2023 HONDA CRV check engine

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

622
uuMaintenance Under the Hood uRefilling Window Washer Fluid
Maintenance
Refilling Window Washer Fluid
Check the amount of window washer fluid.
If the level is low, fill the washer reservoir.
If the washer fluid is low, a message appears
on the driver information interface.
Pour the washer fluid carefully. Do not overflow the reservoir.1 Refilling Window Washer Fluid
NOTICE
Do not use engine antifreeze or a vinegar/water
solution in the windshield washer reservoir.
Antifreeze can damage y our vehicle's paint. A
vinegar/water solution ca n damage the windshield
washer pump.
Use only commercially avai lable windshield washer
fluid.
Avoid prolonged use of hard water to prevent lime
scale buildup.Canadian models

649
Maintenance
Accessories and Modifications
Accessories
When installing accessories, check the following:
• Do not install accessories on the windsh ield. They can obstruct your view and
delay your reaction to driving conditions.
• Do not install any accessories over areas marked SRS Airbag, on the sides or backs
of the front seats, on the sides of the rear seats, on front or side pillars, or near
the side windows.
Accessories installed in these areas may interfere with proper operation of the
vehicle’s airbags or may be propelled into you or another occupant if the airbags
deploy.
• Be sure electronic accessories do not overload electrical circuits or interfere with
proper operation of your vehicle.
2 Fuses P. 683
•Before installing any electro nic accessory, have the installer contact a dealer for
assistance. If possible, have a deal er inspect the final installation.
1Accessories and Modifications
Honda Genuine accessor ies are recommended to
ensure proper operati on on your vehicle.
3WARNING
Improper accessories or modifications can
affect your vehicle's handling, stability, and
performance, and cause a crash in which
you can be seriously hurt or killed.
Follow all instruction s in this owner's
manual regarding accessories and
modifications.
3WARNING
Use of improperly designed, engineered or
manufactured high-voltage battery
assemblies could cause a fire in your
vehicle.
A vehicle fire could result in a crash or
injury.
Only use a genuine Honda high-voltage
battery assembly, or it s equivalent, in your
vehicle.

651
Handling the Unexpected
This chapter explains how to handle unexpected troubles.
ToolsTypes of Tools .................................. 652
If a Tire Goes Flat
Temporarily Repairi ng a Flat Tire....... 653
Handling of the Jack ......................... 666
Power System Won’t Start Checking the Procedure ................... 667
If the Keyless Remote Battery is Weak ... 668Emergency Power System On ........... 669
Emergency Power System Off........... 670
If the 12-Volt Battery Is Dead .......... 671
Shift Lever Does Not Move .............. 673
Overheating How to Handle Overheating ............. 674 Indicator, Coming On/Blinking
If the Engine oil pressure low Warning Appears ......................................... 676
If the 12-Volt Battery Charging System Indicator Comes On ....................... 677
If the Limited stopping power Warning
Appears ......................................... 677
If the Malfunction Indicator Lamp Comes On or Blinks ................................... 678
If the Brake System Indicator (Red) Comes On or Blinks ................................... 679
If the Brake System Indicator (Red) Comes On
or Blinks at the Same Time When the Brake
System Indicator (Amber) Comes On.... 680
If the Electric Power Steering (EPS) System
Indicator Comes On ....................... 681
If the Low Tire Pressure/TPMS Indicator Comes On or Blinks ....................... 682
Fuses Fuse Locations ................................. 683
Inspecting and Changing Fuses ........ 687
Emergency Towing ........................... 689
If You Cannot Unlock the Fuel Fill Door... 690If You Cannot Open the Tailgate.......... 691Refueling................................................. 692
U.S. models

Continued659
uuIf a Tire Goes Flat uTemporarily Repairing a Flat Tire
Handling the Unexpected
5. Turn the selector knob to .
u Do not turn the air compressor on to
check the pressure.
2 Inflating an Under-inflated Tire P. 663
1Distributing the Sealant in the Tire
3WARNING
Running the engine with the vehicle in an
enclosed or even partly enclosed area can
cause a rapid buildup of toxic carbon
monoxide.
Breathing this colorless, odorless gas can
cause unconsciousness and even death.
Only run the engine to power the air
compressor with th e vehicle outdoors.
Console Panel
Cargo Area
AIR
Side

671Continued
Handling the Unexpected
If the 12-Volt Battery Is Dead
Jump Starting Procedure
Turn off the power to electric devices, such as audio and lights. Turn off the power
system, then open the hood. 1.Open the terminal cover on your vehicle’s
12-volt battery positive + terminal.
2. Connect the first jumper cable to your
vehicle's 12-volt battery + terminal.
3. Connect the other end of the first jumper
cable to the booster battery + terminal.
u Use a 12-volt booster battery only.
u
When using an automotive battery charger
to boost your 12-volt battery, select a
lower charging voltage than 15-volt. Check
the charger manual for the proper setting.
4. Connect the second jumper cable to the
booster battery - terminal.
5. Connect the other end of the second
jumper cable to the engine mounting bolt
as shown. Do not connect this jumper cable
to any other part.
6. If your vehicle is connected to another
vehicle, start the assisting vehicle's engine
and increase its rpm slightly.
7. Attempt to start your ve hicle's engine. If it
turns over slowly, check that the jumper
cables have good metal-to-metal contact.
1 Jump Starting Procedure
Securely attach the jumper cables clips so that they
do not come off when the e ngine vibrates. Be careful
not to tangle the jumper cables or allow the cable
ends to touch each other while attaching or
detaching the jumper cables.
12-volt battery performa nce degrades in cold
conditions and may prevent the engine from starting.
The Vehicle Stability Assist
TM (VSA ®) system, brake
system (Amber), Adaptive Cruise Control (ACC) with
Low Speed Follow, low tire pressure/TPMS
* and
Safety Support indicators may come on along with a
message in the gauge when you set the power mode
to ON after reconnecting the 12-volt battery.
Drive a short distance at more than 12 mph (20 km/h).
Each indicator should go off. If any do not, have your
vehicle checked by a dealer.
3WARNING
A 12-volt battery can explode if you do not
follow the correct procedure, seriously
injuring anyone nearby.
Keep all sparks, open flames, and smoking
materials away from the 12-volt battery.
Booster Battery
* Not available on all models

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

676
Handling the Unexpected
Indicator, Coming On/Blinking
If the Engine oil pressure low Warning Appears
■Reasons for the warning to appear
Appears when the engine oil pressure is low.
■What to do as soon as the warning
appears
1. Immediately park the vehicle on level
ground in a safe place.
2. If necessary, turn the hazard warning lights
on.
■What to do after parking the vehicle
1. Turn the power system off and let it sit for
approximately three minutes.
2. Open the hood and check the oil level.
u Add oil as necessary.
2 Oil Check P. 614
3.Start the engine and check the Engine oil
pressure low warning.
u The warning disappears: Start driving
again.
u The warning does not disappear within
10 seconds: Immediately turn the power
system off and contact a dealer for
repairs.
1If the Engine oil pressure low Warning Appears
NOTICE
Running the engine with low oil pressure can cause
serious mechanical damage almost immediately.