check engine INFINITI Q50 2014 User Guide

TROUBLESHOOTING GUIDE
SymptomPossible causeAction to take
When pushing the ignition switch
to stop the engine The SHIFT P warning appears on the display
and the inside warning chime sounds con-
tinuously.
The shift lever is not in the P (Park)
position.
Shift the shift lever to the P (Park) position.
When shifting the shift lever to
the P (Park) position. The inside warning chime sounds continu-
ously. The ignition switch is in the ACC or ON
position.
Push the ignition switch to the OFF position.
When opening the driver’s door to
get out of the vehicle The inside warning chime sounds continu-
ously. The ignition switch is in the ACC
position.
Push the ignition switch to the OFF position.
When closing the door after get-
ting out of the vehicle The NO KEY warning appears on the display,
the outside chime sounds 3 times and the
inside warning chime sounds for a few
seconds.
The ignition switch is in the ACC or ON
position.
Push the ignition switch to the OFF position.
The SHIFT P warning appears on the display
and the outside chime sounds continuously. The ignition switch is in the ACC or OFF
position and the shift lever is not in the
P (Park) position.Move the shift lever to the P (Park) position
and push the ignition switch to the OFF
position.
When closing the door with the
inside lock knob turned to LOCK The outside chime sounds for a few seconds
and all the doors unlock. The Intelligent Key is inside the vehicle
or trunk.
Carry the Intelligent Key with you.
When pushing the request switch
or LOCK button on the Intelligent
Key to lock the door The outside chime sounds for a few seconds. The Intelligent Key is inside the vehicle
or trunk.
Carry the Intelligent Key with you.
A door is not closed securely. Close the door securely.
When closing the trunk lid The outside chime sounds for approximately
10 seconds and the trunk lid opens. The Intelligent Key is inside the trunk.
Carry the Intelligent Key with you.
Pre-driving checks and adjustments3-13

3-14Pre-driving checks and adjustments
LOG-IN FUNCTION
After setting up the user information, the
system will automatically recognize the
user upon turning on the vehicle.
There will be a personalized welcome
greeting and screen prompt to log-in.
This feature allows 4 drivers to use their
own registration, drive mode, driving posi-
tion, air conditioner, and auto settings and
memorizes these custom settings.
The log-in user can be changed on the
welcome greeting screen or the User List
screen. For more details, see the Infiniti
InTouch Owner’s Manual.
The log-in function is linked to the follow-
ing items:
.Meter
. Audio
. Navigation system display (if so
equipped)
. Navigation settings (if so equipped)
. Air conditioner
. Automatic drive positioner (if so
equipped)
. Engine·Transmission .
Steering (models with Direct Adaptive
Steering)
. Active trace control system
. Driver assistance (if so equipped)WARNING
The Intelligent Key transmits radio waves
when the buttons are pushed. The FAA
advises that the radio waves may affect
aircraft navigation and communication sys-
tems. Do not operate the Intelligent Key
while on an airplane. Make sure the buttons
are not operated unintentionally when the
unit is stored during a flight.
It is possible to lock/unlock all doors and
fuel-filler door, open the trunk lid, activate
the panic alarm and open the windows by
pushing the buttons on the Intelligent Key
from outside the vehicle.
Before locking the doors, make sure the
Intelligent Key is not left in the vehicle.
The remote keyless entry function can
operate at a distance of approximately 33
ft (10 m) from the vehicle. (The effective
distance depends upon the conditions
around the vehicle.)
As many as 4 Intelligent Keys can be used
with one vehicle. For information concern-
ing the purchase and use of additional
Intelligent Keys, contact an INFINITI retai-
ler.
REMOTE KEYLESS ENTRY SYSTEM

3-18Pre-driving checks and adjustments
Switching procedure:
To switch the hazard indicator and horn
(chime) operation, push the LOCK
*1and UNLOCK*2buttons on the In-
telligent Key simultaneously for more than
2 seconds.
. When the hazard indicator mode is set,
the hazard indicator flashes 3 times.
. When the hazard indicator and horn
mode is set, the hazard indicator
flashes once and the horn chirps once.
JVP0234X
1. Pull the hood lock release handle*1located below the instrument panel;
the hood will then spring up slightly.
2. Pull the lever
*2up at the front of the
hood with your fingertips and raise the
hood.
3. When closing the hood, slowly close the hood down to latch both the right
and left locks. Push the hood down to
lock the hood securely into place.
WARNING
. Make sure the hood is completely closed
and latched before driving. Failure to do
so could cause the hood to fly open and
result in an accident.
. If you see steam or smoke coming from
the engine compartment, to avoid injury
do not open the hood.
HOOD

