2021 HONDA ODYSSEY check engine

708
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 te rminals for corrosion
monthly.
To access the battery terminals:
1. Remove the engine compartment cover.
2 Engine Compartment Cover P. 677
2.Remove the clips using a Phillips-head
screwdriver, then remove the air intake
duct.
If your vehicle’s battery is disconnected or goes dead:
• The audio system is disabled.
2 Reactivating the audio system P. 280
•The clock resets.
2 Clock P. 154
•
The immobilizer system needs to be reset.
2 Immobilizer System Indicator P. 98
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.
Clip
Air Intake Duct
Canadian models only
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723
Handling the Unexpected
This chapter explains how to handle unexpected troubles.
ToolsTypes of Tools .................................. 724
If a Tire Goes Flat Changing a Flat Tire ......................... 725
Engine Does Not Start Checking the Engine ........................ 734
If the Remote Battery is Weak .......... 735
Emergency Engine Stop ................... 736
If the Battery Is Dead ....................... 737
Overheating How to Handle Overheating ............. 739
Indicator, Coming On/Blinking
If the Low Oil Pressure Symbol Appears... 741
If the Charging System Indicator Comes
On ................................................. 742
If the Malfunction Indicator Lamp Comes On or Blinks ................................... 742
If the Brake System Indicator (Red) Comes
On or Blinks ................................... 743
If the Brake System Indicator (Red) Comes On or Blinks at the Same Time When the Brake
System Indicator (Amber) Comes On ..... 744
If the Electric Power Steering (EPS) System Indicator Comes On ....................... 745
If the Low Tire Pressure/TPMS Indicator Comes On or Blinks........................ 745 If the Transmission System Indicator Blinks
along with the Warning Message... 746
Fuses Fuse Locations ................................. 747
Inspecting and Changing Fuses ........ 753
Emergency Towing ........................... 754
If You Cannot Unlock the Fuel Fill Door ... 755
If You Cannot Open the Tailgate .... 756
When You Cannot Close the Power Sliding Doors*................................. 758
Refueling
Refueling From a Portable Fuel Container .... 759
* Not available on all models
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734
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 dr iver information interface.
• If the To Start, Hold Remote Near Start Button message appears
2If the Remote Battery is Weak P. 735
uMake sure the remote is in its operating range.
2 ENGINE START/STOP Button Operating Range P. 198
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
2 Battery P. 708
•If the interior lights come on normally 2 Fuses P. 747
The starter turns over normally
but the engine doesn’t start.
There may be a problem with the
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. 552
Check the immobilizer system indicator.
When the immobilizer system indicator is blinking, the engine cannot be started.
2Immobilizer System P. 191
Check the fuel level.
There should be enough fuel in the tank.
2 Fuel Gauge P. 127
Check the fuses.
Check all fuses, or have the vehicle checked by a dealer.
2Inspecting and Changing Fuses P. 753
If the problem continues:
2Emergency Towing P. 754
1Checking the Engine
If you must start the vehi cle immediately, use an
assisting vehicle or booster battery to jump start it.
2 If the Battery Is Dead P. 737
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737Continued
Handling the Unexpected
If the Battery Is Dead
Turn off the power to electric devices, such as audio and lights. Turn off the engine,
then open the hood. 1.Connect the first jumper cable to your
vehicle’s battery + terminal.
2. 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.
3. Connect the second jumper cable to the
booster battery - terminal.
4. 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.
5. If your vehicle is connected to another
vehicle, start the assisting vehicle’s engine
and increase its rpm slightly.
6. Attempt to start your ve hicle’s engine. If it
turns over slowly, check that the jumper
cables have good metal-to-metal contact.
■Jump Starting Procedure1 If the Battery Is Dead
Securely attach the jumper cables clips so that they
do not come off when the e ngine vibrates. Also be
careful not to tangle the ju mper cables or allow the
cable ends to touch each other while attaching or
detaching the jumper cables.
Battery performance degrades in cold conditions and
may prevent the engi ne from starting.
3WARNING
A 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 battery.
Booster Battery
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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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741
Handling the Unexpected
Indicator, Coming On/Blinking
If the Low Oil Pressure Symbol Appears
■Reasons for the symbol to appear
Appears when the engine oil pressure is low.
■What to do as soon as the symbol
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. Stop the engine and let it sit for
approximately three minutes.
2. Open the hood and ch eck the oil level.
u Add oil as necessary.
2 Oil Check P. 679
3.Start the engine and check the low oil
pressure symbol.
u The symbol disappears: Start driving
again.
u The symbol does not disappear within 10
seconds: Immediately stop the engine
and contact a dealer for repairs.
1If the Low Oil Pressure Symbol Appears
NOTICE
Running the engine with low oil pressure can cause
serious mechanical damage almost immediately.
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743
uuIndicator, Comi ng On/BlinkinguIf the Brake System Indicator (Red) Comes On or Blinks
Handling the Unexpected
If the Brake System Indicator (Red) Comes On or
Blinks
■Reasons for the indicator to come on
• The brake fluid is low.
• There is a malfunction in the brake system.
■What to do when the indicator comes on while driving
Depress the brake pedal lightly to check pedal pressure.
• If normal, check the brake fluid level the next time you stop.
• If abnormal, take immediate acti on. If necessary, downshift the
transmission to slow the vehicle using engine braking.
■Reasons for the indicator to blink
• There is a problem with the electric parking brake system.
■What to do when the indicator blinks
• Avoid using the parking brake and have your vehicle checked by a
dealer immediately.
1If the Brake System Indicator (Red) Comes On or Blinks
Have your vehicle re paired immediately.
It is dangerous to drive with low brake fluid. If there
is no resistance from the brake pedal, stop
immediately in a safe plac e. If necessary downshift
the gears.
If the brake system indicator (red) and ABS indicator
come on simultaneously , the electronic brake
distribution system is not wo rking. This can result in
vehicle instability under sudden braking.
Have your vehicle inspecte d by a dealer immediately.
If the brake system indicator (red) blinks at the same
time when the brake system indicator (amber) comes
on, the parking br ake may not work.
Avoid using the parking brak e and have your vehicle
checked by a dealer immediately.
2 If the Brake System Indicator (Red) Comes
On or Blinks at the Same Time When the
Brake System Indicator (Amber) Comes On
P. 744
U.S.
Canada
(Red)
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746
uu Indicator, Coming On/Blinking uIf the Transmission System Indicator Blinks along with the Warning Message
Handling the Unexpected
If the Transmission System Indicator Blinks along
with the Warning Message
■Reasons for the indicator to blink
The transmission is malfunctioning.
■What to do when the indicator blinks
• Immediately have your vehicle inspected by
a dealer.
• Change the gear position to
(N after
starting the engine.
u Check if the
(N position in the
instrument panel and the indicator on
the
(N button light/blink.
2 Starting the Engine P. 552
1If the Transmission System In dicator Blinks along with the
Warning Message
You may not be able to turn on the engine.
Make sure to set the parking brake when parking
your vehicle.
Call a professional towing service if you need to tow
your vehicle. 2 Emergency Towing P. 754
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