2014 INFINITI Q50 check engine

5-78Starting and driving
.When the parking brake is applied.
. When the VDC operates (including the
traction control system)
. When a tire slips
JVS0306X
Warning
When the system is not operating properly,
the chime sounds and the color of the
cruise indicator will change to orange.
Action to take:
If the color of the cruise indicator changes
to orange, park the vehicle in a safe place.
Turn the engine off, restart the engine,
resume driving and then perform the
setting again.
If it is not possible to set or the indicator
stays on, it may indicate that the system is
malfunctioning. Although the vehicle is
still driveable under normal conditions, have the vehicle checked at an INFINITI
retailer.

5-88Starting and driving
structed, making it impossible to detect a
vehicle ahead, the DCA system is auto-
matically canceled.
The chime will sound, the driver assist
system forward indicator (orange) and the
“front radar obstruction”warning message
will appear in the vehicle information
display.
Action to take:
If the driver assist system forward indicator
(orange) and the warning message appear,
park the vehicle in a safe place, turn the
engine off. When the radar signal is
temporarily interrupted, clean the sensor
area of the front bumper and restart the
engine. If the warning message continues
to be displayed, have the DCA system
checked by an INFINITI retailer.
Condition C:
When the DCA system is not operating
properly, the chime sounds, the driver
assist system forward indicator (orange)
and the system “malfunction” warning
message will appear in the vehicle infor-
mation display. Action to take:
If the driver assist system forward indicator
(orange) and the warning message appear,
park the vehicle in a safe place. Turn the
engine off, restart the engine, and turn on
the DCA system 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
vehicle is still driveable under normal
conditions, have the vehicle checked at
an INFINITI retailer.
Sensor maintenance
The sensor for the DCA system is common
with the Intelligent Cruise Control (ICC)
system and is located behind the lower
grille of the front bumper.
For the sensor maintenance, see
“Intelli-
gent Cruise Control (ICC) system” (P.5-58).
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
approved by the party responsible for
compliance 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 de-
vice.

5-92Starting and driving
JVS0299X
Forward emergency braking system warn-ing light (orange)
When the forward emergency braking
system is turned off, the forward emer-
gency braking system warning light (or-
ange) will illuminate.
The forward emergency braking system will
remain ON or OFF unless the setting is
changed on the lower display. This setting
is also linked with the log-in function. (See
“Log-in function” (P.3-14) and the Infiniti
InTouch Owner’ s Manual for the log-in
function.) NOTE:
When the forward emergency braking
system setting is turned ON or OFF, the
predictive forward collision warning sys-
tem is also turned ON or OFF simulta-
neously.
System temporarily unavailable
Condition A:
When the radar sensor picks up interfer-
ence from another radar source, making it
impossible to detect a vehicle ahead, the
forward emergency braking system is
automatically turned off. The forward
emergency braking system warning light
(orange) and the driver assist system
forward indicator (orange) will illuminate.
Action to take:
When the above conditions no longer exist,
the forward emergency braking system will
resume automatically.
Condition B:
When the sensor area of the front bumper
is covered with dirt or is obstructed,
making it impossible to detect a vehicle
ahead, the forward emergency braking
system is automatically turned off. The
forward emergency braking system warn-ing light (orange) and the driver assist
system forward indicator (orange) will
illuminate and the
“front radar obstruc-
tion” warning message will appear in the
vehicle information display.
Action to take:
If the warning light (orange) comes on,
park the vehicle in a safe place, and turn
the engine off. Clean the radar cover on
lower grille with a soft cloth, and restart
the engine. If the warning light continues
to illuminate, have the forward emergency
braking system checked by an INFINITI
retailer.
Condition C:
When the accelerator pedal actuator de-
tects that the internal motor temperature is
high, the forward emergency braking sys-
tem is automatically turned off. The for-
ward emergency braking system warning
light (orange) and the driver assist system
forward indicator (orange) will illuminate
and the “Unavailable High Accelerator
Temperature” warning message will appear
in the vehicle information display.

Action to take:
When the above conditions no longer exist,
the forward emergency braking system will
resume automatically.
System malfunction
If the forward emergency braking system
malfunctions, it will be turned off auto-
matically, a chime will sound, the forward
emergency braking system warning light
(orange) and the driver assist system
forward indicator (orange) will illuminate
and the system“malfunction” warning
message will appear in the vehicle infor-
mation display.
Action to take:
If the warning light (orange) comes on,
park the vehicle in a safe location, turn the
engine off and restart the engine. If the
warning light continues to illuminate, have
the forward emergency braking system
checked by an INFINITI retailer.
Sensor maintenance
For the radar sensor maintenance, see
“Intelligent Cruise Control (ICC) system”
(P.5-58). 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
approved by the party responsible for
compliance 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 de-
vice.
Starting and driving5-93

5-98Starting and driving
Action to take:
When the above conditions no longer exist,
the predictive forward collision warning
system will resume automatically.
Condition B:
When the sensor area of the front bumper
is covered with dirt or is obstructed,
making it impossible to detect a vehicle
ahead, the predictive forward collision
warning system is automatically turned
off. The forward emergency braking system
warning light (orange) and the driver assist
system forward indicator (orange) will
illuminate and the“front radar obstruc-
tion” warning message will appear in the
vehicle information display.
Action to take:
If the warning light (orange) comes on,
park the vehicle in a safe place, and turn
the engine off. Clean the radar cover on
lower grille with a soft cloth, and restart
the engine. If the warning light continues
to illuminate, have the predictive forward
collision warning system checked by an
INFINITI retailer.System malfunction
If the predictive forward collision warning
system malfunctions, it will be turned off
automatically, a chime will sound, the
forward emergency braking system warn-
ing light (orange) and the driver assist
system forward indicator (orange) will
illuminate, and the system malfunction
message will appear in the vehicle infor-
mation display.
Action to take:
If the warning light (orange) illuminates,
park the vehicle in a safe location, turn the
engine off and restart the engine. If the
warning light continues to illuminate, have
the predictive forward collision warning
system checked by an INFINITI retailer.
Sensor maintenance
For the radar sensor maintenance, see
“Intelligent Cruise Control (ICC) system”
(P.5-58).
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
approved by the party responsible for
compliance 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 de-
vice.

