engine Alfa Romeo Giulietta 2018 Service Manual

TOWING TRAILERS
IMPORTANT NOTES
The car must be provided with a
type-approved tow hook and adequate
electric system to tow caravans or
trailers. Installation must be carried out
by a specialist.
Install any specific and/or additional door
mirrors as specified by the Highway
Code.
Remember that when towing a trailer,
steep hills are harder to climb, the
braking spaces increase and overtaking
takes longer depending on the overall
weight.
Engage a low gear when driving downhill,
rather than constantly using the brake.
The weight of the trailer reduces the load
capacity of the car by the same amount.
Consider the weight at full load, including
accessories and luggage, to make sure
you do not exceed the maximum towable
weight (shown in the registration
document).
Do not exceed the speed limits specific
to each country you are driving in, in the
case of vehicles towing trailers. In any
case do not exceed 100 km/h.
INSTALLING A TOW HOOK
Contact an Alfa Romeo Dealership to
install a tow hook.
103) 104)
WARNING
103)The ABS with which the car is equipped
will not control the braking system of the
trailer. Particular caution is therefore
required on slippery roads.
104)Do not, under any circumstances,
modify the vehicle's braking system to
control the trailer breaking system. The
towing braking system must be completely
independent of the vehicle's hydraulic
system.
REFUELLING THE CAR
Stop the engine before refuelling.
PETROL ENGINES
Only use unleaded petrol 95 R.O.N.
compliant with the European
specification EN228. The petrol octane
rating (RON) must not be lower than 95.
In order to prevent damage to the
catalytic converter never introduce even
the smallest amount of leaded petrol,
even in the event of an emergency.
DIESEL ENGINES
Only use diesel fuel compliant with
European specification EN590. The use
of other products or mixtures may
damage the engine beyond repair and
consequently invalidate the warranty,
due to the damage caused.
Operation at low temperatures
If the outside temperature is very low,
diesel thickens due to the formation of
paraffin clots with consequent defective
operation of the fuel supply system.
In order to avoid these problems,
different types of Diesel are distributed
according to the season: summer type,
winter type and arctic type (cold,
mountain areas).
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STARTING AND DRIVING

If refuelling with diesel whose
specifications are not suitable for the
usage temperature, it is advisable to mix
When using or parking the car for a long
time in the mountains or cold areas, it is
advisable to refuel using locally available
fuel. In this case, it is also advisable to
keep the tank over 50% full.
LPG ENGINES
The gas filler is located next to the petrol
filler cap. It has a "non return", located in
the filler body itself.
To access the filler 1 fig. 68open the
access flap 2.Observe the following precautions during
the refuelling operation:
switch off the engine;
turn the ignition key to the STOP
position;
do not smoke;
hand the special adapter 3 over to the
qualified LPG refuelling personnel.
The adapter 3 is located in a special case.
IMPORTANT Depending on the country,
there are different types of adapters for
refuelling pumps. The adapter that comes
with the car is specifically designed for
the country in which the car is sold. If you
are in a different country, find out what
type of adapter is used there.
IMPORTANT Only use the adapter
supplied with the vehicle as it is equipped
with a dedicated fuel pre-filter.
REFUELLING CAPACITY
To ensure that you fill the tank
completely, top up twice after the first
click of the fuel supply gun. Further
top-ups could cause faults in the fuel
feeding system.
FUEL TANK CAP
The fuel cap is unlocked when the central
locking system is released and
automatically clocked when the central
locking system is applied.Opening
Press flap 2 fig. 69 to release it and
access fuel tank cap 1. Then press cap
1 and turn it anticlockwise.
105)
The cap is provided with a retention
device 4 which attaches it to the flap and
prevents it from being lost. Attach the
cap to device 3 during refuelling.
How to open the flap in an emergency
(for versions/markets, where provided)
In case of emergency, pull the cord
fig. 70 on the right-hand side of the boot
to open the fuel flap.
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PERONAS DURANCE DIESEL ART additive
in the proportions shown on the container
with the fuel. Pour the additive into the
tank before the fuel.apply the handbrake;

