ESP CITROEN C4 PICASSO 2020 Repair Manual

202
Checks
Unless otherwise indicated, check these
components in accordance with the
manufacturer's service schedule and according
to your engine.
Other wise, have them checked by a CITROËN
dealer or a
qualified workshop.
12 V battery
The battery does not require any
maintenance.
However, check regularly that the
terminals are correctly tightened
(versions without quick release terminals)
and that the connections are clean.
For more information and the precautions
to take before starting work on the 12 V
battery , refer to the corresponding
section.
Versions equipped with Stop & Start are
fitted with a
12 V lead-acid battery of
specific technology and specification.
Its replacement should be carried out
only by a
CITROËN dealer or a qualified
workshop.
Air filter
Depending on the environment
(e.g. dusty atmosphere) and the
use of the vehicle (e.g. city driving),
replace it twice as often if
necessary .
Passenger compartment
filter
Depending on the environment
(e.g. dusty atmosphere) and the
use of the vehicle (e.g. city driving),
replace it twice as often if
necessary.
A clogged passenger compartment
filter may have an adverse effect on
the per formance of the air conditioning
system and generate undesirable odours.
Oil filter
Change the oil filter each time the
engine oil is changed.
Particle filter (Diesel)
The start of saturation of the particle
filter is signalled by the temporary
illumination of this warning lamp
accompanied by a message warning
of the risk of the filter clogging up.
Traffic conditions permitting, regenerate
the filter by driving at a
speed of at least
37

mph (60 km/h) until the warning lamp
goes off.
If the warning lamp stays on, this indicates
a

low Diesel additive level.
For more information on Checking levels ,
refer to the corresponding section.
On a

new vehicle, the first particle
filter regeneration operations may be
accompanied by a "burning" smell, which
is per fectly normal.
Following prolonged operation of the
vehicle at very low speed or at idle,
you may, in exceptional circumstances,
notice the emission of water vapour at the
exhaust on acceleration. This does not
affect the behaviour of the vehicle or the
environment.
Practical information

203
Manual gearbox
The gearbox does not require any
maintenance (no oil change).
Automatic gearbox
The gearbox does not require any
maintenance (no oil change).
Brake pads
Brake wear depends on the style
of driving, particularly in the case
of vehicles used in town, over short
distances. It may be necessary to
have the condition of the brakes
checked, even between vehicle
services.
Unless there is a
leak in the circuit, a drop in
the brake fluid level indicates that the brake
pads are worn.
Brake disc wear
For information on checking brake
disc wear, contact a CITROËN
dealer or a
qualified workshop.
Electric parking brake
This system does not require any
specific check. However, in the
event of a problem, have the system
checked by a
CITROËN dealer or
a


qualified workshop.
For more information on the Electric
parking brake , refer to the corresponding
section.
Wheels and tyres
The pressure must be checked on
all tyres, including the spare wheel,
when the tyres are "cold", at least
once a
month and before a long
j o u r n ey. The pressures given on the tyre pressure label
are valid for "cold" tyres. If you have driven for
more than 10
minutes or more than 6 miles
(10 kilometres) at more than 31 mph (50 km/h),
0.3 bar (30 kPa) should be added to the values
given on the label.
Under-inflation increases fuel consumption.
Non-compliant tyre pressure causes premature
wear on tyres and has an adverse effect on the
vehicle's road holding – Risk of an accident!
Driving with worn or damaged tyres reduces
braking efficiency and control of the vehicle's
steering. Regular inspections of the condition
of tyres (tread and sides) and rims are
recommended as well as making sure that
valves are fitted.
Using different size wheels and tyres from
those specified can affect the lifetime of tyres,
wheel rotation, ground clearance and the
speedometer reading and have an adverse
effect on road holding.
Fitting different tyres on the front and rear axles
can cause the ESC to mistime.
7
Practical information