If any malfunction occurs in the Intelligent
All-Wheel Drive (AWD) system while the
engine is running, warning messages
appear in the vehicle information display.
JVS0228M
If the“AWD Error” warning*1appears,
there may be a malfunction in the Intelli-
gent AWD system. Reduce vehicle speed
and have your vehicle checked by an
INFINITI retailer as soon as possible.
The “AWD High Temp.” (high temperature)
warning
*2may appear while trying to free a stuck vehicle due to increased oil
temperature. The driving mode may change
to Two-Wheel Drive (2WD). If this warning
is displayed, stop the vehicle with the
engine idling, as soon as it is safe to do so.
Then if the warning turns off, you can
continue driving.
The
“Tire Size Incorrect” warning
*3may
appear if there is a large difference
between the diameters of front and rear
wheels. Pull off the road in a safe area,
with the engine idling. Check that all tire
sizes are the same, that the tire pressure is
correct and that the tires are not exces-
sively worn.
If any warning message continues to be
displayed, have your vehicle checked by an
INFINITI retailer as soon as possible.
WARNING
. For AWD equipped vehicles, do not
attempt to raise two wheels off the
ground and shift the transmission to
any drive or reverse position with the
engine running. Doing so may result in
drivetrain damage or unexpected vehicle
movement which could result in serious
vehicle damage or personal injury.
Starting and driving5-101
INTELLIGENT ALL-WHEEL DRIVE (AWD) (if so
equipped)

5-102Starting and driving
.Do not attempt to test an AWD equipped
vehicle on a 2-wheel dynamometer (such
as the dynamometers used by some
states for emissions testing) or similar
equipment even if the other two wheels
are raised off the ground. Make sure that
you inform the test facility personnel
that your vehicle is equipped with AWD
before it is placed on a dynamometer.
Using the wrong test equipment may
result in drivetrain damage or unex-
pected vehicle movement which could
result in serious vehicle damage or
personal injury.
CAUTION
.Do not operate the engine on a free
roller when any of the wheels are raised.
. If the “AWD Error” warning appears
while driving there may be a malfunction
in the AWD system. Reduce the vehicle
speed and have your vehicle checked by
an INFINITI retailer as soon as possible.
. If the “AWD Error” warning remains on
after the above operation, have your
vehicle checked by an INFINITI retailer as soon as possible.
. The power train may be damaged if you
continue driving with the “AWD Error”
warning on.

5-104Starting and driving
HYDRAULIC POWER STEERING TYPE
WARNING
If the engine is not running or is turned off
while driving, the power assist for the
steering will not work. Steering will be
harder to operate.
The power assisted steering uses a hy-
draulic pump, driven by the engine, to
assist steering.
If the engine stops or the drive belt breaks,
you will still have control of the vehicle.
However, much greater steering effort is
needed, especially in sharp turns and at
low speeds.
DIRECT ADAPTIVE STEERING TYPE
WARNING
When the power steering warning light
illuminates with the engine running, the
power assist for the steering will cease
operation. You will still have control of the
vehicle, but the steering will be harder to
operate.
CAUTION
.If wheels or tires other than the INFINITI
recommended ones are used, Direct
Adaptive Steering may not operate
properly and the power steering warning
light may illuminate.
. 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 deteriorated, Direct
Adaptive Steering may not operate
properly and the power steering warning
light may illuminate.
. Do not modify the vehicle’s steering. If
steering parts are not INFINITI recom-
mended for your vehicle or are extremely
deteriorated, Direct Adaptive Steering
may not operate properly and the power
steering warning light may illuminate.
. If the VDC warning light illuminates, the
power steering warning light may also
illuminate at the same time. Stop the
vehicle in a safe location, turn the
engine off and restart the engine. If the
power steering warning light continues to illuminate, have the system checked
by an INFNITI retailer. For VDC system,
see
“Vehicle Dynamic Control (VDC)
system” (P.5-108).
. Do not place the ignition switch is in the
ON position while the steering wheel or
a tire is removed.
. Do not turn the steering wheel as much
as possible while the ignition switch is
in any position other than the ON
position.
. Installing an accessory on the steering
wheel, or changing the steering wheel,
may reduce the steering performance.
Direct Adaptive Steering is designed to
control the steering force and steering
angle according to the vehicle speed and
amount of turning of the steering wheel.
The steering characteristic can be selected
with the INFINITI Drive Mode Selector. See
“INFINITI Drive Mode Selector” (P.5-21).
When the steering wheel is operated
repeatedly or continuously while parking
or driving at a very low speed, the power
assist for the steering wheel will be
reduced and the steering wheel may be
slightly turned even when driving on a
POWER STEERING