remove the bulb by pushing it slightly
and turning it anticlockwise (1 = reversing
light bulb; 2 = rear fog light bulb) (see
fig. 80);
refit the bulb holder assembly
positioning it correctly, fasten screw
2 and then fix it by means of the retaining
tab 1. Reconnect connector 3 and finally
replace cover 1 fig. 78.
IMPORTANT Protect the tip of the
screwdriver with a cloth to prevent
scratching when removing the cover 1.
THIRD BRAKE LIGHTS
These are LED lights and are located on
the spoiler integrated with the tailgate.
For the replacement, contact an Alfa
Romeo Dealership.
NUMBER PLATE LIGHTS
To replace the bulbs, proceed as follows:
remove the number plate light units A
fig. 81;
turn the bulb holder 2
fig. 82 anticlockwise, extract the bulb
3 and replace it;
fit the new bulb, making sure it is
properly locked, then put the number
plate light units fig. 81 back in place,
making sure they are properly locked.
REPLACING FUSES
GENERAL INFORMATION
Fuses protect the electrical system: they
intervene (blow) in the event of a failure
or improper action on the system.
Use the pliers located inside the cover of
the engine compartment fuse box to
remove the fuses (see “Engine
compartment fuse box” for how to
remove the cover).
VERSIONS WITH "ALFA TCT"
AUTOMATIC TRANSMISSION
(for versions/markets, where provided)
The Alfa TCT transmission components
are protected by specific fuses. Contact
an Alfa Romeo Dealership if a fuse needs
replacing.
FUSEBOXS
Fuses are grouped together in fuseboxes
located in the engine compartment, on
the dashboard and inside the boot.
Engine compartment junction box
This is located next to the battery fig. 84:
to access the fuses, undo screws 1
fig. 83 and remove cover 2.
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Engine compartment junction boxfig. 84
DEVICE PROTECTEDFUSE AMPERE
Headlamp washer pump power supply F09 30
HornF10 15
AC
compressorF19 7.5
Heated rear windowF20 30
Fuel pumpF21 15
Cigar lighter/power socketF85 20
12V boot power socketF86 20
IBS Battery charge status sensor for Start&Stop system F87 5
Door mirror defrostersF88 7.5
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IN AN EMERGENCY

Luggage compartment fuse boxfig. 89
DEVICE PROTECTEDFUSE AMPERE
Left front seat movementF1 15
Right front
seat movementF2 15
Electric sunroofF3 15
Front seat heatingF5 15
BOSE amplifier + SubwooferF6 20
IMPORTANT
33)Never replace a fuse with metal wires or anything else.
34)If it is necessary to wash the engine compartment, take care not to directly hit the fuse box and the window wiper motors with the water jet.
WARNING
110)If a fuse blows again, contact an Alfa Romeo Dealership.
111)Never replace a fuse with another with a higher amp rating; DANGER OF FIRE.
112)If a general protective fuse (MAXI-FUSE, MEGA-FUSE, MIDI-FUSE) blows, contact an Alfa Romeo Dealership.
113)Before replacing a fuse, make sure that the ignition device is at STOP, that the key, if mechanical, has been removed and that all devices are
switched off and/or disconnected.
114)Contact an Alfa Romeo Dealership if a safety system (airbags, brakes), transmission system (engine, gearbox) or steering system general
protection fuse blows.
113

