Recirculation and Air Quality
Sensor (AQS)
When outside air contains smoke,
odours, or high humidity, or if rapid
cooling is desired, you may wish to
recirculate interior air by pressing the
recirculation control button or the
relevant soft-key to activate the two
different functionalities.
The recirculation function, that allows
to open/close the A/C air inlet by
operating the
button on the
climate control panel or the MTC+
soft-key, is integrated with the Air
Quality Sensor.
This sensor, positioned upstream of
the A/C filter, in front of the air intake
of the A/C system, detects the
presence of polluting substances and
submits an electric signal to the A/C
control unit, that closes the intake of
the external air by activating the air
recirculation.
The
button or the MTC+ soft-key
can therefore enable three operating
modes, switchable in sequence.
Starting from the outside air condition
with LED on the button off and MTC+
soft-key not highlighted, in which the
external air is aspirated by the A/C
system and treated to be introduced
into the passenger compartment,
subsequent actuations of the button or the MTC+ soft-key
change the state as follows.
• First press: the A/C system activates
the automatic recirculation control
by using the signal transmitted from
the AQS. The symbol ‘’A’’ on the
button and the MTC+ soft-key
lights up.
• Second press: the A/C system
activates the recirculation, the LED
on the
button or the MTC+
soft-key lights up. The A/C system
will stay this way up to a new
actuation, or until the increased
humidity could lead to windshield
fogging: in this case the recirculation
automatically switches to external
air.
• Third press: the A/C system switches
back to external air (default
operating mode).
The next press of the
button or
the MTC+ soft-key restars the
operating cycle just described.
NOTE:
To avoid the risk of fogging, the AQS
is disabled when the external
temperature falls below 35°F (2°C). NOTE:
In cold weather, use of recirculation
mode may lead to window fogging.
Select the MIX mode
and increase
the blower speed to prevent fogging.
MAX A/C
Activating this function, the system
switches to exit “AUTO”, enter “A/C”
and recirculation. The minimum
temperature (LO) in both zones, the
maximum blower speed and theDashboard Instruments and Controls
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219
10. Block the settings of the rear
climate.
11. Return to the front climate
control screen.
Operating Tips • Continuous use of the air
recirculation in winter, in rainy
weather or humid climate is not
recommended because it may cause
window fogging. • Interior fogging on the windshield
can be quickly removed by fast
defrosting/defogging. The “Mix”
mode can be used to maintain a
clear windshield and provide
sufficient heating. If side window
fogging becomes a problem increase
blower speed.
NOTE:
• Recirculation mode without A/C
should not be used for long periods
of time, as fogging may occur.
• If inside the passenger compartment
there are conditions of high
temperature and humidity, when the
A/C compressor is switched on (A/C
softkey illuminated on MTC+ display
or LED on climate control panel A/C
button ON) there may be some cold
steam at ventilation port outlet: this
situation is normal and does not
indicate air conditioning system
malfunction.
• Automatic Temperature Controls
(ATC) will automatically adjust the
climate control settings to reduce or
eliminate window fogging on the
front windshield.
• Make sure the external air intake
grille, located directly in front of the
windshield, is free of obstructions such as leaves or other objects.
Leaves collected in the air intake
may reduce airflow, and if they enter
the plenum, they could plug the
water drains. In winter make sure
the air intake is clear of ice, slush,
and snow.
• The temperature can be displayed in
Metric or U.S. units by selecting the
“Units” customer programmable
feature. See “MTC+ Settings” in this
section.
• Any time you store your vehicle or
keep it stationary (i.e., during
vacation) for two weeks or more,
run the air conditioning system at
idle for about five minutes in the
fresh air by high blower setting. This
will ensure adequate system
lubrication and minimize the
possibility of compressor damage
when the system is started again.
