2021 HONDA ODYSSEY cooling

116
uuIndicators uDriver Information Interface Wa rning and Information Messages
Instrument Panel
MessageConditionExplanation
•Appears when you press and hold (N button for
more than two seconds.• Disappears when you set the gear position to other
than
(N.
2 If you want to keep the transmission in (N
position [car wash mode] P. 564
•Appears if there is a problem with the cooling
system.•Drive slowly to prevent overheating and have your
vehicle checked by a deal er as soon as possible.
•Appears if there is a problem with the headlights.•Appears while driving - The headlights may not be
on. When conditions allow you to drive safety, have
your vehicle checked by a dealer as soon as possible.
•Appears if there is a problem with the parking sensor
system.
•Check if the area around the sensor(s) is covered with
mud, ice, snow, etc. If the indicator(s) stays on or the
beeper does not stop even after you clean the area,
have the system checked by a dealer.Models with parking sensor system
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263Continued
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 us ing the temperature control switch.
3. Press the button to cancel.
■Switching between the recirculation and fresh air modes
Press the button and switch the mode depending on environmental
conditions.
Recirculation Mode (indicator on): Recirculates air from th e vehicle’s interior through
the system.
Fresh Air Mode (indicator off): Maintains outside ventilation. Keep the system in
fresh air mode in normal situations.
Dual-zone climate control system
1 Using Automatic Climate Control
During idle-stops, air-conditioning is suspended, and
only the blower remains ac tive. If you do not want
air-conditioning suspended, press Auto Idle Stop OFF
button to cancel idle-stop.
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 indicator will go off, but functions
unrelated to the button th at was pressed will be
controlled automatically.
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.
Dashboard
vents
Dashboard
and floor
vents
Floor vents
Floor and
defroster
vents
AUTO Button
Temperature
Control Switch A/C
(Air Conditioning) Button
Fan Control
Switch
(Recirculation)
Button
(On/Off)
Button
SYNC
(Synchronized)
Button
(Windshield Defroster) Button
MODE Button
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Continued269
uuClimate Control System uUsing Automatic Climate Control
Controls
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
switch.
3. Press the button to cancel.
1Using Automatic Climate Control
Pressing the button switch es 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.
Mode Control Icon
(Air flows from
dashboard vents) Mode Control Icon
(Air flows from
floor vents)
Mode Control Icon
(Air flows from
floor and
windshield
defroster vents)
Fan Control Icon
Mode Control Icon (Air flows from
floor and dashboard vents)
A/C
(Air Conditioning)
Icon
(On/Off) Button
(Recirculation) Button
SYNC (Synchronized) Button
FRONT
CLIMATE
Button
Driver’s Side
Temperature
Control switch Fan Control Button
Passenger’s
Side
Temperature
Control
switchAUTO Button
(Windshield Defroster)
Button
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683
uu Maintenance 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 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: Ho nda 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
MIN
MAX
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uuMaintenance Under the Hood uEngine Coolant
684
Maintenance
1. Make sure the engine and radiator are
cool.
2. Remove the engine compartment cover.
2 Engine Compartment Cover P. 677
3.Turn the radiator cap 1/8 turn counter-
clockwise and relieve any pressure in the
cooling system.
4. Push down and turn the radiator cap
counter-clockwise to remove it.
5. The coolant level should be up to the base
of the filler neck. Add coolant if it is low.
6. Put the radiator cap back on, and tighten it
fully.
■Radiator1Radiator
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
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713
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. 86
2 Specifications P. 762
Canadian models
: Caution
: Flammable Refrigerant
: Requires Registered
Technician to Service
: Air Conditioning
System
1Dust 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.
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uuOverheating uHow to Handle Overheating
740
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, add coolant until it reaches the
MAX mark.
u If there is no coolan t 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.
2 Radiator P. 684
■Last thing to do
Once the engine has cooled sufficiently, re start it and check the temperature gauge.
If the temperature gauge pointer has gone down, 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 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
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