2021 HONDA CIVIC SEDAN coolant

531
uuMaintenance Under the Hood uEngine Coolant
Continued
Maintenance
Engine Coolant
This coolant is premixed with 50% an tifreeze 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. 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.
3. Inspect the cooling system for leaks.
Specified coolant: Ho nda Long Life Antifreeze/Coolant Type 2
■Checking the Coolant
1Engine Coolant
NOTICE
Genuine Honda engine coolan t 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.
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 anti freeze/coolant as soon as
possible.
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.
MAX
MINReserve Tank
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uuMaintenance Under the Hood uEngine Coolant
532
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
1.5 L engine models
Reserve Tank
Cap
2.0 L engine models
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uuCleaning uExterior Care
566
Maintenance
A good coat of automotive body wax helps protect your vehicle’s paint from the
elements. Wax will wear off over time and expose your vehicle’s paint to the
elements, so reapply as necessary.
If you get gasoline, oil, engine coolant, or battery fluid on resin coated parts, they
may be stained or the coating may peel. Promptly wipe it away using a soft cloth and
clean water.
Wipe using a glass cleaner.
Aluminum is susceptible to deterioration caused by salt and other road
contaminants. When necessary, as early as possible use a sponge and mild detergent
to wipe away these contaminants. Do no t use a stiff brush or harsh chemicals
(including some commercial wheel cleaners). These can damage the protective finish
on aluminum alloy wheels, resulting in corrosion. Depending on the type of finish,
the wheels also may lose their luster or appear burnished. To avoid water stains,
wipe the wheels dry with a cloth while they are still wet.
■Applying Wax
■Maintaining the Bumpers and Other Resin Coated Parts
■Cleaning the Window
■Maintaining Aluminum Wheels*
1 Applying Wax
NOTICE
Chemical solvents and st rong cleaners can damage
the paint, metal, and plasti c on your vehicle. Wipe
away spills immediately.
1 Maintaining the Bumpers an d Other Resin Coated Parts
Ask a dealer about the corr ect coating material when
you want to repair the pa inted surface of the parts
made of resin.
* Not available on all models
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uuOverheating uHow to Handle Overheating
588
Handling the Unexpected
■Next thing to do
1.Check that the cooling fan is operating and
stop the engine once the temperature
gauge pointer comes down.
u If the cooling fan is not operating,
immediately stop the engine.
2. Once the engine has cooled down, inspect
the coolant level an d check the cooling
system components for leaks.
u If the coolant level in the reserve tank is
low, or no coolant in the tank, check that
the radiator is cool. Cover the reserve
tank cap with a hea vy cloth and open the
cap. Add coolant until it reaches the
MAX mark, and put the cap back on.
■Last thing to do
Once the engine has cooled sufficiently, restart it and check the temperature gauge.
If the temperature gauge pointer has gone do wn, resume driving. If it has not gone
down, contact a dealer for repairs.
1 How to Handle Overheating
If the coolant is leaking, contact a dealer for repairs.
Use water as an emergency/temporary measure only.
Have a dealer flush the system with proper antifreeze
as soon as possible.
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.
MAX
Reserve TankMIN
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605
uuSpecifications u
Continued
Information
■
Brake Fluid
■ Continuously Variable Transmission
Fluid
SpecifiedHonda Heavy Duty Brake Fluid DOT 3
SpecifiedHonda HCF-2
Capacity Change 3.7 US qt (3.5 L)
■ Engine Oil
■ Engine Coolant
Recommended·Honda Genuine Motor Oil 0W-20
·API Premium-grade 0W-20 detergent oil
Capacity Change 4.2 US qt (4.0 L)
Change
including
filter
4.4 US qt (4.2 L)
SpecifiedHonda Long-Life Antifreeze/Coolant Type2
Ratio 50/50 with distilled water
Capacity1.4 US gal (5.32 L)
(change including the remaining
0.2 US gal (0.75 L) in the reserve tank)
■ Tire
*1: Original tire size is mentioned on the tire information label on
the driver’s doorjamb.