CHANGING A WHEEL
JACK
115) 116) 117) 118) 119) 120)
Please note that:
the jack weight is 1.76 kg;
the jack requires no adjustment;
the jack cannot be repaired and in the
event of a fault it must be replaced by
another genuine one;
no tool other than its cranking device
may be fitted on the jack.
Jack maintenance:
prevent any dirt from depositing on
the "worm screw";
keep the "worm screw" lubricated;
never modify the jack.
Conditions in which not to use the jack:
temperature below -40°C
on sandy or muddy ground
on uneven ground
on steep roads
in extreme weather conditions:
thunderstorms, typhoons, hurricanes,
blizzards, storms, etc.
in direct contact with the engine or to
carry out repairs under the vehicle
on boats.
To change a wheel, proceed as follows:
stop the car in a position that is not
dangerous for oncoming traffic where
you can change the wheel safely. The
ground must be flat and sufficiently
compact;
switch off the engine, pull up the
handbrake and engage the 1stgear or
reverse. Wear the reflective safety jacket
(compulsory by law) before getting out of
the vehicle;
open the luggage compartment, lift
the mat using the tab provided;
using wrench 1 fig. 90 located in the
tool box, loosen the locking device, take
the tool box 2 and place it close to the
wheel to be replaced, then take the
space-saver wheel 3;
take the wrench 1 fig. 91 and loosen
the fixing bolts by about one turn. For
versions with alloy rims, shake the car to
facilitate detachment of the rim from the
wheel hub;
position the jack under the car, near
the wheel to be changed. On versions
where this is fitted, be careful not to
damage the plastic aerodynamic guard;
operate the device 1 fig. 92 so as to
raise the jack, until the upper part is
correctly inserted in the side member at
the point indicated by the arrow
fig. 92. The lifting points 3 are shown
in fig. 93.
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117)The vehicle's driving characteristics
will be modified with the space-saver wheel
fitted. Avoid violent acceleration and
braking, abrupt steering and fast cornering.
The overall duration of the space-saver
wheel is about 3000 km, after which the
relevant tyre must be replaced with another
one of the same type. Never install a
traditional tyre on a rim designed to be used
as a space-saver wheel. Have the wheel
repaired and refitted as soon as possible.
Using two or more space-saver wheels at the
same time is forbidden. Do not apply grease
to the bolt threads before fitting: they could
come unscrewed.
118)The jack may be used to replace
wheels only on the car that it comes with or
other cars of the same model. Never use the
jack for other purposes, such as lifting other
vehicle models. Never use it for repair
operations under the vehicle. Incorrect
positioning of the jack may cause the vehicle
to fall. Do not use the jack for loads higher
than the one shown on its label. Never install
snow chains on the space-saver wheel; if a
front tyre (driving wheel) is punctured and
you need to use snow chains, use a standard
wheel from the rear axle and install the
space-saver wheel on the rear axle. In this
way, with two normal front drive wheels, it is
possible to use snow chains.
119)Incorrectly fitting the wheel cap may
cause it to fall off when the car is in motion.
Never tamper with the inflation valve. Never
introduce tools of any kind between rim and
tyre. Regularly check the inflation pressure
of the tyres and space-saver wheel (see
chapter "Technical specifications").120)The jack is a tool developed and
designed only for changing a wheel, if a tyre
gets punctured or damaged, on the vehicle
with which it is supplied or on other vehicles
of the same model. Any other use, e.g. to jack
up other vehicle models or different things,
is strictly prohibited. Never use for
maintenance or repair activities under the
car or to exchange the summer/winter
wheels and vice versa. Never go under the
raised vehicle. Should it be necessary to
work under the vehicle, contact an Alfa
Romeo Dealership. Incorrect positioning of
the jack may cause the raised vehicle to fall:
use only in the positions indicated. Do not
use the jack for loads higher than the one
shown on its label. Never start the engine
with vehicle raised. If the vehicle is raised
more than necessary, everything can
become more unstable, with the risk of the
vehicle dropping violently. Thus, lift the
vehicle only as needed in order to access the
spare wheel.
IMPORTANT
35)When turning the jack handle make sure
that it can turn freely without scraping your
hand against the ground. The moving
components of the jack ("worm screw" and
joints) can also cause injuries: avoid touching
them. If you come into contact with
lubricating grease, clean yourself
thoroughly.
36)Contact an Alfa Romeo Dealership as
soon as possible to have the correct
tightening of the wheel bolts checked.
FIX&GO KIT
121) 122)
37)
DESCRIPTION
The Fix&Go quick tyre repair kit fig. 98 is
located in the boot, inside a dedicated
container and consists of:
one cartridge 1 containing sealant and
fitted with: transparent tube for injecting
the sealant 4 and sticker 3 with the
wording “Max. 80 km/h” to be placed in a
clearly visible position (e.g. on the
dashboard) after repairing the tyre;
one compressor 2;
one leaflet containing instructions for
using the kit;
a pair of gloves located in the hose
compartment of the cartridge 4.
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117

