2018 NISSAN ALTIMA Troubleshooting

Front passenger air bag and status light
WARNING
The front passenger air bag is designed
to automatically turn OFF under some
conditions. Read this section carefully
to learn how it operates. Proper use of
the seat, seat belt and child restraints is
necessary for most effective protec-
tion. Failure to follow all instructions in
this manual concerning the use of
seats, seat belts and child restraints can
increase the risk or severity of injury in
an accident.Status light
The front passenger seat is equipped with
an occupant classification sensor (weight
sensor) that turns the front passenger air
bag on or off depending on the weight ap-
plied to the front passenger seat. The sta-
tus of the front passenger air bag (ON or
OFF) is indicated by the front passenger air
bag status light
which is located on
the instrument panel.
Af ter the ignition switch is placed in the
"ON" position, the front passenger air bag
status light on the instrument panel illumi-
nates for about 7 seconds and then turns
off or remains illuminated depending on
the front passenger seat occupied status.
The light operates as follows:
CONDITION DESCRIPTIONPASSENGER AIR BAG STA-
TUS LIGHT ()FRONT PASSENGER AIR BAG STATUS
Empty Empty front passenger seat ON (illuminated) INHIBITED
Nobody/SomebodyBag or Child or Child Restraint or
Small Adult in front passenger seatON (illuminated) INHIBITED
Adult Adult in the front passenger seat OFF (dark) ACTIVATED
In addition to the above, certain objects
placed on the front passenger seat may
also cause the light to operate as de-
scribed above depending on their weight.For additional information related to the
normal operation and troubleshooting of
this occupant classification sensor system,
please refer to “Normal operation” and
“Troubleshooting” in this section.Front passenger air bag
The front passenger air bag is designed to
automatically turn OFF when the vehicle is
operated under some conditions as de-
scribed below in accordance with U.S. regu-
WRS0475

NOTE:
This vehicle’s occupant classification
sensor system generally keeps the clas-
sification locked during driving, so it is
important that you confirm that the
front passenger is properly classified
prior to driving. However, the occupant
classification sensor may recalculate the
weight of the occupant under some con-
ditions (both while driving and when
stopped), so front passenger seat occu-
pants should continue to remain seated
as outlined above.
Troubleshooting
If you think the front passenger air bag
status light is incorrect:
1. If the light is ON with an adult occupying
the front passenger seat:
∙ Occupant is a small adult — the air bag
light is functioning as intended. The
front passenger air bag is suppressed.However, if the occupant is not a small
adult, then this may be due to the following
conditions that may be interfering with the
weight sensors:
∙ Occupant is not sitting upright, leaning
against the seatback, and centered on
the seat cushion with his/her feet com-
fortably extended to the floor.
∙ A child restraint or other object pressing
against the rear of the seatback.
∙ A rear passenger pushing or pulling on
the back of the front passenger seat.
∙ Forcing the front seat or seatback
against an object on the seat or floor
behind it.
∙ An object placed under the front pas-
senger seat.
∙ An object placed between the seat
cushion and center console or between
the seat cushion and the door.
If the vehicle is moving, please come to a
stop when it is safe to do so. Check and
correct any of the above conditions. Re-
start the vehicle and wait 1 minute.NOTE:
A system check will be performed during
which the front passenger air bag status
light will remain lit for about 7 seconds
initially.
If the light is still ON af ter this, the person
should be advised not to ride in the front
passenger seat and the vehicle should be
checked as soon as possible. It is recom-
mended that you visit a NISSAN dealer for
this service.
2. If the light is OFF with a small adult,
child or child restraint occupying the
front passenger seat.
This may be due to the following con-
ditions that may be interfering with the
weight sensors:
∙ Small adult or child is not sitting upright,
leaning against the seatback, and cen-
tered on the seat cushion with his/her
feet comfortably extended to the floor.
∙ The child restraint is not properly in-
stalled, as outlined in the “Child re-
straints” section of this manual.
∙ An object weighing over 9.1 lbs. (4 kg)
hanging on the seat or placed in the
seatback pocket.

