2023 NISSAN ALTIMA ECU

3. The booster seat should be positionedon the vehicle seat so that it is stable.
If necessary, adjust or remove the head
restraint/headrest to obtain the correct
high back booster seat fit. If the head
restraint/headrest is removed, store it in
a secure place. Be sure to reinstall the
head restraint/headrest when the
booster seat is removed. For additional
information about head restraint/
headrest adjustment, removal and in-
stallation, see "Head restraints/
headrests" (P. 1-8). If the seating position does not have an
adjustable head restraint/headrest and
it is interfering with the proper booster
seat fit, try another seating position or a
different booster seat.
4. Position the lap portion of the seat belt low and snug on the child’s hips. Be sure
to follow the booster seat manufactur-
er’s instructions for adjusting the seat
belt routing.
5. Pull the shoulder belt portion of the seat belt toward the retractor to take up ex-
tra slack. Be sure the shoulder belt is
positioned across the top, middle por-
tion of the child’s shoulder. Be sure to
follow the booster seat manufacturer’s
instructions for adjusting the seat belt
routing.
6. Follow the warnings, cautions and in- structions for properly fastening a seat
belt shown in “Three-point type seat belt
with retractor” (P. 1-15). 7. If the booster seat is installed in the front
passenger seat, place the ignition switch
in the ON position. The front passenger
air bag status light
may or may not
illuminate, depending on the size of the
child and the type of booster seat being
used. For additional information, see
“Front passenger air bag and status
light” (P. 1-57).
LRS0452
Rear outboard position
LRS3091
1-46Safety-Seats, seat belts and supplemental restraint system

Front passenger air bag
The front passenger air bag and front pas-
senger supplemental knee air bag is de-
signed to automatically turn OFF when the
vehicle is operated under some conditions
as described below in accordance with U.S.
regulations. If the front passenger air bag
and front passenger supplemental knee
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 an
inflating air bag to certain front passenger
seat occupants, such as children, by requir-
ing the air bags 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 and front pas-
senger supplemental knee air bag OFF in
accordance with the regulations. Also, if a
child restraint of the type specified in the
regulations is on the seat, its weight andthe 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 not
cause the front passenger air bag and
front passenger supplemental knee air
bag to be automatically turned OFF. For
small adults it may be turned OFF, however
if the occupant 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 bags
OFF. Always be sure to be seated and wear-
ing the seat belt properly for the most ef-
fective protection by the seat belt and
supplemental 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
air bag and front passenger supplemental
knee air bag OFF for specified child re-
straints as required by the regulations. Fail-
ing to properly secure child restraints andto use the ALR mode may allow the re-
straint to tip or move in a collision or sud-
den stop. This can also result in the passen-
ger air bag and front passenger
supplemental knee air bag inflating in a
crash instead of being OFF. For additional
information about proper use and installa-
tion, see “Child restraints” (P. 1-23).
If the front passenger seat is not occupied,
the front passenger air bag and front pas-
senger supplemental knee air bag are de-
signed not to inflate in a crash. However,
heavy objects placed on the seat could re-
sult in air bag inflation, because of the ob-
ject’s weight detected by the occupant
classification sensor. Other conditions
could also result in air bag inflation, such as
if a child is standing on the seat, or if two
children are on the seat, contrary to the
instructions in this manual. Always be sure
that you and all vehicle occupants are
seated and restrained properly.
Using the front passenger air bag status
light, you can monitor when the front pas-
senger air bag and front passenger
supplemental knee air bag are automati-
cally turned OFF.
1-58Safety-Seats, seat belts and supplemental restraint system

2 Instruments and controls
Instrument panel................................2-2
Meters and gauges .............................2-4
Speedometer and odometer .................2-4
Tachometer ..................................2-6
Engine coolant temperature gauge ..........2-6
Fuel gauge ................................... 2-7
Distance To Empty (DTE) .....................2-8
Variable Compression Turbo
(if so equipped) ...............................2-8
Warning lights, indicator lights and audible
reminders .......................................2-9
Checking lights .............................. 2-10
Warning/Indicator lights (red) ...............2-10
Warning/Indicator lights (yellow) ............2-12
Warning/Indicator lights (other) .............2-17
Audible reminders ........................... 2-18
Vehicle information display- 5 inch (13 cm)
Type A (if so equipped) ......................... 2-18
How to use the vehicle information
display ...................................... 2-19
Startup display .............................. 2-19
Resetting the drive computer ...............2-20
Oil control system (if so equipped) ...........2-20
Settings ..................................... 2-21
Vehicle information display warnings
and indicators ............................... 2-28Vehicle information display —7 inch (18 cm)
Type B (if so equipped)
......................... 2-34
How to use the vehicle information
display ...................................... 2-35
Startup display .............................. 2-35
Resetting the drive computer ...............2-35
Oil control system (if so equipped) ...........2-36
Settings ..................................... 2-37
Vehicle information display warnings
and indicators ............................... 2-45
Security systems ............................... 2-52
Vehicle security system .....................2-52
NISSAN Vehicle Immobilizer System .........2-54
Wiper and washer switch .......................2-55
Switch operation ............................ 2-55
Rear window and outside mirror
(if so equipped) defroster switch ...............2-56
Headlight and turn signal switch ...............2-57
Headlight control switch ....................2-57
LED

