2018 INFINITI Q70 check engine light

.When the VDC or ABS (including the
traction control system) operates
. When the INFINITI Drive Mode Selector
is turned to the SNOW mode (To use the
DCA system, turn the INFINITI Drive
Mode Selector to a mode other than the
SNOW mode, then turn on the dynamic
driver assistance switch
.)
For details about the INFINITI Drive
Mode Selector, see “INFINITI Drive
Mode Selector” (P.5-20).
. When the radar signal is temporarily
interrupted
Action to take:
When the conditions listed above are no
longer present, turn the system off with the
dynamic driver assistance switch
. Turn the
DCA system back on to use the system.
JVS0482X
Condition B:
The chime sounds and the DCA system
warning light (orange) will come on and the
“FRONT RADAR OBSTRUCTION” warning
will appear.
. When the radar sensor area is covered
with dirt or is obstructed, making it
impossible to detect a vehicle ahead,
the DCA system is automatically can-
celed.
Action to take:
If the warning light comes on, park the
vehicle in a safe place, place the shift lever in
the P (Park) position and turn the engine off.
When the radar signal is temporarily inter-
rupted, clean the sensor area and restart the engine. If the “FRONT RADAR OBSTRUC-
TION” warning continues to be displayed,
have the DCA system checked. It is recom-
mended 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), the system may illuminate
the DCA system warning light (orange)
and display the “FRONT RADAR OB-
STRUCTION” warning.
Action to take:
When the conditions listed above are no
longer present, turn the DCA system back on
to use the system.
Starting and driving5-99

5-100Starting and driving
SSD0999
SYSTEM MALFUNCTION
Condition:
When the DCA system is not operating
properly, the chime sounds and the system
warning light (“CRUISE” 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 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 con-ditions, have the vehicle checked. It is
recommended you visit an INFINITI retailer
for this service.
JVS0462X
SYSTEM MAINTENANCE
The sensor for the DCA systemis located
behind the lower grille of the front bumper.
The DCA system is designed to automati-
cally check the sensor’s operation. When the
sensor is covered with dirt or is obstructed,
the system will automatically be canceled. If
the sensor is covered with ice, a transparent
or translucent vinyl bag, etc., the DCA
system may not detect them. In these
instances, the DCA system may not be able
to decelerate the vehicle properly. Be sure to
check and clean the sensor regularly.
To keep the DCA system operating properly,
be sure to observe the following:

Condition B
In the following conditions, the FEB system
is automatically turned off. The FEB system
warning light (orange)
will illuminate and
the “FRONT RADAR OBSTRUCTION”
warning message will appear in the vehicle
information display.
. The sensor area on the front of the
vehicle is covered with dirt or is ob-
structed.
Action to take:
If the 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 warning light continues to
illuminate, have the FEB system checked. It
is recommended you visit an INFINITI re-
tailer 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 FEB system will resume automatically.
Condition C
When the accelerator pedal actuator detects
that the internal motor temperature is high,
the FEB system is automatically turned off.
The FEB system warning light (orange)
will illuminate.
Action to take:
When the above conditions no longer exist,
the FEB system will resume automatically.
Condition D
When VDC system is OFF, the FEB brake
will not operate. In this case only visible and
audible warning operates. The FEB system
warning light (orange) will illuminate.
Action to take:
When the above conditions no longer exist,
the FEB system will resume automatically.
SYSTEM MALFUNCTION
If the FEB system malfunctions, it will be
turned off automatically, a chime will sound,
the FEB system warning light (orange)
will
illuminate.
Action to take:
If the warning light (orange)
illuminates,
stop the vehicle in a safe location and place
the shift lever in the P (Park) position. Turn
the engine off and restart the engine. If the
warning light continues to illuminate, have the FEB system checked. It is recommended
you visit an INFINITI retailer for this service.
Starting and driving5-107

Condition B
In the following conditions, the PFCW
system is automatically turned off. The
FEB system warning light (orange)
will
illuminate and the “FRONT RADAR OB-
STRUCTION” warning message will appear
in the vehicle information display.
. The sensor area on the front of the
vehicle is covered with dirt or is ob-
structed.
Action to take:
If the 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 warning light 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.
SYSTEM MALFUNCTION
If the PFCW system malfunctions, it will be
turned off automatically, a chime will sound,
the FEB system warning light (orange)
will
illuminate.
Action to take:
If the warning light (orange)
illuminates,
stop the vehicle in a safe location and place
the shift lever in the P (Park) position. Turn
the engine off and restart the engine. If the
warning light continues to illuminate, have
the PFCW system checked. It is recom-
mended you visit an INFINITI retailer for this
service.
JVS0462X
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
Starting and driving5-115

