2021 HONDA PILOT check engine

uuMaintenance Under the Hood uChanging the Engine Oil and Oil Filter
644
Maintenance
4. Remove the oil filter and dispose of the
remaining oil.
5. Check that the filter ga sket is not stuck to
the engine contact surface.
u If it is stuck, you must detach it.
6. Wipe away dirt and dust adhering to the
contact surface of the oil filter base, and
install a new oil filter.
u Apply a light coat of new engine oil to
the oil filter rubber seal.
7. Put a new washer on the drain bolt, then
reinstall the drain bolt.
u Tightening torque:
29 lbf∙ft (39 N∙m, 4.0 kgf∙m)
8. Pour the recommended engine oil into the
engine.
u Engine oil change capacity (including
filter):
5.7 US qt (5.4 ℓ)
9. Reinstall the engine oi l fill cap securely and
start the engine.
10. Run the engine for a few minutes, and
then check that there is no leak from the
drain bolt or oil filter.
11. Stop the engine, wait for three minutes,
and then check the oil level on the
dipstick.
u If necessary, add more engine oil.1Changing the Engine Oil and Oil Filter
You will need a special wrench to replace the oil
filter. You can buy this wrench from a dealer.
When installing the new oil filter, follow the
instructions supplied with the oil filter.
Reinstall the engine oil fill cap. Start the engine. The
low oil pressure indicator should go off within five
seconds. If it does not, turn off the engine, and check
your work.
Oil Filter
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645
uuMaintenance 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. Remove the engine compartment cover.
2 Engine Compartment Cover P. 639
3.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.
4. Inspect the cooling system for leaks.
Specified coolant: Ho nda Long Life Antifreeze/Coolant Type 2
■Reserve Tank
1Engine Coolant
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. 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.
MAX
MIN
Reserve Tank
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648
uuMaintenance Under the Hood uBrake Fluid
Maintenance
Brake Fluid
The fluid level should be between the MIN
and MAX marks on the side of the reserve
tank.
Refilling Window Washer Fluid
Open the cap and 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.
Specified fluid: Honda Heavy Duty Brake Fluid DOT 3
■Checking the Brake Fluid
1Brake Fluid
NOTICE
Brake fluid marked DOT 5 is not compatible with your
vehicle’s braking system and can cause extensive
damage.
If the specified br ake fluid is not av ailable, you should
use only DOT 3 or DOT 4 fluid from a sealed
container as a temporary replacement.
Using any non-Honda brake fluid can cause corrosion
and decrease the longevity of the system. Have the
brake system flushed and re filled with Honda Heavy
Duty Brake Fluid DOT 3 as soon as possible.
If the brake fluid level is at or below the MIN mark,
have a dealer inspect the vehicle for leaks or worn
brake pads as soon as possible.
Brake Reservoir
MIN
MAX
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 build up.
Models without washer level sensor
Models with washer level sensor
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667
Maintenance
Battery
Checking the Battery
The condition of the battery is monitored by a
sensor located on the negative terminal of the
battery. If there is a problem with this sensor,
the driver information interface will display a
warning message. If this happens, have your
vehicle inspected by a dealer.
Check the battery termina ls for corrosion monthly.
To access the battery terminals:
1. Remove the engine compartment cover.
2 Engine Compartment Cover P. 639
2.Remove the clips using a Ph illips-head screwdriver, then remove the air intake
duct.
2 High Beam Headlights P. 649
If your vehicle’s battery is disconnected or goes dead:
•The audio system is disabled.
2 Audio System Theft Protection P. 243
•The clock resets*.
2 Clock P. 136
1Battery
WARNING: Battery post, terminals,
and related accessories contain lead
and lead compounds.
Wash your hands after handling.
When you find corrosion, cl ean the battery terminals
by applying a baking powder and water solution.
Clean the terminals with a damp towel. Cloth/towel
dry the battery. Coat the terminals with grease to
help prevent future corrosion.
When replacing the battery, the replacement must be
of the same specifications.
Consult a dealer for more information.
3WARNING
The battery gives off explosive hydrogen
gas during normal operation.
A spark or flame can cause the battery to
explode with enough force to kill or
seriously hurt you.
When conducting any battery
maintenance, wear prot ective clothing and
a face shield, or have a skilled technician do
it.
