2020 FIAT 500 fuel pressure

refit the cover and retighten the
fastening devices.
LPG TANK
28)
The car has a (pressurised) tank A fig.
43 for accumulating LPG in a liquid
state. It is ring-shaped and located in
the spare wheel compartment with
suitable protection.
The LPG in the tank is always in both a
liquid and gaseous state, in physical
balance between the two stages.The liquid, which cannot be
compressed, dilates by around 0.25%
for each increase in temperature of
one degree. For this reason a suitable
free gap allowing the increase in volume
of the liquid for all expected
temperature increases is guaranteed
(e.g. car parked in the sunshine in
summer), without compromising tank
integrity.
A safety valve has been fitted to this
end, to automatically limit the refilling of
the tank (during refuelling) to a
maximum level of 80% (liquid) of its
total capacity.
LPG tank certification
The LPG tank is certified in accordance
with the regulations in force.
In Italy, the tank has a life of 10 years
starting from the car registration date. If
the vehicle has been registered in a
country other than Italy, the duration
and the testing/inspection procedures
of the LPG tank can vary depending on
the national laws of that country. In all
case, when the time limit for your
country has expired, go to a Fiat Dealer
to have the tank replaced.
The tank identification data are printed
on the tank, under the multivalve unit:
type-approval country identification
and type-approval number;
type of gas for which it is designed
(LPG);
name of tank manufacturer;
tank commissioning pressure (30
bar);
maximum refilling percentage (80%);
tank dimensions;
rated tank capacity in litres;
tank manufacture date (month/year);
tank serial number.
LPG/PETROL SWITCH
37)
29)
It is located in the centre tunnel fig. 44
and includes:
Apetrol/LPG switch.
BLPG quantity indicator; 5 LEDs,
four green and one orange to indicate
reserve. The orange LED turns on when
only one green LED is on.
Cpetrol operating mode indicator:
orange LED next to the switchA.
This function is controlled directly by
the LPG control unit.
DLPG operating mode indicator:
green LED next to the switchA. This
function is controlled directly by the
LPG control unit.
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36
KNOWING YOUR CAR

IMPORTANT If the ignition key is turned
to MAR, all the device LEDs will stay
on for approximately 4 seconds (check
function).
Engine starting always occurs on petrol;
then, depending on the position of the
switch A fig. 44 the following occurs:
the switch A pressed on the right
side (identified by the
symbol)
indicates petrol operation with
activation of the associated amber LED
C;
switch A pressed on the left side
(identified by the symbol G) indicates
LPG operation with activation of the
associated green LED D.
Five LEDs B (one amber and four
green) on the top part of the switch
display the amount of LPG in the
cylinders.If the LPG runs out, the system
automatically switches to petrol: the
orange LED C next to the switch
comes on and the green LED D
indicating LPG operation goes off.
When the car is refuelled with LPG after
a standard start-up on petrol, the fuel
system automatically returns to LPG:
the orange LED C next to the switch
goes off and the green LED D for LPG
operation turns on.
If you specifically wish to run on petrol,
press the switch A on the right-hand
side.
The amber LED C next to the switch
will turn on to indicate that switching
has taken place (the LPG fuel system
has been entirely disabled).
The fuel supply can only be returned to
LPG by operating switch A again,
green LED D next to the switch will turn
on to indicate that switching has taken
place.
In addition, when starting at outside
temperatures below approximately
–10°C, the switching times from petrol
to LPG increase to allow the pressure
regulator/reduction unit to heat up.
IMPORTANT If switching takes place
during acceleration or pick-up, there
may be a brief drop in power.
38)
30)
WARNING
35)Note that in some countries (including
Italy) there are legal restrictions in force
for parking/garaging motor vehicles fuelled
by gas that is denser than air; LPG comes
under this category.
36)If gas is smelt, switch from LPG
operation to petrol operation and
immediately go to a Fiat Dealership to have
the vehicle checked and possible system
faults excluded.
37)Do not switch between the two
operating modes whilst starting the engine.
38)The LPG supply system is equipped
with a "consumption" function linked to the
LED display of LPG level on the switch;
this function activates only after a
consistent variation in fuel level has been
detected. It is therefore advisable to fill
up with fuel at the first LPG refuelling
to obtain a more "precise" indication of the
level.
44F0S0673
37

