Infiniti QX: Lane Departure Prevention (LDP) system
Precautions on LDP system
WARNING
► The LDP system will not steer the vehicle
or prevent loss of control. It is the
driver’s responsibility to stay alert, drive
safely, keep the vehicle in the traveling
lane, and be in control of vehicle at all
times.
► The LDP system is primarily intended for
use on well-developed freeways or highways.
It may not detect the lane markers
in certain roads, weather or driving
conditions.
► Using the LDP system under some
conditions of road, lane marker or
weather, or when you change lanes
without using the lane change signal
could lead to an unexpected system
operation. In such conditions, you need
to correct the vehicle’s direction with
your steering operation to avoid accidents.
► When the LDP system is operating, avoid
excessive or sudden steering maneuvers.
Otherwise, you could lose control
of the vehicle.
► The LDP system will not operate at
speeds below approximately 45 MPH
(70 km/h) or if it cannot detect lane
markers.
► The LDP system may not function
properly under the following conditions,
and do not use the LDP system:
— During bad weather (rain, fog, snow,
wind, etc.).
— When driving on slippery roads,
such as on ice or snow, etc.
— When driving off-road such as on
sand or rock, etc.
— When driving on winding or uneven
roads.
— When there is a lane closure due to
road repairs.
— When driving in a makeshift lane.
— When driving on roads where the
lane width is too narrow.
— When driving without normal tire
conditions (for example, tire wear,
low tire pressure, installation of
spare tire, tire chains, non-standard
wheels).
— When the vehicle is equipped with
non-original brake parts or suspension
parts.
— When towing a trailer or other
vehicle.
► If the LDP system malfunctions, it will
cancel automatically. The lane departure
warning light (orange) on the instrument
panel will illuminate.
► If the lane departure warning light
(orange) illuminates, pull off the road
to a safe location and stop the vehicle.
Turn the engine off and restart the
engine. If the warning light (orange)
continues to illuminate, have the LDP
system checked by an INFINITI retailer.
► Excessive noise will interfere with the
warning chime sound, and the chime
may not be heard.
The functions of the LDP system (warning
and brake control assist) may or may not
operate properly under the following conditions:
► On roads where there are multiple
parallel lane markers; lane markers
that are faded or not painted clearly;
yellow painted lane markers; non-standard
lane markers; or lane markers
covered with water, dirt, snow, etc.
► On roads where discontinued lane
markers are still detectable.
► On roads where there are sharp curves.
► On roads where there are sharply
contrasting objects, such as shadows,
snow, water, wheel ruts, seams or lines
remaining after road repairs. (The LDP
system could detect these items as
lane markers.).
► On roads where the traveling lane
merges or separates.
► When the vehicle’s traveling direction
does not align with the lane marker.
► When traveling close to the vehicle in
front of you, which obstructs the lane
camera unit detection range.
► When rain, snow or dirt adheres to the
windshield in front of the lane camera
unit.
► When the headlights are not bright due
to dirt on the lens or if the aiming is not
adjusted properly.
► When strong light enters the lane
camera unit. (For example, the light
directly shines on the front of the
vehicle at sunrise or sunset.).
► When a sudden change in brightness
occurs. (For example, when the vehicle
enters or exits a tunnel or under a
bridge.).
While the LDP system is operating, you
may hear a sound of brake operation. This
is normal and indicates that the LDP
system is operating properly.
LDP system operation
The LDP system provides a lane departure warning and brake control assistance when the vehicle is driven at speeds of approximately 45 MPH (70 km/h) and above. When the vehicle approaches either the left or the right side of the traveling lane, a warning chime will sound and the lane departure warning light (orange) on the instrument panel will blink to alert the driver. Then, the LDP system will automatically apply the brakes for a short period of time to help assist the driver to return the vehicle to the center of the traveling lane. The warning and assist functions will stop when the vehicle returns to a position inside of the lane marker.
The LDP system turns on when the dynamic driver assistance switch on the steering wheel is pushed when the “Lane Departure Prevention” is enabled in the settings menu on the center display. The LDP ON indicator light (green) on the instrument panel illuminates when the LDP system is turned on.
How to enable/disable the LDP system using the settings menu
Perform the following steps to enable or disable the LDP system. 1. Push the SETTING 1 button and highlight the “Driver Assistance” key on the display using the INFINITI controller. Then push the ENTER 2 button. 2. Highlight the “Dynamic Assistance Settings” key, and push the ENTER 2 button.
3. Highlight the “Lane Departure Prevention” key, select ON (enabled) or OFF (disabled) and push the ENTER 2 button.
For the Blind Spot InterventionTM and DCA systems, see“Blind Spot Warning (BSW) system/Blind Spot InterventionTM system” later in this section and “Distance Control Assist (DCA) system” later in this section.
Automatic deactivation
Condition A:
The warning and assist functions of the
LDP system are not designed to work under
the following conditions:
► When you operate the lane change
signal and change the traveling lanes
in the direction of the signal. (The LDP
system will be deactivated for approximately
2 seconds after the lane change
signal is turned off.).
► When the vehicle speed lowers to less
than approximately 45 MPH (70 km/h).
► When the Blind Spot InterventionTM
system activates an audible warning
or brake control.
After the above conditions have finished
and the necessary operating conditions are
satisfied, the warning and assist functions
will resume.
Condition B:
The assist function of the LDP system is not
designed to work under the following
conditions (warning is still functional):
► When the brake pedal is depressed.
► When the steering wheel is turned as
far as necessary for the vehicle to
change lanes.
► When the accelerator pedal is depressed
while the brake control assist
is provided.
► When the Intelligent Cruise Control (ICC)
approach warning occurs.
► When the hazard warning flashers are
operated.
► When driving on a curve at high speed.
After the above conditions have finished
and the necessary operating conditions are
satisfied, the LDP brake control assist
function will resume.
Condition C:
Under the following conditions, a beep will
sound and the LDP system will be canceled
automatically. The LDP ON indicator light
will blink in green, and the LDP system
cannot be activated:
► When the VDC system (except TCS
function) or ABS operates.
► When the VDC system is turned off.
► When the SNOW mode switch is turned
on.
► When the 4WD shift switch is in the 4H
or 4L position (for 4WD models).
Action to take:
When the above conditions no longer exist,
turn off the LDP system by pushing the
dynamic driver assistance switch. Push the
dynamic driver assistance switc
Temporary disabled status at high temperature:
If the vehicle is parked in direct sunlight under high temperature conditions (over approximately 1048F (408C)) and then the LDP system is turned on, the LDP system may be deactivated automatically. The lane departure warning light (orange) will blink. When the interior temperature is reduced, turn off the LDP system by pushing the dynamic driver assistance switch. Push the dynamic driver assistance switch again to turn the LDP system back on.
Lane camera unit maintenance
The lane camera unit 1 for the LDW/LDP
system is located inside the map light
cover. To keep the proper operation of the
LDW/LDP systems and prevent a system
malfunction, be sure to observe the following:
► Always keep the windshield clean.
► Do not attach a sticker (including
transparent material) or install an
accessory near the camera unit.
► Do not place reflective materials, such
as white paper or a mirror, on the
instrument panel. The reflection of
sunlight may adversely affect the camera
unit’s capability of detecting the
lane markers.
► Do not strike or damage the areas
around the camera unit. Do not touch
the camera lens or remove the screw
located on the camera unit. If the
camera unit is damaged due to an
accident, contact an INFINITI retailer.
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