5-118Starting and driving
SSD0336
The AWD warning light is located in the
meter.
The AWD warning light comes on when the
ignition switch is pushed to the ON position.
It turns off soon after the engine is started.
If any malfunction occurs in the Intelligent
AWD system while the engine is running, thewarning light will come on.
The warning light may blink rapidly (about
twice per second) while trying to free a stuck
vehicle due to high power train oil tempera-
ture. The driving mode may change to two-
wheel drive. If the warning light blinks
rapidly during operation, stop the vehicle
with the engine idling in a safe place
immediately. Then if the light goes off after
a while, you can continue driving.
A large difference between the diameters of
front and rear wheels will make the warning
light blink slowly (about once per two
seconds). Pull off the road in a safe area,
and idle the engine. Check that all tire sizes
are the same, tire pressure is correct and
tires are not worn.
If the warning light is blinking after the
above operation, have your vehicle checked
as soon as possible. It is recommended you
visit an INFINITI retailer for this service.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.
. Do not attempt to test an AWD
equipped vehicle on a 2-wheel dy-
namometer (such as the dynam-
ometers used by some states for
emissions testing) or similar equip-
ment 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 dynam-
ometer. Using the wrong test equip-
ment may result in drivetrain damage
or unexpected 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 warning light comes on while
driving there may be a malfunction in
the AWD system. Reduce the vehicle
speed and have your vehicle checked
as soon as possible. It is recom-
mended you visit an INFINITI retailer
for this service.
INTELLIGENT ALL-WHEEL
DRIVE (AWD) (if so equipped)

.If the warning light remains on after
the above operation, have your ve-
hicle checked as soon as possible. It is
recommended you visit an INFINITI
retailer for this service.
. The power train may be damaged if
you continue driving with the warn-
ing light blinking.
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
Starting and driving5-119
PARKING/PARKING ON HILLS

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.2-16).
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 rise-up and build-up and 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.2-16) and “Vehicle Dynamic
Control (VDC) off indicator light” (P.2-19).
Starting and driving5-123
VEHICLE DYNAMIC CONTROL
(VDC) SYSTEM

To shut off the engine in an emergency
situation while driving, perform the follow-
ing procedure:
.Rapidly push the push-button ignition
switch 3 consecutive times in less than
1.5 seconds, or
. Push and hold the push-button ignition
switch for more than 2 seconds.TIRE PRESSURE MONITORING
SYSTEM (TPMS)
This vehicle is equipped with the Tire
Pressure Monitoring System (TPMS). It
monitors tire pressure of all tires except the
spare. When the low tire pressure warning
light is lit and the CHECK TIRE PRESSURE
warning appears in the vehicle information
display, one or more of your tires is sig-
nificantly under-inflated. If the vehicle is
being driven with low tire pressure, the
TPMS will activate and warn you of it by
the low tire pressure warning light. This
system will activate only when the vehicle is
driven at speeds above 16 MPH (25 km/h).
For more details, see “Warning lights, in-
dicator lights and audible reminders” (P.2-
10) and “Tire Pressure Monitoring System
(TPMS)” (P.5-5).
WARNING
. If the low tire pressure warning light
illuminates or LOW PRESSURE in-
formation is displayed on the monitor
screen while driving, avoid sudden
steering maneuvers or abrupt brak-
ing, reduce vehicle speed, pull off the
road to a safe location and stop the
vehicle as soon as possible. Driving
with under-inflated tires may perma- nently damage the tires and increase
the likelihood of tire failure. Serious
vehicle damage could occur and may
lead to an accident and could result in
serious personal injury. Check the tire
pressure for all four tires. Adjust the
tire pressure to the recommended
COLD tire pressure shown on the
Tire and Loading Information label to
turn the low tire pressure warning
light OFF. If the light still illuminates
while driving after adjusting the tire
pressure, a tire may be flat. If you
have a flat tire, replace it with a spare
tire as soon as possible.
. Since the spare tire is not equipped
with the TPMS, when a spare tire is
mounted or a wheel is replaced, the
TPMS will not function and the low
tire pressure warning light will flash
for approximately 1 minute. The light
will remain on after 1 minute. Have
your tires replaced and/or TPMS
system reset as soon as possible. It
is recommended you visit an INFINITI
retailer for these services.
. Replacing tires with those not origin-
ally specified by INFINITI could affect
the proper operation of the TPMS.
. Do not inject any tire liquid or aerosol
tire sealant into the tires, as this may
In case of emergency6-3
EMERGENCY ENGINE SHUT OFF FLAT TIRE