2020 INFINITI Q50 Forward

5-110Starting and driving
could cause failure or malfunction.
. Do not alter, remove or paint the front
bumper. It is recommended you contact
an INFINITI retailer before customizing
or restoring the front bumper.
FCC Notice:
For USA:
This device complies with Part 15 of the
FCC Rules. Operation is subject to the
following two conditions:
1. This device may not cause harmful
interference, and
2. This device must accept any interfer-
ence received, including interference
that may cause undesired operation.
FCC Warning
Changes or modification not expressly ap-
proved by the party responsible for com-
pliance could void the user’s authority to
operate the equipment.
For Canada:
This device complies with Industry Canada
licence-exempt RSS standard(s). Operation
is subject to the following two conditions:
1. This device may not cause interference,
and
2. This device must accept any interfer-
ence, including interference that may
cause undesired operation of the device.
WARNING
Failure to follow the warnings and
instructions for proper use of the PFCW
system could result in serious injury or
death.
.The PFCW system helps warn the
driver before a collision but will not
avoid a collision. It is the driver’s
responsibility to stay alert, drive
safely and be in control of the vehicle
at all times.
The PFCW system can help alert the driver
when there is a sudden braking of a second
vehicle traveling in front of the vehicle ahead
in the same lane.
JVS1123X
The PFCW system uses a radar sensorlocated behind the lower grille of the front
bumper to measure the distance to a second
vehicle ahead in the same lane.
PREDICTIVE FORWARD
COLLISION WARNING (PFCW)

JVS0849X
Driver assist system forward indicator
(on the vehicle information display)
Vehicle ahead detection indicator (on
the vehicle information display)
FEB system warning light (on the
instrument panel)
Lower display
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5-112Starting and driving
JVS0294X
PFCW SYSTEM OPERATION
The PFCW system operates at speeds above
approximately 3 MPH (5 km/h).
If there is a potential risk of a forward
collision, the PFCW system will warn the
driver by blinking the driver assist system
forward indicator and the vehicle ahead
detection indicator, and sounding an audible
alert.

JVS0848X
FEB system warning light (on the
instrument panel)
Driver assist system forward indicator
(on the vehicle information display)
SYSTEM TEMPORARILY UNA-
VAILABLE
Condition A
When the radar sensor picks up interference
from another radar source, making it im-
possible to detect a vehicle ahead, the
PFCW system is automatically turned off.
The FEB system warning light (orange)
and the driver assist system forward indi-
cator (orange)will illuminate.
Action to take:
When the above conditions no longer exist,
the PFCW system will resume automatically.
Condition B
Under the following conditions, making it
impossible to detect a vehicle ahead, the
PFCW system is automatically turned off.
The FEB system warning light (orange)
and the driver assist system forward indi-
cator (orange)will illuminate and the
“front radar obstruction” warning message
will appear in the vehicle information display.
. When the sensor area of the front
bumper is covered with dirt or is ob-
structed
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5-118Starting and driving
Action to take:
If the FEB warning light (orange)
comes
on, stop the vehicle in a safe place, place the
shift lever in the P (Park) position and turn
the engine off. Clean the radar cover on
lower grille with a soft cloth, and restart the
engine. If the FEB warning light (orange)
continues to illuminate, have the PFCW
system checked. It is recommended you visit
an INFINITI retailer for this service.
. When driving on roads with limited road
structures or buildings (for example, long
bridges, deserts, snow fields, driving next
to long walls)
Action to take:
When the above conditions no longer exist,
the PFCW system will resume automatically.
NOTE:
If the FEB system stops working, the PFCW
system will also stop working.
SYSTEM MALFUNCTION
If the PFCW malfunctions, it will be turned
off automatically, a chime will sound, the
FEB system warning light (orange)
and
the driver assist system forward indicator
(orange)
will illuminate, and the system
“malfunction” message will appear in the
vehicle information display.
Action to take:
If the FEB system warning light (orange)
comes on, stop the vehicle in a safe location,
turn the engine off and restart the engine. If
the warning light continues to illuminate,
have the PFCW system checked. It is
recommended you visit an INFINITI retailer
for this service.
JVS1123X
SYSTEM MAINTENANCE
The sensoris located behind the lower
grille of the front bumper.
To keep the system operating properly, be
sure to observe the following:
. Always keep the sensor area of the front
bumper clean.
. Do not strike or damage the areas around
the sensor.
. Do not cover or attach stickers or similar
objects on the front bumper near the
sensor area. This could cause failure or
malfunction.
. Do not attach metallic objects near the
sensor area (brush guard, etc.). This

