ABS INFINITI QX 2011 User Guide

NOTE:
The approach warning chime may sound and the
system display may blink when the ICC sensor
detects some reflectors
Awhich 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 de-
tect these reflectors when the vehicle is driven
on winding roads, hilly roads or when entering
or exiting a curve. The ICC sensor may also de-
tect reflectors on narrow roads or in road con-
struction 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 traffic or vehicle condi-
tion (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 15 MPH (24 km/h)
● When the system judges the vehicle is at a
standstill
● When the selector lever is shifted to the N
(Neutral) position
● When the windshield wipers are operating at
high speed. The system may cancel when
the wipers are set to the AUTO position.
● When the VDC is turned off
● When the ABS or VDC operates
● When the parking brake is applied
● When the SNOW mode switch is pushed on.
● When the 4WD shift switch is in the 4H or 4L
position (for 4WD models) ●
When driving into a strong light (i.e., sun-
light)
● When distance measurement becomes im-
paired due to adhesion of dirt or obstruction
to the sensor
● When a wheel slips
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Starting and driving5-55

Warning light and display
Condition A :
The chime sounds and the Intelligent Cruise
Control (ICC) system is canceled automatically
in the conditions described below. Part of the
system display will come on or blink, making it
impossible to set.
●When the VDC is turned off
● When the ABS or VDC operates
● When a tire slips ●
When driving into a strong light (i.e., sun-
light)
● When the SNOW mode switch is pushed on
● When the 4WD shift switch is in the 4H or 4L
position
Action to take :
When the conditions listed above are no longer
present, turn the system off using the ICC MAIN
switch. Turn the ICC system back on to use the
system.
Condition B :
When the sensor window is dirty, making it
impossible to detect a vehicle ahead, the ICC
system is automatically canceled.
The chime sounds and the ICC system warning
light (orange) will come on and the CLEAN
SENSOR indicator will appear.
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.
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PRECAUTIONS ON DISTANCE CONTROL
ASSIST SYSTEM
The system is intended to assist the driver to
keep a following distance from the vehicle
ahead traveling in the same lane and direction.
If the distance sensor
Adetects a slower
moving vehicle ahead, the system will reduce
the vehicle speed to help assist the driver to
maintain a following distance.
The system automatically controls the throttle
and applies the brakes (up to 25% of vehicle
braking power) if necessary. The detection range of the sensor is approxi-
mately 390 ft (120 m) ahead.
WARNING
●
This system is only an aid to assist the driver
and is not a collision warning or avoidance
device. It is the driver’s responsibility to stay
alert, drive safely and be in control of the
vehicle at all times.
● This system will not adapt automatically to
road conditions. Do not use the system on
roads with sharp curves, or on icy roads, in
heavy rain or in fog.
The distance sensor will not detect the follow-
ing objects:
● Stationary and slow moving vehicles
● Pedestrians or objects in the roadway
● Oncoming vehicles in the same lane
● Motorcycles traveling offset in the travel
lane
WARNING
● As there is a performance limit to the dis-
tance control function, never rely solely on
the Distance Control Assist system. This
system does not correct careless, inatten-
tive or absent-minded driving, or overcome
poor visibility in rain, fog, or other bad
weather. Decelerate the vehicle speed by de-
pressing the brake pedal, depending on the
distance to the vehicle ahead and the sur-
rounding circumstances in order to maintain
a safe distance between vehicles.
● The system may not function properly under
the following conditions. To avoid accidents,
never use the Distance Control Assist sys-
tem under the following conditions:
– On roads with sharp curves
– On slippery road surfaces such as on ice or snow, etc.
– On off-road surfaces such as on sand or rock, etc.
– During bad weather (rain, fog, snow, etc.)
– When strong light (for example, at sun- rise or sunset) is directly shining on the
front of the vehicle
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Starting and driving5-63

Under the following conditions, the Distance
Control Assist system will not operate and the
Distance Control Assist (DCA) system switch
indicator will blink:
●When the SNOW mode is pushed (SNOW
mode switch) (To use the DCA system, turn
off the SNOW mode switch, then turn on the
dynamic driver assistance switch.)