Af ter the ignition switch is placed in the
"ON" position, the front passenger air bag
status light on the instrument panel illumi-nates for about 7 seconds and then turns
off or remains illuminated depending on
the front passenger seat occupied status.
The light operates as follows:
CONDITION
DESCRIPTIONPASSENGER AIR BAG INDI-
CATOR LIGHT () FRONT PASSENGER AIR BAG STATUS
Empty Empty front passenger seat ON (illuminated) INHIBITED
Nobody/Somebody Bag or Child or Child Restraint or
Small Adult in front passenger seat ON (illuminated)
INHIBITED
Adult Adult in the front passenger seat OFF (dark) ACTIVATED
In addition to the above, certain objects
placed on the front passenger seat may
also cause the light to operate as de-
scribed above depending on their weight.
For additional information, refer to “Normal
operation” and “Troubleshooting” in this
section.
Front passenger air bag
The front passenger air bag is designed to
automatically turn OFF when the vehicle is
operated under some conditions as de-
scribed below in accordance with U.S. regu-
lations. If the front passenger air bag is OFF,
it will not inflate in a crash. The driver air bag
and other air bags in your vehicle are not
part of this system.
The purpose of the regulation is to help
reduce the risk of injury or death from aninflating air bag to certain front passenger
seat occupants, such as children, by requir-
ing the air bag to be automatically turned
OFF. Certain sensors are used to meet the
requirements.
The occupant classification sensor in this
vehicle is a weight sensor. It is designed to
detect an occupant and objects on the
seat by weight. For example, if a child is in
the front passenger seat, the NISSAN Ad-
vanced Air Bag System is designed to turn
the front passenger air bag OFF in accor-
dance with the regulations. Also, if a child
restraint of the type specified in the regula-
tions is on the seat, its weight and the
child’s weight can be detected and cause
the air bag to turn OFF.
Front passenger seat adult occupants who
are properly seated and using the seat belt
as outlined in this manual should notcause the front passenger air bag to be
automatically turned OFF. For small adults
it may be turned OFF, however if the occu-
pant takes his/her weight off the seat
cushion (for example, by not sitting upright,
by sitting on an edge of the seat, or by
otherwise being out of position), this could
cause the sensor to turn the air bag OFF.
Always be sure to be seated and wearing
the seat belt properly for the most effective
protection by the seat belt and supple-
mental air bag.
NISSAN recommends that pre-teens and
children be properly restrained in a rear
seat. NISSAN also recommends that ap-
propriate child restraints and booster
seats be properly installed in a rear seat. If
this is not possible, the occupant classifica-
tion sensor is designed to operate as de-
scribed above to turn the front passenger
1-54Safety—Seats, seat belts and supplemental restraint system

∙ Make sure that a rear passenger is notpushing or pulling on the back of the
front passenger seat.
∙ Make sure that the front passenger seat or seatback is not forced back
against an object on the seat or floor
behind it.
∙ Make sure that there is no object placed under the front passenger seat.
Steps 1. Adjust the seat as outlined in the “Seats” section of this manual. Sit upright, lean-
ing against the seatback, and centered
on the seat cushion with your feet com-
fortably extended to the floor.
2. Make sure there are no objects on your lap.
3. Fasten the seat belt as outlined in the “Seat belts” section of this manual.
Front passenger seat belt buckle sta-
tus is monitored by the occupant clas-
sification system, and is used as an in-
put to determine occupancy status. So,
it is highly recommended that the front
passenger fasten their seat belt. 4. Remain in this position for 30 seconds
allowing the system to classif y the
front passenger before the vehicle is
put into motion.
5. Ensure proper classification by check- ing the front passenger air bag status
light.
NOTE:
This vehicle’s occupant classification
sensor system generally keeps the clas-
sification locked during driving, so it is
important that you confirm that the
front passenger is properly classified
prior to driving. However, the occupant
classification sensor may recalculate the
weight of the occupant under some con-
ditions (both while driving and when
stopped), so front passenger seat occu-
pants should continue to remain seated
as outlined above.
Troubleshooting
If you think the front passenger air bag
status light is incorrect: 1. If the light is ON with an adult occupying the front passenger seat: ∙ Occupant is a small adult — the air bag
light is functioning as intended. The
front passenger air bag is suppressed.
However, if the occupant is not a small
adult, then this may be due to the following
conditions that may be interfering with the
weight sensors: ∙ Occupant is not sitting upright, leaning against the seatback, and centered on
the seat cushion with his/her feet com-
fortably extended to the floor.
∙ A child restraint or other object pressing against the rear of the seatback.
∙ A rear passenger pushing or pulling on the back of the front passenger seat.
∙ Forcing the front seat or seatback against an object on the seat or floor
behind it.
∙ An object placed under the front pas- senger seat.
∙ An object placed between the seat cushion and center console or between
the seat cushion and the door.
If the vehicle is moving, please come to a
stop when it is safe to do so. Check and
correct any of the above conditions. Re-
start the vehicle and wait 1 minute.
1-56Safety—Seats, seat belts and supplemental restraint system

3 Pre-driving checks and adjustments
Keys.............................................3-2NISSAN Intelligent Key® .......................3-2
NISSAN Vehicle Immobilizer System
keys..........................................3-4
Doors ...........................................3-4
Locking with key ..............................3-5
Locking with inside lock knob .................3-5
Locking with power door lock switch .........3-6
Automatic door locks.........................3-6
Child safety rear door lock ....................3-6
NISSAN Intelligent Key® .......................... 3-7
Operating range ..............................3-8
Door locks/unlocks precaution ...............3-9
NISSAN Intelligent Key® operation ............3-10
How to use the remote keyless entry
function ..................................... 3-13
Warning lights and audible reminders .......3-17
Warning signals ............................. 3-17
Troubleshooting guide ......................3-18
Remote Engine Start (if so equipped) ...........3-20
Remote Engine Start operating range .......3-20
Remote starting the vehicle .................3-21Extending engine run time
..................3-21
Canceling a Remote Engine Start ............3-21
Conditions the Remote Engine Start will
notwork .................................... 3-22
Hood ........................................... 3-23
Trunk lid ........................................ 3-24
Opener operation ........................... 3-24
Interior trunk lid release .....................3-25
Interior trunk access ........................ 3-25
Fuel-filler door .................................. 3-26
Opener operation ........................... 3-26
Fuel-filler cap ................................ 3-26
Steering wheel ................................. 3-28
Tilt operation ................................ 3-29
Telescopic operation ........................ 3-29
Sun visors ...................................... 3-29
Vanity mirrors ............................... 3-30
Mirrors ......................................... 3-30
Manual anti-glare rearview mirror
(if so equipped) .............................. 3-30
Automatic

