2018 NISSAN ALTIMA check engine

Af ter Step 3 is performed, when the
ignition switch is pushed without de-
pressing the brake pedal, the ignition
switch position will change to the ACC
position.
4. Push the ignition switch while depress- ing the brake pedal within 10 seconds
af ter the chime sounds. The engine will
start.
NOTE: ∙ When the ignition switch is pushed to
the ACC or ON position or the engine
is started by the above procedure, the
Intelligent Key battery discharge in-
dicator appears in the vehicle infor-
mation display even when the Intelli-
gent Key is inside the vehicle. This is
not a malfunction. To turn off the In-
telligent Key battery discharge indi-
cator, touch the ignition switch with
the Intelligent Key again.
∙ If the Intelligent Key battery dis-
charge indicator appears, replace the
battery as soon as possible. For addi-
tional information, refer to “Battery
replacement” in the “Do-it-yourself ”
section of this manual.NISSAN VEHICLE IMMOBILIZER
SYSTEM
The NISSAN Vehicle Immobilizer System
will not allow the engine to start without
the use of the registered key.
If the engine fails to start using a registered
key (for example, when interference is
caused by another registered key, an auto-
mated toll road device or automatic pay-
ment device on the key ring), restart the
engine using the following procedure:
1. Leave the ignition switch in the ON po- sition for approximately 5 seconds.
2. Place the ignition switch in the OFF or LOCK position, and wait approximately
10 seconds.
3. Repeat steps 1 and 2.
4. Restart the engine while holding the device (which may have caused the in-
terference) separate from the regis-
tered key.
If the no start condition re-occurs, NISSAN
recommends placing the registered key on
a separate key ring to avoid interference
from other devices. ∙ Make sure the area around the vehicle is
clear.
∙ Check fluid levels such as engine oil, coolant, brake fluid, and windshield-
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 headrests/head restraints.
∙ 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. For additional informa-
tion, refer to “Warning lights, indicator
lights and audible reminders” in the “In-
struments and controls” section of this
manual.
BEFORE STARTING THE ENGINE
5-12Starting and driving

REMOTE ENGINE START (if so
equipped)
Vehicles started with the Remote Engine
Start require the ignition switch to be
placed in the ON position before the shif t
lever can be moved from the P (Park) posi-
tion. To place the ignition switch in the ON
position, follow these steps:1. Make sure that the Intelligent Key is on you.
2. Apply the brake.
3. Push the ignition switch once to the ON position.
For additional information, refer to “NISSAN
Intelligent Key®” in the “Pre-driving checks
and adjustments” section of this manual.
CONTINUOUSLY VARIABLE
TRANSMISSION (CVT)
WARNING
∙ Do not depress the accelerator pedal while shif ting from P (Park) or N (Neu-
tral) to R (Reverse), D (Drive), Ds (Drive
Sport) or manual shif t mode (if so
equipped). Always depress the brake
pedal until shif ting is completed. Fail-
ure to do so could cause you to lose
control and have an accident.
∙ Cold engine idle speed is high, so use caution when shif ting into a forward
or reverse gear before the engine has
warmed up.
∙ Do not downshif t abruptly on slippery roads. This may cause a loss of
control.
∙ Never shif t to either the P (Park) or R (Reverse) position while the vehicle is
moving forward and P (Park) or D
(Drive) position while the vehicle is re-
versing. This could cause an accident
or damage the transmission.
CAUTION
∙ Except in an emergency, do not shif tto the N (Neutral) position while driv-
ing. Coasting with the transmission in
the N (Neutral) position may cause se-
rious damage to the transmission.
∙ To avoid possible damage to your ve- hicle, when stopping the vehicle on an
uphill grade, do not hold the vehicle by
depressing the accelerator pedal. The
foot brake should be used for this
purpose.
The CVT in your vehicle is electronically
controlled to produce maximum power
and smooth operation.
The CVT can operate in two different auto-
matic drive modes: ∙ D (Drive) mode - Move the shif t lever to D (Drive). The transmission is in the nor-
mal forward automatic driving mode.
The position indicator in the meter
shows a “D.”
DRIVING THE VEHICLE
5-14Starting and driving

