2023 HONDA ACCORD cooling

199Continued
Controls
Climate Control System
Using Automatic Climate Control
The automatic climate control system maintains the interior temperature you select.
The system also selects the proper mix of heat ed or cooled air that raises or lowers
the interior temperature to your pr eference as quickly as possible.
Use the system when the engine is running.
1. Press the AUTO button.
2. Adjust the interior temperature using the dr iver’s side or passenger’s side control
dial.
3. Press the (ON/OFF) button to cancel.1Using Automatic Climate Control
If any buttons are presse d while using the climate
control system in auto, the function of the button
that was pressed will take priority.
The auto button indicator
*/AUTO indicator* will go
off, but functions unrelated to the button that was
pressed will be cont rolled automatically.
During idle-stops, air-conditioning is suspended, and
only the blower remains active.
If you do not want air-cond itioning suspended, press
the Auto Idle Stop OFF button to cancel idle-stop.
To prevent cold air from bl owing in from outside, the
fan may not start i mmediately when the AUTO
button is pressed.
If the interior is very warm, you can cool it down
more rapidly by partial ly opening the windows,
turning the system on auto, and setting the
temperature to low. Change the fresh air mode to
recirculation mode until the temperature cools down.
When you set the temperat ure to the lower or upper
limit, Lo or Hi is displayed.
Pressing the button switches the climate
control system between on and off. When turned on,
the system returns to your last selection.
While ECON mode is active, the climate control
system may have reduced cooling performance.Models with SYNC button
Floor and
defroster
vents
Floor vents
Dashboard
and floor
vents
Dashboard
vents
AUTO Button
Driver’s Side
Temperature
Control Dial
(Recirculation)
Button
Fan Control Dial
A/C (Air Conditioning)
Button Passenger’s Side
Temperature
Control Dial
(ON/OFF) Button
* Not available on all models
23 ACCORD 4D US PET MAP-3130A6000_01.book 199 ページ ２０２２年１０月１９日　水曜日　午前１１時４９分

442
uuMaintenance Under the Hood uEngine Coolant
Maintenance
Engine Coolant
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 first. If it is completely empty, also check the coolant level in the
radiator. 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: Honda Long Life Antifreeze/Coolant Type 2
■Reserve Tank
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 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 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 antifreeze/coolant 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 radiator 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 radiator cap.
Reserve Tank
MAX
MIN
23 ACCORD 4D US PET MAP-3130A6000_01.book 442 ページ ２０２２年１０月１９日　水曜日　午前１１時４９分

443
uuMaintenance Under the Hood uTransmission Fluid
Maintenance
1. Make sure the engine and radiator are
cool.
2. Turn the radiator cap 1/8th turn counter-
clockwise and relieve any pressure in the
cooling system.
3. 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.
Transmission Fluid
Have a dealer check the fluid level and replace if necessary.
Do not attempt to check or change the co ntinuously variable transmission fluid by
yourself.
■Radiator1 Radiator
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.Radiator Cap
■Continuously Variable Transmission (CVT) Fluid
Specified fluid: Honda HCF-2
1 Continuously 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.
23 ACCORD 4D US PET MAP-3130A6000_01.book 443 ページ ２０２２年１０月１９日　水曜日　午前１１時４９分

463
Maintenance
Climate Control System Maintenance
Air Conditioning
To ensure proper and safe operation, the Society of Automotive Engineers (SAE
J2845) recommends that the refrigerant system only be serviced by trained and
certified technicians.
Never repair or replace the air conditio ning evaporator (cooling coil) with one
removed from a used or salvaged vehicle.
New replacement mobile air conditioning evaporators must be certified (and
labeled) as meeting SAE Standard J2842.
Dust and Pollen Filter
The climate control system is equipped with a dust and pollen filter that collects
pollen, dust, and other debris in the air. The Maintenance MinderTM messages will let
you know when to replace the filter.
We recommend that you repl ace the dust and pollen filter sooner when using your
vehicle in areas with high concentrations of dust.
1 Air Conditioning
NOTICE
Vented refrigerant is harmful to the environment.
To avoid refrigerant from venting, never replace the
evaporator with one re moved from a used or
salvaged vehicle.
Refrigerant in your vehicle’ s air conditioning system is
flammable and can be igni ted during servicing if
proper procedures are not followed.
The air conditioner labe l is found under the hood:
2 Safety Labels P. 82
2 Specifications P. 508
Canadian models
Caution
Flammable
Refrigerant
Requires Registered
Technician to Service
Air Conditioning
System
: :
:
:
1
Dust and Pollen Filter
If the airflow from the climate control system
deteriorates noticeably, and the windows fog up
easily, the filter may need to be replaced. Please
contact a dealer for replacement.
23 ACCORD 4D US PET MAP-3130A6000_01.book 463 ページ ２０２２年１０月１９日　水曜日　午前１１時４９分

487
uuOverheating uHow to Handle Overheating
Handling the Unexpected
■Next thing to do
1.Check that the cooling fan is operating and
stop the engine once the temperature
gauge goes down.
u If the cooling fan is not operating,
immediately stop the engine.
2. Once the engine has cooled down, inspect
the coolant level and check the cooling
system components for leaks.
u If the coolant level in the reserve tank is
low, add coolant until it reaches the
MAX mark.
u If there is no coolant in the reserve tank,
check that the radiator is cool. Cover the
radiator cap with a heavy cloth and open
the cap. If necessary, add coolant up to
the base of the filler neck, 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 has gone down, resu me 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 radiator 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 radiator cap.
MAX
Reserve Tank
MIN
23 ACCORD 4D US PET MAP-3130A6000_01.book 487 ページ ２０２２年１０月１９日　水曜日　午前１１時４９分