2020 MASERATI GRANTURISMO brake sensor

NOTE:
Front sensors are enabled only when
button LED is illuminated. In
addition, any pressing of
button
when vehicle speed is above 6 mph
(10 km/h) will be ignored by the
system.
Obstacle Signalling
The acoustic signals are emitted by
two buzzers, one under the dashboard
and one in proximity of the luggage
shelf.
When the obstacle is located at a
distance of less than 14 in (35 cm) from
the bumper, the beep is continuous.
The warning beep stops immediately if
the distance between the vehicle and
the obstacle increases. The tone cycle is
constant if the distance measured by
the central sensors remains unaltered.
If this occurs with the lateral sensors,
the signal stops after approximately 7
seconds, to prevent for example
continuous beeps in the event of
maneuvers alongside walls.
The distance from the obstacles can
also be graphically shown on the
instrument cluster display by means of
an image that shows the vehicle
surrounded by explanatory symbols of
the distance (maximum/average/minimum) and the position
(front/rear/central/side) of the obstacle
detected.
The color represents the distance,
while the field represents the position.
The green color represents the
maximum distance detected, the
yellow color the medium distance and
the red color the minimum one. The
rear sensors are not shown in the
image on the instrument cluster
display if only the front sensors are
active.
WARNING!
For the system to operate correctly the
sensors positioned on the bumper
must be kept clean (remove any mud,
dirt, snow or ice).
Sensor Range
The sensors allow the system to
monitor the front and rear of the
vehicle; they are positioned so as to
monitor the central and lateral zones
at the front and at the rear of the
vehicle.
In the event of an obstacle located in a
central area, this will be detected at
distances of less than 35 in (0,9 m) at
the front and 59 in (1,50 m) at the rear,
depending on the type of obstacle and
its dimensions.
If the obstacle is located in a lateral
position, it will be detected at
distances of less than 31 in (0,8 m).
Failure Indicators
The system ECU checks all the
components every time R (Reverse)
gear is engaged.
In the event that the parking sensors
fail, the relative
warning light and
message illuminate on the instrument
cluster display.
In the event of a failure signal, stop
the vehicle and turn the key in the
ignition switch toSTOP (OFF)position.
Then try cleaning the sensors or
moving the vehicle away from any
possible ultrasound sources (e.g.
pneumatic truck brakes or pneumatic
Before Starting
2
62

Sport Skyhook Suspension
(for versions/markets,
where provided)
The electronic system controlling the
vehicle suspension uses the
sophisticated on board sensors and is
aimed at optimizing vehicle
performance.
The system is capable of constantly
monitoring suspension damping by
means of the actuator fitted on each
shock absorber (Skyhook type). This
way, the shock absorber setting is
suited to the road surface conditions
and vehicle dynamics, thus improving
passenger comfort and road-holding.
By pressing button “SPORT” on the
central console, the driver can choose,
even while driving, a normal or
dynamic-type setting for the
suspension, depending on their own
driving style.This way, the system operates with a
shock absorber “softer” setting in
NORMAL drive mode, and a “harder”
setting if SPORT drive mode is selected
(see “Drive Mode” in section
“Driving”).
The strategy used by the system
controlling suspension damping is
aimed at reducing the vertical
oscillations of the vehicle (rolling and
pitching) to a minimum.
The activation of SPORT drive mode
sets the suspension for sports-style
driving and acts on the ASR and
gearbox systems as well, modifying
their setting for dynamic-style driving.
System Components
The system is controlled by an ECU
which manages the solenoid valves on
each shock absorber in response to the
sensor signals, thus adjusting
suspension damping and setting.The sensors which enable the ECU to
calculate the vehicle speed, vertical
and side acceleration, as well as the
instantaneous braking system
pressure, thereby controlling
suspension damping, are the
following:
• front left-hand vertical acceleration
sensor;
• front right-hand vertical acceleration
sensor;
• rear vertical acceleration sensor;
• front left-hand wheel acceleration
sensor;
• front right-hand wheel acceleration
sensor;
• lateral acceleration sensor;
• driving speed sensor;
• brake pedal switch.
Self-diagnostics
Whenever the engine is started, the
system performs a self-diagnostic
cycle. If a malfunction is found, the
amber warning light is displayed
accompanied by the message “Check
suspensions” (see paragraph
"Malfunction Indicators" in this
chapter).
Understanding the Vehicle
3
103