Warning light What it means
yellowGENERAL FAILURE INDICATION
The warning light switches on in the following circumstances. In these cases contact a Fiat Dealership to
have the problem fixed as soon as possible.
Engine oil pressure sensor failure
The warning light switches on when an engine oil pressure sensor anomaly is detected.
Fuel cut-off system intervention/failure
This warning light switches on, on some versions along with a dedicated message on the display, in the
case of fuel cut-off system activation/failure.
Exterior lights failure
The warning light switches on when an external light failure is detected.
Parking sensor failure
The warning light turns on and the dedicated message is shown on the display when a parking sensor fault
is detected.
Start&Stop system failure(versions with multifunction display)
A failure of the system is indicated by the warning light switching on. A dedicated message will appears on
the instrument panel.
Airbag warning light fault(for versions/markets where provided)
44)
The warning light blinks when a fault is detected in the warning light.
yellowSTART&STOP SYSTEM ON
(for versions/markets, where provided)
This warning light switches on with fixed light, along with a dedicated message on the display on some
versions, in the case of Start&Stop system failure.
55

WARNING
44)Warning lightwill blink to indicate possible faults of the warning light. In this case, thewarning light may not indicate a possible
problem with the airbag restraint system. Contact a Fiat Dealership immediately to have the system checked
Warning light What it means
yellowSTART&STOP SYSTEM OFF
(for versions/markets, where provided)
The deactivation of the Start&Stop system is indicated by the lighting of the warning light or the symbol on
the display along with a dedicated message on the display on some versions.
yellowiTPMS
(for versions/markets, where provided)
Tyre pressure low
The warning light switches on constantly to indicate that the tyre pressure is lower than the recommended
value, in order to guarantee long tyre life and low fuel consumption, or to indicate a slow loss of pressure.
In this way the iTPMS warns the driver that one or more tyres may be flat and probably punctured. In this
case it is advisable to restore the correct pressure value. Once the normal operating conditions of the
vehicle are restored, carry out the Tyre reset procedure.
IMPORTANT Do not continue driving with one or more flat tyres as handling may be compromised. Stop
the vehicle, avoiding sharp braking and steering.
iTPMS failure/iTPMS temporarily deactivated
The warning light flashes for about 75 seconds and then stays on constantly (along with a dedicated
message on the display) to indicate that the system is temporarily deactivated or faulty. The system goes
back to normal operation when the operating conditions allow it. If this is not the case, carry out the Tyre
reset procedure after restoring the normal operating conditions.
If the malfunction warning persists, contact a Fiat Dealership as soon as possible.
45) 46)
56
KNOWING THE INSTRUMENT PANEL

WARNING
45)If the system signals a pressure decrease on a specific tyre, it is recommended to check the pressure on all four tyres. The iTPMS does
not relieve the driver from the obligation to check the tyre pressure every month; it is not to be considered a system to replace servicing or
a safety system. Tyre pressure must be checked with tyres cold. Should it become necessary for whatever reason to check pressure with
warm tyres, do not reduce pressure even though it is higher than the prescribed value, but repeat the check when tyres are cold.
46)The iTPMS cannot indicate sudden tyre pressure drops (for example when a tyre bursts). In this case, stop the vehicle, braking with
caution and avoiding abrupt steering. The system only warns that the tyre pressure is low: it is not able to inflate them. Insufficient tyre
inflation increases fuel consumption, reduces the tread duration and may affect the capacity to drive safely.
Green warning lights
Warning light What it means
greenSIDE LIGHTS AND DIPPED BEAM HEADLIGHTS/FOLLOW ME HOME
Side lights and dipped beam headlights
The warning light switches on when the side lights or dipped headlights are turned on.
Follow Me Home
The warning light comes on, on some versions along with a dedicated message on the display, when the
"Follow me home" device is used.
greenFOG LIGHTS
The warning light comes on when the front fog lights are turned on.
greenLEFT DIRECTION INDICATOR
The warning light turns on when the direction indicator control lever is moved downwards or, together with
the right indicator, when the hazard warning light button is pressed.
57

