2021 Alfa Romeo 4C key

KNOWING THE INSTRUMENT PANEL TOOLS
36
Warning lights on panelMeaning What to do
Drive carefully and contact a dedicated
Alfa Romeo Dealership as soon as possible.
ABS FAULT
The warning light switches on when the ignition key is
turned to MAR, but it should switch off after a few
seconds.
The warning light switches on to indicate a system fault.
In this case the braking system maintains its efficiency
unaltered but without the advantage of the ABS system.
The display shows the dedicated message.
PASSENGER SIDE AIRBAG DEACTIVATED
The warning light
“comes on when the front passenger
airbag is deactivated.
With the front passenger airbag enabled, when the
ignition key is turned to MAR, the
“warning light
switches on constantly for about 4 seconds then it should
switch off.
If the warning light flashes, this indicates an airbag
warning light fault.
22)
Drive carefully and contact a dedicated Alfa Romeo
Dealership as soon as possible.

37
Warning lights on panelMeaning What to do
In this case release the accelerator pedal to lower the
engine speed until the warning light stops flashing.
Continue the journey at moderate speed, trying to avoid
driving conditions that may cause further flashing and
contact a dedicated Alfa Romeo Dealership as soon as
possible.
If the Uwarning light flashes, it means that the catalytic
converter may be damaged.
3)
Under these conditions, the vehicle can continue travelling
at moderate speed without demanding excessive effort
from the engine. Prolonged use of the car with the warning
light on constantly may cause damage.
Contact a dedicated Alfa Romeo Dealership as soon as
possible. INJECTION / EOBD SYSTEM FAILURE
In normal conditions, when the ignition key is turned to
MAR the Uwarning light switches on, but it should
switch off as soon as the engine is started.
The operation of the Uwarning light may be checked by
traffic police using appropriate equipment.
Comply with the laws and regulations of the country
where you are driving.
If the Uwarning light stays on or switches on when
driving, it means that the injection system is not working
properly; in particular, if the warning light comes on
constantly, this indicates a malfunction in the
supply/ignition system that could cause excessive
exhaust emissions, a possible loss of performance, poor
driveability and high fuel consumption.
On some versions the display shows the dedicated
message.
The Uwarning light switches off if the malfunction
disappears, but is still stored by the system.

39
Warning lights on panelMeaningWhat to do
ASR OFF WARNING LIGHT
When the ignition key is turned to MAR, the warning light
switches on, but should switch off as soon as the engine is
started.
The warning light switches on when the ASR function
of the electronic stability control (ESC) system is
deactivated (by selecting “Race” mode).
The ASR warning light goes off.
Contact a dedicated Alfa Romeo Dealership as soon as
possible to have the problem corrected.
Contact a dedicated Alfa Romeo Dealership as soon as
possible. ESC ELECTRONIC STABILITY CONTROL SYSTE
When the ignition key is turned to MAR, 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 does not switch off, or if it stays on
with the engine running, a failure was found on the ESC
system.
Hill Holder system fault
The digital warning light
*switches on and the display
shows the dedicated message, informing about Hill Start
system failure.

41
WARNING LIGHTS ON PANEL
Warning lights on panelMeaningWhat to do
LOW ENGINE OIL PRESSURE
When the key is turned to MAR, the digital warning light
switches on, but it should switch off as soon as the engine
is started. The digital warning light switches on constantly
together with the message in the display when the system
detects that the engine oil pressure is insufficient.
DETERIORATED ENGINE OIL
(where provided)
The digital warning light will turn on flashing and (on some
versions) with a specific message on the display.
The digital warning light may flash in the following ways,
depending on the versions:
– for 1 minute every two hours;
– for 3 minute cycles with the warning light off for
intervals of 5 seconds until oil is changed.
After the initial warning, each time the engine is started
up, the digital warning light will continue to flash in the
same mode, until the oil is changed. In addition to the
warning light the display will also show an associated
message (on some versions). If the digital warning light
flashes, this does not mean that the car is defective, but
simply informs the driver that it is now necessary to
change the oil as a result of regular vehicle use.
Remember that the deterioration of engine oil is
accelerated by using the car for short drives, preventing
the engine from reaching operating temperature.
4)
Contact a dedicated
Alfa Romeo Dealership as soon as possible to have the
problem corrected.
23)