Adaptive Light Control System Failure
Warning Light
This warning light, and the
related message, indicate a
failure of the automatic
headlight aiming system.
Please contact anAuthorized Maserati
Dealerto check the system.
ASR System Failure Warning Light
This warning light indicates
the deactivation or failure of
the ASR system.
In the event of a failure,
contact anAuthorized Maserati
Dealer.
Rain Sensor Failure Warning Light
This warning light indicates
that the rain sensor of the
windshield wiper system is
faulty.
Please contact anAuthorized Maserati
Dealerto check the system.
Park Assist Sensor Failure Warning
Light
This warning light indicates
that the sensor of the park
assist system is faulty.
Please contact anAuthorized
Maserati Dealerto check the system.Suspensions Failure Warning Light
This warning light and the
related message turn on while
driving if there is a failure of
the suspension system.
Please contact anAuthorized Maserati
Dealerto check the system.
Ice Hazard Indicator
When the external
temperature falls below 3°C
(38°F), the temperature value
blinks for a few seconds, the
warning light turns on and a message
is displayed to warn the driver of the
risk of icy roadbed.
Under such conditions, we recommend
using the ICE drive mode (see
“Automatic Transmission” in section
“Driving”) drive carefully and slow
down as the grip of the tires may be
significantly reduced.
The warning light switches off when
the temperature reaches 6°C (43°F) or
higher.
EPB Automatic Operation Disabled
Warning Light
This warning light and related
message illuminate when the
EPB automatic activation/
deactivation function is
disabled.The failure could also completely or
partially block the vehicle because the
parking brake could remain on even
after it has been automatically or
manually disengaged though its
controls.
If it is still possible to use the vehicle
(parking brake not engaged) drive to
the nearestAuthorized Maserati
Dealerand remember to perform each
operation/command during which the
electric parking brake does not work.
Seat Heating Indicator
It indicates that the heating
function is activated on one or
more seats.
Maintenance Schedule Indicator
Depending on the
accompanying message, this
indicates that service schedule
deadlines are either
approaching or due.
Upon reaching a deadline, contact an
Authorized Maserati Dealer.
Dashboard Instruments and Controls
4
119

engage the parking brake, but also to
shift the transmission shift lever to P
(Park) before leaving the vehicle.
When parking on hill roads, it is
important to turn the front wheels
toward the curb on a downhill grade
and away from the curb on an uphill
grade.
Apply the parking brake before
placing the shift lever in P (Park),
otherwise the load on the
transmission locking mechanism may
make it difficult to move the shift
lever out of P (Park).
In certain conditions, it is however
advisable to disengage the parking
brake manually and slightly apply the
service brake for starting off. This is
advisable when there are obstacles
very close to the vehicle in the
direction in which you intend to move.
Brake and Stability
Control System
The vehicle is equipped with an
Electronic Stability Control (ESC)
anti-yawing system, which helps to
maintain directional control in the event
of loss of grip of the tires. The system is
able to detect potentially dangerous
situations for the stability of the vehicle
and automatically sets the brakes on all
four wheels in a differentiated manner,
in order to provide a torque settlement
of the vehicle.
ESC includes the following subsystems:
• ASR (Anti-Slip Regulation)
• ABS (Anti-lock Braking System)
• EBD (Electronic Brake-force
Distribution)
• HBA (Hydraulic Brake Assistance)
• BOS (Brake Override System)
WARNING!
•These systems cannot prevent the
natural laws of physics from
affecting the vehicle, nor can they
increase traction, braking or steering
efficiency beyond that afforded by
the condition of the vehicle brakes
and tires.•These systems cannot prevent
collisions, including those resulting
from excessive speed in turns,
following another vehicle too
closely, or hydroplaning.
•The capabilities of a vehicle
equipped with these systems must
never be exploited in a reckless or
dangerous manner that could
jeopardize the driver’s and the
passenger’s safety or the safety of
others.
Electronic Stability Control
(ESC)
This system enhances directional
control and stability of the vehicle
under various driving conditions. The
ESC corrects over steering and under
steering of the vehicle by applying the
brake to the appropriate wheel.
Engine power may also be reduced to
assist in counteracting the conditions
of instability and maintain the right
direction. The system is also able to
reduce the engine power.
Through sensors fitted on the vehicle,
the ESC system detects the driver’s
chosen direction comparing it to the
one maintained while running. In case
of discrepancy between the required
trajectory and the current one, the
Driving
5
167

