2016 Alfa Romeo Giulietta engine

Warning lights on
panelWhat it means What to do
amberGENERAL FAILURE
(for versions/markets, where provided)
The warning light switches on in the
circumstances indicated below.In these cases contact an Alfa Romeo Dealership
to have the fault fixed as soon as possible.
Dusk sensor failure
(for versions/markets, where provided)
This warning light comes on when a dusk sensor
fault is detected.
Engine oil pressure sensor failure
The warning light comes on when the engine oil
pressure sensor is faulty. The display shows the
dedicated message.
AFS adaptive lights failure
(for versions/markets, where provided)
The warning light switches on when a fault is
detected with the AFS adaptive lights (see the
“AFS adaptive lights” paragraph in the "Knowing
your vehicle" section). The display shows the
dedicated message.
Anti-pinch system failure
The warning light comes on when a fault is
detected in the electric window anti-pinch
system. The display shows the dedicated
message.
110
KNOWING THE INSTRUMENT PANEL

Warning lights on
panelWhat it means What to do
amberINJECTION/EOBD SYSTEM FAILURE
In normal conditions, when the ignition key is turned to
MAR-ON the warning light switches on, but it should
switch off as soon as the engine is started. The operation
of
warning light may be checked by the traffic police
using specific devices. Comply with the laws and
regulations of the country where you are driving.
13)
If the warning light remains on or switches on whilst
driving, it means that the injection system is not working
properly. The warning light on constantly signals a
malfunction in the supply/ignition system which could
cause high exhaust emissions, a possible loss of
performance, poor driveability and high consumption.
On some versions, the display shows the dedicated
message. The warning light goes out after the fault
disappears: the indication is stored in the system.Under these conditions, you may continue
travelling at a moderate speed without
demanding excessive effort from the
engine. Prolonged use of the car with the
warning light on constantly may cause
damage.
Contact an Alfa Romeo Dealership as
soon as possible.
Petrol engines only
If the warning light flashes, it means that the catalytic
converter may be damaged.In this case, release the accelerator pedal
to lower the speed of the engine until the
warning light stops flashing. Continue the
journey at moderate speed, trying to avoid
driving conditions that may cause further
flashing and contact an Alfa Romeo
Dealership as soon as possible.
113

Warning lights on
panelWhat it means What to do
amberGLOW PLUG HEATING/GLOW PLUG
HEATING FAILURE (diesel versions)
This warning light switches on when the key is
turned to MAR-ON. It will switch off as soon as
the heater plugs have reached a preset
temperature. The engine can be started as soon
as the warning light switches off.
IMPORTANT In mild or high temperature
conditions, the warning light comes on for a very
short time only.
Glow plug preheating failure
The warning light will flash (a message will appear
on the display, on some versions) to indicate a
fault in the glow plugs preheating system.Contact an Alfa Romeo Dealership as soon as
possible.
amberWATER IN DIESEL FILTER (diesel versions)
The warning light remains on constantly when
driving (together with a message in the display),
to indicate the presence of water in the diesel
filter.
14)
WARNING
68) Failure of thewarning light is indicated by thewarning light switching on. In addition, the airbag system
automatically disables the passenger side airbag. Before proceeding, contact an Alfa Romeo Dealership to have the
system checked immediately.
114
KNOWING THE INSTRUMENT PANEL

IMPORTANT
13) If, turning the ignition key to MAR-ON, thewarning light does not turn on or if it turns on steadily or flashing
when travelling (on certain versions together with the message on the display), contact an Alfa Romeo Dealership
as soon as possible.
IMPORTANT
14) The presence of water in the fuel supply system circuit may cause severe damage to the injection system and
irregular engine operation. If the
warning light comes on in the instrument panel (together with a message in the
display) contact an Alfa Romeo Dealership as soon as possible to bleed the system. If the above indications come
on immediately after refuelling, water has probably been poured into the tank: turn the engine off immediately and
contact an Alfa Romeo Dealership.
115