*2: Models with 215/55R16 tires
*3: Models with 235/40R18 tires
Regular
Size*1215/55R16 93H
235/40R18 91W
Pressure
psi (kPa [kgf/cm2])Front32 (220 [2.2])*2
33 (225 [2.3])*3
Rear32 (220 [2.2])*2, *3
Compact
Spare Size
T125/80D16 97M
*2
T125/70R17 98M*3
Pressure
psi (kPa [kgf/cm2])60 (420 [4.2])
Wheel SizeRegular16 x 7J*2
18 x 8J*3
Compact Spare16 x 4T*2
17 x 4T*3
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607
uuSpecifications u
Information
■
Brake Fluid
■ Continuously Variable Transmission
Fluid
SpecifiedHonda Heavy Duty Brake Fluid DOT 3
SpecifiedHonda HCF-2
Capacity Change 3.9 US qt (3.7 L)
■ Engine Oil
■ Engine Coolant
Recommended·Honda Genuine Motor Oil 0W-20
·API Premium-grade 0W-20 detergent oil
Capacity Change 3.4 US qt (3.2 L)
Change
including
filter
3.7 US qt (3.5 L)
SpecifiedHonda Long-Life Antifreeze/Coolant Type2
Ratio 50/50 with distilled water
Capacity1.34 US gal (5.09 L)
(change including the remaining
0.2 US gal (0.75 L) in the reserve tank)
■ Tire
*1: Original tire size is mentioned on the tire information label on
the driver’s doorjamb.
*2: Models with 215/50R17 tires
*3: Models with 235/40R18 tires
Regular
Size*1215/50R17 91H
235/40R18 91W
Pressure
psi (kPa [kgf/cm2])Front32 (220 [2.2])*2
33 (225 [2.3])*3
Rear32 (220 [2.2])*2, *3
Compact
SpareSizeT125/80D16 97M*2
T125/70R17 98M*3
Pressure
psi (kPa [kgf/cm2])60 (420 [4.2])
Wheel SizeRegular17 x 7J*2
18 x 8J*3
Compact Spare16 x 4T*2
17 x 4T*3
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Index
619
Index
Index
Numbers
7-Speed Manual Shift Mode................... 436
Operation ............................................... 437
A
ABS (Anti-lock Brake System) .................. 499
Accessories and Modifications ................ 568
Accessory Power Socket ........................... 186
Adaptive Cruise Control (ACC) with Low
Speed Follow .................................... 91, 463
Adding the Coolant ................................. 532
Additives
Coolant .................................................. 531
Engine Oil ............................................... 524
Washer ................................................... 535
Additives, Engine Oil ............................... 524
Adjusting
Armrest .................................................. 179
Clock ...................................................... 126
Front Head Restraints .............................. 177
Front Seats.............................................. 172
Mirrors.................................................... 170
Rear Seats ............................................... 175
Steering Wheel ....................................... 169
Temperature ........................................... 113
Adjusting the Clock ................................. 126
Adjusting the Sound ........................ 214, 249
Agile Handling Assist ............................... 441 Air Conditioning System (Climate Control
System) .................................................... 193
Changing the Mode ................ 193, 194, 195
Defrosting the Windshield and Windows ............................................... 197
Dust and Pollen Filter ............................... 562
Recirculation/Fresh Air Mode ................... 196
Sensor ..................................................... 200
Synchronization Mode ............................. 199
Using Automatic Climate Control ............ 193
Air Pressure ............................... 549, 605, 607
Airbags ........................................................ 46
Advanced Airbags ..................................... 52
After a Collision ......................................... 49
Airbag Care ............................................... 61
Event Data Recorder .................................... 0
Front Airbags (SRS) .................................... 49
Indicator .............................................. 58, 84
Passenger Airbag Off Indicator .................. 59
Sensors ...................................................... 46
Side Airbags .............................................. 54
Side Curtain Airbags .................................. 56
AM/FM Radio .................................... 216, 256
Android Auto ............................................ 293
Anti-lock Brake System (ABS) .................. 499
Indicator .................................................... 83
Apple CarPlay ........................................... 290
Armrest ..................................................... 179
Audio Remote Controls ............................ 206
Audio System ............................ 202, 209, 227
Adjusting the Sound ........................ 214, 249 Audio/Information Screen................ 210, 228
Changing the Home Screen Icon
Layout ................................................... 232
Changing the Screen Interface ................ 246
Closing Apps ........................................... 248
Customizing the Meter............................ 233
Display Setup .................................. 215, 250
Error Messages ........................................ 297
General Information ................................ 300
Home Screen........................................... 239
iPod ................................................ 218, 268
Limitations for Manual Operation .............................. 251, 357, 384
Menu Customize ..................................... 247
MP3/WMA/AAC .............................. 221, 277
