light NISSAN ALTIMA 2021 User Guide

Vehicle damage (or lack of it) is not always
an indication of proper knee air bag opera-
tion.
When the knee air bag inflates, a fairly loud
noise may be heard, followed by release of
smoke. This smoke is not harmful and
does not indicate a fire. Care should be
taken not to inhale it, as it may cause irrita-
tion and choking. Those with a history of a
breathing condition should get fresh air
promptly.The knee air bag helps to cushion the im-
pact force on the knees of the driver and
passenger. It can help reduce serious inju-
ries. However, an inflating knee air bag may
cause abrasions or other injuries. The knee
air bag provides restraint to the lower body.
The knee air bag inflates quickly in order to
help protect the occupants. Because of
this, the force of the knee air bag inflating
can increase the risk of injury if the occu-
pant is too close to, or is against, this air bag
module during inflation. The knee air bag
will deflate quickly af ter the collision is over
OR the knee air bag will remain inflated for
a short time.
The knee air bag operates only when the
ignition switch is placed in the ON posi-
tion.
Af ter placing the ignition switch in the
ON position, the supplemental air bag
warning light illuminates. The supple-
mental air bag warning light will turn off
af ter about 7 seconds if the system is
operational.

When pretensioner(s) activate, smoke is re-
leased and a loud noise may be heard. This
smoke is not harmful and does not indi-
cate a fire. Care should be taken not to
inhale it, as it may cause irritation and
choking. Those with a history of a breath-
ing condition should get fresh air promptly.
Af ter the pretensioner(s’) activation, load
limiters allow the seat belt to release web-
bing (if necessary) to reduce forces against
the chest.
The supplemental air bag warning
light

If any of the following conditions occur, the
front air bag, side air bag, curtain air bag,
knee air bag and pretensioner systems
need servicing:∙ The supplemental air bag warning light remains on af ter approximately 7 sec-
onds.
∙ The supplemental air bag warning light flashes intermittently.
∙ The supplemental air bag warning light does not come on at all.
Under these conditions, the front air bag,
side air bag, curtain air bag, knee air bag or
pretensioner systems may not operate
properly. They must be checked and re-
paired. It is recommended that you visit a
NISSAN dealer for this service.

FUEL GAUGE
The gauge indicates theapproximatefuel
level in the tank.
The gauge may move slightly during brak-
ing, turning, acceleration, or going up or
down hills.
The gauge needle returns to 0 (Empty) af-
ter the ignition switch is placed in the OFF
position.
The low fuel warning message shows in
the vehicle information display when the
amount of fuel in the tank is getting low. Refill the fuel tank before the gauge reg-
isters 0 (Empty).
The

Automatic EmergencyBraking (AEB) with
Pedestrian Detection
system warning light (if so
equipped)
This light comes on when the ignition
switch is placed in the ON position. It turns
off af ter the engine is started.
This light illuminates when the AEB with
Pedestrian Detection system is set to OFF
in the vehicle information display.
If the light illuminates when the AEB with
Pedestrian Detection system is on, it may
indicate that the system is unavailable. For
additional information, refer to “Automatic
Emergency Braking (AEB) with Pedestrian
Detection” and “Intelligent Forward Colli-
sion Warning (I-FCW)” in the “Starting and
driving” section of this manual.

the vehicle must be driven at speeds
above 16 mph (25 km/h) to activate the
TPMS and turn off the low tire pressure
warning light. Use a tire pressure gauge
to check the tire pressure.
The “Tire Pressure Low - Add Air” warning
appears each time the ignition switch is
placed in the ON position as long as the low
tire pressure warning light remains illumi-
nated.
For additional information, refer to “Vehicle
information display” in this section, “Tire
Pressure Monitoring System (TPMS)” in the
“Starting and driving” and “In case of emer-
gency” sections of this manual.
TPMS malfunction
If the TPMS is not functioning properly, the
low tire pressure warning light will flash for
approximately 1 minute when the ignition
switch is placed in the ON position. The
light will remain on af ter 1 minute. Have the
system checked. It is recommended that
you visit a NISSAN dealer for this service.
The "Tire Pressure Low — Add Air" warning
does not appear if the low tire pressure
warning light illuminates to indicate a
TPMS malfunction.For additional information, refer to “Tire
Pressure Monitoring System (TPMS)” in the
“Starting and driving” section and “Tire
pressure” in the “Do-it-yourself ” section of
this manual.

∙ When replacing a wheel without theTPMS such as the spare tire, the TPMS
will not function and the low tire pres-
sure warning light will flash for ap-
proximately 1 minute. The light will re-
main on af ter 1 minute. Have your
tires replaced and/or TPMS system
reset as soon as possible. It is recom-
mended that you visit a NISSAN dealer
for these services.
∙ Replacing tires with those not origi- nally specified by NISSAN could affect
the proper operation of the TPMS.

Malfunction Indicator Light(MIL)
If this indicator light comes on steady or
blinks while the engine is running, it may
indicate a potential emission control mal-
function.
The MIL may also come on steady if the
fuel-filler cap is loose or missing, or if the
vehicle runs out of fuel. Check to make sure
the fuel-filler cap is installed and closed
tightly, and that the vehicle has at least
3 gallons (11.4 liters) of fuel in the fuel tank.
Af ter a few driving trips, the

Side light and headlightindicator light (green)
The side light and headlight indicator light
illuminates when the side light or headlight
position is selected. For additional informa-
tion, refer to “Headlight and turn signal
switch” in this section.

If the light still remains on and/or the
engine will not start, seek service for the
NISSAN Vehicle Immobilizer System as
soon as possible. Please bring all regis-
tered keys that you have. It is recom-
mended that you visit a NISSAN dealer
for this service.
SWITCH OPERATION