ACURA NSX 2021 Owners Manual
Manufacturer: ACURA, Model Year: 2021, Model line: NSX, Model: ACURA NSX 2021Pages: 494, PDF Size: 16.57 MB
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399
uuMaintenance Under the Hood and Hatch uChanging the Engine Oil and Oil Filter
Maintenance
Changing the Engine  Oil and Oil Filter
You must change the engine oil and oil fi lter regularly in order to maintain the 
engine’s lubrication. The engine may be  damaged if they are not changed regularly.
Specialized equipment and procedures are re quired to change the engine oil and oil 
filter. Have an authorized Ac ura NSX dealer replace them.
Do not attempt to change the engine oil and oil filter yourself.
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uuMaintenance Under the Hood and Hatch uCooling System
Maintenance
Cooling System
This coolant is premixed with 50% antifreeze and 50% water. Do not add any 
straight antifreeze or water.
We recommend you check the engine coolant level every time you refuel. Check the 
reserve tank. Add the engine coolant accordingly.
1. Make sure the engine and radiator are cool.
2. Open the hatch.
2 Opening the Hatch  P. 391
3.Remove the left engine compartment 
cover.
2 Engine Compartment Cover P. 393
4.Check the amount of coolant in the reserve 
tank.
u If the coolant level is below the  MIN 
mark, add the specified coolant until it 
reaches the  MAX mark.
5. Inspect the cooling  system for leaks.
Specified coolant: Acura Long  Life Antifreeze/Coolant Type 2
■Checking the Coolant
1Cooling System
NOTICE
Genuine Acura engine cool ant is a 50/50 mixture of 
antifreeze and water that can withstand freezing at 
temperatures as low as a bout -31°F (-35°C). If your 
vehicle is consistently subjected to temperatures 
below this, the concentration of antifreeze in the 
coolant should be  increased. Consult an authorized 
Acura NSX dealer for details.
If Acura antifreeze/coolant  is not available, you may 
use another major brand of  non-silicate coolant as a 
temporary replacement. Check  that it is a high quality 
coolant recommended for  aluminum engines. 
Continued use of any non-Ac ura coolant can result in 
corrosion, causing the coo ling system to malfunction 
or fail. Have the cooling  system flushed and refilled 
with Acura antifreeze/cool ant as soon as possible.
Do not add rust inhibitors or other additives to your 
vehicle’s cooling system. Th ey may not be compatible 
with the coolant or with the engine components.
3WARNING
Removing the reserve tank cap while the 
engine is hot can cause the coolant to spray 
out, seriously scalding you.
Always let the engine and radiator cool 
down before removing the reserve tank 
cap.
Reserve 
Tank
MAX
MIN
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uuMaintenance Under the Hood and Hatch uCooling System
Maintenance
1. Make sure the engine and radiator are 
cool.
2. Turn the reserve tank cap 1/8 turn counter-
clockwise and relieve any pressure in the 
cooling system.
3. Push down and turn  the reserve tank cap 
counter-clockwise to remove it.
4. Pour coolant into the reserve tank until it 
reaches the  MAX mark.
5. Put the reserve tank cap back on, and 
tighten it fully.
■Adding the Coolant1Adding the Coolant
NOTICE
Pour the fluid slowly and ca refully so you do not spill 
any. Clean up any spills immediately; they can 
damage components in the engine compartment.
Reserve Tank 
Cap
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uuMaintenance Under the Hood and Hatch uInverter Coolant
Maintenance
Inverter Coolant
This coolant is premixed with 50% antifreeze and 50% water. Do not add any 
straight antifreeze or water.
We recommend you check the inverter co olant level every time you refuel.
Have an authorized Acura NSX deal er replace the inverter coolant.
1. Open the hood.
2 Opening the Hood P. 392
2.Check the fluid level in the tank.
3. If the coolant level has dropped below the 
MIN  level, have your vehicle serviced at an 
authorized Acura NSX dealer.
u Only a properly trained technician can 
refill the coolant an d check the system 
for leaks.
Specified coolant: Acura Long  Life Antifreeze/Coolant Type 2
■Checking the Coolant
1Inverter Coolant
NOTICE
Genuine Acura engine cool ant is a 50/50 mixture of 
antifreeze and water that can withstand freezing at 
temperatures as low as a bout -31°F (-35°C). If your 
vehicle is consistently subjected to temperatures 
below this, the concentration of antifreeze in the 
coolant should be  increased. Consult an authorized 
Acura NSX dealer for details.
If Acura antifreeze/coolant  is not available, you may 
use another major brand non- silicate coolant as a 
temporary replacement. Check  that it is a high quality 
coolant recommended fo r aluminum engines.
Continued use of any non-Ac ura coolant can result in 
corrosion, causing the coo ling system to malfunction 
or fail. Have the cooling  system flushed and refilled 
with Acura antifreeze/cool ant as soon as possible.
Do not add rust inhibitors or other additives to your 
vehicle’s cooling system. Th ey may not be compatible 
with the coolant or with the motor components.
MAX
MIN
Filler 
Tank
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uuMaintenance Under the Hood and Hatch uTransmission Fluids
Maintenance
Transmission Fluids
Have an authorized Acura NSX dealer chec k the fluid level and replace if necessary.
Do not attempt to check or change the  dual clutch transmission fluids yourself.
Have an authorized Acura NSX dealer chec k the fluid level and replace if necessary.
Do not attempt to check or change  the twin motor unit fluid yourself.