SD1006MA
WARNING
.Do not stop or park the vehicle over
flammable materials such as dry
grass, waste paper or rags. They
may ignite and cause a fire.
. Never leave the engine running while
the vehicle is unattended.
. Do not leave children unattended
inside the vehicle. They could un-
knowingly activate switches or con-
trols. Unattended children could
become involved in serious accidents. .
To help avoid risk of injury or death
through unintended operation of the
vehicle and/or its systems, do not
leave children, people who require the
assistance of others or pets unat-
tended in your vehicle. Additionally,
the temperature inside a closed ve-
hicle on a warm day can quickly
become high enough to cause a sig-
nificant risk of injury or death to
people and pets.
. Safe parking procedures require that
both the parking brake be applied
and the transmission placed into P
(Park). Failure to do so could cause the vehicle to move unexpectedly or
roll away and result in an accident.
. Make sure the automatic transmis-
sion shift lever has been pushed as far
forward as it can go and cannot be
moved without depressing the foot
brake pedal.
1. Firmly apply the parking brake.
2. Move the shift lever to the P (Park) position.
3. To help prevent the vehicle from rolling into the street when parked on a sloping
drive way, it is a good practice to turn the
wheels as illustrated.
.HEADED DOWNHILL WITH CURB:
Turn the wheels into the curb and
move the vehicle forward until the
curb side wheel gently touches the
curb.
.HEADED UPHILL WITH CURB:
Turn the wheels away from the curb
and move the vehicle back until the
curb side wheel gently touches the
curb.
.HEADED UPHILL OR DOWNHILL,
NO CURB:
Turn the wheels toward the side of
the road so the vehicle will move away
from the center of the road if it
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PARKING/PARKING ON HILLS

5-128Starting and driving
faces will be longer than on normal
surfaces even with ABS. Stopping
distances 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 braking 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 la-
bel” (P.10-13) of this manual.
— For detailed information, see “Wheels and tires” (P.8-26) of
this manual.
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
pressure, 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 dis-
tances.
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 mal-function, it switches the ABS off and
illuminates the ABS warning light on the
instrument panel. The brake system then
operates normally, but without anti-lock
assistance.
If the ABS warning light illuminates during
the self-test or while driving, have the
vehicle checked. It is recommended you visit
an INFINITI retailer for this service.
Normal operation
The ABS operates at speeds above 3 to 6
MPH (5 to 10 km/h).
When the ABS senses that one or more
wheels are close to locking up, the actuator
rapidly applies and releases hydraulic pres-
sure. 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 pulsation may indi-
cate that road conditions are hazardous 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
conditions, 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 out-
put 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 maintain control of the vehicle in
the following conditions:
— understeer (vehicle tends to not follow the steered path despite increased
steering 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.
When the VDC system operates, the VDC
warning light
in 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.
See “Vehicle Dynamic Control (VDC) warn-
ing light” (P.2-15).
If a malfunction occurs in the system, the
VDC warning light
illuminates in the
instrument panel. The VDC system automa-
tically turns off.
The VDC OFF switch is used to turn off the
VDC system. The VDC off indicator light
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,
except for brake force distribution, and the
VDC warning light
will not flash. The
VDC system is automatically reset to on
when the ignition switch is placed in the off
position then back to the on position.
See “Vehicle Dynamic Control (VDC) warn-
ing light” (P.2-15) and “Vehicle Dynamic
Control (VDC) off indicator light” (P.2-17).
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 malfunction.
VDC operation is reduced when the INFINITI
Drive Mode Selector is used to select the
SPORT+ mode (if so equipped). The VDC
system may not operate in the same circum-
stances when compared to operation in the
standard mode. To help prevent accidents
drive carefully, avoid careless or dangerous
driving techniques and be especially careful
when driving and cornering on slippery
surfaces.
BRAKE FORCE DISTRIBUTION
During braking while driving through turns,
the system optimizes the distribution of
force to each of the four wheels depending
on the radius of the turn.
WARNING
.
The VDC system is designed to help
the driver maintain stability but does
not prevent accidents due to abrupt
steering operation at high speeds or
by careless or dangerous driving
Starting and driving5-129
VEHICLE DYNAMIC CONTROL
(VDC) SYSTEM