fuel pressure MASERATI GRANTURISMO CONVERTIBLE 2020 Owners Manual

•Mounting posts must be properly
installed, if not equipped from the
factory. Failure to properly follow
floor mat installation or mounting
can cause interference with the
brake pedal and accelerator pedal
operation causing loss of control of
the vehicle.
Tires
• Examine tires for excessive tread
wear and uneven wear patterns.
• Check for stones, nails, glass, or
other objects lodged in the tread or
sidewall.
• Inspect the tread for cuts and cracks.
• Inspect sidewalls for cuts, cracks and
bulges.
• Check the wheel nuts for tightness.
• Check the tires (see “Tire Inflation
Pressure” chapter in section
“Features and Specifications”) for
proper cold inflation pressure.
Lights and Indicator Lights
• Have someone observe the
operation of exterior lights while
you operate the controls (see
“Lights” chapter in section
“Understanding the Vehicle”).
• Check turn signal and high beam
indicator lights on the instrumentcluster (see “Instrument Cluster”
chapter in section “Dashboard
Instruments and Controls”).
Door Latches
• Check for positive closing, latching,
and locking of doors and trunk lid
(see chapter “Doors” and “Open and
Close the Trunk Lid” in this section).
Fluid Leaks
• Check area under vehicle after
overnight parking for recent fluid
leaks (oil, fuel, etc.).
• If gasoline fumes are detected or
fluid leaks are suspected, contact an
Authorized Maserati Dealer.
WARNING!
California Proposition 65
Operating, servicing and maintaining
a passenger vehicle or off-road vehicle
can expose you to chemicals including
such as, engine exhaust, carbon
monoxide, phthalates and lead, that
which are know to the State of
California to cause cancer and birth
defects or other reproductive harm. To
minimize exposure, avoid breathing
exhaust, do not idle the engine except
as necessary, service your vehicle in a
well-ventilated area and wear glovesor wash your hands frequently when
servicing your vehicle. For more
information go to:
www.P65Warnings.ca.gov/passenger-
vehicle
Before Starting
2
67

CAUTION!
• When the key on the key in the
ignition switch is in theMAR (ON)
position and if the indicator light
does not switch on or if it switches
on while driving, contact an
Authorized Maserati Dealeras soon
as possible.
• Prolonged driving with the MIL on
could cause damage to the engine
control system. It also could affect
fuel economy and drivability. If the
MIL is flashing, severe catalytic
converter damage and power loss
will soon occur. Immediate service is
required.
Parking Lights Indicator
With the key removed from
the ignition switch, it indicates
that the parking lights are on.
Transmission Failure Warning Light (*)
Depending on the message
displayed it signals:
• a transmission failure. If the
failure permits, slowly drive
to the nearestAuthorized
Maserati Dealer;• a too high temperature of the
transmission oil. In this case, slow
down until the temperature goes
down to the normal values for use
(the warning light goes off).
For further information see chapter
“Automatic Transmission” in section
“Driving”.
CAUTION!
Continuous driving with the
transmission temperature warning
light illuminated will eventually cause
severe transmission damage or failure.
WARNING!
If the transmission temperature
warning light is illuminated and you
continue operating the vehicle, in
some circumstances you could cause
the fluid to boil over, come in contact
with hot engine or exhaust
components and cause a fire.
High Beam Indicator
This indicator lights up when
the high beams are switched
on or when blinking.Low Oil Pressure Warning Light (*)
Under normal conditions, the
warning light illuminates
when the key in the ignition
switch is turned toMAR (ON)
position and goes off as soon as the
engine is started.
If the warning light stays or turns on
while driving, the engine oil pressure is
too low. The warning light is combined
with a displayed message. In this case,
turn the engine off immediately and
carry out the necessary checks.
Do not operate the vehicle until the
problem has been solved. This light
does not indicate the oil level. The
engine oil level must be checked with
the dipstick located under the hood
(see “Maintenance Procedures” in
section “Maintenance and Care”).
If the problem persists, contact an
Authorized Maserati Dealer.
Headlight On Indicator
This indicator will illuminate
when the position lights or
headlights are turned on.
