2022 ACURA NSX service

410
uuChecking and Maintaining Tires uDOT Tire Quality Grading (U.S. Vehicles)
Maintenance
DOT Tire Quality Grading (U.S. Vehicles)
The tires on your vehicle meet all U.S. Federal Safety
Requirements. All tires are also graded for treadwear, traction,
and temperature performance a ccording to Department of
Transportation (DOT) standards. The following explains these
gradings.
Quality grades can be found where applicable on the tire sidewall
between tread shoulder an d maximum section width.
The treadwear grade is a comparative rating based on the wear
rate of the tire when tested un der controlled conditions on a
specified government test course. For example, a tire graded 150
would wear one and one-half (1 1/2) times as well on the
government course as a tire graded 100. The relative performance
of tires depends upon the actual co nditions of their use, however,
and may depart significantly from the norm due to variations in
driving habits, service practices and differences in road
characteristics and climate.
■Uniform Tire Quality Grading
■Treadwear
1 Uniform Tire Quality Grading
For example:
Treadwear 200
Traction AA
Temperature A
All passenger car tires must conform
to Federal Safety Requirements in
addition to these grades.
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412
uuChecking and Maintaining Tires uWear Indicators
Maintenance
Wear Indicators
The groove where the wear indicator is
located is about 1/16 inch (about 1.6 mm)
shallower than elsewhere on the tire. If the
tread has worn so that the indicator is
exposed, replace the tire.
Worn out tires have poor traction on wet
roads.
Tire Service Life
The life of your tires is dependent on many factors, including driving habits, road
conditions, vehicle loading, inflation pre ssure, maintenance history, speed, and
environmental conditions (even when the tires are not in use).
In addition to regular inspections and inflation pressure maintenance, it is
recommended that you have annual inspections performed once the tires reach five
years old. All tires should be removed fro m service after 10 years from the date of
manufacture, regardless of their condition or state of wear.
1 Checking Tires
High speed driving
We recommend that you do not drive on public roads
faster than the posted sp eed limits and conditions
allow. If you intend to driv e at sustained high speeds
(over 168 mph or 270 km/h), such as at a track or
other closed course venue , adjust the cold tire
pressures as shown below to avoid excessive heat
build up and sudden tire failure.
Tire SizeFront:
245/35ZR19 (93Y)
Rear:
305/30ZR20 (103Y)
Pressure Front: 38 psi (260 kPa, 2.6 kgf/cm
2)
Rear:
38 psi (260 kPa, 2.6 kgf/cm
2)
Example of a Wear
Indicator mark
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419
Maintenance
Climate Control System Maintenance
Air Conditioning
To ensure proper and safe operation, the Society of Automotive Engineers (SAE
J2845) recommends that the refrigerant system only be serviced by trained and
certified technicians.
Never repair or replace the air conditio ning evaporator (cooling coil) with one
removed from a used or salvaged vehicle.
New replacement mobile air conditioning evaporators must be certified (and
labeled) as meeting SAE Standard J2842.
Dust and Pollen Filters
The climate control system is equipped wi th dust and pollen filters that collect
pollen, dust, and other debris in the air. The Maintenance MinderTM messages will let
you know when to replace the filters.
We recommend that you replace the dust an d pollen filters sooner when using your
vehicle in areas with high concentrations of dust.
1 Air Conditioning
NOTICE
Vented refrigerant is harmful to the environmentM
To avoid refrigerant from venting, never replace the
evaporator with one re moved from a used or
salvaged vehicleM
Refrigerant in your vehicle

435Continued
Handling the Unexpected
If a Tire Goes Flat
Temporarily Repairing a Flat Tire
If the tire has a large cut or is otherwise severely damaged, you will need to have the
vehicle towed. If the tire only has a sma ll puncture, from a small nail for instance,
you can use the temporary tire repair kit so that you can drive to the nearest service
station for a more permanent repair.
If a tire goes flat while driving, grasp the steering wheel firmly, and brake gradually
to reduce speed. Then, stop in a safe place.
1. Park the vehicle on a firm, level, and non-slippery surface. Apply the parking
brake.
2. Put the transmission into
(P.
3. Turn on the hazard warning lights an d set the power mode to VEHICLE OFF.
1Temporarily Repairing a Flat Tire
The kit should not be used in the following situations.
Instead, contact an authorized Acura NSX dealer or a
roadside assistant to have the vehicle towed.