For details about the SNOW mode switch,
see “SNOW MODE” later in this section. ●
When the 4WD shift switch is in the 4H or 4L
position. (To use the DCA system, place the
4WD shift switch in the AUTO position, then
turn on the dynamic driver assistance switch
(for 4WD models).
For details about the 4WD shift switch, see
“INFINITI ALL-MODE 4WD” earlier in this
section.
● When the VDC system is off (To use the DCA
system, turn on the VDC, then push the
dynamic driver assistance switch.)
For details about the VDC system, see “VE-
HICLE DYNAMIC CONTROL (VDC) SYSTEM”
later in this section.
● When ABS or VDC (including the traction
control system) is operating
● When driving into a strong light (i.e., sun-
light) When the Conventional (fixed speed) cruise
control mode is operating, the DCA system will
not operate. (To use the DCA system, turn the
Conventional (fixed speed) cruise control mode
off, then push the dynamic driver assistance
switch.)
For details about the Conventional (fixed speed)
cruise control mode, see “INTELLIGENT CRUISE
CONTROL (ICC) SYSTEM” earlier in this section.
When the engine is turned off, the system is
automatically turned off.
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NOTE:
The approach warning chime may sound and the
system display may blink when the sensor de-
tects some reflectors
Awhich are fitted on ve-
hicles in other lanes or on the side of the road.
This may cause the DCA system to operate inap-
propriately. The sensor may detect these reflec-
tors when the vehicle is driven on winding roads,
hilly roads or when entering or exiting a curve.
The 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 traffic or vehicle condi-
tion (for example, if a vehicle is being driven
with some damage).
Automatic cancellation
Condition A :
Under the following conditions, the Distance
Control Assist system is automatically can-
celed. The chime will sound and the Distance
Control Assist (DCA) system switch indicator
will blink. The system will not be able to be set.
●
When the VDC system is turned off
● When the VDC or ABS (including the traction
control system) operates
● When the SNOW mode switch is turned on.
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Starting and driving5-73

●The sensor will not detect:
a) Pedestrians or objects in the roadway
b) Oncoming vehicles in the same lane
c) Motorcycles traveling offset in the travel lane as illustrated
WARNING
●This system is only an aid to assist braking
operation and is not a collision warning or
avoidance device. It is the driver’s responsi-
bility to stay alert, drive safely and be in
control of the vehicle at all times. ●
As there is a performance limit to the Pre-
view Function, never rely solely on this sys-
tem. This system does not correct careless
inattentive or absent-minded driving, or
overcome poor visibility in rain, fog, or other
bad weather. Reduce vehicle speed by de-
pressing the brake pedal, in order to main-
tain a safe distance between vehicles.
● The system may not detect the vehicle in
front of you in certain road or weather condi-
tions. The Preview Function may not operate
properly under the following conditions. The
vehicle is still driveable under normal condi-
tions and the Brake Assist will operate.
– When rain, snow or dirt adhere to the sys- tem sensor
– When strong light (for example, at sun- rise or sunset) is directly shining on the
front of the vehicle
– Winding or hilly roads may cause the sen- sor to temporarily not detect a vehicle in
the same lane or may detect objects or
vehicles in other lanes.
– Vehicle position in the lane may cause the sensor to temporarily not detect a vehicle
in the same lane or may detect objects or
vehicles in other lanes. ●
When the Preview Function operates, the
brake pedal may move slightly and may
make a small noise. This is not a system
malfunction.
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5-96Starting and driving

Warning light and display
When the Preview Function is not operating
properly, the chime sounds and the system
warning light (orange) will come on.
Action to take :
If the warning light comes on, park the vehicle
in a safe place. Turn the engine off, restart the
engine and resume driving.
If the indicator stays on, it may indicate that the
Preview Function is malfunctioning (the brake is
operative). Although the Vehicle is still drive-
able under normal conditions, have the vehicle
checked at an INFINITI retailer.
How to handle the sensor
The sensor for the Preview Function is common
with Intelligent Cruise Control and is located
below the front bumper.
To keep the Preview Function operating prop-
erly, be sure to observe the following:
●Always keep the sensor clean. Wipe with a
soft cloth carefully so as not to damage the
sensor.