A/C Filter The climate control system filters
outside air containing dust, pollen and
some odors. Strong odors cannot be
totally removed by A/C filter at the
entrance of the air climate system. See
“Maintenance Procedures” in section
“Maintenance and Care” for filter
replacement instructions.Dashboard Instruments and Controls
4
223
Main Operations/Service Coupons Interval running coupons: every 12,500 mi (20,000 km)
or 1 year
Service coupons 1° 2° 3° 4°
5° 6°
Main operations Available Pre-Paid Maintenance
Program
Vehicle road test III
Check with Maserati Diagnosi IIIIII
Engine oil and filter RRRRRR
Engine coolant level IIIIII
Engine check for leaks IIIIII
Cooling system connections and lines (check for leaks) III
Air filter R
Belt for alternator, water pump and air conditioning
compressor (3.8 V8 engine) IIIRII
Replace every time the part is removed
Belt for alternator (1) and belt for water pump and air
conditioning compressor (3.0 V6 engine) IIIRII
Replace every time the part is removed
Spark plugs RR
Intercooler check for leaks IIIIII
Brake fluid IIIIII
Replace every 2 years
Brake system (lines, calipers, connections) - Instrument cluster
warning light efficiency - Parking brake operation IIIIII
Tire wear, tire and spare tire (if equipped) pressure check IIIIII
Joints, rods for front and rear suspensions, front and rear
under-chassis IIIMaintenance and Care
7
366
(Continued)
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
Heavy-Duty Vehicle Use If the car is mainly used under one of
the following conditions:
• towing a trailer;
• off-road;
• short, repeated journeys (less than
4–5 mi/7-8 km) at sub-zero outside
temperatures;
• engine often idling or driving long
distances at low speeds or long
periods of idleness;
you should perform the following
inspections more frequently than
recommended on the “Scheduled
Service Plan”:
• check front disc brake pad conditions
and wear; • check cleanliness of hood and trunk
locks, cleanliness and lubrication of
linkage;
• visually inspect conditions of: engine,
transmission, pipes and hoses
(exhaust - fuel system - brakes) and
rubber elements (boots - sleeves -
bushes - etc.);
• check battery charge;
• visually inspect condition of the
accessory drive belts;
• check and, if necessary, change
engine oil and replace oil filter;
• check and, if necessary, replace
pollen filter of the A/C system;
• check and, if necessary, replace air
cleaner filter.
CAUTION!
All maintenance operations for the
vehicle must be carried out by an
Authorized Maserati Dealer . For
routine and minor maintenance
operations which you can carry out
yourself, make sure that you have the
necessary experience and always use
suitable equipment, original Maserati
spare parts and the prescribed fluids.
Shall this not be the case, do not carry
any operation on your own and
contact an Authorized Maserati Dealer .
On Board Diagnostic System Your vehicle is equipped with a
sophisticated on board diagnostic
system called OBD II. This system
monitors the performance of the
emissions, engine, and automatic
transmission control systems. When
these systems are operating properly,
your vehicle will provide excellent
performance and fuel economy, as
well as engine emissions suited to
current government regulations.
If any of these systems require service,
the OBD II system will turn on the
Malfunction Indicator Light
on the
instrument cluster display (refer to
“Instrument Cluster” in section
“Dashboard Instruments and
Controls”). The system stores as well
diagnostic codes and other
information to assist your service
technician by performing repairs.
Although the vehicle will be driveable
and will not need towing, contact an
Authorized Maserati Dealer for service
as soon as possible.Maintenance and Care
7
368
Maintenance Service
Components 3.8 V8 Engines (in picture GTS version)
1 Inspection cover to access the
engine oil level dipstick (present
only in GTS version).
2 Engine oil filler neck.
3 Air cleaner filters.
4 Engine coolant expansion
reservoir cap.
5 Coolant reservoir cap for
transmission cooling system.
6 Windshield/headlight washer
fluid reservoir cap.
7 Brake fluid reservoir access
cover.
8 A/C pollen filter access cover.
9 Integrated power module
(fuses).