•The tire sealant has expired.•More than one tire is punctured.•The puncture or cut is larger than 3/16 inch (4 mm).•The tire side wall is da maged or the puncture is
outside the contact area.
•Damage has been caused by driving with the tire
extremely under inflated.
•The tire bead is no longer seated.•The rim is damaged.
Do not remove a nail or screw that punctured the
tire. If you remove it from the tire, you may not be
able to repair the puncture using the kit.
NOTICE
Do not use a puncture-repairing agent other than the
one provided in the kit that came with your vehicle. If
a different agent is used, you may permanently
damage the tire pressure sensor.
When the puncture isYKit Use
Smaller than 3/16 inch
(4 mm)Yes
Larger than 3/16 inch (4 mm)No
Contact
Area
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441
uuIf a Tire Goes Flat uTemporarily Repairing a Flat Tire
Continued
Handling the Unexpected
4. Recheck the air pressure using the gauge
on the air compressor.
u Do not turn the air compressor on to
check the pressure.
5. If the air pressure is:
• Less than 19 psi (130 kPa):
Do not add air or continue driving. The
leak is too severe. Call for help and have
your vehicle towed.
2 Emergency Towing P. 465
•32 psi (220 kPa) or more:
Continue driving for another five
minutes or until you reach the nearest
service station if less than five minutes
away. Do not exceed 50 mph (80 km/h).
u Stop and check the air pressure again. If
the air pressure does not go down after
the five minute drive, you do not need to
check the pressure any more. Drive to
the nearest service station to fix or
replace the tire.
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uuIf a Tire Goes Flat uTemporarily Repairing a Flat Tire
442
Handling the Unexpected
• Greater than 19 psi (130 kPa), but less than
32 psi (220 kPa):
Turn the air compressor on to inflate the
tire until the tire pressure reaches 32 psi
(220 kPa).
2 Injecting Sealant and Air P. 437
Then, drive carefully for five more minutes
or until you reach the nearest service station
if less than five minutes away.
Do not exceed 50 mph (80 km/h).
u You should repeat this procedure as long
as the air pressure is within this range.
1Distributing the Sealant in the Tire
Refer to the driver’s doorja mb label for the specified
pressure.
3WARNING
Running the engine with the vehicle in an
enclosed or even partly enclosed area can
cause a rapid buildup of toxic carbon
monoxide.
Breathing this colorless, odorless gas can
cause unconsciousness and even death.
Only run the engine to power the air
compressor with th e vehicle outdoors.
Deflation ButtonAir Pressure Gauge
Air Compressor Switch
OFF
ON
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451
uuIf the 12-Volt Battery Is Dead uJump Starting Procedure
Handling the Unexpected
6. Connect the other end of the second
jumper cable to the front frame as shown.
Do not connect this jumper cable to any
other part.
7. If your vehicle is connected to another
vehicle, start the assisting vehicle’s engine
and increase its rpm slightly.
8. Attempt to start your ve hicle’s engine. If it
turns over slowly, check that the jumper
cables have good metal-to-metal contact.
Once your vehicle’s engine has started, re move the jumper cables in the following
order.
1. Disconnect the jumper cable from your vehicle’s ground.
2. Disconnect the other end of the jumper cable from the booster battery -
terminal.
3. Disconnect the jumper cable from your vehicle’s 12-volt battery + terminal.
4. Disconnect the other end of the jumper cable from the booster battery +
terminal.
Have your vehicle inspected by a nearby service station or an authorized Acura NSX
dealer.
■What to Do After the Engine Starts
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458
uuIndicator, Coming On/Blinking uIf the Transmission System Indicator Blinks along with the Warning Message
Handling the Unexpected
If the Transmission System Indicator Blinks along
with the Warning Message
■Reasons for the in dicator to blink
The transmission is malfunctioning.
■What to do when the indicator blinks
• Immediately have your vehicle inspected by
an authorized Acura NSX dealer.
• Put the transmission into
(N when you turn
the power system on.
u Check to verify the
(N position on the
instrument panel is selected and if the
indicator on the
(N button is
illuminating or blinking.
u The power system cannot be turned on
unless the parking brake is set.
2 Turning on the Power P. 319
1If the Transmission System In dicator Blinks along with the
Warning Message
You may not be able to turn on the power system.
Make sure to set the parking brake when parking
your vehicle.
Call a professional towing service if you need to tow
your vehicle. 2 Emergency Towing P. 465
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