204
Only use products recommended by
CITROËN or products of equivalent quality
and specification.
In order to optimise the operation of
components as important as those in the
braking system, CITROËN selects and
offers very specific products.
After washing the vehicle, dampness, or
in wintry conditions, ice can form on the
brake discs and pads: braking efficiency
may be reduced. Make light brake
applications to dry and defrost the brakes.
AdBlue® (BlueHDi engines)
To respect the environment and ensure
compliance with the Euro 6 standard, without
adversely affecting the per formance or fuel
consumption of Diesel engines, CITROËN
has taken the decision to equip its vehicles
with a
system that associates SCR (Selective
Catalytic Reduction) with a
Diesel particle filter
(DPF) for the treatment of exhaust gases.
SCR system
Using a fluid called AdBlue® that contains
urea, a catalytic converter turns up to 85%
of nitrogen oxides (NOx) into nitrogen and
water, which are harmless to health and the
environment.
The AdBlue
® is contained in
a
special tank holding about
17


litres.
Its capacity allows a

driving range of around
12,500

miles (20,000

km). An alert system is
triggered automatically once the reser ve level
is reached: you can then drive for a
further
1,500

miles (2,400

km) before the tank is
e m pt y. Once the AdBlue
® tank is empty, a system
required by regulations prevents starting
of the engine.
If the SCR system is defective, the level of
emissions from your vehicle will no longer
meet the Euro 6

standard: your vehicle
becomes polluting.
In the event of a

confirmed fault with the
SCR system, you must go to a
CITROËN
dealer or a

qualified workshop as soon
as possible: after a
running distance of
685

miles (1,100

km), a system will be
triggered automatically to prevent engine
starting.
In either case, a range indicator gives you
the distance you can travel before the
vehicle is immobilised.
For more information on the Warning and
indicator lamps and associated alerts,
refer to the corresponding section.
Freezing of the AdBlue
®
AdBlue® freezes at temperatures below
around -11°C.
The SCR system includes a
heater for the
AdBlue
® tank, allowing you to continue
driving in very cold conditions.
Practical information

211
F Check that the compressor switch is at the "O " position.
F

U
ncoil fully the electric cable, stowed under
the compressor.
Only the 12
V socket located at the front
of the vehicle can be used to power the
compressor. F

S
tart 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 a pressure of 2 bars is not reached after
7 minutes, this indicates that the tyre is
not repairable; contact a CITROËN dealer
or a

qualified workshop for assistance.
F
O
nce the correct pressure is reached, put
the switch to the " O" position.
F

R
emove the kit then stow it.
Do not drive more than 125
miles (200 km)
with the repaired tyre; see a
CITROËN
dealer or a
qualified workshop to change
the tyre.
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.
F

U
ncoil the pipe stowed under the
compressor.
F
S
crew the pipe onto the valve and tighten
f i r m l y.
F
C
onnect the compressor's electric plug to
the vehicle's 12
V socket.
F

S
witch on the ignition.
The tyre inflation pressures are given on
this label.
Spare wheel
Scan the QR code on page 3 to view
e xplanatory videos.
Access to tooling
Procedure for changing a wheel with
a damaged or punctured tyre for the spare
wheel using the tools provided with the vehicle.
The tools are installed in the boot under the
f l o o r.
Remove the boot carpet to access them.
8
In the event of a breakdown

212
List of tools
(Depending on equipment.)4.
Wheel bolt cover removal tool.
Removes the wheel bolt covers on alloy
wheels.
5. Socket for the security bolts (located in
the glove box).
For adapting the wheelbrace to the special
"security" bolts.
6. Towing eye and tool to open the front
protective cover.
1. Wheelbrace.
For removing the wheel trim and the wheel
fastening bolts.
2. Chock to immobilise the vehicle (except
versions with manual gearbox).
3. Jack with integrated handle.
Used to raise the vehicle. For more information on To w i n g
, refer to the
corresponding section.
All of these tools are specific to your
vehicle and may vary according to the
level of equipment.
Do not use them for any other purposes.
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 this vehicle.
If the vehicle does not have its original jack,
contact a
CITROËN dealer or a qualified
workshop to obtain the correct jack for it.
The jack meets European standards,
as defined in the Machinery Directive
2006/42/EC.
The jack does not require any
maintenance.
Access to the spare wheel
The spare wheel is located in the boot, under
t h e f l o o r.
Taking out the wheel
F Loosen the central nut.
F R emove the fastening device (nut and bolt).
F