Under special conditions (e.g. car
loaded asymmetrically on one side,
damaged or worn tyre, fitting the
space-saver spare wheel, fitting snow
chains, fitting different tyres on the
axles) the system may give false
warnings or be temporarily deactivated.
If the system is temporarily deactivated
the
warning light flashes for about
75 seconds and then is continuously
on; at the same time, the display shows
a warning message.
This warning is displayed also after the
engine has been switched off and
then on again if the correct operating
conditions are not restored.
WARNING
77)If the system signals a pressure
decrease on one or more tyres, it
is recommended to always check the
pressure on all four tyres.
78)The iTPMS does not relieve the driver
from the obligation to check the tyre
pressure every month; it is not to
be considered a system to replace
maintenance or a safety system.
79)Tyre pressure must be checked with
tyres cold. Should it become necessary for
whatever reason to check pressure with
warm tyres, do not reduce pressure even
though it is higher than the prescribed
value, but repeat the check when tyres are
cold.80)The iTPMS cannot indicate sudden tyre
pressure drops (for example when a tyre
bursts). In this case, stop the vehicle,
braking with caution and avoiding abrupt
steering.
81)The system only warns that the tyre
pressure is low: it is not able to inflate
them.
82)Insufficient tyre inflation increases fuel
consumption, reduces the tread duration
and may affect the capacity to drive safely.
OCCUPANT
PROTECTION
SYSTEMS
some of the most important safety
equipment of the vehicle comprise the
following protection systems:
seat belts;
SBR (Seat Belt Reminder) system;
head restraints;
child restraint systems;
Front airbags and side bags.
Read the information given the
following pages with the utmost care. It
is of fundamental importance that the
protection systems are used in the
correct way to guarantee the maximum
possible safety level for the driver and
the passengers.
For the description of the head restraint
adjustment see the "Head restraints"
paragraph in the "Knowing your
vehicle" chapter.
73

SUGGESTIONS FOR
DRIVING
SAVING FUEL
Below are some suggestions which
may help you save fuel and thus lower
the amount of harmful emissions
released into the atmosphere.
Vehicle maintenance
Checks and operations should be
carried out in accordance with
the "Scheduled Servicing Plan" (see the
"Maintenance and care" chapter).
Tyres
Check the tyre pressures at least once
every four weeks: if the pressure is
too low, consumption levels increase as
resistance to rolling is higher.
Unnecessary loads
Do not travel with an overloaded
luggage compartment. The weight of
the vehicle and its arrangement greatly
affect fuel consumption and stability.Roof rack/ski rack
Remove the roof rack or the ski rack
from the roof when they are not used.
These accessories lower aerodynamic
penetration and adversely affect
consumption levels. When transporting
particularly large objects, use a trailer
if possible.
Electric devices
Use electrical devices only for the
amount of time needed. The heated
rear window, windscreen wipers and
heater fan require a considerable
amount of energy; increasing
the current uptake increases fuel
consumption (by up to +25% in an
urban cycle).
Climate control module
Using the climate control system will
increase consumption: use standard
ventilation when the temperature
outside permits.
Devices for aerodynamic control
The use of non-certified devices for
aerodynamic control may adversely
affect air drag and consumption levels.DRIVING STYLE
Start
Do not warm up the engine at low or
high revs when the car is stationary;
this causes the engine to warm up
more slowly, thereby increasing fuel
consumption and emissions. It is
therefore advisable to move off
immediately, slowly, avoiding high
speeds: in this way the engine will
warm up more quickly.
Unnecessary actions
Avoid revving up when starting at traffic
lights or before stopping the engine.
The latter action, as well as double-
declutching, is unnecessary and causes
increased fuel consumption and
pollution.
Gear selection
Use a high gear when traffic and road
conditions allow it. Using a low gear for
faster acceleration will increase fuel
consumption. In the same way,
improper use of a high gear increases
consumption, emissions and engine
wear.
108
STARTING AND DRIVING

FUEL TANK CAP
Plug B fig. 84 is fitted with loss
prevention device C which secures it to
flap A.
Refuelling procedure
open lid A;
turn the ignition key anticlockwise in
the lock and unscrew the cap B. The
sealing may cause a slight pressure
increase in the tank. A little breathing
off, while slackening the cap is
absolutely normal;
when refuelling, fasten the cap to
the device inside the flap as shown
in fig. 84.LPG VERSIONS
IMPORTANT Only use LPG for motor
vehicles.
The gas filler is located next to the
petrol filler cap. It has a check valve,
located in the filler body itself.
To access the filler, open the access
flap A fig. 85 and undo the cap B.
Observe the following precautions
during the refuelling operation:stop the engine;
apply the handbrake;
turn the ignition key to STOP;
do not smoke;
hand the special adapter over to the
qualified LPG refuelling personnel.IMPORTANT Before refuelling with LPG,
the qualified personnel must make
sure that the adapter is correctly
screwed onto the filler.
IMPORTANT Depending on the country,
there are various types of adapters for
the refuelling pump. The adapter C
fig. 86 that comes with the car in a
special case 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 Look after the LPG
adapter carefully so that it does not get
damaged.
IMPORTANT Only use LPG for motor
vehicles.
84F0S0104
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86F0S0539
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STARTING AND DRIVING