sensor cannot detect the reflector of the vehicle
ahead, the ICC system may not maintain the
selected distance.
The following are some conditions in which the
sensor cannot detect the signals:● When the reflector is positioned high on the
vehicle (trailer, etc.) .
● When the reflector on the vehicle ahead is
missing, damaged or covered.
● When the reflector is covered with dirt, snow
and road spray.
● When the snow or road spray from other
vehicles reduces the sensor’s visibility.
● When dense exhaust or other smoke (black
smoke) from vehicles reduces the sensor’s
visibility.
● When excessively heavy baggage is loaded
in the rear seat or the cargo area of your
vehicle.
● When your vehicle is towing a trailer, etc.
The ICC system is designed to automatically
check the sensor’s operation. When the sensor is
covered with dirt or obstructions, the system will
automatically be canceled while allowing con-
ventional cruise control to remain operational. If
the sensor is covered with ice, a transparent or translucent vinyl bag, etc., the ICC system may
not detect them. In these instances, the vehicle-
to-vehicle distance control mode may not cancel
and may not be able to maintain the selected
following distance from the vehicle ahead. Be
sure to clean the sensor regularly.
The vehicle-to-vehicle distance control mode is
designed to maintain a selected distance and
reduce the speed to match the speed of a slower
vehicle ahead; the system decelerates the ve-
hicle as necessary. However, the ICC system can
only apply up to 25% of the vehicle’s total braking
power. This system should only be used when
traffic conditions allow vehicle speeds to remain
fairly constant or vehicle speeds change gradu-
ally. If a vehicle moves into the traveling lane
ahead or if a vehicle traveling ahead rapidly de-
celerates, the distance between vehicles may
become closer because the ICC system cannot
decelerate the vehicle quickly enough. If this oc-
curs, the ICC system will sound a warning chime
and blink the system display to notify the driver to
take necessary action.
The system will cancel and a warning chime will
sound if the speed falls below approximately 20
MPH (32km/h) . The system will also disengage
below the 20 MPH (32km/h) cut-off speed or
over the maximum set speed.
Refer to “Approach warning” later in this section.The following items are controlled when the se-
lector lever is in any D (Drive) position.
● When there are no vehicles traveling ahead,
the vehicle-to-vehicle distance control
mode maintains the speed set by the driver.
The set speed range is between approxi-
mately 25 and 89 MPH (40 and 144 km/h) .
● When there is a vehicle traveling ahead, the
vehicle-to-vehicle distance control mode
adjusts the speed to maintain the distance
selected by the driver from the vehicle
ahead. The adjusting speed range is be-
tween approximately 20 MPH (32 km/h) and
the set speed.
● When the vehicle traveling ahead has moved
out from its lane of travel, the vehicle-to-
vehicle distance control mode accelerates
and maintains speed up to the set speed.
The ICC system does not control vehicle speed
or warn you when you approach stationary and
slow moving vehicles. You must pay attention to
vehicle operation to maintain proper distance
from vehicles ahead when approaching toll gates
or traffic congestion.
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The detection zone of the ICC sensor is limited. A
vehicle ahead must be in the detection zone for
the vehicle-to-vehicle distance detection mode
to maintain the selected distance from the vehicle
ahead.
A vehicle ahead may move outside of the detec-
tion zone due to its position within the same lane
of travel. Motorcycles may not be detected in the
same lane ahead if they are traveling offset from
the centerline of the lane. A vehicle that is enter-
ing the lane ahead may not be detected until the
vehicle has completely moved in the lane.If this
occurs, the ICC system may warn you by
blinking the system indicator and sounding
the chime. The driver may have to manually control the proper distance away from ve-
hicle traveling ahead.
LSD0106
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When driving on some roads, such as winding,
hilly, curved, narrow, or roads which are under
construction, the ICC sensor may detect vehicles
in a different lane, or may temporarily not detect a
vehicle traveling ahead. This may cause the ICC
system to decelerate or accelerate the vehicle.
The detection of vehicles can be affected by
vehicle operation (steering maneuver or driving
position in the lane) or vehicle condition.If this
occurs, the ICC system may warn you by
blinking the system indicator and sounding
the chime unexpectedly. You will have to
manually control the proper distance away
from the vehicle traveling ahead. When driving on the freeway at a set speed and
approaching a slower traveling vehicle ahead, the
ICC will adjust the speed to maintain the dis-
tance, selected by the driver, from the vehicle
ahead. If the vehicle ahead changes lanes or exits
the freeway, the ICC system will accelerate and
maintain the speed up to the set speed. Pay
attention to the driving operation to maintain con-
trol of the vehicle as it accelerates to the set
speed.
The vehicle may not maintain the set speed on
winding or hilly roads. If this happens, drive with-
out the ICC system.
LSD0107LSD0108
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NOTE:
The approach warning chime may sound
and the system display may blink when the
ICC sensor detects some reflectors
1
which are fitted on vehicles in other lanes
or on the side of the road. This may cause
the ICC system to decelerate or accelerate
the vehicle. The ICC sensor may detect
these reflectors when the vehicle is driven
on winding roads, hilly roads or when en-
tering or exiting a curve. The ICC sensor
may also detect reflectors on narrow roads
or in road construction zones. In these
cases you will have to manually control the
proper distance ahead of your vehicle.
Also, the sensor sensitivity can be affected by
vehicle operation (steering maneuver or driving
position in the lane) or the traffic condition (for
example, if a vehicle is being driven with some
damage) .