Shif t lock release
If the battery charge is low or discharged,
the shif t lever may not be moved from the
P (Park) position even with the brake pedal
depressed and the shif t lever button
pressed.
It will be necessary to jump start or have
your battery charged. For additional infor-
mation, refer to “Jump starting” in the “In
case of emergency” section of this manual.
Contact a NISSAN dealer or a professional
towing service.To move the shif t lever, complete the fol-
lowing procedure:
1. Push the ignition switch to the LOCK position.
2. Apply the parking brake.
3. Using a protective cloth on the tip of a 3 mm screwdriver, remove the shif t
lock release cover.
∙ If available, a plastic trim tool can also be used.
4. Insert the small screwdriver in the shif t lock release slot and push down.
5. Move the shif t lever to the N (Neutral) position while holding down the shif t
lock release.
If the shif t lever cannot be moved out of P
(Park), have the transmission checked as
soon as possible. It is recommended that
you visit a NISSAN dealer for this service.
WARNING
If the shif t lever cannot be moved from
the P (Park) position while the engine is
running and the brake pedal is de-
pressed, the stop lights may not work.
Malfunctioning stop lights could cause
an accident injuring yourself and
others.
LSD2087
Starting and driving5-19

Overdrive (O/D) OFF mode switch
(if so equipped)
When the O/D OFF mode switch is pushed
with the shif t lever in the D (Drive) position,
the
light in the instrument panel illu-
minates. For additional information, refer
to “Overdrive OFF indicator light” in the “In-
struments and controls” section of this
manual.
Use the overdrive OFF mode when you
need improved engine braking. To turn off the overdrive OFF mode, push
the O/D OFF mode switch again. The
indicator light will turn off.
Each time the engine is started, or when
the shif t lever is shif ted to any position
other than D (Drive) and Ds (Drive Sport), the
overdrive OFF mode will automatically turn
off.
Accelerator downshif t
— in D (Drive) position —
For passing or hill climbing, depress the
accelerator pedal to the floor. This shif ts
the transmission down into a lower gear,
depending on the vehicle speed.
High fluid temperature protection
mode
This transmission has a high fluid tem-
perature protection mode. If the fluid tem-
perature becomes too high (for example,
when climbing steep grades in high tem-
peratures with heavy loads, such as when
towing a trailer), engine power and, under
some conditions, vehicle speed will be de-
creased automatically to reduce the
chance of transmission damage. Vehicle
speed can be controlled with the accelera-
tor pedal, but the engine and vehicle speed
may be limited.
Fail-safe
If the vehicle is driven under extreme
conditions, such as excessive wheel
spinning and subsequent hard braking,
the fail-safe system may be activated.
The Malfunction Indicator Light (MIL)
may come on to indicate the fail-safe
mode is activated. For additional infor-
mation, refer to “Malfunction Indicator
Light (MIL)” in the “Instruments and con-
trols” section of this manual. This will oc-
cur even if all electrical circuits are func-
tioning properly. In this case, place the
ignition switch in the OFF position and
wait for 10 seconds. Then push the
switch back to the ON position. The ve-
hicle should return to its normal operat-
ing condition. If it does not return to its
normal operating condition, have the
transmission checked. It is recom-
mended that you visit a NISSAN dealer
for this service.
Overdrive OFF mode
LSD2090
5-20Starting and driving

Malfunction
If the BSW system malfunctions, it will turn
off automatically. The system malfunction
warning message with the BSW/RCTA indi-
cator (orange) will appear in the vehicle in-
formation display.
NOTE:
If the BSW system stops working, the
RCTA system (if so equipped) will also
stop working.
Action to take:
Stop the vehicle in a safe location, place the
vehicle in the P (Park) position, turn the en-
gine off and restart the engine. If the mes-
sage continues to appear, have the system
checked. It is recommended that you visit a
NISSAN dealer for this service.
SYSTEM MAINTENANCE
The two radar sensors1for the BSW and
RCTA systems are located near the rear
bumper. Always keep the area near the ra-
dar sensors clean.
The radar sensors may be blocked by tem-
porary ambient conditions such as splash-
ing water, mist or fog.
The blocked condition may also be caused
by objects such as ice, frost or dirt ob-
structing the radar sensors.
Check for and remove objects obstructing
the area around the radar sensors. Do not attach stickers (including transpar-
ent material), install accessories or apply
additional paint near the radar sensors.
Do not strike or damage the area around
the radar sensors. It is recommended that
you visit a NISSAN dealer if the area around
the radar sensors is damaged due to a
collision.
Radio frequency statement
For USA
FCC ID: OAYSRR2B or OAYSRR3B
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 in- terference, and
2. This device must accept any interfer- ence received, including interference
that may cause undesired operation.
FCC Warning
Changes or modifications not expressly
approved by the party responsible for
compliance could void the user’s authority
to operate the equipment.
LSD2475
Starting and driving5-31

