Get Maintenance -> Maintenance Under the Hood Guide for Honda Civic 4 Door Eleventh Generation (2023-2026)

Maintenance Under the Hood

Maintenance Items Under the Hood

1.5 L engine models

Brake/Clutch^*Fluid

(Black Cap)

Engine Oil Fill Cap

Washer Fluid

(Blue Cap)

Engine Coolant

Reserve Tank

Battery

Engine Oil Dipstick

(Orange)

Radiator Cap

* Not available on all models

Continued

705

uuMaintenance Under the HooduMaintenance Items Under the Hood

2.0 L engine models with Auto Idle Stop

Engine Oil Dipstick

(Orange)

Brake/Clutch^*

Fluid (Black Cap)

Engine Oil Fill Cap

Washer Fluid

(Blue Cap)

Battery

Engine Coolant

Reserve Tank

Radiator Cap

* Not available on all models

706

uuMaintenance Under the HooduMaintenance Items Under the Hood

2.0 L engine models without Auto Idle Stop

Engine Oil Dipstick

(Black)

Brake/Clutch Fluid

(Black Cap)

Engine Oil Fill Cap

Engine Coolant

Reserve Tank Cap

Washer Fluid

(Blue Cap)

Battery

Engine Coolant

Reserve Tank

707

uuMaintenance Under the HooduOpening the Hood

Opening the Hood

1. Park the vehicle on a level surface, and set

the parking brake.

1Opening the Hood

Hood Release Handle

3WARNING

The hood support rod can become very hot

due to heat from the engine.

2. Pull the hood release handle under the

driver's side lower corner of the dashboard.

u The hood will pop up slightly.

Pull

To ensure against possible burns, do not

handle the metal section of the rod: Use

the foam grip instead.

3. Push the hood latch lever (located under

the front edge of the hood to the center) to

the side and raise the hood. Once you have

raised the hood slightly, you can release the

lever.

NOTICE

Do not open the hood when the wiper arms are

raised. The hood will strike the wipers, resulting in

possible damage to the hood and/or the wipers.

Lever

2.0 L engine models

NOTICE

Do not press the engine cover forcibly. This may

damage the engine cover and component parts.

4. Remove the support rod from the clamp

using the grip. Mount the support rod in

the hood.

Support Rod

When closing the hood, check that the hood is

securely latched.

Grip

If the hood latch lever moves stiffly, or if you can

open the hood without lifting the lever, the latch

mechanism should be cleaned and lubricated.

When closing, remove the support rod, and

stow it in the clamp, then gently lower the

hood. Remove your hand at a height of

approximately 12 inches (30 cm) and let the

hood close.

Do not open the hood while the Auto Idle Stop^*

function is activated.

Clamp

* Not available on all models

708

uuMaintenance Under the HooduRecommended Engine Oil

Recommended Engine Oil

Use a genuine engine oil or another commercial engine oil of suitable type and

viscosity (for the ambient temperature) as shown in the image that follows.

1Recommended Engine Oil

Engine Oil Additives

Your vehicle does not require oil additives. In fact,

they may adversely affect the engine performance

and durability.

Oil is a major contributor to your engine's performance and longevity. If you drive

the vehicle with insufficient or deteriorated oil, the engine may fail or be damaged.

Models with Auto Idle Stop

Genuine Engine Oil

Commercial Engine Oil

●

Honda Genuine Motor Oil

Premium-grade 0W-20 detergent oil

with an API Certification Seal on the

container.

Ambient Temperature

*1:Formulated to improve fuel economy.

Continued

709

uuMaintenance Under the HooduRecommended Engine Oil

Models without Auto Idle Stop

1Recommended Engine Oil

The following seal indicates the oil is energy

conserving and that it meets the American Petroleum

Institute's latest requirements.

Genuine Engine Oil

Commercial Engine Oil

●

Honda Genuine Motor Oil

API service SN or higher grade

API Certification Mark “Starburst”

Ambient Temperature

*1:Formulated to improve fuel economy.

Synthetic oil

■

You may also use synthetic motor oil if it is labeled with the API Certification Seal

and is the specified viscosity grade.

