esp MASERATI GRANTURISMO CONVERTIBLE 2020 Repair Manual

When adding engine coolant
(antifreeze) use pure water only, such
as distilled or deionized water when
mixing the water/engine coolant
(antifreeze) solution. The use of
impure water will reduce the amount
of corrosion protection in the engine
cooling system.
• Mix a minimum solution of 50%
engine coolant (antifreeze) and
distilled water. Use higher
concentrations (do not exceed 70%)
if temperatures below -35°F (-37°C)
are forecast.
Please note that it is the owner's
responsibility to maintain the proper
level of protection against freezing
according to the temperatures
occurring in the circulation area of the
vehicle.
The coolant tank provides a quick
visual method to determine that the
coolant level is adequate. As long as
the engine operating temperature is
satisfactory, the coolant bottle only
needs to be checked once a month.
With the engine off and cold, the level
of the coolant in the tank on the right
side of the engine compartment
should be between the MIN or MAX
reference notches indicated on the
tank.• When additional engine coolant
(antifreeze) is needed to maintain
the proper level, it should be added
to the coolant bottle after removing
the cap. Do not overfill.
• Once the desired level is reached,
reassemble and firmly close cap of
the tank.
• If frequent engine coolant
(antifreeze) additions are required,
or if the level in the coolant recovery
tank does not drop when the engine
cools, the cooling system should be
pressure-tested for leaks by aService
Center
• Keep the front of the radiator and
the condenser clean.
WARNING!
•Never add engine coolant
(antifreeze) when the engine is hot.Do not loosen or remove the cap of
the engine coolant bottle to cool a
hot engine. Heat causes pressure to
build up in the cooling system. To
prevent scalding or injury, do not
remove the pressure cap while the
system is hot or under pressure.
•When adding coolant do not use a
pressure cap other than the one
specified for your vehicle. Personal
injury or engine damage may result.
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:
Maintenance and Care
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241

