Hill Descent Control - Hdc - Maserati Grecale 2022 Owner's Manual

Driver Assistance Systems

Hill Descent Control - HDC

HDC maintains vehicle speed while
descending hills during various driving
situations, by actively controlling the
brakes.
HDC is part of the ESC system and has
three possible states:
• Off: function is not enabled and will not
activate.
• Enabled: function is enabled and ready
but activation conditions are not met, or
driver is actively overriding with throttle
application.
• Active: function is enabled and actively
controlling vehicle speed.
Displayed Information
HDC status is represented by icons at
the top of the display, in the dedicated
area. See "Instrument cluster overview"
6
in section "Dashboard Instrument and
Controls".
Enabling and Activating the
System
HDC is enabled by pressing the HDC
soft-key on the bottom bar of the
Comfort Display.
212
The following conditions must also be
met to enable HDC:
• Maximum activation speed: 40 km/h
(20 mph).
• Parking brake is released.
• CC or ACC not engaged.
• SL not engaged.
• ESC ON.
• Drive mode not in CORSA.
HDC enabling is indicated by the
white light with default set speed at 4
km/h (4 mph) on display coming steady
on. The light remains white when driving
on a flat stretch of road between two
descents, or when the descent is over.
Failed enabling is indicated by a
message on display.
Once enabled, when driving the system
automatically activates HDC.
When the vehicle is between a defined
threshold of slope (from 8% to 3%), the
light turns white with default set
speed at 4 km/h (4 mph). In this stage,
the driver can modify the HDC set speed.
When the vehicle exceeds a defined
threshold of slope (8%), the
turns green and the current set speed
appears below it. Therefore, the vehicle
speed is increased or decreased until it
reaches the default value.
Setting
The set speed for HDC is selectable by
the driver, and can be adjusted by using
the brake pedal unit or the multifunction
control on steering wheel, which is the
same used to set the Cruise Control
(see "Cruise Control - CC" or "Adaptive
Cruise Control - ACC" in this section).
• If the driver brakes, the speed is
reduced and the HDC set speed is
updated according to the current
vehicle speed, up to 2 km/h (1 mph)
• If the driver accelerates without
exceeding the maximum limit value of
light