2014 INFINITI Q50 check 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

5-48Starting and driving
radar obstruction”warning message ap-
pears even after the BSI system is turned
on again, stop the vehicle in a safe location
and turn the engine off. Check for and
remove objects obscuring the radar sen-
sors on the rear bumper, and restart the
engine.
Condition C:
If the vehicle is parked in direct sunlight
under high temperature conditions (over
approximately 1048F (408C)) and then the
BSI system is turned on, the BSI system
may be deactivated automatically. The
“high cabin temperature” warning mes-
sage will appear in the vehicle information
display.
Action to take:
When the above conditions no longer exist,
push the dynamic driver assistance switch
again to turn the BSI system back on.
BSW/BSI malfunction
When the BSW/BSI systems malfunction,
they will be turned off automatically, a
beep will sound, the and the system
“malfunction” warning message with the
driver assist system blind spot indicator
(orange) will appear in the vehicle informa-
tion display. Action to take:
Stop the vehicle in a safe location, turn the
engine off and restart the engine.
If the system malfunction warning message
with the driver assist system blind spot
indicator (orange) continues to be dis-
played, have the BSW/BSI systems
checked by an INFINITI retailer.
BACK-UP COLLISION INTERVENTION
(BCI) SYSTEM
The Back-up Collision Intervention (BCI)
system can help alert the driver of
approaching vehicles or rear objects when
the driver is backing out of a parking
space.
When the shift lever is in the R (Reverse)
position and the vehicle speed is less than
approximately 5 MPH (8 km/h), the BCI
system operates.JVS0233X
JVS0173X

5-54Starting and driving
.The brake engagement by the BCI
system is not as effective on a slope as
it is on flat ground. When on a steep
slope the system may not function
properly.
. Do not use the BCI systems under the
following conditions because the system
may not function properly.
—When driving with a tire that is not
within 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 suspen-
sion parts.
. Excessive noise (for example, audio
system volume, open vehicle window)
will interfere with the chime sound, and
it may not be heard.
BCI temporarily not available
When the following message appears in
the vehicle information display, a chime
will sound and the BCI system will be
turned off automatically. .
“Unavailable High Accelerator Temp.”:
When the accelerator pedal actuator
detects that the internal motor tem-
perature is high.
Action to take:
Turn on the BCI system again when the
above condition no longer exists.
. “Unavailable Side Radar Obstruction”:
When side radar blockage is detected.
Action to take:
If the warning message appears, park
the vehicle in a safe place, turn the
engine off. Check for and remove
objects obscuring the radar sensors
on the rear bumper, and restart the
engine. If the BSW or BSI system
operates normally, the BCI system will
also operate normally. (See “BSW/BSI
temporarily not available” (P.5-47).)
BCI malfunction
When the BCI system malfunctions, it will
be turned off automatically, a beep will
sound and BCI system “malfunction”
warning message will appear in the vehicle
information display.
Stop the vehicle in a safe location, turn the
engine off and restart the engine. If the
warning message continues to appear, have the system checked by an INFINITI
retailer.

5-56Starting and driving
PRECAUTIONS ON CRUISE CONTROL
.If the cruise control system malfunc-
tions, it will cancel automatically. The
cruise indicator (green) in the vehicle
information display will then blink to
warn the driver.
. If the engine coolant temperature be-
comes excessively high, the cruise
control system will be canceled auto-
matically.
. If the cruise indicator (green) blinks,
turn the cruise control MAIN switch off
and have the system checked by your
INFINITI retailer.
. The cruise indicator (green) may some-
times blink when the cruise control
MAIN switch is turned ON while push-
ing the SET/COAST (-), RESUME/ACCEL-
ERATE (+) or CANCEL switch. To properly
set the cruise control system, perform
the steps below in the order indicated.
WARNING
Do not use the cruise control when driving
under the following conditions:
. when it is not possible to keep the
vehicle at a set speed .
in heavy traffic or in traffic that varies in
speed
. on winding or hilly roads
. on slippery roads (rain, snow, ice, etc.)
. in very windy areas
Doing so could cause a loss of vehicle
control and result in an accident.
JVS0190X
1. RESUME/ACCELERATE (+) switch
2. SET/COAST (-) switch
3. CANCEL switch
4. MAIN (ON·OFF) switch
CRUISE CONTROL (if so equipped)

obstruction”warning message will appear
in the vehicle information display.
Action to take:
If the warning message appears, 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
“front radar obstruction” warning message
continues to be displayed, have the ICC
system checked by an INFINITI retailer.
JVS0221X
Condition C:
When the ICC system is not operating
properly, the chime sounds and the ICC
system warning (orange) will appear.
Action to take:
If the warning appears, park the vehicle in
a safe place. Turn the engine off, restart the
engine, resume driving and set the ICC
system again.
If it is not possible to set the system or the
warning stays on, it may indicate that the
ICC system is malfunctioning. Although
the vehicle is still driveable under normal
conditions, have the vehicle checked at an INFINITI retailer.
Starting and driving5-73