes the pressure of 2 bar is
not reached, the tyre is damaged;
contact a CITROËN dealer or a qualified
workshop for assistance.
► Once the correct pressure is reached, put the switch in position " O".► Remove the kit and stow it.
Should the pressure of one or more tyres
be adjusted, it is necessary to reinitialise
the under-inflation detection system.
For more information on Tyre under-inflation
detection, refer to the corresponding section.
Spare wheel
Scan the QR Code on page 3 to view
explanatory videos.
For more information on the Tool kit,
refer to the corresponding section.
Access to the spare wheel

The spare wheel is installed in the boot, under
the floor.
Removing the spare wheel

► Unclip and remove the tool storage box or remove the polystyrene cover (depending on
version).
► Slacken the central nut.► Remove the fastening device (nut and bolt).► Lift the spare wheel towards you from the rear.► Take the wheel out of the boot.
Removing a wheel
Parking the vehicle
Immobilise the vehicle where it does
not obstruct traffic: the ground must be level,
stable and non-slippery.
With a manual gearbox, engage first gear
to lock the wheels, apply the parking brake,
unless it is programmed to be in automatic
mode, and switch off the ignition.

144
In the event of a breakdown

► Remove the bolts and store them in a clean place.► Remove the wheel.
Stowing the damaged wheel► To stow an alloy wheel , first remove
the wheel trim from the centre of the wheel so
that the fastening device (nut and bolt) can be
put in place.
► In the case of a "space saver" type
spare wheel, the damaged wheel cannot be
stowed under the floor. It must be placed in
the boot; use a cover to protect the inside of
the boot.
Fitting a wheel

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to lock the wheels, apply the parking brake,
unless it is programmed to be in automatic
mode, and switch off the ignition.
Check for the fixed illumination of the parking
brake indicator lamps in the instrument panel.
The occupants must get out of the vehicle
and wait where they are safe.
If necessary, place a chock under the wheel
diagonally opposite the wheel to be changed.
Never go underneath a vehicle raised using a
jack; use an axle stand.
Wheel with wheel trim
When removing the wheel , first remove
the wheel trim by pulling at the valve aperture
using the wheelbrace.
When refitting the wheel , refit the wheel
trim, starting by placing its aperture in line
with the valve and then pushing it into place
all round its edge with the palm of your hand.


– If the vehicle has steel wheels, remove the wheel trim.– If the vehicle has alloy wheels, remove the central bolt cover using tool 7.– If the vehicle is so equipped, fit security bolt socket 2 to wheelbrace 5 to slacken the security
bolt.
– Slacken the other bolts using the wheelbrace 5 only.

► Place the foot of jack 6 on the ground and ensure that it is directly below the front A or rear B jacking point on the underbody, whichever
is closest to the wheel to be changed.


► Extend jack 6 until its head comes into contact with jacking point A or B; contact area A
or B on the vehicle must be properly inserted
into the central part of the head of the jack.
► Raise the vehicle until there is sufficient space between the wheel and the ground to
admit the spare (not punctured) wheel easily.
Ensure that the jack is stable. If the
ground is slippery or loose, the jack may
slip or collapse - risk of injury!
Take care to position the jack strictly at
one of the jacking points A or B under the
vehicle, ensuring that the head of the jack is
centred under the contact area of the vehicle.
Otherwise, there is a risk of damage to the
vehicle and/or of the jack collapsing - risk of
injury!

145
In the event of a breakdown
8

► Remove the bolts and store them in a clean place.► Remove the wheel.
Stowing the damaged wheel► To stow an alloy wheel, first remove
the wheel trim from the centre of the wheel so
that the fastening device (nut and bolt) can be
put in place.
► In the case of a "space saver" type
spare wheel, the damaged wheel cannot be
stowed under the floor. It must be placed in
the boot; use a cover to protect the inside of
the boot.
Fitting a wheel

Fitting a steel or ‘space-saver’ type
spare wheel
If the vehicle is equipped with alloy wheels,
the washers do not make contact with the
steel or ‘space-saver’ type spare wheel. The
wheel is secured by the conical surface of
each bolt.


► Fit the wheel on the hub.► Screw in the bolts by hand as far as possible.► Pre-tighten the security bolt using the wheelbrace 5 equipped with a security socket 2.► Pre-tighten the other bolts using the wheelbrace 5 only.

► Lower the vehicle again fully .► Fold jack 6 and remove it.

► Tighten the security bolt using the wheelbrace 5 equipped with a security socket 2.► Tighten the other bolts using the wheelbrace 5 only.► Refit the bolt covers to each of the bolts (depending on equipment).► Store the tools.