Warning lights on
panelWhat it means What to do
amberDPF CLEANING (particulate trap) in progress
(diesel versions with DPF only)
When the key is turned to MAR-ON, the warning
light switches on but it should switch off after a
few seconds. The warning light switches on
constantly to indicate that the DPF system needs
to eliminate the trapped pollutants (particulate)
through the regeneration process.
The warning light does not come on during every
DPF regeneration, but only when driving
conditions require that the driver is notified. To
turn off the warning light, keep the car in motion
until the regeneration process is over.
On average, the process lasts 15 minutes.
Optimal conditions for completing the process are
achieved by travelling at 60 km/h with engine
speed above 2000 rpm.
When this warning light switches on, it does not
indicate a car failure and thus it should not be
taken to a workshop. On some versions, together
with the warning light switching on, the display
shows a dedicated message.
69)
116
KNOWING THE INSTRUMENT PANEL
WARNING
69) Always drive at a speed appropriate to the traffic conditions, the weather and traffic regulations. The engine can be
stopped even if the DPF warning light is on: however, repeated interruptions of the regeneration process could cause
premature deterioration of the engine oil. For this reason, always wait until the warning light switches off before
stopping the engine as described above. It is not advisable to complete DPF regeneration with the car stationary.

Warning lights on
panelWhat it means What to do
amberELECTRONIC STABILITY CONTROL (ESC)
SYSTEM
When the ignition key is turned to MAR-ON, the
warning light switches on, but should switch off
as soon as the engine is started.
Intervention by the system is indicated by the
flashing of the warning light: it indicates that the
car is in critical stability and grip conditions.
If the warning light (or symbol on the display)
does not switch off, or if it stays on with the
engine running, this means that an ESC system
fault is present.
On some versions, the display shows the
dedicated message.Contact an Alfa Romeo Dealership as soon as
possible to have the problem diagnosed and
resolved.
119

Warning lights on
panelWhat it means What to do
amberELECTRONIC STABILITY CONTROL (ESC)
SYSTEM
ASR system failure
When the ignition key is turned to MAR-ON, the
warning light switches on, but should switch off
as soon as the engine is started.
The warning light will flash while driving to indicate
that the ASR system is intervening.
If the warning light (or symbol on the display)
does not switch off, or if it stays on with the
engine running, this means that an ASR system
malfunction has been detected.
On some versions, the display shows the
dedicated message.In this case, contact an Alfa Romeo Dealership as
soon as possible.
Hill Holder system failure
The warning light switches on together with the
symbol and corresponding message on the
display to indicate Hill Holder system failure.In this case, contact an Alfa Romeo Dealership as
soon as possible.
120
KNOWING THE INSTRUMENT PANEL

Driver
If the driver is the only occupant and
their seat belt is not fastened, when 20
km/h is exceeded or when travelling
at a speed between 10 and 20 km/h for
longer than 5 seconds, an acoustic
signal cycle will be started for the front
seats (continuous acoustic signal for
6 seconds followed by a 90 second
beep). The warning light will flash.
The warning lights will stay on
constantly at the end of the cycle until
the engine is stopped. The acoustic
signal will be interrupted immediately
when the driver’s seat belt is fastened
and the warning light will turn green.
The reminder cycle (acoustic and visual)
will be repeated as described above
and the red warning light will flash if the
seat belt is unfastened again while
travelling.
Passenger
A similar situation applies to the front
passenger, with the difference that the
warning light turns green and the
indication is also interrupted when the
passenger leaves the car.If both front seat belts are unfastened a
few seconds apart while the car is
travelling, the acoustic signal will refer
to the most recent event and the two
warning lights will proceed with the
visual indication independently.
REAR SEATS (warning
light no. 2, no. 3 and no.
4)
For the rear seats, the reminder cycle is
only activated when any seat belt is
unfastened (flashing red).
In this condition, the warning light for
the seat belt which has been
unfastened will flash (red) for
approximately 30 seconds. An acoustic
signal is also emitted.
The visual indication (flashing red) will
start and stop independently for each
warning light if several seat belts are
unfastened. The warning light will
become green when the relevant seat
belt is fastened again.
The rear seat warning lights will switch
off, regardless of the state of the belt
(red or green) approximately 30
seconds after the last signal.IMPORTANT
The warning lights are all off if all seat
belts (front and rear) are already
fastened when the ignition key is turned
to MAR.
All warning lights switch on when at
least one belt changes from fastened to
unfastened or vice versa.
130
SAFETY
FRONT SEATS (warning
light no. 1 = driver and
no. 5 = passenger)