For further details, see
“Lights” in section “Understanding the
Vehicle”.
Dashboard Instruments and Controls
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120

“+“ and “–” Buttons
By means of the “+ “ and “–” buttons,
the user can adjust the instrument
cluster brightness.
When a screen page is viewed, these
buttons can be used to select the
available options (see paragraph "TFT
Display: Screen Pages" in this chapter).
TFT Display: Screen Pages
Trip Screen Page
The Trip screen page is recalled by
pressing the “MODE” button. Each
Trip screen page “A” or “B” is timed,
i.e. it is displayed for a maximum of 10
seconds, after which the screen page
previously active is displayed once
again.
Before the 10 second timing has
elapsed, pressing the “MODE” button
briefly (less than 2 seconds) will reset
the trip information relating to the
flashing odometer “A” or “B”.
When the “Trip A” or “Trip B” feature
is active, the following information is
viewed on the display:
• traveled distance (shown in the
lower right area);
• average fuel consumption (Avg.
cons.)
• average traveling speed (Avg.
speed);• trip time;
• fuel range (Range);
The unit for this data can be adjusted
by the user from the MTC+ Settings
menu.
NOTE:
Trip and Service information can be
viewed by accessing the “Trip” menu
on the MTC+ screen (see “On Board
Computer Trip (Trip)” in section
“Driving”).
Tire Pressure Screen Page
If the vehicle is equipped with the Tire
Pressure Monitoring System (TPMS), by
pressing the "MODE" button the user
will display information about the tire
pressure.
This screen page is displayed for 10
seconds and, in normal conditions
(calibrated system and no faults), it
will appear as shown in the picture.In addition, the system acknowledges
the following conditions:
• low pressure or puncture in one or
more tires;
• system not calibrated;
• system failure.
For further details, see “Tire Pressure
Monitoring System - TPMS” in section
“Driving”.
TPMS Calibration Page
Select the “TPMS CALIBRATION"
screen page by pressing the "MODE"
button to calibrate the system.
This operation is necessary after
replacement or reversal of one or
more tires: in these cases the
warning light will illuminate on
the instrument cluster and the display
will show the message warning the
driver to calibrate the system.
Dashboard Instruments and Controls
4
125

5 – Driving
Normal Starting of the Engine............................. 158
Automatic Transmission.................................. 160
Onboard Computer (Trip)................................ 167
Drive Mode........................................... 169
Parking Brake......................................... 174
Parking.............................................. 176
Brake and Stability Control System......................... 177
Using the Brakes....................................... 181
Use of the Engine...................................... 183
Cruise Control (CC)...................................... 185
Tires - General Information............................... 187
Tire Pressure Monitoring System - TPMS...................... 194
Fuel Requirements...................................... 199
Refueling............................................. 202
Driving Conditions...................................... 204
Pollution Control Devices................................. 207
157

WARNING!
•Improperly inflated tires can be
dangerous.
•Under-inflation increases tire flexing
and can result in tire overheating.
•Over-inflation reduces a tire's ability
to cushion shock. Objects on the
road and potholes can cause
damage that results in tire failure.
•Over-inflated or under-inflated tires
can affect vehicle handling and can
fail suddenly, resulting in loss of
vehicle control.
•Unequal tire pressures can cause
steering problems.
•Unequal tire pressures from one side
of the vehicle to the other can cause
the vehicle to drift to the right or
left.
•Always drive with each tire inflated
to the recommended cold tire
inflation pressure.
Economy
Improper inflation pressures may
cause uneven wear patterns to
develop across the tire tread. These
abnormal wear patterns will reduce
tread life resulting in a need for
earlier tire replacement. Under-inflation also increases tire rolling
resistance resulting in higher fuel
consumption.
Ride comfort and vehicle stability
Proper tire inflation contributes to a
comfortable ride. Over-inflation
produces a jarring and uncomfortable
ride.
Tire Pressure Checkup
The proper cold tire inflation pressure
is indicated on the driver's side rear
door pillar and on the table “Tire
Inflation Pressure” in section
“Features and Specifications”.