anti-glare rearview mirror
(if so equipped) .............................. 3-30
Outside mirrors ............................. 3-32

NOTE:
If you change the answer back horn and
light flash feature with the Intelligent
Key, the vehicle information display
screen will show the current mode af ter
the ignition switch has been cycled from
the OFF to the ON position. The vehicle
information display screen can also be
used to change the answer back horn
mode.
To deactivate:Press and hold the
andbuttonsfor at least 2 seconds.
The hazard indicator lights will flash three
times to confirm that the answer back
horn feature has been deactivated.
To activate: Press and hold the
andbuttonsfor at least 2 seconds
once more.
The hazard indicator lights will flash once
and the horn will sound once to confirm
that the horn beep feature has been reac-
tivated.
Deactivating the horn beep feature does
not silence the horn if the alarm is trig-
gered.
1P (Park) position selecting warning
2NISSAN Intelligent Key® warning
WARNING LIGHTS AND AUDIBLE
REMINDERS
The Intelligent Key is equipped with a func-
tion that is designed to minimize improper
operations and to help prevent the vehicle
from being stolen. The warning buzzer
sounds and the warning appears when im-
proper operations are detected.
CAUTION
When the buzzer sounds and the warn-
ing appears, be sure to check both the
vehicle and the Intelligent Key.
WARNING SIGNALS
To help prevent the vehicle from moving
unexpectedly by erroneous operation of
the Intelligent Key or to help prevent the
vehicle from being stolen, a chime or
buzzer sounds from inside and outside the
vehicle and a warning is displayed in the
instrument panel.
When a chime or beep sounds or a warning
is displayed, be sure to check the vehicle
and the Intelligent Key.
For additional information, refer to
“Troubleshooting guide” in this section and
“Vehicle information display” in the “Instru-
ments and controls” section of this manual.
LPD2628
Pre-driving checks and adjustments3-17

TROUBLESHOOTING GUIDE
Verif y the location of all Intelligent Keys that
are programmed for the vehicle. If another
Intelligent Key is in range or inside the ve-
hicle, the vehicle system may respond dif-
ferently than expected.
SymptomPossible CauseRemedy
When stopping the engine The Shif t to Park warning appears in
the display and the inside warning
chime sounds continuously. The shif t lever is not in the P (Park)
position.Move the shif t lever to the P (Park)
position.
When opening the driver’s door to get
out of the vehicle The Door Open warning appears in
the display and the inside warning
chime sounds continuously. The ignition switch is in the ACC
position.
Place the ignition switch in the OFF
position.
When closing the door af ter getting
out of the vehicle The No Key Detected warning appears
in the display, the outside chime
sounds three times and the inside
warning chime sounds for approxi-
mately 3 seconds.
The ignition switch is in the ACC or ON
position.
Place the ignition switch in the OFF
position.
The Shif t to Park warning appears in
the display and the outside chime
sounds continuously. The ignition switch is in the ACC posi-
tion and the shif t lever is not in the P
(Park) position.Move the shif t lever to the P (Park) po-
sition and place the ignition switch in
the OFF position.
When closing the door with the inside
lock knob turned to LOCK The outside chime sounds for approxi-
mately 3 seconds and all the doors
unlock.
The Intelligent Key is inside the vehicle. Carry the Intelligent Key with you.
When pushing the door handle re-
quest switch or the
button
on the Intelligent Key to lock the door The outside chime sounds for approxi-
mately 2 seconds.
The Intelligent Key is inside the vehicle. Carry the Intelligent Key with you.
3-18Pre-driving checks and adjustments

Siri® Activation............................... 4-51
Operating Siri® Eyes Free ....................4-51
Changing Siri® Eyes Free Settings ............4-52
Troubleshooting guide ......................4-52
Car phone or CB radio .......................... 4-54
Bluetooth® Hands-Free Phone System
without Navigation System (if so equipped) .....4-54
Regulatory information ......................4-56
Using the system ............................ 4-57
Control buttons ............................. 4-58Connecting procedure
......................4-59
Voice commands ........................... 4-60
Making a call ................................ 4-61
Receiving a call .............................. 4-62
During a call ................................. 4-62
Ending a call ................................. 4-62
Text messaging (if so equipped) .............4-63
Bluetooth® settings ......................... 4-65
Manual control .............................. 4-66