Maserati GranTurismo Sport 2015, Owner'S Manual

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While driving, the system
automatically switches to the upper
gear if the engine reaches the pre-
established speed (3000 RPM). “Low-
grip” mode has priority over
SPORT
mode and assists the ESC system.
A downshift request from
6
th to 5 th gear will only
be accepted if the engine
speed rate in 5 th gear is lower than
3000 RPM. As “low-grip” mode can
be activated at any time and the
system limits the engine speed to
3000 RPM in all gears except for the
6
th
, unrequested gearshifts could take
place.
In any case, it is advisable to
deactivate
SPORT mode before
selecting “low-grip” mode.
When sequential manual gearshifting
is active, regardless of the mode
set (
NORMAL / SPORT / ICE ), the
gearbox will automatically upshift
or downshift when reaching the
minimum and maximum RPM.
This is to prevent engine overrevving
or underrevving.
Strategies for downhill driving
When the accelerator pedal is
released, the gearbox system detects
that the vehicle is moving downhill
and deactivates upshifting. When
the accelerator pedal is depressed,
upshifting is reactivated but will be
delayed.
When the brake pedal is depressed,
the gearbox system downshifts to
provide enhanced engine braking
power.
For instance, when driving downhill,
the gearbox system operates so as
to avoid upshifting and shifting
gears when the accelerator pedal
is released, and delays gear
engagement by a few seconds when
the accelerator pedal is depressed.
In addition, when the brakes are
applied, it engages the lowest gear
in order to provide enhanced engine
braking power.
This strategy is designed to improve
downhill driving safety.
Strategies in curves
The system detects when the vehicle
goes into a curve through the lateral
acceleration and the steering angle.
Detecting this condition, it controls
gearshifting using a specific mode.
This mode is exited when the vehicle
comes out of the curve, at a distance
that varies depending on the vehicle
speed.
Fast-off strategy
When the accelerator pedal is fully
released, the system deactivates
upshifting.
The next time the pedal is depressed,
upshifting will be reactivated only
after a few seconds.
Upshifting is also deactivated when
the accelerator pedal is partially
released; the system waits the time
necessary to evaluate if the release
action is completed.
Hot-mode strategy
In the event that the engine oil or
coolant temperature is too high or
both, the gearbox system reduces the
maximum engine speed to 4000 RPM.
Therefore, upshifting will occur at this
limit.
This strategy does not apply to
downhill driving, so as to always
have the efficiency of engine braking
together with the standard braking
system.
ESC system operations
In order to help prevent unstable
driving conditions, the
ESC system
may request the gearbox system to
deactivate gearshifting. The system