* Not available on all models
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681
Handling the Unexpected
This chapter explains how to handle unexpected troubles.
ToolsTypes of Tools .................................. 682
If a Tire Goes Flat Changing a Flat Tire ......................... 683
Engine Does Not Start Checking the Engine ........................ 691
If the Smart Entry Remote Battery is Weak .......................................... 692
Emergency Engine Stop ................... 693
Jump Starting .................................... 694
Overheating How to Handle Overheating ............. 697 Indicator, Coming On/Blinking
If the Low Oil Pressure Warning Appears ... 699If the Charging System Indicator Comes
On ................................................. 699
If the Malfunction Indicator Lamp Comes On or Blinks ................................... 700
If the Brake System Indicator (Red) Comes
On ................................................. 701
If the Electric Power Steering (EPS) System Indicator Comes On ....................... 701
If the Low Tire Pressure/Tire Pressure Monitoring System (TPMS) Indicator
Comes On or Blinks........................ 702
If the Transmission System Indicator Blinks
along with the Warning Message ....... 702
Fuses Fuse Locations ................................. 703
Inspecting and Changing Fuses ........ 707
Emergency Towing ........................... 708
When You Cannot Unlock the Fuel Fill Door ................................................. 709
Refueling
Refueling From a Portable Fuel Container ................................... 710
When You Cannot Open the Tailgate .. 711
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691
Handling the Unexpected
Engine Does Not Start
Checking the Engine
If the engine does not start, check the starter.
Starter conditionChecklist
Starter doesn’t turn or turns
over slowly.
The battery may be dead. Check
each of the items on the right and
respond accordingly.Check for a message on the driver information interface.
●If the To Start, Hold Remote Near Start Button message appears
2If the Smart Entry Remote Battery is Weak P. 692
uMake sure the smart entry remote is in its operating range.
2 ENGINE START/STOP Button Operating Range P. 171
Check the brightness of the interior lights.
Turn on the interior lights and check the brightness.
●If the interior lights are dim or do not come on at all
2Battery P. 667●If the interior lights come on normally 2 Fuses P. 703
The starter turns over normally
but the engine doesn’t start.
There may be a problem with a
fuse. Check each of the items on
the right and respond accordingly. Review the engine start procedure.
Follow its instructions, and try
to start the engine again.
2 Starting the Engine P. 524
Check the immobilize r system indicator.
When the immobilizer system indicator is blinking, the engine cannot be started.
2 Immobilizer System P. 163
Check the fuel level.
There should be enough fuel in the tank.
2 Fuel Gauge P. 110
Check the fuses.
Check all fuses, or have the vehicle checked by a dealer.
2 Inspecting and Changing Fuses P. 707
If the problem continues:
2Emergency Towing P. 708
1Checking the Engine
If you must start the vehi cle immediately, use an
assisting vehicle or booster battery to jump start it.
2 Jump Starting P. 694
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695
uuJump Starting u
Continued
Handling the Unexpected
3.Pull up on the engine cover, remove it from
the pins.
u Start on the passenger side and lift the
outermost edge of the cover.
u Move towards the driver side while
applying uniform upward pressure.
4. Connect the first jumper cable to your
vehicle’s battery + terminal.
5. 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.
6. Connect the second jumper cable to the
booster battery - terminal.
7. Connect the other end of the second
jumper cable to the engine hanger as
shown. Do not connect this jumper cable to
any other part.
8. If your vehicle is connected to another
vehicle, start the assisting vehicle’s engine
and increase its rpm slightly.
9. Attempt to start your ve hicle’s engine. If it
turns over slowly, check that the jumper
cables have good metal-to-metal contact.
Pin
Engine Cover
Booster Battery
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uuOverheating uHow to Handle Overheating
698
Handling the Unexpected
■Next thing to do
1.Check that the cooling fan is operating and
stop the engine once the temperature
gauge needle 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 an d check the cooling
system components for leaks.
u If the coolant level in the reserve tank is
low, remove the engine compartment
cover then add coolant until it reaches
the MAX mark.
2Engine Compartment Cover P. 639
uIf 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.
■Last thing to do
Once the engine has cooled sufficiently, re start it and check the temperature gauge.
If the temperature gauge needle has gone do wn, 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.
Reserve Tank
MAXMIN
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