3-22Pre-driving checks and adjustments
.Push the power door lock switch to the
UNLOCK position.
To lock, close the fuel-filler door securely
and lock all doors by operating the door
handle request switch, the LOCK button on
the Intelligent Key, the mechanical key or
the power door lock switch.
FUEL-FILLER CAP
WARNING
. Gasoline is extremely flammable and
highly explosive under certain condi-
tions. You could be burned or seriously
injured if it is misused or mishandled.
Always stop engine and do not smoke or
allow open flames or sparks near the
vehicle when refueling.
. Do not attempt to top off the fuel tank
after the fuel pump nozzle shuts off
automatically. Continued refueling may
cause fuel overflow, resulting in fuel
spray and possibly a fire.
. Use only an original equipment type
fuel-filler cap as a replacement. It has a
built-in safety valve needed for proper
operation of the fuel system and emis-
sion control system. An incorrect cap can result in a serious malfunction and
possible injury. It could also cause the
Malfunction Indicator Light (MIL) to
come on.
. Never pour fuel into the throttle body to
attempt to start your vehicle.
. Do not fill a portable fuel container in
the vehicle or trailer. Static electricity
can cause an explosion of flammable
liquid, vapor or gas in any vehicle or
trailer. To reduce the risk of serious
injury or death when filling portable fuel
containers:
—Always place the container on the
ground when filling.
—Do not use electronic devices whenfilling.
—Keep the pump nozzle in contact
with the container while you are
filling it.
—Use only approved portable fuelcontainers for flammable liquid.
CAUTION
. If fuel is spilled on the vehicle body,
flush it away with water to avoid paint
damage.
. Insert the cap straight into the fuel-filler
tube, then tighten the fuel-filler cap until
a single click is heard. Failure to tighten
the fuel-filler cap properly may cause the
Malfunction Indicator Light (MIL) to
illuminate. If thelight illuminates
because the fuel-filler cap is loose or
missing, tighten or install the cap and
continue to drive the vehicle. The
light should turn off after a few driving
trips. If thelight does not turn off
after a few driving trips, have the vehicle
inspected by an INFINITI retailer.
. The Loose Fuel Cap warning will appear
if the fuel-filler cap is not properly
tightened. It may take a few driving
trips for the warning to be displayed.
Failure to tighten the fuel-filler cap
properly after the Loose Fuel Cap warn-
ing appears may cause the
Mal-
function Indicator Light (MIL) to
illuminate.

5-4Starting and driving
THREE-WAY CATALYST
The three-way catalyst is an emission
control device installed in the exhaust
system. Exhaust gases in the three-way
catalyst are burned at high temperatures to
help reduce pollutants.
WARNING
.The exhaust gas and the exhaust system
are very hot. Keep people, animals or
flammable materials away from the
exhaust system components.
. 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.
CAUTION
.Do not use leaded gasoline. Deposits
from leaded gasoline seriously reduce
the three-way catalyst’s ability to help
reduce exhaust pollutants.
. Keep your engine tuned up. Malfunctions
in the ignition, fuel injection, or elec-
trical systems can cause overrich fuel flow into the three-way catalyst, causing
it to overheat. Do not keep driving if the
engine misfires, or if noticeable loss of
performance or other unusual operating
conditions are detected. Have the vehicle
inspected promptly by an INFINITI retai-
ler.
. Avoid driving with an extremely low fuel
level. Running out of fuel could cause
the engine to misfire, damaging the
three-way catalyst.
. Do not race the engine while warming it
up.
. Do not push or tow your vehicle to start
the engine.
TIRE PRESSURE MONITORING SYS-
TEM (TPMS)
Each tire, including the spare (if provided),
should be checked monthly when cold and
inflated to the inflation pressure recom-
mended by the vehicle manufacturer on the
vehicle placard or tire inflation pressure
label. (If your vehicle has tires of a different
size than the size indicated on the vehicle
placard or tire inflation pressure label, you
should determine the proper tire inflation
pressure for those tires.) As an added safety feature, your vehicle
has been equipped with a Tire Pressure
Monitoring System (TPMS) that illuminates
a low tire pressure telltale when one or
more of your tires is significantly under-
inflated. Accordingly, when the low tire
pressure telltale illuminates, you should
stop and check your tires as soon as
possible, and inflate them to the proper
pressure. Driving on a significantly under-
inflated tire causes the tire to overheat and
can lead to tire failure. Under-inflation also
reduces fuel efficiency and tire tread life,
and may affect the vehicle’s handling and
stopping ability.
If the vehicle is being driven with one or
more flat tires, the low tire pressure
warning light will illuminate continuously
and a chime will sound for 10 seconds. The
flat tire warning will also appear in the
vehicle information display. The chime will
only sound at the first indication of a flat
tire, and the warning light will illuminate
continuously. When the flat tire warning is
activated, have the system reset and the
tire checked and replaced if necessary by
an INFINITI retailer. Even if the tire is
inflated to the specified COLD tire pres-
sure, the warning light will continue to