Inflation pressure specified on the
table always refers to “cold tire
inflation pressure”. Cold tire inflation
pressure is defined as the tire pressure
after the vehicle has not been driven
for at least three hours, or driven less
than 1 mi (1,6 km) after a three hour
period.
Check tire pressures more often in
case of significant outside
temperature changes, as tire pressure
varies according to temperature
changes.
The pressure should be checked and if
necessary adjusted; tire wear and
overall conditions should also be
checked monthly. Tire pressureschange by approximately 1 PSI (0,07
bar) per 12°F (7°C) of air temperature
change. Keep this in mind when
checking tire pressure inside a garage,
especially in winter.
Example: If garage temperature = 68°F
(20°C) and the outside temperature =
32°F (0°C) then the cold tire inflation
pressure should be increased by 3 PSI
(0,21 bar) for every 12°F (7°C) for this
outside temperature condition.
Tire pressure may increase from 2 to 6
PSI (0,13 to 0,4 bar) during operation.
DO NOT reduce this normal pressure
build-up or your tire pressure will be
too low. After inspecting or adjusting
the tire pressure, always reinstall the
valve stem cap. This will prevent
moisture and dirt from entering the
valve stem, which could damage the
valve stem and the TPMS sensor
connected to it.
Tread Wear Indicators
Tread wear indicators are in the
original equipment tires to help you
determine when your tires should be
replaced.
These indicators are molded into the
bottom of the tread grooves.
When the tread is worn to one of the
tread wear indicators, the tire should
be replaced.
Driving
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191

NOTE:
TheAuthorized Maserati Dealercan
provide you with all information about
the Maserati Snow Chains, available in
the "Genuine Accessories" range.Tire Pressure Monitoring
System - TPMS
Guidelines
Each tire (including the spare tire, if
provided) should be checked monthly.
Tires should be checked when cold and
inflated to the inflation pressure
recommended by the vehicle
manufacturer indicated on tire
inflation pressure label (applied on the
driver's rear door pillar) and in “Tire
Inflation Pressure” of section “Features
and Specifications”.
If your vehicle has tires of a different
size than the size indicated on the
vehicle placard or tire inflation
pressure label, you should determine
the proper tire inflation pressure for
those tires.
As an added safety feature,
your vehicle has been
equipped with a tire pressure
monitoring system (TPMS) that
illuminates a low tire pressure telltale
when one or more of your tires is
significantly under-inflated.
Accordingly, when the low tire
pressure telltale illuminates, you
should stop and check your tires as
soon as possible, and inflate them to
the proper pressure. Driving on asignificantly under-inflated tire causes
the tire to overheat and can lead to
tire failure. Under-inflation also
reduces fuel efficiency and tire tread
life, and may affect the vehicle’s
handling and stopping ability.
Please note that the TPMS is not a
substitute for proper tire maintenance,
and it is the driver’s responsibility to
maintain correct tire pressure, even if
under-inflation has not reached the
level to trigger illumination of the
TPMS low tire pressure telltale.
Your vehicle has also been equipped
with a TPMS malfunction indicator to
indicate when the system is not
operating properly.
The TPMS malfunction indicator is
combined with the low tire pressure
telltale. When the system detects a
malfunction, the telltale will flash for
approximately one minute and then
remain continuously illuminated. This
sequence will continue upon
subsequent vehicle start-ups as long as
the malfunction exists. When the
malfunction indicator is illuminated,
the system may not be able to detect
or signal low tire pressure as intended.
TPMS malfunctions may occur for a
variety of reasons, including the
installation of replacement or
alternate tires or wheels on the vehicle
Driving
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(Continued)
style. Aftermarket wheels can cause
sensor damage. Do not use
aftermarket tire sealants or balance
beads, as damage to the sensors may
result.
• The system can temporarily
experience radio-electric interference
emitted by devices using similar
frequencies.
• After inspecting or adjusting the tire
pressure, always reinstall the valve
stem cap. This will prevent moisture
and dirt from entering the valve
stem and damage the TPMS internal
sensor.
NOTE:
•Driving on a significantly
underinflated tire causes the tire to
overheat and may lead to tire failure.