Daytime Running Lights (DRL)
system (if so equipped) ......................2-62
Instrument brightness control ..............2-62
Turn signal switch ........................... 2-63
Fog light switch (if so equipped) .............2-63
Horn ........................................... 2-64

Warning/Indicator light (red)Warning/Indicator light (yellow) Warning/Indicator light (other)
orBrake warning lightorAnti-lock Braking System (ABS)
warning lightAutomatic brake hold indicator light
(white/green) (if so equipped)
Charge warning lightAutomatic Emergency Braking (AEB) with
Pedestrian Detection system warning lightFront fog light indicator light (green) (if so
equipped)
orElectronic parking brake indi-
cator light (if so equipped)orElectronic parking brake
warning light (if so equipped)High Beam Assist indicator light (green)
Engine oil pressure warning lightFront passenger air bag status lightHigh beam indicator light (blue)
Master warning lightLow tire pressure warning lightSide light and headlight indicator light
(green)
Seat belt warning light and chimeMalfunction Indicator Light (MIL)Turn signal/hazard indicator lights (green)
Security indicator lightMaster warning light
Supplemental air bag warning lightPower steering warning light
Rear Automatic Braking (RAB) warning light
(if so equipped)
Slip indicator light
Vehicle Dynamic Control (VDC) OFF indica-
tor light
WARNING LIGHTS, INDICATOR LIGHTS
AND AUDIBLE REMINDERS
Instruments and controls2-9

• Parking brake release warning
• Door open warning (while moving)
• Steering Alert hands on detectionwarning
The warning(s) remain on the vehicle infor-
mation display until action is taken, or the
ignition is placed in the OFF position.
Seat belt warning light and
chime
The light and chime remind you to fasten
the driver and front passenger seat belts.
For additional information, see “Seat belts”
(P. 1-12).
Security indicator light
This light blinks when the ignition switch is
placed in the OFF, LOCK or AUTO ACC
position.
The blinking security indicator light indi-
cates that the security systems equipped
on the vehicle are operational.
For additional information, see “Security
systems” (P. 2-52).
Supplemental air bag
warning light
When the ignition switch is placed in the ON
or START position, the supplemental air
bag warning light illuminates for about 7
seconds and then turns off. This means the
system is operational.
If any of the following conditions occur, the
front air bag, side air bag, curtain air bag,
and pretensioner systems need servicing
and your vehicle must be taken to a NISSAN
dealer:
• The supplemental air bag warning light remains on af ter approximately 7
seconds.
• The supplemental air bag warning light flashes intermittently.
• The supplemental air bag warning light does not come on at all.
Unless checked and repaired, the supple-
mental restraint system (air bag system)
and/or the pretensioners may not function
properly. For additional details, see “Supple-
mental Restraint System (SRS)” (P. 1-47).
WARNING
If the supplemental air bag warning
light is on, it could mean that the front
air bag, side air bag, curtain air bag sys-
tems and/or pretensioner systems will
not operate in an accident. To help
avoid injury to yourself or others, have
your vehicle checked as soon as pos-
sible. It is recommended that you visit a
NISSAN dealer for this service.
WARNING/INDICATOR LIGHTS
(yellow)
For additional information on warnings
and indicators, see “Vehicle information
display-5 inch (13 cm) Type A” (P. 2-18) or
“Vehicle information display-7 inch (18 cm)
Type B” (P. 2-34).
orAnti-lock Braking
System (ABS)
warning light
When the ignition switch is placed in the ON
position, the ABS warning light illuminates
and then turns off. This indicates the ABS is
operational.
2-12Instruments and controls