Fuse Replacement
Used Fuses Characteristics
When an electrical device is not
functioning, check that the
corresponding fuse is in proper
working order (intact).
AFuse intact
BFuse blown
Replace the faulty fuse with a new
one featuring the same rating, by
using appropriate forceps.The color identifies the value of the
fuses in amperes which is also
reported on them.
The vehicle is endowed with mini- and
maxi-fuses.
The table shows the match between
color and amperage of mini and maxi
fuses.
Type
Mini Fuse Maxi Fuse
Beige - 5 Yellow - 20
Brown - 7.5 Green - 30
Red - 10 Orange - 40
Blue-15 Red-50
Yellow - 20 Blue - 60
White - 25
Green - 30
CAUTION!
• Never replace a blown fuse with
anything other than a new and
suitable fuse (same rating).
• After replacing a fuse, if the fault
recurs, contact anAuthorized
Maserati Dealer.
Position of Fuses
The fuses are located in three parts of
the vehicle, namely:
• On the right hand side of the engine
compartment.
• Behind the glove compartment, to
the left of the steering wheel.
• In the trunk compartment next to
the battery.
Fuses Inside Engine
Compartment
• To access the fuses, lift the hood and
remove the covering panel.
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Periodically remove any leaves and
insects that may build up and obstruct
the inlet of external air in the air
conditioning system through the grille
present underneath the rear part of
the hood.
To access the grille, lift the hood as
described in “Open and Close the
Hood” in section “Before Starting”.
A/C Air Filter Replacement
This filter performs mechanic/
electrostatic air filtering, provided
that windows and doors are perfectly
closed.
Have your filter replaced at least once
a year at anAuthorized Maserati
Dealer, preferably at the beginning of
the summer period.
If the vehicle is mainly used in the city
traffic, on highways or dusty roads, we
recommend that you replace the
filters more frequently than prescribed
in the "Scheduled Service Plan" of this
section.
CAUTION!
Failure to replace the filter may
considerably reduce the air
conditioning and heating system
efficiency.
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
Wheels Maintenance
Tires Maintenance
CAUTION!
To obtain the best performances and
the longest mileage from the tires,
take the following precautions during
the first 310 mi (500 km):
• do not drive at the vehicle’s
maximum speed;
• drive at low speed on curves;
• avoid sudden steering;
• avoid sudden braking;
• avoid sudden acceleration;
• do not drive at high speeds for too
long.
The tires inflation pressure must
correspond to the prescribed values
(see the chapter “Tire Inflation
Pressure” in section “Features and
Specifications”) and should be
checked only when the tires have
cooled down. In fact, the pressure
increases as the tire temperature
progressively increases.
Never reduce the pressure if tires are
hot (see “Tires – General Information”
chapter in section “Driving”).
Maintenance and Care
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Insufficient tire inflating pressure can
cause tire overheating and possible
internal damage, which may even lead
to the tire destruction.
CAUTION!
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 it.
Impacts with curbs, holes, and
obstacles in the road, and prolonged
trips on rough roads can cause tire
damage which may not be visible to
the naked eye.
Check your tires regularly for any signs
of damage (e.g. scratches, cuts, cracks,
bulges, etc.). If sharp objects penetrate
the tires, they can cause structural
damage which is only visible when the
tire is removed.
In any case, any possible damage must
be inspected by an experienced tire
fitter, as it may seriously reduce the
tire life.
Remember that tires deteriorate with
time, even if used little or not at all.
Cracks in the tire tread and sides,
alongside possible bulging, are a sign
of deterioration.
WARNING!
•Check the inflating pressure of the
tires when cold, at least every two
weeks and before long trips.
•Have the old tires inspected by an
experienced technician, to make sure
they can still be used safely. If the
same tire has been on your vehicle
for 4 or 5 years, have it inspected
anyway by an experienced
technician.
•Never fit tires of uncertain origin.
•“Directional” tires have an arrow on
their side showing the rolling
direction. To keep the best
performance when replacing a tire,
make sure that the rolling direction
corresponds to the one shown by
the arrow.
•During the tire life, the rolling
direction used for the first fitting
shall always be observed, also in
case of “nondirectional” tires.
•Check the depth of the tire tread at
regular intervals. The minimum
allowed value is 0.06 in (1,6 mm) at
that point the wear indicators on the
tire will be visible (see “Tires –
General Information” in section“Driving”). The thinner is the tread,
the greater is the risk of skidding.
•Drive carefully on wet roads to
decrease the risk of aquaplaning.
Winter Tires
These tires are specially designed for
driving on snow and ice and are fitted
to replace the ones supplied with the
vehicle.
The features of these tires are
significantly reduced in winter when
tread depth is less than 0.157 in (4
mm). In this case, they should be
replaced.
The specific features of the winter tires
lead to lower performance under
normal environmental conditions or
on long highway trips, compared to
the standard tires.
Therefore, their use should be limited
to the situations and performance for
which they have been type-approved.
TheAuthorized Maserati Dealercan
provide all necessary information
about fitting winter tires on the
vehicle.
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264

WARNING!
The engine idle must be performed
outdoors. Exhaust gases contain
carbon monoxide which is strongly
toxic and potentially lethal.
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
Battery Statement
Battery Statement Status of
Charge
To avoid problems with ignition and/or
the electrical system in general when
you are driving, the battery charge
status is constantly maintained and
guaranteed by the vehicle's recharge
circuit; the main component of which
is the alternator. This circuit is only
able to supply voltage to the battery
when the vehicle is traveling.
The
warning light on the
instrument cluster (see “Instrument
Cluster” in section “Dashboard
Instruments and Controls”), will
indicate any malfunctions in the
recharge circuit or an insufficient
battery charge status (flashing).
The vehicle is fitted with advanced
electronic systems, such as, for
example, the alarm system and various
electronic control modules, which
consume power even when the key in
the ignition switch is in theSTOP (OFF)
position and the vehicle is not being
used.
Therefore, it is fundamental that the
battery is properly charged to ensure
that the engine starts properly andthat all the electrical/electronic systems
in the vehicle work efficiently.
Maintaining Battery Charge
If you perform short daily trips
(approximately 10 miles/16 km), which
correspond to an annual total of 4000
miles/6000 km, or when the vehicle is
not going to be used for one week or
more, Maserati recommends
connecting the vehicle to a battery
charger, to save you the trouble of
having to recharge the battery (see
“Battery Charge Maintainer
Operation” in this chapter).
The battery charge maintainer will
keep the battery charged properly and
at the correct voltage levels required
by the systems and devices in the
vehicle.
Before using the battery charge
maintainer, carefully follow the
instructions provided.
If you do not use a battery charge
maintainer to prevent the battery
from going dead when you are not
going to use the vehicle for long
periods of time, you need to check and
recharge the battery at least once
every three weeks. Make this check if
you perform short daily trips
(approximately 10 mi/16 km) which
correspond to an annual total of 4000
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270