■Dual Clutch Transmission Fluids
Specified fluids:
Acura Automatic Transmission Fluid ATF DW-1
Acura Gear Oil GO-Type 2.0
■Twin Motor Unit Fluid
Specified fluid:
Acura Automatic Transmission Fluid ATF DW-1
1Dual Clutch Transmission Fluids
NOTICE
Do not mix Acura ATF DW-1 with other 
transmission fluids.
Using a transmission flui d other than Acura ATF 
DW-1 may adversely af fect the operation and 
durability of your vehicle’ s transmission, and damage 
the transmission.
Any damage caused by using a transmission fluid that 
is not equivalent to Acur a ATF DW-1 is not covered 
by Acura’s new vehicl e limited warranty.Clutch
Transmission
1Twin Motor Unit Fluid
NOTICE
Do not mix Acura ATF Type DW-1 with other 
transmission fluids.
Using a transmission flui d other than Acura ATF 
DW-1 may adversely af fect the operation and 
durability of your vehicl e’s twin motor unit, and 
damage the twin motor unit.
Any damage caused by using a transmission fluid that 
is not equivalent to Acur a ATF DW-1 is not covered 
by Acura’s new vehicl e limited warranty.
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uuMaintenance Under the Hood and Hatch uBrake Fluid
Maintenance
Brake Fluid
The fluid level should be between the  MIN 
and  MAX  marks on the side of the reserve 
tank.
Refilling Window  Washer Fluid
If the washer fluid is low,  a message appears on the dr iver information interface.
Pour the washer fluid carefully.  Do not overflow the reservoir.
Specified fluid:  Acura Heavy Duty Brake Fluid DOT 4
■Checking the Brake Fluid
1Brake Fluid
NOTICE
Brake fluid marked DOT 5 is not compatible with your 
vehicle’s braking system  and can cause extensive 
damage.
If the specified br ake fluid is not av ailable, you should 
use only DOT 4 fluid from  a sealed container as a 
temporary replacement.
Using any non-Acura brake fl uid can cause corrosion 
and decrease the longevity of the system. Have the 
brake system flushed and re filled with Acura Heavy 
Duty Brake Fluid DOT 4 as soon as possible.
If the brake fluid level is at or below the  MIN mark, 
have an authorized Acura NSX dealer inspect the 
vehicle for leaks or worn  brake pads as soon as 
possible.
MINReserve Tank
MAX
1 Refilling Window Washer Fluid
NOTICE
Do not use engine antifreeze or a vinegar/water 
solution in the windshield washer reservoir.
Antifreeze can damage y our vehicle’s paint. A 
vinegar/water solution ca n damage the windshield 
washer pump.
Use only commercially avai lable windshield washer 
fluid.
Avoid prolonged use of hard  water to prevent lime 
scale build up.
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Maintenance
Replacing Light Bulbs
Headlights
Headlights are LED type. Have an authorized Acura NSX dealer inspect and replace 
the light assembly.
Front Turn Signal/Parking Lights
Front turn signal/parking light s are LED type. Have an authorized Acura NSX dealer 
inspect and replace the light assembly.
Front Side Marker Lights
Front side marker lights are LED type. Have  an authorized Acura NSX dealer inspect 
and replace the light assembly.
Side Turn Signal/Emer gency Indicator Lights
Door mirror side turn lights are LED type . Have an authorized Acura NSX dealer 
inspect and replace the light assembly.
Daytime Running Lights
Daytime running lights are LED type. Have an authorized Acura NSX dealer inspect 
and replace the light assembly.
1 Headlights
The headlight aim is set by  the factory, and does not 
need to be adjusted. Howeve r, if you regularly carry 
heavy items in the trunk, have the aiming readjusted 
at an authorized Acura NS X dealer or by a qualified 
technician.
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uuReplacing Light Bulbs uRear Turn Signal Lights
Maintenance
Rear Turn Signal Lights
Rear Turn Signal lights are LED type. Have an authorized Acur a NSX dealer inspect 
and replace the light assembly.
Brake/Taillights
Brake/Taillights are LED type. Have an aut horized Acura NSX dealer inspect and 
replace the light assembly.
Rear Side Marker Lights
Rear side marker lights are LED type. Have  an authorized Acura NSX dealer inspect 
and replace the light assembly.
Taillights
Taillights are LED type. Have an authorized  Acura NSX dealer inspect and replace the 
light assembly.
Back-Up Lights
Back-up lights are LED type. Have an au thorized Acura NSX dealer inspect and 
replace the light assembly.
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uuReplacing Light Bulbs uRear License Plate Lights
Maintenance
Rear License Plate Lights
Rear license plate lights are LED type. Have  an authorized Acura NSX dealer inspect 
and replace the light assembly.
High-Mount Brake Light
High-mount brake light is LED type. Have  an authorized Acura NSX dealer inspect 
and replace the light assembly.
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Maintenance
Checking and Maintaining Wiper Blades
Checking Wiper Blades
If the wiper blade rubber has deteriorated , it will leave streaks, become noisy, and 
the hard surfaces of the blade may scratch the window glass.
Changing the Wiper Blade Rubber
1. While holding the wiper switch in the 
MIST  position, change the power mode to 
VEHICLE OFF.
2. Wiper arms will move into service position.
3. Lift both wiper arms.
1Changing the Wiper Blade Rubber
NOTICE
Avoid dropping the wiper arm  onto the windshield, it 
may damage the wiper arm  and/or the windshield.
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