● Do not strike or damage 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
damaged due to an accident, contact an
INFINITI retailer.
● Do not attach a sticker (including transpar-
ent material) or install an accessory near the
sensor. This could cause failure or malfunc-
tion.
ANTI-LOCK BRAKING SYSTEM (ABS)
WARNING
● The Anti-lock Braking System (ABS) is a so-
phisticated device, but it cannot prevent ac-
cidents resulting from careless or dangerous
driving techniques. It can help maintain ve-
hicle control during braking on slippery sur-
faces. Remember that stopping distances on
slippery surfaces will be longer than on nor-
mal surfaces even with ABS. Stopping dis-
tances may also be longer on rough, gravel
or snow covered roads, or if you are using
tire chains. Always maintain a safe distance
from the vehicle in front of you. Ultimately,
the driver is responsible for safety.
● Tire type and condition may also affect brak-
ing effectiveness.
– When replacing tires, install the specified size of tires on all four wheels.
–
When installing a spare tire, make sure that
it is the proper size and type as specified on
the Tire and Loading Information label. See
“TIRE AND LOADING INFORMATION LABEL”
in the “9. Technical and consumer informa-
tion” section of this manual.
– For detailed information, see “WHEELS AND TIRES” in the “8. Maintenance and
do-it-yourself” section of this manual.
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The Anti-lock Braking System (ABS) controls the
brakes so the wheels do not lock during hard
braking or when braking on slippery surfaces.
The system detects the rotation speed at each
wheel and varies the brake fluid pressure to
prevent each wheel from locking and sliding. By
preventing each wheel from locking, the system
helps the driver maintain steering control and
helps to minimize swerving and spinning on
slippery surfaces.
Using the system
Depress the brake pedal and hold it down.
Depress the brake pedal with firm steady pres-
sure, but do not pump the brakes. The ABS will
operate to prevent the wheels from locking up.
Steer the vehicle to avoid obstacles.
WARNING
Do not pump the brake pedal. Doing so may
result in increased stopping distances.
Self-test feature
The ABS includes electronic sensors, electric
pumps, hydraulic solenoids and a computer.
The computer has a built-in diagnostic feature
that tests the system each time you start the
engine and move the vehicle at a low speed in
forward or reverse. When the self-test occurs,you may hear a “clunk” noise and/or feel a
pulsation in the brake pedal. This is normal and
does not indicate a malfunction. If the computer
senses a malfunction, it switches the ABS off
and illuminates the ABS warning light on the
instrument panel. The brake system then oper-
ates normally, but without anti-lock assistance.
If the ABS warning light illuminates during the
self-test or while driving, have the vehicle
checked by an INFINITI retailer.
Normal operation
The ABS operates at speeds above 3 to 6 MPH
(5 to 10 km/h). The speed varies according to
road conditions.
When the ABS senses that one or more wheels
are close to locking up, the actuator rapidly
applies and releases hydraulic pressure. This
action is similar to pumping the brakes very
quickly. You may feel a pulsation in the brake
pedal and hear a noise from under the hood or
feel a vibration from the actuator when it is
operating. This is normal and indicates that the
ABS is operating properly. However, the pulsa-
tion may indicate that road conditions are haz-
ardous and extra care is required while driving.
The Vehicle Dynamic Control (VDC) system uses
various sensors to monitor driver inputs and
vehicle motion. Under certain driving condi-
tions, the VDC system helps to perform the
following functions.
●
Controls brake pressure to reduce wheel slip
on one slipping drive wheel so power is
transferred to a non slipping drive wheel on
the same axle.
● Controls brake pressure and engine output
to reduce drive wheel slip based on vehicle
speed (traction control function).
● Controls brake pressure at individual wheels
and engine output to help the driver main-
tain control of the vehicle in the following
conditions:
– understeer (vehicle tends to not follow the steered path despite increased steer-
ing input)
– oversteer (vehicle tends to spin due to certain road or driving conditions).
The VDC system can help the driver to maintain
control of the vehicle, but it cannot prevent loss
of vehicle control in all driving situations.