146
In the event of a breakdown
Refitting the lamp unitsPerform the operations in the reverse
order to dismantling.
Opening the bonnet / Accessing the
bulbs
With the engine warm, proceed with caution -
risk of burns!
Take care with objects or clothing that could
be caught in the blades of the cooling fan -
risk of strangulation!
Halogen bulbs (Hx)To ensure good quality lighting, check
that the bulb is correctly positioned in its
housing.
Light-emitting diode (LED)
headlamps and lamps
Depending on version, the affected types of
headlamps / lamps are:
– Daytime running lamps / sidelamps.– Direction indicator side repeaters.– Third brake lamp.– Number plate lamps.
Putting the spare wheel
back in place
The punctured wheel cannot be placed in
the boot under the floor.


► Put the spare wheel back in place in its housing.► Slacken the nut on the bolt by a few turns.► Position the fastening device (nut and bolt) in the middle of the wheel.► Tighten the central nut sufficiently to retain the wheel correctly.► Put the tool box back in place in the middle of the wheel and clip it in place.► Clip the tool storage box or put the polystyrene cover back in place (depending on
version).
If there is no wheel in the well, the
fastening device (nut and bolt) cannot be
refitted.
After changing a wheel

With a "space-saver" type spare wheel
Deactivate certain driving aid functions
(Active Safety Brake, Adaptive cruise control,
etc.).
Do not exceed the maximum authorised
speed of 50 mph (80 km/h).Driving with more than one “space-saver”
type spare wheel is prohibited.
Visit a CITROËN dealer or a qualified
workshop as soon as possible to have
the tightness of the bolts and the pressure of
the spare wheel checked.
Have the punctured tyre examined. After
inspection, the technician will advise you on
whether the tyre can be repaired or if it must
be replaced.
Changing a bulb
In some weather conditions (e.g. low
temperature or humidity), misting on the
internal surface of the glass of the headlamps
and rear lamps is normal, and will disappear
after the lamps have been on for a few
minutes.
The headlamps have polycarbonate lenses with a protective coating:
– Do not clean them with a dry or abrasive
cloth, nor with detergent or solvent
products.
– Use a sponge and soapy water or a pH neutral product.– When using a high-pressure washer on persistent marks, do not keep the lance
directed towards the headlamps, lamps or
their edges for too long, so as not to damage
their protective coating and seals.
Changing a bulb must only be done with
the ignition off and after the headlamp /
lamp has been switched off for several
minutes - risk of serious burns!
Do not touch the bulb directly with your
fingers; use a lint-free cloth.
It is essential only to use anti-ultraviolet
(UV) type bulbs, so as not to damage the
headlamp.
Always replace a failed bulb with a new bulb
of the same type and specification. To avoid
lighting imbalance, replace the bulbs in pairs.

148
In the event of a breakdown
the bulbs on the corresponding side has
failed.
► Turn the bulb holder a eighth of a turn anti-clockwise and remove it.► Remove the bulb and replace it.
Amber coloured bulbs must be replaced by bulbs with identical specifications and
colour.
Dipped beam headlamps

► Remove the protective cover by unscrewing it.► Disconnect the bulb connector .► Pull out the bulb and replace it.
Main beam headlamps

► Remove the protective cover by unscrewing it.► Disconnect the bulb connector.► Pull out the bulb and replace it.
Front foglamps

► Remove the protective cover by unscrewing it.► Disconnect the bulb connector.
► Turn the lamp a quarter turn anti-clockwise, pull it out and replace it.
Rear lamps
1.Brake lamps / Sidelamps (W21/5W)
2. Direction indicators (WY21W)
3. Reversing lamp or foglamp (P21W)
Replacing lamp units
These bulbs are changed from outside the boot.

149
In the event of a breakdown
8► Identify the defective bulb then open the boot.► Using a thin, flat blade screwdriver, unclip the two plastic covers, then flip them down.► Unscrew the two fixing screws located in the openings.

► Unclip the lamp unit and carefully extract it pulling straight towards the outside.► Hold the lamp unit and disconnect the connector.► Turn the bulb holder of the faulty lamp unit a quarter turn anti-clockwise and pull it out.► Remove the bulb and replace it.
Make sure to engage the lamp unit in its
guides while keeping it in line with the
vehicle.
Tighten sufficiently to ensure sealing, but
without damaging the lamp unit.
Reversing lamp or foglamp.

For the replacement of this type of lamp, contact
a CITROËN dealer or a qualified workshop.
Interior lighting
Courtesy lamps (W5W)
Front courtesy lamp

► Using a thin, flap tip screwdriver , unclip the entire console surrounding the courtesy lamp.► Remove the defective bulb and replace it.
► Fit the console back into place around the courtesy lamp and clip it correctly.
Rear courtesy lamp

► Using a thin, flat blade screwdriver , unclip the courtesy lamp.► Remove the defective bulb and replace it.► Fit the console back and clip it in place.
Boot (W5W)

► Unclip the cover using a small flat blade screwdriver.► Pull the bulb out and change it.► Put the unit back in place.