Under-inflation also reduces fuel
efficiency and tire tread life, and may
affect the vehicle’s handling and
stopping ability.
•The TPMS is not a substitute for
proper tire maintenance, and it is the
driver’s responsibility to maintain
correct tire pressure using an
accurate tire pressure gage, even if
under-inflation has not reached thelevel to trigger illumination of the
TPMS light
.
•Seasonal temperature changes will
affect tire pressure, and the TPMS
will monitor the actual tire pressure
in the tire.
Viewing Messages on the
Display
By pressing repeatedly the “MODE”
button of the control panel on left
side of the steering column, the user
can access the information page that
shows the pressure values of each tire
(“Tire Pressure” screen page: see
paragraph "TFT Display: Screen Pages"
in chapter "Instrument Cluster" of
section "Dashboard Instruments and
Controls").
If system faults or low pressure is
detected on a not indentified tire,"Check Tire Pressure" or "TPMS
Malfunction" pop-up message will be
displayed for 10 seconds. The
amber warning light will
permanently illuminate on the right
side of the instrument cluster display.
With a malfunction detected, the "Tire
Pressure" screen page will not be
available while will be available the
calibration screen page.
The “Tire Pressure” screen page
becomes available again, until the
malfunction is corrected.
Low Tire Pressure Conditions
The signal transmitted by the ECU
activates messages and symbols on the
TFT display with two priority levels
corresponding to the following
thresholds:
• Soft Warning: if the pressure is 10%
lower than the rated pressure;
• Hard Warning: if the pressure is 17%
lower than the rated pressure.
The system refers to the rated pressure
acquired after calibration.
The two alarm thresholds for
monitoring the tire pressure
respectively activate the following
alerts:
• “Check tire pressure” illuminates on
the display when the pressure of one
Driving
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196

“--,--” will be displayed in the place of
the values.
NOTE:
•The system will not perform
calibration if the pressure is below 2
bar (29 psi).
•To allow the system to acquire the
sensors’s data, after the startup of
the car, if possible avoid to stop.
During this interval the TFT display
can show screen page with dashes
“--,--” in the place of the pressure
levels of each tire.
•If calibration is not completed within
10 minutes of driving the car, the
instrument cluster shows “TPMS
Malfunction” pop-up message and
“Tire Pressure” screen disappear. The
warning light remains light on.
TPMS Malfunction
Screen page shown in picture may
appear in the following cases:
• malfunction in the ECU
system/wiring;
• no signal reception by one or more
sensors due to malfunctioning,
broken or dead battery;
• ECU malfunction.The display procedure follows the
usual logic of malfunctions. Therefore,
after 30 seconds, the display will show
the screen page that was active before
the malfunction occurred.
In addition to screen page being
displayed, the
amber warning
light, which is permanently
illuminated on the instrument cluster,
will flash for 85 seconds, after which it
will remain permanently on until the
situation is corrected. The information
page that shows the pressure value for
each tire cannot be recalled.
Fuel Requirements
The engines are designed to meet all
environmental regulations and
provide excellent fuel economy and
performance when using unleaded
premium gasoline with an AKI octane
rating of 91 or above. AKI (Anti Knock
Index) is an average on the Research
Octane Number, RON, and the Motor
Octane Number, MON (RON + MON/2
gives you the AKI).
For vehicle top performance, use
unleaded premium gasoline with no
less than 93 minimum AKI octane
rating.
Poor quality gasoline can cause
problems such as hard starting,
stalling, and hesitations. If you
experience these symptoms, try
another brand of gasoline before
considering service for the vehicle at
anAuthorized Maserati Dealer.
Besides using unleaded gasoline with
the proper octane rating, gasoline
that contain detergents, anti-corrosion
and stability additives are
recommended. Using gasoline that
have these additives may help improve
fuel economy, reduce emissions, and
maintain vehicle performance.
Driving
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199

Refueling
Fuel Filler Neck Access
The fuel filler door is found on the
rear, left-hand side of the vehicle.
To open the fuel filler door, press
button on the left control panel next
to the steering wheel.