3.8 V8 Engines (GTS Version pictured)Maintenance and Care
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372
3.0 V6 Engines
1 Engine oil dipstick.
2 Engine oil filler neck.
3 Air cleaner filters.
4 Engine coolant expansion
reservoir cap.
5 Coolant reservoir cap for
transmission cooling system.
6 Windshield/headlight washer
fluid reservoir cap.
7 Brake fluid reservoir access
cover.
8 A/C pollen filter access cover.
9 Integrated power module
(fuses).
3.0 V6 EnginesMaintenance and Care
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373
Fluid Level Check for Coolant
Transmission System
The coolant contained in the bottle of
this system is the same as the one used
for the cooling system of the engine.
For the preparation of the mixture of
water and antifreeze and for the
control of the level, proceed as shown
in the “Engine Coolant Level Check”
of this chapter.
Engine Air Filters Replacement Contact an Authorized Maserati
Dealer to have the air filters replaced.
A/C Air Filter Replacement This filter performs mechanic/
electrostatic air filtering, provided
that windows and doors are closed.
The filter is located under the hood in
the external A/C system air inlet, on the passenger side of the vehicle, next
to the windshield wipers.
To replace the filter during the
scheduled maintenance services or
after the vehicle has been heavily used
on dusty roads, proceed as follows:
• Remove the access door in the cowl
screen by pressing the retaining clips
indicated.
• Unsnap both ends and lift the filter
retaining cover. • Remove the used filter slipping it off
from within the air intake.
• Install the new filter with arrows
pointing in the direction of airflow,
which is toward the rear of the
vehicle (text and arrows on the filter
will indicate this).
• Close the filter retaining cover and
reinstall the access door.Maintenance and Care
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379
CAUTION!
Failure to replace the filter may
considerably reduce the air
conditioning and heating system
efficiency.
Wiper Maintenance and Blades
Replacement Windshield Wiper Arms Lifting
When the windshield wiper arms are
in rest position it is not possible to
check or replace the blades as they
remain under the engine hood.
To service the blades it is necessary to
move the wiper arms in “Service”
position (see chapter “Wipers and
Washers” in section “Understanding
the Vehicle”). In this way it is possible
to lift the arms for cleaning or
replacing the wiper blades.
WARNING!
It is dangerous to operate or service
the wiper blades with the windshield
wipers in an active position (any
position different from “OFF”) and
with the ignition switch in the RUN
position. The rain sensors may
suddenly activate the wipers. Always use the “Service” position for any
intervention on the windshield wiper
blades.
Windshield Wiper Maintenance
Life
expectancy of wiper
blades varies
depending on the geographical area’s
weather conditions where the car is
used and frequency of use. Poor
performance of blades may be present
with chattering, marks on the glass,
water lines or wet spots. If any of
these conditions are present, clean the
wiper blades or replace if necessary.
Clean the rubber edges of the wiper
blades and the windshield/rear
window glasses periodically with a
sponge or soft cloth and a mild
nonabrasive cleaner. This will remove
accumulations of salt or road film.
Operation of the wipers on dry glass
for long periods may cause
deterioration of the wiper blades.
Always use washer fluid when using
the wipers to remove salt or dirt from
a dry windshield.
Avoid using the wiper blades to
remove frost or ice from the
windshield. Keep the blade rubber out
of contact with petroleum products
such as engine oil, gasoline, etc.
Spray nozzles If the jet does not work, first check
that there is fluid in the tank (see
paragraph “Level checks” in this
section) then check that the nozzles
are not clogged.
Windshield Wiper Blades Replacement
• Move the wiper arms into “Service”
position, (see chapter “Windshield
Wipers and Washers” in section
“Understanding the Vehicle”) and lift
them.
• Press the indicated button, slip off
the blade support from the arm and
replace it.
• Return the blade to its original
position on the windshield.
• Turn the multifunction lever to one
of the automatic settings (see
chapter “Windshield Wipers and
Washers” in section “Understanding
the Vehicle”) and move the ignitionMaintenance and Care
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