R
aise the spare wheel towards you from the
r e a r.
F

T
ake the wheel out of the boot.
In the event of a breakdown

214
List of tools
(Depending on version. The full set of tools is
supplied with the spare wheel.)
1.Wheelbrace.
For removing the wheel trim and removing
the wheel bolts.
2. Chock to immobilise the vehicle (except
for versions with manual gearbox).
3. Jack with integrated handle.
Used to raise the vehicle. 4.
Wheel bolt cover removal tool.
Removes the wheel bolt covers on alloy
wheels.
5. Socket for wheel security bolts (stored in
the glove box).
For adapting the wheelbrace to the special
"security" bolts.
6. Wheelbrace extension.
For slackening/tightening the spare wheel
winch cable carrier nut.
7. Towing eye and tool to open the front
protective cover.
For more information on To w i n g , refer to the
corresponding section.
All of these tools are specific to your
vehicle and may vary according to the
level of equipment.
Do not use them for any other purposes.
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 this vehicle.
If the vehicle does not have its original jack,
contact a
CITROËN dealer or a qualified
workshop to obtain the correct jack for it.
The jack meets European standards,
as defined in the Machinery Directive
2006/42/EC.
The jack does not require any
maintenance.
Wheel with wheel trim
When removing the wheel , first remove the
trim using the wheelbrace 1 by pulling at the
valve aperture.
When refitting the wheel , refit the trim
starting by placing its notch facing the valve
and press around its edge with the palm of your
hand.
Access to the spare wheel
(Depending on version.)
Only a "space-saver" type spare wheel
may be fixed underneath the vehicle.
The spare wheel is supported by a
winch
carrier system underneath the vehicle.
In the event of a breakdown

222
Main beam headlamps (halogen model)
Direction indicators
F Remove the protective plastic cover by pulling the tab.
F

P
ush the connector.
F

P
ull the bulb to change it.
To reassemble, proceed in reverse order. Quicker flashing of the direction indicator
light (left or right) indicates that one of
the bulbs on the corresponding side has
failed.
The direction indicator bulb is located below
the headlamp.
F
T
urn the bulb holder anti-clockwise
a quarter of a turn.
F
R
emove the bulb holder.
F
C
hange the faulty bulb.
To reassemble, proceed in reverse order.
Direction indicators (light-
emitting diodes – LEDs)
For the replacement of this type of lamp,
contact a CITROËN dealer or a qualified
workshop.
Front foglamps
F Unclip the finisher by pulling at the top.
F R emove the two screws to remove the unit.
F

T
urn the bulb holder a quarter of a turn.
F

R
emove the bulb holder.
F

C
hange the faulty bulb.
To reassemble, proceed in reverse order,
pressing on the finisher to refit it.
Door mirror spotlamps
You should contact a CITROËN dealer or
a qualified workshop for the replacement of the
light-emitting diode – LED.
Integrated direction indicator
side repeaters
You should contact a CITROËN dealer or
a qualified workshop for the replacement of
these bulbs.
In the event of a breakdown