It can be operated only when the key
is removed from the ignition switch or
turned toSTOP (OFF)position.
Refill the Tank
The fuel filler neck is provided with
external cap.
• Rotate counterclockwise and remove
the fuel filler cap. The cap hermetic
seal may result in a slight pressure
increase inside the tank. Any hissing
noise while the cap is being opened
is therefore completely normal. Thecap is linked to the filler neck with a
strap, to prevent it from being lost
while refueling.
• When refueling, the cap must remain
attached to the door by means of the
hook provided.
• Insert the fuel nozzle fully into the
filler.
WARNING!
•To avoid the risk of fire, do not
approach the filler with open flames
or cigarettes!
•To avoid the risk of inhaling noxious
fumes, do not breathe close to the
fuel filler door, when opened.
•Never have any smoking materials lit
in or near the vehicle when the fuel
filler door is open or the tank is
being filled.
•Never add fuel when the engine is
running. This violates most
fire-prevention regulations and may
cause the
Malfunction Indicator
Light (MIL) to turn on (see
“Instrument Cluster” in section
“Dashboard Instruments and
Controls”).
• Fill the vehicle with fuel. Fuel tank
capacity is indicated in the
“Refillings” table in section
“Features and Specifications”.
When the fuel nozzle “clicks” or
shuts off, the fuel tank is basically
full: it is possible to further ensure
refueling by enabling the fuel nozzle
additional fuel supply until two
clicks. After the two additional clicks,
Driving
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emergency starting, only use an
auxiliary battery.
• While driving, if the engine does not
run smoothly, you may continue
driving but reducing engine
performance to a minimum; you
should then contact theAuthorized
Maserati Dealeras soon as possible.
• Never run the engine, even if only
for testing, with one or more spark
plugs disconnected.
• Do not warm up the engine letting it
idle before starting off, except in the
event that the external temperature
is very low and, even then, for no
longer than 30 seconds.
Catalytic Converter Warnings
During normal operation the catalytic
converter produces high temperatures.
Failure to comply with following rules
can create fire hazards.
• Do not park the vehicle on
flammable materials (e.g. grass, dry
leaves, pine needles, etc.).
• Do not install heat guards and do
not remove those already fitted to
the catalytic converter and to the
exhaust manifold.
• Do not spray anything on the
catalytic converter, Oxygen sensor
and exhaust manifold.In addition to the catalytic converter
system, the vehicles are equipped with
a system for controlling fuel vapor
emissions. This system, called ORVR,
has been designed to help reduce
atmospheric pollution by the
evaporation from the fuel system
during the refueling process. Also,
specific to these vehicles is the fuel
filler neck which comes equipped with
a sealed plug that is grounded to
avoid possible sparking during
re-fueling.
WARNING!
California Proposition 65
Operating, servicing and maintaining
a passenger vehicle or off-road vehicle
can expose you to chemicals including
such as, engine exhaust, carbon
monoxide, phthalates and lead, that
which are know to the State of
California to cause cancer and birth
defects or other reproductive harm. To
minimize exposure, avoid breathing
exhaust, do not idle the engine except
as necessary, service your vehicle in a
well-ventilated area and wear gloves
or wash your hands frequently when
servicing your vehicle. For more
information go to:www.P65Warnings.ca.gov/passenger-
vehicle
Other Tips
• Do not warm up the engine when
the vehicle is stationary: in these
conditions the engine heats up much
more slowly, thus increasing fuel
consumption and emissions. It is
advisable to move off slowly,
avoiding high engine rpm.
• As soon as traffic conditions and the
route permit it, use a higher gear.
• Avoid depressing the accelerator
repeatedly during stops at traffic
lights or before turning off the
engine.
• Keep your speed as regular as
possible, avoiding unnecessary
braking and acceleration, which
cause fuel wastage and strongly
increase exhaust emissions.
• Turn the engine off if the vehicle
remains stationary for a long time.
• Check the tire pressure regularly: if
the pressure is too low, fuel
consumption increases and the tires
are damaged.
• Do not transport unnecessary heavy
objects in the trunk compartment.
Driving
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