Steering Assist indicator
This indicator appears when the Steering
Assist system is engaged.
For additional information, see “ProPILOT
Assist” (P. 5-94).
Unavailable: High Cabin Temperature
This message appears when the camera
detects an interior temperature of more
than 104°F (40°C). For additional informa-
tion, see “Automatic Emergency Braking
(AEB) with Pedestrian Detection” (P. 5-135),
“ProPILOT Assist” (P. 5-94), “Intelligent Lane
Intervention (I-LI)” (P. 5-40), “Lane Departure
Warning (LDW)” (P. 5-33) or “Traffic Sign Rec-
ognition (TSR) . (P. 5-30).
Unavailable: Side Radar Obstruction
This message appears when the Blind
Spot Warning (BSW)/Rear Cross Traffic Alert
(RCTA) systems become unavailable be-
cause a radar blockage is detected. For
additional information, see “Blind Spot
Warning (BSW)” (P. 5-46) or “Rear Cross Traf-
fic Alert (RCTA)” (P. 5-58).
Vehicle ahead detection
indicator
This indicator shows when the following
systems are engaged and have detected a
vehicle:
• Automatic Emergency Braking (AEB) withPedestrian Detection
• Intelligent Forward Collision Warning (I-FCW)
For additional information, see “Automatic
Emergency Braking (AEB) with Pedestrian
Detection” (P. 5-135) or “Intelligent Forward
Collision Warning (I-FCW)” (P. 5-147).
Your vehicle may have two types of security
systems:
• Vehicle security system
• NISSAN Vehicle Immobilizer System
VEHICLE SECURITY SYSTEM
The vehicle security system provides visual
and audible alarm signals if someone
opens the doors or trunk when the system
is armed. It is not, however, a motion detec-
tion type system that activates when a ve-
hicle is moved or when a vibration occurs.
LIC0301
SECURITY SYSTEMS
2-52Instruments and controls

The system helps deter vehicle thef t but
cannot prevent it, nor can it prevent the
thef t of interior or exterior vehicle compo-
nents in all situations. Always secure your
vehicle even if parking for a brief period.
Never leave your keys in the vehicle, and
always lock the vehicle when unattended.
Be aware of your surroundings, and park in
secure, well-lit areas whenever possible.
Many devices offering additional protec-
tion, such as component locks, identifica-
tion markers, and tracking systems, are
available at auto supply stores and spe-
cialty shops. A NISSAN dealer may also offer
such equipment. Check with your insur-
ance company to see if you may be eligible
for discounts for various thef t protection
features.
How to arm the vehicle security
system
1. Close all windows and the moonroof.The system can be armed even if the
windows and moonroof (if so
equipped) are open.
2. Remove the Intelligent Key from the vehicle. 3. Close all doors, hood and trunk. Lock all
doors. The doors can be locked with the
Intelligent Key, door handle request
switch, or power door lock switch..
4. Confirm that the
indicator light
comes on. Theindicator stays
illuminated for a period of time indicat-
ing that the system is in the pre-armed
phase.
The
indicator light will blink every
3 seconds once the security system is
armed.
If during the pre-armed phase one of
the following occurs, the system will not
arm:
• Any door is unlocked with the Intelligent Key or door request switch.
• The ignition switch is placed in the ON position.
• Even when the driver and/or passen-
gers are in the vehicle, the system will
activate when all the doors, hood and
trunk are locked with the ignition
switch placed in the LOCK position.
When placing the ignition switch in the
AUTO ACC or ON position, the system
will be released.
Vehicle security system activation
The vehicle security system will give the
following alarm:
• The headlights blink and the horn sounds intermittently.
• The alarm automatically turns off af ter a period of time. However, the alarm reacti-
vates if the vehicle is tampered with
again. The alarm can be shut off by press-
ing the
button on the Intelligent Key.
The alarm is activated by:
• opening the door or trunk without using Intelligent Key (even if the door is un-
locked by releasing the door inside lock
knob switch).
How to stop an activated alarm
The alarm stops only by unlocking a door
by pressing thebutton on the Intelli-
gent Key or pushing the request switch on
the driver's or passenger's door with the
Intelligent Key in range of the door handle.
Instruments and controls2-53

NISSAN VEHICLE IMMOBILIZER
SYSTEM
The NISSAN Vehicle Immobilizer System
will not allow the engine to start without
the use of a 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 procedures:
1. Leave the ignition switch placed in theON position 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 de- vice (which may have caused the inter-
ference) separate from the registered
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. FCC Notice:
For USA:
This device complies with part 15 of the
FCC Rules. Operation is subject to the fol-
lowing two conditions: (1) This device
may not cause harmful interference, and
(2) this device must accept any interfer-
ence received, including interference
that may cause undesired operation.
NOTE:
Changes or modifications not expressly
approved by the party responsible for
compliance could void the user's author-
ity to operate the equipment.
For Canada:
This device contains licence-exempt
transmitter(s)/receiver(s) that comply
with Innovation, Science and Economic
Development Canada’s licence-exempt
RSS(s). Operation is subject to the fol-
lowing two conditions: (1) This device
may not cause interference (2) This de-
vice must accept any interference, in-
cluding interference that may cause un-
desired operation of the device.
Security indicator light
The security indicator light blinks whenever
the ignition switch is placed in the OFF,
LOCK or AUTO ACC position.
This function indicates the NISSAN Vehicle
Immobilizer System is operational.
If the NISSAN Vehicle Immobilizer System is
malfunctioning, the light will remain on
while the ignition switch is placed in the ON
position.
LIC0474
2-54Instruments and controls