710

uuMaintenance Under the HooduOil Check

Oil Check

We recommend that you check the engine oil level every time you refuel.

Park the vehicle on level ground.

1Oil Check

If the oil level is near or below the lower mark, slowly

add oil, being careful not to overfill.

Wait approximately three minutes after turning the engine off before you check the oil.

1. Remove the dipstick (orange or black).

2. Wipe the dipstick with a clean cloth or

paper towel.

1.5 L engine models

3. Insert the dipstick back all the way into its

hole.

2.0 L engine models with Auto Idle Stop

Continued

711

uuMaintenance Under the HooduOil Check

2.0 L engine models without Auto Idle

Stop

712

uuMaintenance Under the HooduOil Check

4. Remove the dipstick again, and check the

level. It should be between the upper and

lower marks. Add oil if necessary.

1Oil Check

1.5 L engine models

NOTICE

Under certain driving conditions, it is normal for the

engine oil level to rise above the upper mark. If you

have a concern, consult a dealer for details.

Upper Mark

Lower Mark

2.0 L engine models

Upper Mark

Lower Mark

713

uuMaintenance Under the HooduAdding Engine Oil

Adding Engine Oil

1. Unscrew and remove the engine oil fill cap.

2. Add oil slowly.

1.5 L engine models

1Adding Engine Oil

NOTICE

3. Reinstall the engine oil fill cap, and tighten

it securely.

Do not fill the engine oil above the upper mark.

Overfilling the engine oil may result in leaks and

engine damage.

4. Wait for three minutes and recheck the

engine oil dipstick.

If any oil spills, wipe it away immediately. Spilled oil

may damage the engine compartment components.

Engine Oil

Fill Cap

2.0 L engine models with Auto Idle Stop

Engine Oil

Fill Cap

2.0 L engine models without Auto Idle

Stop

Engine Oil

Fill Cap

714

uuMaintenance Under the HooduChanging the Engine Oil and Oil Filter

Changing the Engine Oil and Oil Filter

You must change the engine oil and oil filter regularly in order to maintain the

engine's lubrication. The engine may be damaged if they are not changed regularly.

1Changing the Engine Oil and Oil Filter

NOTICE

You may damage the environment if you do not

dispose of the oil in a suitable way. If you are

changing the oil by yourself, appropriately dispose of

the used oil. Put the oil in a sealed container and take

it to a recycling center. Do not throw the oil away

into a garbage can or onto the ground.

Change the oil and filter in accordance with the maintenance message on the driver

information interface.

1. Run the engine until it reaches normal

operating temperature, and then turn the

engine off.

Models with Auto Idle Stop

2. Open the hood and remove the engine oil

fill cap.

3. Remove the Phillips-head screws and

slotted head screws by turning 90°

counter-clockwise on the undercarriage

and remove the under cover.

Screw

Under Cover

Models without Auto Idle Stop

Screw

Under Cover

Continued

715

uuMaintenance Under the HooduChanging the Engine Oil and Oil Filter

4. Remove the drain bolt and washer from

the bottom of the engine, and drain the

oil into a suitable container.

1.5 L engine models

Drain Bolt

Washer

2.0 L engine models with Auto Idle Stop

Drain Bolt

Washer

2.0 L engine models without Auto Idle

Stop

Drain Bolt

Washer

716

uuMaintenance Under the HooduChanging the Engine Oil and Oil Filter

5. Remove the oil filter and dispose of the

remaining oil.

6. Check that the filter gasket is not stuck to

the engine contact surface.

1.5 L engine models

1Changing the Engine Oil and Oil Filter

You will need a special wrench to replace the oil

filter. You can buy this wrench from a dealer.

u If it is stuck, you must detach it.

7. Wipe away dirt and dust adhering to the

contact surface of the engine block, and

install a new oil filter.

u Apply a light coat of new engine oil to

the filter gasket.

When installing the new oil filter, follow the

instructions supplied with the oil filter.

Reinstall the engine oil fill cap. Start the engine. If the

Engine oil pressure low appears, turn off the

engine, and check your work.

