2023 HONDA CIVIC maintenance

uuMaintenance Under the Hood uEngine Coolant
724
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 Coolant1Engine Coolant
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.
1 Adding 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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725
uuMaintenance Under the Hood uFluid: Transmission Fluid
Maintenance
Fluid: Transmission Fluid
Have a dealer check the fluid level and replace if necessary.
Do not attempt to check or change the continuously variable transmission fluid
yourself.
Have a dealer check the fluid level and replace if necessary.
Do not attempt to check or change th e manual transmission fluid yourself.
■Continuously Variable Transmission (CVT) Fluid
Specified fluid: Honda HCF-2
■Manual Transmission Fluid
Specified fluid: Honda MTF
Continuously variable transmission models
1Continuously Variable Transmission (CVT) Fluid
NOTICE
Do not mix Honda HCF-2 with other
transmission fluids.
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 Hond a HCF-2 is not covered by
Honda's new vehicle limited warranty.
Manual transmission models
1Manual Transmission Fluid
NOTICE
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.
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.
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726
uuMaintenance Under the Hood uBrake/Clutch* Fluid
Maintenance
Brake/Clutch* Fluid
The fluid level should be between the MIN
and MAX marks on the side of the reserve
tank.
The brake fluid reserve tank is also used for
your vehicle's clutch fluid. As long as you keep
the brake fluid level as in structed above, there
is no need for checking the clutch fluid level.
Specified fluid: Honda Heavy Duty Brake Fluid DOT 3
■Checking the Brake Fluid
1Brake/Clutch* 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 3 or DOT 4 fluid from a sealed
container as a temporary replacement.
Using any non-Honda brake fluid can cause corrosion
and decrease the longevity of the system. Have the
brake system flushed and re filled with Honda Heavy
Duty Brake Fluid DOT 3 as soon as possible.
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.
Reserve Tank
MIN
MAX
Models with Auto Idle Stop
Manual transmission models
Reserve Tank
MIN
MAX
Models without Auto Idle Stop
* Not available on all models
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727
uuMaintenance Under the Hood uRefilling Window Washer Fluid
Maintenance
Refilling Window Washer Fluid
Check the amount of window washer fluid.
If the level is low, fill the washer reservoir.
If the washer fluid is low, a message appears
on the driver information interface.
Pour the washer fluid carefully. Do not overflow the reservoir.1Refilling 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 buildup.Canadian models with Auto Idle Stop
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728
Maintenance
Replacing Light Bulbs
Headlights
Headlights are LED type. Have an authorized Honda dealer inspect and replace the
light assembly.
Fog Lights*
Fog lights are LED type. Have an authoriz ed Honda dealer inspect and replace the
light assembly.
Front Turn Signal Lights
Front turn signal lights are LED type. Have an authorized Honda dealer inspect and
replace the light assembly.
Front Side Marker Lights
Front side marker lights are LED type. Have an authorized Honda dealer inspect and
replace the light assembly.
Parking/Daytime Running Lights
Parking/daytime running lights are LED type . Have an authorized Honda dealer
inspect and replace the light assembly.
Side Turn Signal/Emergency Indicator Lights*
Door mirror side turn lights are LED type. Have an authorized Honda 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 cargo area, have the aiming
readjusted at a dealer or by a qualified technician.
* Not available on all models
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729
uuReplacing Light Bulbs uBrake Light, Taillight, Rear Side Marker Light, and Rear Turn Signal Light Bulbs
Continued
Maintenance
Brake Light, Taillight, Rear Side Marker Light, and
Rear Turn Signal Light Bulbs
When replacing, use the following bulbs.
1.Pry on the edge of the cover using a flat-tip
screwdriver to remove the cover.
u Wrap the flat-tip screwdriver with a cloth
to prevent scratches.
2. Unscrew the bolts.
Brake Ligh t: LED
Taillight: LED
Rear Side Marker Light: LED
Rear Turn Signal Light: 21 W (Amber)
1 Brake Light, Taillight, Rear Side Marker Light, and Rear Turn
Signal Light Bulbs
Brake lights, taillight s, and rear side marker lights are
LED type. Have an authorized Honda dealer inspect
and replace the light assembly.
Cover
Bolt
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730
uuReplacing Light Bulbs uBrake Light, Taillight, Rear Side Marker Light, and Rear Turn Signal Light Bulbs
Maintenance
3.Grasp underneath the taillight and rotate it
upward to release the lower snap pin.
4. Rotate the taillight ou tward to release the
upper snap pin.
5. Pull the light assembly out of the rear pillar.
6. Turn the socket counter-clockwise and
remove it.
7. Remove the old bulb and insert a new bulb.
8. Align the pins with the body grommets,
then push in unt il they fully seat.
Lower Snap Pin
Upper Snap Pin
Bulb
Socket
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731
uuReplacing Light Bulbs uTaillight and Back-Up Light Bulbs
Maintenance
Taillight and Back-Up Light Bulbs
When replacing, use the following bulbs.
1.Remove the cover by prying on the edge
using a flat-tip screwdriver.
u Wrap the flat-tip screwdriver with a cloth
to prevent scratches.
2. Turn the socket counter-clockwise and
remove it.
3. Remove the old bulb and insert a new bulb.
Rear License Plate Light
Rear license plate light is LED type. Have an authorized Honda dealer inspect and
replace the light assembly.
Taillight: LED
Back-Up Light: 16 W
1 Taillight and Back-Up Light Bulbs
Taillights are LED type. Ha ve an authorized Honda
dealer inspect and replace the light assembly.
Cover
Bulb
Socket
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