JVS0264X
INTELLIGENT KEY BATTERY DIS-
CHARGE
If the battery of the Intelligent Key is
discharged, or environmental conditions
interfere with the Intelligent Key operation,
start the engine according to the following
procedure:
1. Move the shift lever to the P (Park)position.
2. Firmly apply the foot brake.
3. Touch the ignition switch with the Intelligent Key as illustrated. (A chime
will sound.) 4. Push the ignition switch while depres-
sing the brake pedal within 10 seconds
after the chime sounds. The engine will
start.
After step 3 is performed, when the
ignition switch is pushed without depres-
sing the brake pedal, the ignition switch
position will change to ACC.
NOTE:
. When the ignition switch is pushed to
the ACC or ON position or the engine is
started by the above procedures, the
Intelligent Key battery discharge indi-
cator appears in the vehicle informa-
tion display even if the Intelligent Key
is inside the vehicle. This is not a
malfunction. To turn off the Intelligent
Key battery discharge indicator, touch
the ignition switch with the Intelligent
Key again.
. If the Intelligent Key battery discharge
indicator appears, replace the battery
as soon as possible. (See “Intelligent
Key battery replacement” (P.8-24).).
Make sure the area around the vehicle
is clear.
. Check fluid levels such as engine oil,
coolant, brake fluid and window
washer fluid as frequently as possible,
or at least whenever you refuel.
. Check that all windows and lights are
clean.
. Visually inspect tires for their appear-
ance and condition. Also check tires for
proper inflation.
. Lock all doors.
. Position seat and adjust head re-
straints.
. Adjust inside and outside mirrors.
. Fasten seat belts and ask all passen-
gers to do likewise.
. Check the operation of warning lights
when the ignition switch is pushed to
the ON position. (See “Warning/indica-
tor lights and audible reminders” (P.2-
12).)
Starting and driving5-13
BEFORE STARTING THE ENGINE

4. Push down the shift lock*Busing
mechanical key as illustrated.
5. Push the shift lever button
*Cand
move the shift lever to N (Neutral)
position
*Dwhile holding down the
shift lock.
If the lever cannot be moved out of P
(Park), have an INFINITI retailer check the
automatic transmission system as soon as
possible.
Adaptive Shift Control (ASC)
The adaptive shift control system automa-
tically operates when the transmission is
in the D (Drive) position and selects an
appropriate gear depending on the road
conditions such as uphill, downhill or
curving roads.
Control on uphill and curving roads:
A low gear is maintained that suits the
degree of the slope or curve to allow
smooth driving with a small number of
shifts.
Control on downhill roads:
The adaptive shift control system shifts to
a low gear that suits the degree of the
slope, and uses the engine braking to
reduce the number of times that the brake must be used.
Control on winding roads:
A low gear is maintained on continuous
curves that involve repeated acceleration
and deceleration, so that smooth accelera-
tion is available instantly when the accel-
erator pedal is depressed.
NOTE:
. Adaptive shift control may not operate
when the transmission oil temperature
is low immediately after the start of
driving or when it is very hot.
. During some driving situations, hard
braking for example, the adaptive shift
control may automatically operate. The
transmission may automatically shift
to a lower gear for engine braking. This
increases engine speed but not vehicle
speed. Vehicle speed is controlled by
the accelerator pedal when the vehicle
is in the Adaptive shift control mode.
. When the adaptive shift control oper-
ates, the transmission sometimes
maintains a lower gear for a longer
period of time than when adaptive shift
control is not operating. Engine speed
will be higher for a specific vehicle
speed while ASC system is operating than when ASC is not operating.
NAVI Shift Control (if so equipped)
NAVI Shift Control automatically adjusts
the Automatic Transmission (AT) gear posi-
tion in certain situations based on road
information from the navigation system.
When the navigation system detects that
the vehicle is approaching a curved road,
NAVI Shift Control will adjust the gear
position if needed to help the driver run
through the curve smoothly.
Precaution on NAVI shift control:
.
The NAVI Shift Control does not provide
steering input or automated driving on
a curve. It is not a speed limit support
system and will not modify your speed
according to local speed limits.
. The NAVI Shift Control is a convenient
system intended to help the vehicle
move through a curve smoothly. How-
ever, the driver must always drive
safely and use the brake pedal if
needed.
. The NAVI Shift Control may be delayed
or not operate properly in the following
situations, because this function uses
the road information provided by the
navigation system.
Starting and driving5-19