Oil Filter

8. Put a new washer on the drain bolt, then

reinstall the drain bolt.

2.0L engine models with Auto Idle Stop

u Tightening torque:

30 lbf∙ft (40 N∙m, 4.0 kgf∙m)

9. Pour the recommended engine oil into the

engine.

u Engine oil change capacity (including

filter):

Oil Filter

1.5 L engine models

3.7 US qt (3.5 L)

2.0 L engine models with Auto Idle Stop

4.4 US qt (4.2 L)

2.0 L engine models without Auto Idle Stop

5.7 US qt (5.4 L)

Continued

717

uuMaintenance Under the HooduChanging the Engine Oil and Oil Filter

10. Reinstall the engine oil fill cap securely and

start the engine.

2.0 L engine models without Auto Idle

Stop

11. Run the engine for a few minutes, and

then check that there is no leak from the

drain bolt or oil filter.

12. Stop the engine, wait for three minutes,

and then check the oil level on the

dipstick.

Oil Filter

u If necessary, add more engine oil.

718

uuMaintenance Under the HooduEngine Coolant

Models with Auto Idle Stop

Engine Coolant

1Engine Coolant

Specified coolant: Honda Long Life Antifreeze/Coolant Type 2

3

WARNING

This coolant is premixed with 50% antifreeze and 50% water. Do not add any

straight antifreeze or water.

Removing the radiator cap while the

engine is hot can cause the coolant to spray

out, seriously scalding you.

We recommend you check the engine coolant level every time you refuel. Check the

reserve tank first. If it is completely empty, also check the coolant level in the

radiator. Add the engine coolant accordingly.

Always let the engine and radiator cool

down before removing the radiator cap.

Reserve Tank

■

NOTICE

1. Make sure the engine and radiator are

cool.

Reserve Tank

Genuine Honda engine coolant is a 50/50 mixture of

antifreeze and water that can withstand freezing at

temperatures as low as about −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 a dealer for

details.

2. Check the amount of coolant in the reserve

tank.

MAX

MIN

u If the coolant level is below the MIN

mark, add the specified coolant until it

reaches the MAX mark.

3. Inspect the cooling system for leaks.

If Honda 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-Honda coolant can result

in corrosion, causing the cooling system to

malfunction or fail. Have the cooling system flushed

and refilled with Honda antifreeze/coolant as soon as

possible.

Continued

719

uuMaintenance Under the HooduEngine Coolant

1Engine Coolant

Radiator

■

Do not add rust inhibitors or other additives to your

vehicle's cooling system. They may not be compatible

with the coolant or with the engine components.

1. Make sure the engine and radiator are

cool.

2. Turn the radiator cap 1/8 turn counter-

clockwise and relieve any pressure in the

cooling system.

1Radiator

NOTICE

3. Push down and turn the radiator cap

counter-clockwise to remove it.

4. The coolant level should be up to the base

of the filler neck. Add coolant if it is low.

5. Put the radiator cap back on, and tighten it

fully.

Pour the fluid slowly and carefully so you do not spill

any. Clean up any spills immediately; they can

damage components in the engine compartment.

Radiator Cap

720

uuMaintenance Under the HooduEngine Coolant

Models without Auto Idle Stop

Engine Coolant

1Engine Coolant

Specified coolant: Honda Long Life Antifreeze/Coolant Type 2

3

WARNING

This coolant is premixed with 50% antifreeze and 50% water. Do not add any

straight antifreeze or water.

Removing the reserve tank cap while the

engine is hot can cause the coolant to spray

out, seriously scalding you.

We recommend you check the engine coolant level every time you refuel. Check the

reserve tank. Add the engine coolant accordingly.

Always let the engine and radiator cool

down before removing the reserve tank

cap.

Checking the Coolant

■

1. Make sure the engine and radiator are

cool.

NOTICE

2. Check the amount of coolant in the reserve

tank.

Genuine Honda engine coolant is a 50/50 mixture of

antifreeze and water that can withstand freezing at

temperatures as low as about −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 a dealer for

details.

u If the coolant level is below the MIN

mark, add the specified coolant until it

reaches the MAX mark.