Automatic cancellation
A chime sounds under the following conditions
and the control is automatically canceled.● When the vehicle speed falls below approxi-
mately 20 MPH (32 km/h)
● When the selector lever is shifted to a posi-
tion other than D (Drive) , 4, 3, 2, or 1, includ-
ing the manual shift mode ●
When the wiper is operated
● When the parking brake is applied
● When the VDC is turned off
● When the VDC operates
LSD0118
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Warning light and display
Condition A
The chime sounds and the Intelligent Cruise
Control system is canceled automatically in the
conditions described below. The CRUISE indica-
tor light will appear in the vehicle information
display. Part of the system display will come on or
blink, making it impossible to set.● When the VDC is turned off
● When the VDC operates
● When a tire slips ●
When strong light (sunlight, etc.) is directly
shining on the front of the vehicle
Action to take:
When the conditions listed above are no longer
present, turn the system off using the Intelligent
Cruise Control ON/OFF Switch. Turn the ICC
system back on to use the system.
Condition B
When the sensor window is dirty, making it im-
possible to detect a vehicle ahead, the ICC sys-
tem is automatically canceled.
The chime sounds and the system warning light
(Orange) will come on in the instrument panel
and the set distance indicators will blink in the
vehicle information display.
Action to take:
If the warning light comes on, park the vehicle in a
safe place, turn the engine off. Clean the sensor
window with a soft cloth and then perform the
settings again.
WSD0220WSD0221
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Condition C
When the ICC system is not operating properly,
the chime sounds and the orange system warn-
ing light will illuminate in the instrument panel.
Action to take:
If the warning light comes on, park the vehicle in a
safe place. Turn the engine off and then perform
the settings again.If it is not possible to set the system or the
indicator stays on, it may indicate that the
system is malfunctioning. Although the ve-
hicle is still driveable under normal condi-
tions, have the vehicle checked at an
INFINITI dealer.
Sensor maintenance
The sensor for the ICC system1is located
below the front bumper.
To keep the ICC system operating properly, be
sure to observe the following:
● Always keep the sensor clean. Do not use
alcohol, benzine or thinner to clean the sen-
sor. To clean the sensor, wipe softly with a
cloth dampened with a diluted mild cleaning
agent and rinse with water then wipe with a
dry cloth.
WSD0222LSD0105
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●Do not impact the areas around the sensor.
Do not touch or remove the screw located
on the sensor. Doing so could cause failure
or malfunction. If the sensor is deformed due
to an accident, contact an INFINITI dealer.
● Do not attach a sticker (including transpar-
ent material) or install an accessory near the
sensor. This could cause failure or malfunc-
tion.
CONVENTIONAL (FIXED SPEED)
CRUISE CONTROL MODE
This mode allows driving at a speed between 25
to 89 MPH (40 to 144 km/h) without keeping
your foot on the accelerator pedal.
WARNING
● In the conventional (fixed speed) cruise
control mode, a warning chime does
not sound to warn you if you are too
close to the vehicle ahead, as neither
the presence of the vehicle ahead nor
the vehicle-to-vehicle distance is
detected.
● Pay special attention to the distance
between your vehicle and the vehicle
ahead of you or a collision could occur. ●
Always confirm the setting in the Intel-
ligent Cruise Control system display.
● Do not use the conventional (fixed
speed) cruise control mode when driv-
ing under the following conditions:
– When it is not possible to keep the vehicle at a set speed.
– In heavy traffic or in traffic that varies in speed.
– On winding or hilly roads.
– On slippery roads (rain, snow, ice, etc.) .
– In very windy areas.
Doing so could cause a loss of vehicle
control and result in an accident.
Conventional (fixed speed) cruise
control mode display and switch
The display is located within the vehicle informa-
tion display.
1. Intelligent Cruise Control system display
2. ICC system warning light (Orange) The light comes on if there is a malfunction in
the ICC system and is illuminated in the
instrument panel.
3. CRUISE indicator light Indicates that the ON/OFF switch is ON and
appears in the vehicle information display.
WSD0209
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BRAKE ASSIST
When the force applied to the brake pedal ex-
ceeds a certain level, the Brake Assist is acti-
vated, generating greater braking force than a
conventional brake booster even with light pedal
force.
WARNING
The Brake Assist is only an aid to assist
braking operation and is not a collision
warning or avoidance device. It is the driv-
er’s responsibility to stay alert, drive
safely and be in control of the vehicle at
all times.
PREVIEW FUNCTION
When the Preview Function identifies the need to
apply emergency braking by sensing a vehicle
ahead in the same lane and the distance and
relative speed from it, it applies the brake pre-
pressure before the driver depresses the brake
pedal and helps improve brake response by re-
ducing pedal free play.●
This system will not operate when the ve-
hicle is moving at approximately 20 MPH (32
km/h) or less.
● The pre-pressure function ceases when the
following conditions are met:
a. When the driver depresses the accelerator pedal or the brake pedal.
b. If the driver does not operate the accelerator or brake pedal within approximately 1 second.
●The sensor will not detect:
a. Pedestrians or objects in the roadway
b. Oncoming vehicles in the same lane
c. Motorcycles or scooters traveling offset in the travel lane as illustrated
LSD0124
BRAKE ASSIST (WITH PREVIEW
FUNCTION) (for Intelligent Cruise
Control System equipped models)
5-38Starting and driving
REVIEW COPY—2010 Infiniti QX56 (iwz)
Owners Manual (owners)—USA_English (nna)
02/12/09—debbie