VEHICLE DYNAMIC CONTROL (VDC)
SYSTEM
5-98Starting and driving

When the VDC system operates, the VDC warn-
ing lightin the instrument panel flashes
so note the following:
● The road may be slippery or the system may
determine some action is required to help
keep the vehicle on the steered path.
● You may feel a pulsation in the brake pedal
and hear a noise or vibration from under the
hood. This is normal and indicates that the
VDC system is working properly.
● Adjust your speed and driving to the road
conditions.
If a malfunction occurs in the system, the VDC
warning light
illuminates in the instru-
ment panel. The VDC system automatically
turns off.
The VDC OFF switch is used to turn off the VDC
system. The VDC off indicator
illuminates
to indicate the VDC system is off. When the VDC
switch is used to turn off the system, the VDC
system still operates to prevent one drive wheel
from slipping by transferring power to a non
slipping drive wheel. The VDC warning light
flashes if this occurs. All other VDC
functions are off, and the VDC warning light
will not flash. The VDC system is auto-
matically reset to on when the ignition switch is
placed in the off position then back to the on
position. When the 4L position is selected with the 4WD
shift switch, the VDC system is disabled and the
VDC off indicator light illuminates.
See “Vehicle Dynamic Control (VDC) warning
light” in the “2. Instruments and controls”
section and “Vehicle Dynamic Control (VDC) off
indicator light” in the “2. Instruments and con-
trols” section.
The computer has a built-in diagnostic feature
that tests the system each time you start the
engine and move the vehicle forward or in
reverse at a slow speed. When the self-test
occurs, you may hear a “clunk” noise and/or
feel a pulsation in the brake pedal. This is
normal and is not an indication of a malfunc-
tion.
WARNING
●
The VDC system is designed to help improve
driving stability but does not prevent acci-
dents due to abrupt steering operation at
high speeds or by careless or dangerous
driving techniques. Reduce vehicle speed
and be especially careful when driving and
cornering on slippery surfaces and always
drive carefully. ●
Do not modify the vehicle’s suspension. If
suspension parts such as shock absorbers,
struts, springs, stabilizer bars, bushings
and wheels are not INFINITI recommended
for your vehicle or are extremely deterio-
rated, the VDC system may not operate prop-
erly. This could adversely affect vehicle han-
dling performance, and the VDC warning
light
may illuminate.
● If brake related parts such as brake pads,
rotors and calipers are not INFINITI recom-
mended or are extremely deteriorated, the
VDC system may not operate properly and
the VDC warning light
may illuminate.
● If engine control related parts are not
INFINITI recommended or are extremely de-
teriorated, the VDC warning light
may
illuminate.
● When driving on extremely inclined surfaces
such as higher banked corners, the VDC sys-
tem may not operate properly and the VDC
warning light
may illuminate. Do not
drive on these types of roads.
● When driving on an unstable surface such as
a turntable, ferry, elevator or ramp, the VDC
warning light
may illuminate. This is
not a malfunction. Restart the engine after
driving onto a stable surface.
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NOTE:
If the extended storage switch malfunctions or if
the fuse is open, it is not necessary to replace
the switch. In this case, remove the extended
storage switch and replace it with a new fuse of
the same rating.
How to remove the extended storage switch:
1. To remove the extended storage switch,be sure the ignition switch is in the OFF or
LOCK position.
2. Be sure the headlight switch is in the OFF position.
3. Remove the fuse box cover.
4. Pinch the locking tabs
1found on each
side of the storage switch.
5. Pull the storage switch straight out from the fuse box
2.
Replace the battery as follows:
1. Release the lock knob at the back of the
Intelligent Key and remove the mechanical
key. 2. Insert a small screwdriver into the slit of
the corner and twist it to separate the
upper part from the lower part. Use a
cloth to protect the casing.
3. Replace the battery with a new one.
Recommended battery: CR2025 or equiva-
lent.
● Do not touch the internal circuit and
electric terminals as it could cause a
malfunction.
● Hold the battery by the edges. Holding
the battery across the contact points will
seriously deplete the storage capacity.
● Make sure that the + side faces the
bottom of the case.
SDI2451
INTELLIGENT KEY BATTERY REPLACEMENT
8-24Maintenance and do-it-yourself