3. Inspect the cooling system for leaks.

Reserve Tank

If Honda 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-Honda coolant can result

in corrosion, causing the cooling system to

malfunction or fail. Have the cooling system flushed

and refilled with Honda antifreeze/coolant as soon as

possible.

Continued

721

uuMaintenance Under the HooduEngine Coolant

1Engine Coolant

Adding the Coolant

■

Do not add rust inhibitors or other additives to your

vehicle's cooling system. They may not be compatible

with the coolant or with the engine components.

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.

1Adding the Coolant

NOTICE

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.

Pour the fluid slowly and carefully so you do not spill

any. Clean up any spills immediately; they can

damage components in the engine compartment.

Reserve Tank Cap

5. Put the reserve tank cap back on, and

tighten it fully.

722

uuMaintenance Under the HooduFluid: Transmission Fluid

Fluid: Transmission Fluid

Continuously variable transmission models

1Continuously Variable Transmission (CVT) Fluid

Continuously Variable Transmission (CVT) Fluid

■

NOTICE

Specified fluid: Honda HCF-2

Do not mix Honda HCF-2 with other

transmission fluids.

Have a dealer check the fluid level and replace if necessary.

Using a transmission fluid other than Honda HCF-2 may

adversely affect 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 Honda HCF-2 is not covered by

Honda's new vehicle limited warranty.

Do not attempt to check or change the continuously variable transmission fluid

yourself.

Manual transmission models

1Manual Transmission Fluid

Manual Transmission Fluid

■

NOTICE

Specified fluid: Honda MTF

If Honda MTF is not available, you may use the API

certificated SAE 0W-20 or 5W-20 viscosity motor oil as a

temporary measure.

Have a dealer check the fluid level and replace if necessary.

Replace with MTF as soon as possible. Motor oil does

not contain the proper additives for the transmission

and continued use can cause decreased shifting

performance and lead to transmission damage.

Do not attempt to check or change the manual transmission fluid yourself.

723

uuMaintenance Under the HooduBrake/Clutch^*Fluid

Brake/Clutch^*Fluid

1Brake/Clutch^*Fluid

Specified fluid: Honda Heavy Duty Brake Fluid DOT 3

NOTICE

Brake fluid marked DOT 5 is not compatible with your

vehicle's braking system and can cause extensive

damage.

Checking the Brake Fluid

■

The fluid level should be between the MIN

and MAX marks on the side of the reserve

tank.

Models with Auto Idle Stop

If the specified brake fluid is not available, you should

use only DOT 3 or DOT 4 fluid from a sealed

container as a temporary replacement.

MAX

Manual transmission models

The brake fluid reserve tank is also used for

your vehicle's clutch fluid. As long as you keep

the brake fluid level as instructed above, there

is no need for checking the clutch fluid level.

MIN

Using any non-Honda brake fluid can cause corrosion

and decrease the longevity of the system. Have the

brake system flushed and refilled with Honda Heavy

Duty Brake Fluid DOT 3 as soon as possible.

Reserve Tank

Models without Auto Idle Stop

If the brake fluid level is at or below the MIN mark,

have a dealer inspect the vehicle for leaks or worn

brake pads as soon as possible.

MAX

MIN

Reserve Tank

* Not available on all models

724

uuMaintenance Under the HooduRefilling Window Washer Fluid

Refilling Window Washer Fluid

Check the amount of window washer fluid.

1Refilling Window Washer Fluid

If the level is low, fill the washer reservoir.

NOTICE

Do not use engine antifreeze or a vinegar/water

solution in the windshield washer reservoir.

Antifreeze can damage your vehicle's paint. A

vinegar/water solution can damage the windshield

washer pump.

Canadian models with Auto Idle Stop

If the washer fluid is low, a message appears

on the driver information interface.

Use only commercially available windshield washer

fluid.

Avoid prolonged use of hard water to prevent lime

scale buildup.

Pour the washer fluid carefully. Do not overflow the reservoir.

725

Maintenance -> Maintenance Under the Hood for Your Honda Civic 4 Door Eleventh Generation (2023-2026)

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