KNOWING THE INSTRUMENT PANEL TOOLS
42
Warning lights on panelMeaningWhat to do
HOT ENGINE COOLANT
The digital warning light switches on when the key is
turned to MAR-ON, but it should switch off after a few
seconds. The warning light turns on when the engine is
overheated.
The associated message appears on the display.
ALTERNATOR FAULT
The digital warning light comes one with the engine
running only when an alternator fault is detected.Contact a dedicated
Alfa Romeo Dealership as soon as possible.
In normal driving conditions: stop the car, switch off the
engine and check that the water level in the reservoir is
not below the MIN mark. In this case, wait for the engine
to cool down, then slowly and carefully open the cap, top
up with coolant and check that the level is between the
MIN and MAX marks on the reservoir itself. Also check
visually for any fluid leaks.
Should the warning light turn on again at the next
start-up, contact a dedicated Alfa Romeo Dealership.
If the car is used under demanding conditions
(e.g. in high-performance driving): slow down and, if the
warning light stays on, stop the car.
Wait for 2 or 3 minutes with the engine running and
slightly accelerated to further favour the coolant
circulation. Then stop the engine.
Check that the coolant level is correct as described
above.
IMPORTANT On particularly demanding journeys, it is
advisable to keep the engine on and slightly accelerated
for a few minutes before switching it off.

43
Warning lights on panelMeaningWhat to do
TCT FAULT
The digital warning light switches on when the key is
turned to MAR-ON, but it should switch off after a few
seconds.
The digital warning light flashes (together with a message
in the display and an acoustic signal) to indicate that the
TCT is faulty.
The warning light or symbol switches on in the case of
transmission overheating, after a particularly demanding
use; engine performance is limited in this case.
DOOR OPEN
(where provided)
The digital warning light on the display switches on when
one or more doors are not properly shut. A buzzer will
sound when doors/tailgate are open and the car is moving.
BRAKE PAD WEAR
(where provided)
The digital warning light switches on when the front or
rear brake pads show signs of wear.
The associated message appears on the display.Replace the pad as soon as possible.
ALFA ROMEO CODE SYSTEM FAULT
(where provided)
The digital warning light (or symbol on the display) will
come on (on some versions, with a message on the
display) to indicate an Alfa Romeo CODE system or alarm
fault.Contact a dedicated
Alfa Romeo Dealership as soon as possible.
Contact a dedicated
Alfa Romeo Dealership as soon as possible.
If you need to start the engine in presence of a faulty
gearbox, follow the procedure shown in the
“TCT twin clutch transmission”, paragraph in the “Starting
the engine” section, “Starting and driving” chapter.

KNOWING THE INSTRUMENT PANEL TOOLS
44
Warning lights on panelMeaningWhat to do
FUEL RESERVE / LIMITED RANGE
The digital warning light switches on in the display when
there is approximately 4 - 5 litres of fuel left in the tank.
FUEL RESERVE SENSOR / LIMITED RANGE FAULT
The digital warning light switches on in the display when a
fuel reserve sensor fault is detected.
The associated message appears on the display.
CRUISE CONTROL
(where provided)
The digital warning light comes on when the key is turned
to MAR, but should go out after a few seconds if the
Cruise Control function is off.
The warning light comes on when the Cruise Control wheel
is turned to the ON position (see the “Cruise Control”
paragraph in this chapter).
The associated message appears on the display.
MIRROR DEMISTING / DEFROSTING
The digital warning lights switches on in the display when
the button located on the control panel is pressed.
Contact a dedicated
Alfa Romeo Dealership as soon as possible.
24

45
Warning lights on panelMeaningWhat to do
EXTERIOR LIGHTS FAILURE
The symbol and corresponding message appear on the
display if a fault is detected in one of the following lights:
❒ daytime running lights (DRLs)
❒ side lights
❒ dipped beam headlights
❒ direction indicators
❒ rear fog lights
❒ reversing lights
❒ number plate lights.
The failure relating to these lights could be: one or more
blown bulbs, a blown protection fuse or a break in the
electrical connection.
Check and replace the concerned fuses as shown in the
“If a fuse blows” paragraph in the “In an emergency”
chapter; if this does not solve the fault, check and replace
the concerned bulbs as described in “Replacing an exterior
bulb” in the “In an emergency” chapter.
Should this operation also fail to resolve the fault, contact
the dedicated Alfa Romeo Dealership, for a
comprehensive check of the electrical system.
SERVICE (SCHEDULED SERVICING)
The digital warning light appears automatically, together
with an associated message, with the key at MAR, starting
from 2,000 km (or equivalent distance in miles) from the
next scheduled servicing operation and shown again every
200 km (or equivalent distance in miles).Contact a dedicated Alfa Romeo Dealership.
The operations of the “Scheduled Servicing Plan” will be
performed and the message will be reset.