• in the event of loss of grip on wet
roads (aquaplaning).
The ASR system works in combination
with the electronic suspension control
system: in normal conditions (SPORT
mode off), stability in low and
medium grip conditions has priority,
while with SPORT mode active, the
system favors traction, thereby
optimizing vehicle performance on dry
asphalt.
The ASR system is automatically
activated every time the engine is
started and can be deactivated by
pressing
(ESC Off) button (see
"Drive Mode" in this section).
ASR System Failure
In the event of a fault, the system is
automatically disabled and cannot be
re-activated. While driving, this
condition is signaled by the
amber
warning light on the instrument
cluster display, which illuminates
together with the message “ASR
unavailable go to dealer”. Also the
(ESC On) amber warning light
illuminates inside the tachometer with
the message indicating that the ESC
system is unavailable. In this case drive
with the greatest care and have the
system immediately checked by the
nearestAuthorized Maserati Dealer.MSR Function
The ASR system also controls the
engine braking torque when the
accelerator pedal is released under
low grip conditions (e.g., snow, ice,
etc.): in these conditions, the high
braking torque provided by the
engine may cause instability of the
vehicle.
The system, using the same sensors as
the ABS, detects skidding of one or
both driving wheels when the
accelerator is released and opens the
motor-driven throttle of the engine
fuel system thereby reducing the
braking torque and re-establishing the
maximum grip conditions for the
driving wheels.
WARNING!
The maximum deceleration that can
be obtained with the engine brake
always depends on the tire grip on
the road surface. Snow or ice
obviously reduce grip values.
WARNING!
California Proposition 65
Operating, servicing and maintaining
a passenger vehicle or off-road vehiclecan 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
Anti-Lock Braking System (ABS)
and Electronic Brake-force
Distribution (EBD)
The Anti-Lock Brake System (ABS)
provides increased vehicle stability and
brake performance under most
braking conditions. The system
automatically “pumps” the brakes
during severe braking to prevent
wheel lock-up.
The Electronic Brake-force Distribution
(EBD) prevents the rear wheels from
over-braking and provides greater
control of available braking forces
applied to the rear axle.
Driving
5
169

In the Event of an Accident. . . .203
Jump Starting Procedure......214
ToolKit..................202
Towing a Disabled Vehicle.....216
Engine
Engine Air Filter Replacement . .235
Engine Coolant Level Check. . . .230
Engine Oil Level Check.......233
Engine Overheating.........204
Engine Start Failure.........149
Engine Turn Off............149
Hood, Open and Close........38
Normal Starting of the Engine . .148
Use of the Engine...........173
EPB (Electric Parking Brake)......164
ESC (Electronic Stability Control) . .167
Filters
A/C Air Filter Replacement.....253
Engine Air Filter Replacement . .235
Fuel
Carbon Monoxide Warning. . . .191
Emergency Fuel Filler Door
Release..................193
Fuel Consumption Data.......268
Fuel Requirements..........189
Fuel System Warnings........191
Gasoline/Oxygenate Blends. . . .190
Materials Added to Fuel......191
MMT in Gasoline...........190
Reformulated Gasoline.......190
Fuses Position and Replacement. . .241HomeLink...................98
Hood, Open and Close..........38
Indicator Lights
Air bag Warning Light........66
Indicator Lights/Warning Lights
TFT Display: Warning/Indicator
Lights...................116
Warning and Indicator Lights on
Analog Instrument..........109
Inertia Switch, Fuel Cut-out......218
Infotainment System..........120
Manual Controls and Devices . .122
Installing a LATCH-Compatible Child
Restraint System.............56
Instrument Cluster............108
Interior Components...........70
Interior Maintenance and Cure . . .258
Interiors Features.............93
Jump Start Procedure.........
.215
Keys
......................22
Level Checks................230
Adding Windshield/Headlight
Washer..................233
Brake Fluid Level Check.......232
Engine Coolant Level Check. . . .230
Engine Oil Level Check.......230
Power Steering Fluid Level
Check...................235
Transmission Oil Check.......235Lights.....................83
Adaptive Bi-Xenon Headlights . . .84
Automatic Headlights.........85
Bulb Replacement..........247
Cargo Light................89
DRL, Daytime Running Lights....84
Front Domelights............88
Hazard Warning Flasher.......89
Headlights................85
High Beams and Flashing......87
Light Switch...............83
Parking Lights..............85
Rear Fog Lights.............86
Turn Signals................86
Twilight Sensor.............86
Loading the Vehicle
Vehicle Load Carrying Capacity . .97
Maintenance
A/C System Maintenance......252
Bodywork Maintenance and
Care....................255
Interior Maintenance and Care . .258
Maintenance Procedures......229
Periodic Maintenance........227
Scheduled Maintenance
Service..................222
Scheduled Service Plan.......224
Wheels Maintenance........254
Maserati Roadside Assistance
Program...................15
MIL (Malfunction Indicator Light). .109
Index
9
277