Malfunction
When the RCTA system malfunctions, it will
turn off automatically. The system mal-
function warning message with the
BSW/RCTA indicator (orange) will appear in
the vehicle information display.
NOTE:
If the BSW system stops working, the
RCTA system (if so equipped) will also
stop working.
Action to take
Stop the vehicle in a safe location, place the
vehicle in the P (Park) position, turn the en-
gine off and restart the engine. If the mes-
sage continues to appear, have the system
checked. It is recommended that you visit a
NISSAN dealer for this service.
SYSTEM MAINTENANCE
The two radar sensors1for the BSW and
RCTA systems are located near the rear
bumper. Always keep the area near the ra-
dar sensors clean.
The radar sensors may be blocked by tem-
porary ambient conditions such as splash-
ing water, mist or fog.
The blocked condition may also be caused
by objects such as ice, frost or dirt ob-
structing the radar sensors.
Check for and remove objects obstructing
the area around the radar sensors. Do not attach stickers (including transpar-
ent material), install accessories or apply
additional paint near the radar sensors.
Do not strike or damage the area around
the radar sensors. It is recommended that
you visit a NISSAN dealer if the area around
the radar sensors is damaged due to a
collision.
Radio frequency statement
For USA
FCC ID: OAYSRR2B or OAYSRR3B
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 in- terference, and
2. This device must accept any interfer- ence received, including interference
that may cause undesired operation.
FCC Warning
Changes or modifications not expressly
approved by the party responsible for
compliance could void the user’s authority
to operate the equipment.
LSD2475
5-40Starting and driving

Action to take
When the conditions listed above are no
longer present, turn the system off using
the ICC CRUISE
switch. Turn the ICC
system back on to use the system.
Condition B
When the radar sensor area of the front
bumper is covered with dirt or is ob-
structed, the ICC system will automatically
be canceled. If the sensor area is covered
with ice, a transparent or translucent vinyl
bag, etc., the ICC system may not detect
vehicles ahead. In these instances, the ICC
system may not cancel and may not be
able to maintain the selected following dis-
tance from the vehicle ahead. Be sure to
check and clean the sensor area.
The system warning light (orange) will illu-
minate and the “Unavailable: Front Radar
Obstruction” warning message will appear
in the vehicle information display.
When driving on roads with limited road
structures or buildings (for example, or
long bridges, deserts, snow field, driving
next to long walls), the system may illumi-
nate the system warning light (orange) and
display the “Unavailable: Front Radar Ob-
struction” message. Action to take
If the warning light (orange) comes on, park
the vehicle in a safe location and turn the
engine off. Check to see if the sensor area
of the front bumper is blocked. If the sensor
area of the front bumper is blocked, re-
move the blocking material. Restart the
engine. If the warning light continues to
illuminate, have the ICC system checked. It
is recommended that you visit a NISSAN
dealer for this service.
Condition C
When the ICC system is not operating
properly, a chime sounds and the system
warning light (orange) will come on.Action to take
If the warning light comes on, park the ve-
hicle 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 indicator stays on, it may indicate
that the system is malfunctioning. Al-
though the vehicle is still drivable under
normal conditions, have the vehicle
checked. It is recommended that you
visit a NISSAN dealer for this service.
LSD2543LSD2395
5-56Starting and driving

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
AEB system is automatically turned off.
The AEB system warning light (orange) will
illuminate.
Action to take
When the above conditions no longer exist,
the AEB system will resume automatically.
Condition B
When the sensor area of the front bumper
is covered with dirt or is obstructed, mak-
ing it impossible to detect a vehicle ahead,
the AEB system is automatically turned off.
The AEB system warning light (orange) will
illuminate and the “Unavailable: Front Ra-
dar Obstruction” warning message will ap-
pear in the vehicle information display.
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 thesystem warning light (orange) and display
the “Unavailable: Front Radar Obstruction”
message.
Action to take
If the warning light (orange) comes on, stop
the vehicle in a safe place, place the shif t
lever in the P (Park) position and turn the
engine off. Clean the radar cover on the
lower grille with a sof t cloth, and restart the
engine. If the warning light continues to
illuminate, have the AEB system checked. It
is recommended that you visit a NISSAN
dealer for this service.
NOTE:
If the AEB system stops working, the
I-FCW system (if so equipped) will also
stop working.
SYSTEM MALFUNCTION
If the AEB system malfunctions, it will be
turned off automatically, a chime will
sound, the AEB warning light (orange) will
illuminate and the warning message [Mal-
function] will appear in the vehicle informa-
tion display.
Action to take
If the warning light (orange) comes on, stop
the vehicle in a safe location, turn the en-
gine off and restart the engine. If the warn-
ing light continues to illuminate, have the
AEB system checked. It is recommended
that you visit a NISSAN dealer for this ser-
vice.
Starting and driving5-63