Engine Data
Cylinder number and position 8 - 90° V
Number of valves per cylinder 4
Bore x stroke 94 x 84,5 mm
Total displacement 4691 cu.cm
Compression ratio 11.2 +/- 0.2 : 1
Maximum power output (EC) (*) 338 kW – 460 CV
- corresponding rpm 7000 rpm
Maximum torque (EC) 520 Nm – 53 kgm
- corresponding rpm 4750 rpm
(*) Values obtained in SPORT drive mode with 98 R.O.N.
Timing SystemThe timing system uses two overhead camshafts. The
camshafts are equipped with timing variator. The timing
control is done by two chains.
Lubrication
SystemThe lubrication system is controlled by the wet sump system
through an oil pump and the relative suction screen,
incorporated in the crankcase.
Cooling SystemEngine cooling is ensured by an anti-freeze mixture
circulating inside a circuit equipped with radiator,
centrifugal pump and expansion tank.
Injection –
Ignition SystemHigh-pressure direct fuel injection system. Static ignition
with digital electronic control system included and
controlled by a single microprocessor ECU.
Features and Specifications
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280

Brakes
Self-ventilating disc brakes on the four
wheels.
• Front disc diameter: 14.1 in (360
mm).
• Rear disc diameter: 13 in (330 mm).
• 6-piston front brake caliper
(Dual-cast technology).
• 4-piston rear brake caliper.
The Electric Parking Brake (EPB) acts
on the rear wheels.
Transmission
Electro-hydraulically controlled
automatic transmission with 6 gears
(plus reverse), torque converter,
lock-up clutch and anti-slip function.
TRANSAXLE-type transmission.
Traction system equipped with rear
self-locking differential.
Suspension
Front and rear articulated
quadrilateral suspensions.
Skyhook adjustable damping
suspension (optional on MC version)
that allows the driver to choose two
settings for the shock absorbers,
depending on the road surface
conditions, speed and comfort.
Steering
Hydraulic speed-sensitive steering with
cooling exchanger system.
Steering diameter = 11.7 yd (10,7 m).
No. of steering wheel turns = 1.5 (to
the left and right).
Wheels
NOTE:
In order to maintain high performance
and safety level, Maserati
recommends to use tires equivalent to
the original size.
WARNING!
•The maximum speed reachable with
the tires (including winter tires) is
indicated by the tire manufacturer.
Always comply with the regulations
in force in the Country you are
driving in.
•Never exceed the maximum speed
indicated for the tires (including
winter tires): failure to respect the
max. speed may damage these tires.
Danger: risk of accident!
CAUTION!
• While respecting the specified sizes,
for the safe operation of the vehicle
it is also essential that it is equipped
with the same brand and type of
tires on all wheels.
• Do not use an inner tube with
Tubeless tires.
Standard Wheel Dimension
Light alloy rims 20” x 8.5J
(front)
20” x 10.5J
(rear)
- Front tires 245/35 ZR 20
- Rear tires 285/35 ZR 20
- Front winter tires 245/35 ZR 20
- Rear winter tires 285/35 ZR 20
Light alloy spare rim
(optional)18”x6J
- Spare tire 175/55 R 18
Features and Specifications
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281