Maserati QUATTROPORTE Owner's Manual page 228

Driver Assistance Systems
vehicles or objects in its path this
warning may temporarily occur.
If weather conditions are not a
factor, the driver should examine the
windshield and the camera. They may
require cleaning or removal of an
obstruction.
When the condition that created
limited functionality is no longer
present, the ACC and FCW systems will
return to full functionality.
NOTE:
If the windshield wiper warning
message occurs frequently (e.g. more
than once on every trip) without any
snow, rain, mud, or other obstruction,
have the windshield and forward-
facing camera inspected at the Service
Network.
6
Service ACC/FCW Warning
If the ACC and FCW systems turn
off, and the system displays a
service warning, there may be an
internal system fault or a temporary
malfunction that limits functionality.
Although the vehicle is still driveable
under normal conditions, ACC and
FCW will be temporarily unavailable. If
this occurs, try activating ACC and FCW
again later, following an ignition cycle.
If the problem persists, contact the
Service Network.
226
Precautions while Driving with
ACC
Offset Driving
ACC may not detect a vehicle in the
same lane that is offset from your
direct line of travel, or a vehicle
merging in from a side lane. There
may not be sufficient distance to the
vehicle ahead. The offset vehicle may
move in and out of the line of travel,
which can cause your vehicle to brake
or accelerate unexpectedly.
Turns and Bends
When driving on a curve with ACC
engaged, the system may decrease the
vehicle speed and acceleration for
stability reasons, with no target vehicle
detected. Once the vehicle is out of
the curve the system will resume
your original set speed. This is a part
of normal ACC system functionality.
Moreover, the radar sensor might
detect a vehicle on a nearby lane or no
longer detect the target vehicle.