2021 HONDA ACCORD SEDAN engine coolant

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Quick Reference Guide
Maintenance (P 539)
Under the Hood (P 550)
●Check engine oil, engine coolant, and windshield washer
fluid. Add when necessary.
●Check brake fluid.●Check the battery condition monthly.
aPull the hood release handle under the corner of the
dashboard.
bLocate the hood latch lever, push it to the side, and then
raise the hood. Once you have raised the hood slightly, you
can release the lever.
cWhen finished, close the hood and make sure it is firmly
locked in place.
Lights (P 566)
●Inspect all lights regularly.
Wiper Blades (P 574)
●Replace blades if they leave streaks
across the windshield or become noisy.
Tires (P 577)
●Inspect tires and wheels regularly.●Check tire pressures regularly.●Install snow tires for winter
driving.

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uuIndicators uDriver Information Interface Wa rning and Information Messages
Instrument Panel
MessageConditionExplanation
●Appears when the engine coolant temperature gets
abnormally high.
2 Overheating P. 613
●Appears if the automatic brake hold is automatically
canceled while it is in operation.●Immediately depress the brake pedal.
●Appears when the automa tic brake hold system is
turned off.
2 Automatic Brake Hold P. 515
●Appears when the automa tic brake hold button is
pressed without wearing the driver’s seat belt.●Fasten the driver’s seat belt.
2 Automatic Brake Hold P. 515

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uuIndicators uDriver Information Interface Wa rning and Information Messages
Continued
Instrument Panel
MessageConditionExplanation
●Appears when Auto Idle Stop does not activate for
some reason.
●Appears when the engine restarts automatically.●Appears when the battery temperature is around
41°F (5°C) or lower.
2 Auto Idle Stop Activates When: P. 439
●Appears when Auto Idle Stop does not activate
because the climate control system is in use, and the
difference between the set temperature and actual
interior temperature becomes significant.
●Appears when Auto Idle Stop does not activate
because the engine coolant temperature is too low
or high.
●Appears when Auto Idle Stop does not activate
because the battery charge level is low.
●Appears when the battery is low performance.
Continuously variable transmission models

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Instrument Panel
Gauges and Displays
Gauges
Gauges include the speedometer, fuel gauge, and other related indicators. They are
displayed when the power mode is in ON.
Displays your driving speed in mph (U.S.) or km/h (Canada).
Displays the amount of fuel left in the fuel tank.
Displays the temperature of the engine coolant.
■Speedometer
■Fuel Gauge
■Temperature Gauge
1Speedometer
You can show another speed unit on the driver
information interface and set the displayed
measurements to read in either mph and km/h.
2 Tachometer P. 151
1Fuel Gauge
NOTICE
You should refuel when the reading approaches .
Running out of fuel can cause the engine to misfire,
damaging the cata lytic converter.
The actual amount of remain ing fuel may differ from
the fuel gauge reading.E
1 Temperature Gauge
NOTICE
Driving with the temperat ure gauge pointer in the
upper zone can cause serious engine damage. Pull
safely to the side of th e road and allow engine
temperature to return to normal.
2 Overheating P. 613

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uuGeneral Information on the Audio System uHonda App License Agreement
Features
E. Information Coll ection and Storage
1. Information Collection, Use, Transmission and Storage of Data. Consent to Use of Data:
You agree that HONDA and PROVIDERS may
collect and use your information gathered in any manner as part of product support services related to the SOFTWARE or related services.
HONDA may share such information with third parties, including, without limitation, PROVIDERS, th ird party software and services
suppliers, their affiliates and/or their desi gnated agents, solely to improve their products or to provide services or technolo gies to you.
HONDA, third party software and systems s uppliers, their affiliates and/or their designated agent may disclose this information to others,
but not in a form that pe rsonally identifies you.
2. Information Storage.
Depending on the type of multimedia system you have in your VEHICLE, certain information may be stored for ease
of use of the SOFTWARE including, without limitation, search hi story, location history in certain applications, previous and saved
destinations, map locations within certain applications, and device numbers and contact information.
(a) Vehicle Health Information.
Your VEHICLE may remotely trans mit information regarding the status and health of your VEHICLE
(“VEHICLE INFORMATION”) to HONDA without notification to you. VEHICLE INFORMATION may contain VEHICLE maintenance and
malfunction status that is derived from VEHICLE diagnostic data and includes, but is not limited to, status of powered doors and windows,
battery life data, battery charging data, VEHICLE speed, coolant temperat ure, air compressor revolution, output power, warning codes,
diagnostic trouble codes, fuel injection volu me, and engine rotations per minute. VEHICL E HEALTH INFORMATION may be used by HON DA
for research and development, to deliver HONDA SERVICES and information to you, and to contact you, and is retained only for a period
of time necessary to fulfill these goals.
(b) VEHICLE Geolocation Data (non-navigation/map based).
If you opt-in to geolocation-based SERVICES, your vehicle’s geolocation data
(latitude and longitude) will be automatically se nt from your VEHICLE to HONDA and PROVIDERS.
(c) You understand that the inputting or uploading of information to your VEHICLE’s multimedia system or the SOFTWARE or SERVIC ES is
at your own risk and that HONDA is not responsible for unauthorized access to or use of any personal or other information. All information
uploaded to the SOFTWARE and SERVICES may be stored on your VEHICLES’s multimedia system and you understand that the security and
safety of your VEHICLE’s multimedia system is your sole responsibility.