5-26Starting and driving
PRECAUTIONS ON ACTIVE LANE
CONTROL
WARNING
.Active Lane Control will not always steer
the vehicle to keep it in the lane. It is not
designed to 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.
. Active Lane Control is primarily intended
for use on well-developed freeways or
highways. It may not detect the lane
markers for certain roads, weather or
driving conditions.
. Using Active Lane Control under some
conditions of road, lane marker or
weather, or if you attempt to 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 direc-
tion with your steering operation to
avoid accidents.
. When Active Lane Control is operating,
avoid excessive or sudden steering maneuvers. Otherwise, you could lose
control of the vehicle.
. Active Lane Control will not operate at
speeds below approximately 45 MPH (70
km/h) or if it cannot detect lane markers.
. Active Lane Control may not operate
properly under the following conditions,
and do not use Active Lane Control:
—During bad weather (rain, fog, snow,
wind, etc.).
—When driving on slippery roads,such as on ice or snow, etc.
—When driving on winding or uneven roads.
—When there is a lane closure due toroad repairs.
—When driving in a makeshift lane.
—When driving on roads where the
lane width is too narrow.
—When driving with a tire that is notwithin normal tire conditions (for
example, tire wear, low tire pressure,
installation of spare tire, tire chains,
non-standard wheels).
—When the vehicle is equipped withnon-original steering parts or sus- pension parts.
. If Active Lane Control malfunctions, it
will cancel automatically. The chassis
control warning will appear in the
vehicle information display.
. If the chassis control warning appears,
pull off the road to a safe location and
stop the vehicle. Turn the engine off and
restart the engine. If the chassis control
warning continues to illuminate, have
Active Lane Control checked by an
INFINITI retailer.
The functions of Active Lane Control may or
may not operate properly under the follow-
ing conditions:
.On roads where there are multiple
parallel lane markers; lane markers
that are faded or not painted clearly;
yellow painted lane markers; non-stan-
dard lane markers; lane markers cov-
ered 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

The LDW and LDP systems monitor the lane
markers on the traveling lane using the
camera unit
*1located above the inside
mirror. When the camera unit detects that
the vehicle is traveling close to either the
left or the right of the traveling lane, the
driver assist system lane indicator (orange)
in the vehicle information display blinks
and a warning chime sounds. When the
LDP system is on, it will automatically
apply a steering operation for a short
period of time.
LANE DEPARTURE WARNING (LDW)
SYSTEM
Precautions on LDW system
WARNING
. This system is only a warning device to
inform the driver of a potential unin-
tended lane departure. It 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
the vehicle at all times.
. The system will not operate at speeds below approximately 45 MPH (70 km/h)
or if it cannot detect lane markers.
. If the LDW system malfunctions, it will
cancel automatically, and the LDW mal-
function message will appear in the
vehicle information display.
. If the LDW malfunction message ap-
pears, pull off the road to a safe location
and stop the vehicle. Turn the engine off
and restart the engine. If the LDW
malfunction message continues to ap-
pear, have the system checked by an
INFINITI retailer.
. Excessive noise will interfere with the
warning chime sound, and the chime
may not be heard.
The system may not function 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-stan-
dard lane markers; or lane markers
covered with water, dirt, snow, etc.
. On roads where the 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 Lane
Departure Warning (LDW) 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.)
Starting and driving5-31

LANE DEPARTURE PREVENTION
(LDP) SYSTEM
Precautions on LDP system
WARNING
.The LDP system will not always steer the
vehicle to keep it in the lane. It is not
designed to 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 high-
ways. 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 acci-
dents. .
When the LDP system is operating, avoid
excessive or sudden steering maneu-
vers. 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 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 thelane width is too narrow.
—When driving with a tire that is notwithin 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 steering parts or sus-
pension parts.
. If the LDP system malfunctions, it will
cancel automatically. The LDP “malfunc-
tion” message will appear in the vehicle
information display.
. If the “malfunction” message appears,
pull off the road to a safe location and
stop the vehicle. Turn the engine off and
restart the engine. If the “malfunction”
message continues to appear, 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 steering control assist) may or may not
operate properly under the following con-
ditions:
.On roads where there are multiple
parallel lane markers; lane markers
that are faded or not painted clearly;
yellow painted lane markers; non-stan-
dard lane markers; lane markers cov-
Starting and driving5-33