Reactivating ............................................ 205
Recommended Devices............................ 301
Remote Controls ..................................... 206
Security Code .......................................... 205
Selecting an Audio Source ....................... 251
Status Area ............................................. 245
Theft Protection ...................................... 205
USB Flash Drives ...................................... 301
USB Port(s) .............................................. 203
Wallpaper Setup.............................. 212, 237
Audio/Information Screen ............... 210, 228
Authorized Manuals ................................ 616
Auto Door Locking/Unlocking ................. 141
Customize ....................................... 121, 350
Auto High-Beam ....................................... 162
Indicator.................................................... 84
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621
Index
Coolant (Engine)...................................... 531
Adding the Coolant ................................ 532
Overheating ............................................ 587
Creeping (Continuously Variable Transmission) .......................................... 431
Cup Holders .............................................. 184
Customer Service Information ................ 617
Customized Features ............... 115, 318, 325
D
Daytime Running Lights .......................... 161
Dead Battery ............................................ 583
Defaulting All the Settings ...................... 351
Defrosting the Windshield and Windows ................................................. 197
Devices that Emit Radio Waves ............... 609
Dimming
Headlights .............................................. 158
Rearview Mirror ...................................... 170
Dipstick (Engine Oil) ................................ 525
Directional Signals (Turn Signal) ............. 157
Display Setup .................................... 215, 250
Display/Information Button ............ 110, 228
Door Mirrors ............................................. 171
Doors ........................................................ 128
Auto Door Locking.................................. 141
Auto Door Unlocking .............................. 141
Door Open Message ........................... 37, 95
Keys........................................................ 128 Locking/Unlocking the Doors from
the Inside............................................... 138
Locking/Unlocking the Doors from the Outside............................................ 131
DOT Tire Quality Grading ........................ 551
Driver Information Interface ................... 109
Warning and Information Messages .......... 95
Driving ....................................................... 415
Braking .................................................... 494
Continuously Variable Transmission ......... 431
Shifting Position .............................. 432, 434
Starting the Engine .......................... 422, 425
Dust and Pollen Filter ............................... 562
E
Eco Assist® System ...................................... 11
ECON Button ............................................. 438
Elapsed Time ............................................. 112
Electric Power Steering (EPS) System Indicator ............................................ 85, 593
Electronic Stability Control (ESC) ............. 439
Emergency ................................................ 599
Emergency Engine Stop ........................... 582
Emergency Trunk Opener ................ 144, 601
Emissions Testing (Readiness Codes) ....... 611
Engine
Coolant ................................................... 531
If the Battery Is Dead ............................... 583
Oil ........................................................... 524
Starting ........................................... 422, 425 Switch Buzzer.......................................... 152
Engine Coolant ......................................... 531
Adding the Coolant................................. 532
Overheating ............................................ 587
Temperature Gauge ................................ 108
Engine Oil ................................................. 524
Adding .................................................... 527
Checking................................................. 525
Displaying Maintenance Minder Information ........................................... 516
Low Oil Pressure Indicator ................. 81, 589
Recommended Engine Oil ....................... 524
ENGINE START/STOP Button .................... 153
Exhaust Gas Hazard (Carbon Monoxide) .. 75
Exterior Care (Cleaning) ........................... 565
Exterior Mirrors ........................................ 171
F
Features.................................................... 201
Filters
Dust and Pollen ....................................... 562
Oil ........................................................... 528
Flat Tire ..................................................... 573
Floor Mats ................................................. 564
Fluids Brake ...................................................... 534
Continuously Variable Transmission (CVT) ..................................................... 533
Engine Coolant ....................................... 531
Windshield Washer ................................. 535
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