REPAIR PROCEDURE
Proceed as follows:
stop the car in a position that is not
dangerous for oncoming traffic where
you can carry out the procedure safely.
The ground must be flat and sufficiently
compact;
stop the engine, engage the hazard
warning lights and the parking brake;
wear the reflective safety jacket
before getting out of the car (anyway
comply with the laws in force in the
country you are driving in);
Insert the cartridge 1 containing the
sealant in the proper compartment of the
compressor 2, pressing it down hard
fig. 98. Remove the speed limit sticker
3 and apply it in a clearly visible position
fig. 99;
wear the gloves;
remove the cap from the tyre valve
and connect and firmly tighten the
transparent tube of the sealing fluid 4
fig. 98. If a 250 ml cartridge is present
the housing of the transparent tube is
provided with removable ring to facilitate
extraction. Make sure that the ON-OFF
button 5 fig. 101 is in the off position
(button not pressed);
plug the electric connector 6
fig. 100 into the 12V socket of the
vehicle and start the vehicle engine;
operate the compressor by pressing
the ON-OFF button 5 fig. 101. When the
pressure shown in the "Wheels"
paragraph in the “Technical data” chapter
or on the specific label appears on the
pressure gauge 7, stop the compressor
by pressing the ON-OFF button 5 again;
disconnect the cartridge 1 from the
compressor, by pressing the release
button 8 and lifting the cartridge
1 upwards fig. 102.
If the pressure gauge 7 fig. 101 indicates
a pressure lower than 1.8 bar / 26 psi
15 minutes after starting the
compressor, switch off the compressor,
disconnect the sealing fluid tube 4 from
the tyre valve and remove the cartridge
1 from the compressor fig. 102.
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JUMP STARTING
STARTING THE ENGINE
If the iconstays on constantly on the
instrument panel, contact the Alfa
Romeo Dealership immediately.
JUMP STARTING
If the battery is flat, start the engine
using an auxiliary battery with the same
capacity or a little higher than the flat
one.
38) 39)123)
Proceed as follows to start the vehicle:
connect the positive terminal (+)
fig. 104 of the auxiliary battery only to
the point indicated on the car battery
(writing "OK") and nowhere else;
with a second lead, connect the
negative terminal(−)oftheauxiliary
battery to an earthing point
on the
engine or the gearbox/transmission of
the car to be started;
start the engine; when the engine has
been started, remove the leads reversing
the order above.
If after a few attempts the engine does
not start, contact the Alfa Romeo
Dealership.
JUMP STARTING
(For versions with Start&Stop system)
When jump starting, never connect the
negative lead (–) of the auxiliary battery
to the negative pole 1 fig. 105 of the car
battery, but rather to an engine/gearbox
earth point.
124)
BUMP STARTING
Never, under any circumstances, jump
start the engine by pushing, towing or
coasting downhill.
IMPORTANT
38)Never connect the negative terminals of
the two batteries directly! If the auxiliary
battery is installed on another car, prevent
accidental contact between metallic parts of
the two cars.
39)Never use a fast battery-charger to
start the engine as this could damage the
electronic systems of your vehicle,
particularly the ignition and engine fuel
supply control units.
WARNING
123)This starting procedure must be
performed by expert personnel because
incorrect actions could cause electrical
discharge of considerable intensity.
Furthermore, battery fluid is poisonous and
corrosive: avoid contact with skin and eyes.
Keep naked flames and lighted cigarettes
away from the battery and do not cause
sparks.
124)Before opening the bonnet, make sure
that the engine is off and that the ignition
key is in the STOP position. Please follow the
instructions on the decal near the front
crossmember. We recommend that you
remove the key from the ignition if other
people remain in the vehicle. The vehicle
should always be left after the key has been
removed or turned to the STOP position.
During refuelling, make sure that the engine
is off (and that the ignition key is in the STOP
position).
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IN AN EMERGENCY

FUEL CUT-OFFSYSTEM
Operation
This intervenes in the case of an impact
causing:
the fuel supply cut-off with the engine
consequently switching off;
the automatic unlocking of the doors;
the switching on of the interior lights.
The intervention of the system is
indicated by a message shown on the
display.
Carefully check the vehicle for fuel leaks,
for instance in the engine compartment,
under the vehicle or near the tank area.
125)
After a collision, turn the ignition key to
STOP to prevent the battery from
running down.
To restore the correct operation of the
car, proceed as follows:
turn the ignition key to the MAR
position;
activate the right direction indicator;
deactivate the right direction
indicator;
activate the left direction indicator;
deactivate the left direction indicator;
activate the right direction indicator;
deactivate the right direction
indicator;
activate the left direction indicator;
deactivate the left direction indicator;
ignition key turned to the OFF
position;
turn the ignition key to the MAR-ON
position.
WARNING
125)If, after an impact, you smell fuel or
notice leaks from the fuel system, do not
reactivate the system to avoid the risk of
fire.
TCT - KEY REMOVAL
The ignition key can be removed only if
the gear lever is in position P (Park).
If the battery is flat and the ignition key is
engaged, the latter is locked in position.
To remove the key manually, proceed as
follows:
apply the handbrake;
dashboard fuses (to remove, insert
your hand in housing 1 fig. 106and lower
flap 2);
using the Allen key provided (see
fig. 107) unscrew the two top screws 2
fig. 108securing cover 1;
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