Continued417
uuWhen Driving uStarting the Engine
Driving
■To stop the engine1Remote Engine Start*
The engine may not start by the remote engine start
if:
•You have disabled a remo te engine start setting
using the audio/information screen.
•The power mode is not in VEHICLE OFF.
•The transmission is in a position other than ( P.
•The hood is open, or any door or the trunk is
unlocked.
•You have already used the remote twice to start
the engine.
•The battery charge is too low.
•Another registered remo te is in the vehicle.
•There is any antenna failure.•The door is unlocked with the built-in key.
•The engine oil pressure is low.
•The engine coolant temper ature is extremely high.•The telematics unit* malfunctions.
•The security system alarm is not set.Press and hold the
button for one second.
Go within the range,
and try again.
The exterior lights flash once if the engine stops successfully.
The exterior lights will not flash when the remote is out of
the smart entry system range.
The engine will not stop.
* Not available on all models

uuWhen Driving uStarting the Engine
418
Driving
1Remote Engine Start*
The engine may stop whil e it is running if:•You do not start the vehicl e within 10 minutes of
starting the engine with the remote.
•The engine is stopped by using the remote.•The security system alarm is activated.•The door is unlocked with the built-in key.•The hood is open.•The engine coolant temper ature is extremely high.•The battery is low.•The engine oil pressure is low.•The malfunction indicator la mp comes on if there is
a problem with the emissions control systems.
•You press the ENGINE START/STOP button
without depressing the brake pedal.
•The transmission is in a position other than ( P.
•You press the shift lever release button.
While the engine is running, the vehicle will
automatically preconditi on inside the vehicle.
When it is warm outside:
•The climate control system is activated in auto
mode.
When it is cold outside:
•The defroster is activated at a moderately warm
temperature.
•The rear defogger and door mirror heaters are
activated.
•The seat heaters* and heated steering wheel* are
activated. 2 Heated Steering Wheel
* P. 236
2 Front Seat Heaters* P. 237
2 Front Seat Heaters and Seat Ventilation*
P. 238
Automatic transmission models
Continuously variable transmission models
* Not available on all models

Continued439
uuWhen Driving uAuto Idle Stop*
Driving
The vehicle stops with the shift position in (D and the brake pedal depressed.
When you shift into
(P quickly with depressing the brake pedal, the Auto Idle Stop
continues to operate, even if the brake pedal is released. u If you move the shift lever slowly, the engine may automatically restarts.
■Auto Idle Stop does not activate when:
• The Auto Idle Stop OFF button is pressed.
• The driver’s seat belt is not fastened.
• The engine coolant temperature is low or high.
• The engine is started with the hood open.
u Turn off the engine. Close the hood before you restart the engine to activate
Auto Idle Stop.
• The battery charge is low.
• The internal temperature of the battery is 41°F (5°C) or less.
• The transmission fluid temperature is low or high.
• The transmission is in a position other than
(D.
• The vehicle comes to a stop again before the vehicle speed reaches 3 mph (5 km/h)
after the engine starts.
• Stopped on a steep incline.
• is on (indicator on).
• The climate control system is in use, and the temperature is set to Hi or Lo .
• The climate control system is in use, and the outside temperature is below -4°F
(-20°C) or over 104°F (40°C).
■Auto Idle Stop Activates When:1 Auto Idle Stop Activates When:
Do not open the hood while the Auto Idle Stop
function is activated.
If the hood is opened, the engine will not restart
automatically.
In this case, restart the engine with the ENGINE
START/STOP button.
2 Starting the Engine P. 414
When ACC with Low Speed Follow is in operation,
the vehicle stops without de pressing the brake pedal
and Auto Idle Stop may activate.
In such cases, the engine may restart if you change
the shift position other than
( D.
Pressing the ENGINE START/STOP button causes
the engine to no longer restar ts automatically. Follow
the standard procedure to start the engine.
2 Starting the Engine P. 414