2023 HONDA CRV cooling

Continued233
uuClimate Control System uUsing Automatic Climate Control
Controls
■Switching between the recirculation and fresh air modes
Press the (recirculation) button a nd switch the mode depending on
environmental conditions.
Recirculation mode (indicator on): Recirculates air from the vehicle’s interior through
the system.
Fresh air mode (indicator off): Maintains outside ventilation. Keep the system in
fresh air mode in normal situations.1 Using Automatic Climate Control
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.

599
Maintenance
This chapter discusses basic maintenance.
Before Performing MaintenanceInspection and Maintenance ............ 600
Safety When Performing Maintenance ....601Parts and Fluids Used in Maintenance Service ........................................... 602
Maintenance Minder
TM..................... 603
Maintenance Under the Hood Maintenance Items Under the Hood .... 611
Opening the Hood ........................... 612
Recommended Engine Oil ................ 613
Oil Check ......................................... 614
Adding Engine Oil ............................ 615
Changing the Engine Oil and Oil Filter ...616
Cooling System ................................ 618
Transmission Fluid ............................ 620
Brake Fluid ....................................... 621
Refilling Window Wa sher Fluid......... 622
Replacing Light Bulbs ....................... 623
Checking and Maintaining Wiper
Blades .......................................... 627
Checking and Maintaining Tires
Checking Tires ................................. 631
Tire and Loading Information Label ... 632
Tire Labeling .................................... 632
DOT Tire Quality Grading (U.S. Vehicles) .... 634Wear Indicators................................ 636 Tire Service Life ................................ 636
Tire and Wheel Replacement ........... 637
Tire Rotation .................................... 638
Winter Tires ..................................... 639
12-Volt Battery ................................. 640
Remote Transmitter Care
Replacing the Remote Battery .......... 642
Climate Control System Maintenance .... 643Cleaning
Interior Care .................................... 644
Exterior Care.................................... 646
Accessories and Modifications .......... 649

618
uuMaintenance Under the Hood uCooling System
Maintenance
Cooling System
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
1Cooling System
NOTICE
Genuine Honda engine coolant 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 antifreeze/coolant as soon as possible.
Do not add rust inhibitors or other additives to your
vehicle's cooling system. They 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.
MAXReserve Tank
MIN

619
uuMaintenance Under the Hood uCooling System
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. Push down and 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.
■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

643
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 Climate Control System Maintenance
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. 93
2 Specifications P. 694
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.

675
uuOverheating uHow to Handle Overheating
Handling the Unexpected
■Next thing to do
1.Check that the cooling fan is operating and
turn the power system off once the Engine
temperature too hot. Do not drive.
Allow engine to cool. message on the
driver information interface disappears.
u If the cooling fan is not operating,
immediately turn the power system off.
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 suffici ently, turn the power system on.
If the Engine temperature too hot. Do no t drive. Allow engine to cool.
message does not appear, resume driving. If it appears again, 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

712
Index
Heating and Cooling SystemDust and Pollen Filter ............................... 643
HFL (HandsFreeLink ®)....................... 400, 420
High Beam Indicator ................................. 106
High Voltage Battery ................................ 491
Hill Descent Control System ..................... 474
Hill Descent Control System Indicator ..... 108
Hill Start Assist System .............................. 460
Honda App License Agreement ............... 349
Honda Sensing ®................................ 35, 492
HondaLink ®............................................. 320
HondaLink ® Assist ..................................... 437
Hybrid Vehicle SPORT HYBRID i-MMD (int elligent Multi-Mode
Drive) ....................................................... 13
I
Identification Numbers ............................ 696
Engine, Motor and Transmission .............. 696
Vehicle Identification ............................... 696
If the 12-Volt Battery Is Dead .................. 671
Immobilizer System .................................. 176
Indicator .................................................. 107
Indicators ..................................................... 96
12-Volt Battery Charging System ..... 101, 677
Adaptive Cruise Control (ACC) with Low
Speed Follow (Amber) ............................ 109
Adaptive Cruise Control (ACC) with Low Speed Follow (White/Green)........... 109, 514
Anti-lock Brake System (ABS) ................... 103 Auto High-Beam ..................................... 106
Automatic Brake Hold ..................... 101, 577
Automatic Brake Hold System ......... 101, 577
Cruise Mode (White/Green) ..................... 109
Deceleration Paddle Selector ................... 102
ECON Mode .................................... 108, 470
Electric Power Steering (EPS)
System .......................................... 104, 681
EV ........................................................... 100
High Beam .............................................. 106
Hill Descent Control System (White/Green)........................................ 108
Immobilizer System ................................. 107
Lane Keeping Assist System (LKAS)
(Amber) ................................................. 110
Lane Keeping Assist System (LKAS) (White/Green)........................................ 110
Lights On ................................................ 106
Low Fuel (Amber) .................................... 103
Low Tire Pressure/TPMS ... 105, 480, 485, 682
Malfunction Indicator Lamp............. 101, 678
NORMAL Mode ............................... 108, 470
Parking Brake a nd Brake System
(Amber) ......................................... 100, 680
Parking Brake a nd Brake System
(Red) ................................. 98, 99, 679, 680
POWER SYSTEM ...................................... 100
READY .................................................... 100
Safety Support (Amber) ........................... 111
Safety Support (Green/Gray) .................... 113
Seat Belt Reminder ............................ 51, 103 Security System Alarm............................. 107
Shift Position................................... 102, 465
SNOW Mode .................................. 108, 470
SPORT Mode................................... 108, 470
Supplemental Restraint System ......... 75, 104
System Message ..................................... 108
Transmission System ............................... 102
Turn Signal and Hazard Warning ............. 106
Vehicle Stability Assist
TM (VSA
®)
OFF ............................................... 105, 477
Vehicle Stability Assist
TM (VSA ®)
System .......................................... 104, 476
Information .............................................. 693
Instant Fuel Economy .............................. 122
Instrument Panel ........................................ 95
Interior Lights ........................................... 216
Interior Rearview Mirror ......................... 203
iPod ................................................... 251, 311
J
Jump Starting ........................................... 671