227
To remove or fit a fuse, it is essential to:
F u se the special tweezers to extract the fuse
from its housing and check the condition of
its filament,
F

a
lways replace the failed fuse with a fuse
of the same rating (same colour); using
a
different rating could cause faults (risk of
f i r e).
If the fuse fails again soon after replacement,
have the vehicle's electrical system checked by
a
CITROËN dealer or a qualified workshop.
Replacing a
fuse not shown in the tables
may cause a


serious malfunction of your
vehicle. Contact a
CITROËN dealer or
a


qualified workshop.Installing electrical accessories
Your vehicle's electrical system is
designed to operate with standard or
optional equipment.
Before installing other electrical
equipment or accessories on your vehicle,
contact a CITROËN dealer or a qualified
workshop.
CITROËN will not accept responsibility for
the cost incurred in repairing your vehicle
or for rectifying malfunctions resulting
from the installation of accessories
not supplied and not recommended by
CITROËN and not installed in accordance
with its instructions, in particular when
the combined consumption of all of the
additional equipment connected exceeds
10


milliamperes.
Fuses in the dashboard
The two fuseboxes are located in the lower
dashboard (left-hand side).
Access to the fuses
Good Failed
Tw e e z e r s
8
In the event of a breakdown

234
Reconnecting the (+) terminalDo not force the lever as locking will not
be possible if the clamp is not positioned
correctly; start the procedure again.
Following reconnection of the
battery
Following reconnection of the battery, switch on
the ignition and wait 1 minute before starting to
permit initialisation of the electronic systems. If
minor problems nevertheless persist following
this operation, contact a
CITROËN dealer or
a


qualified workshop. Versions equipped with Stop & Start are
fitted with a
12 V lead-acid battery of
specific technology and specification.
Its replacement should be carried out
only by a CITROËN dealer or a qualified
workshop.
The Stop & Start system may not be
operational during the trip following the
first engine start.
In this case, the system will only be
available again after a

continuous
period of immobilisation of the vehicle,
a period which depends on the exterior
temperature and the state of charge of the
battery (up to about 8 hours).
F
Ra
ise the lever A fully.
F
R
efit the open clamp B on the (+)
terminal.
F
P
ush the clamp B fully down.
F
L
ower the lever A to lock the clamp B
.Referring to the corresponding section, you
must yourself reinitialise (depending on
version):
-
t
he remote control key,
-
t
he electric blind(s),
- etc.
To w i n g
Procedure for having your vehicle towed or for
towing another vehicle using the towing eye.
Access to tooling
The towing eye is installed in the boot under
t h e f l o o r.
The tool for opening the front protective cover
is fixed to the towing eye.
To access it:
F

o
pen the boot,
F

l
ift the floor and remove it,
F

r
emove the towing eye from the holder.
In the event of a breakdown

236
Running out of fuel
(Diesel)
On vehicles fitted with Diesel engines, the fuel
system must be primed if you run out of fuel.
For all versions other than BlueHDi, refer to the
corresponding engine compartment view.For more information on Diesel misfuel
prevention , refer to the corresponding
section.
If the engine does not start first time, do
not keep trying but start the procedure
again from the beginning.
BlueHDi 100 S&S, BlueHDi
115/120 S&S and BlueHDi
135/150


S&S engines
F Fill the fuel tank with at least 5 litres of
Diesel.
F

S
witch on the ignition (without starting the
engine).
F

W
ait around 6 seconds and switch off the
ignition.
F

R
epeat the operation 10

times.
F

O
perate the starter to run the engine.
BlueHDi 130 S&S and
B lueHDi 160 S&S engines
F Fill the fuel tank with at least 5 litres of
Diesel.
F

S
witch on the ignition (without starting the
engine).
F

W
ait around 1 minute and switch off the
ignition.
F

O
perate the starter to run the engine.
If the engine does not start, repeat the
procedure.
Other engines
F Fill the fuel tank with at least 5 litres of
Diesel.
F

O
pen the bonnet.
F

I
f necessary, unclip the cover to access the
priming pump.
F

O
perate the priming pump
repeatedly until resistance is felt
(there may be resistance on the
f i r st p r e s s). F

P
ut the cover back in place and clip it in.
F
C
lose the bonnet.
F
O
perate the starter to start the engine (if the
engine does not start at the first attempt,
wait around 15
seconds before trying
again).
F

I
f the engine does not start after a few
attempts, operate the priming pump again
then start the engine.
In the event of a breakdown