engine HONDA RIDGELINE 2021 Owner's Manual (in English)

528
Maintenance
Climate Control System Maintenance
Air Conditioning
To ensure proper and safe operation, th e 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 conditioning 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 replace the dust a nd 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. 75
2 Specifications P. 574
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.

531
uuCleaning uExterior Care
Continued
Maintenance
Exterior Care
Dust off the vehicle body after you drive.
Regularly inspect your vehicle for scratches on painted surfaces. A scratch on a
painted surface can result in body rust. If you find a scratch, promptly repair it.
Wash the vehicle regularly. Wash more fr equently when driving in the following
conditions:
• If driving on roads with road salt.
• If driving in coastal areas.
• If tar, soot, bird droppings, insects, or tree sap are stuck to painted surfaces.
Use a water and mild detergent solution, and
a soft brush or cloth to clean the inside of the
trunk.
To drain water from the trunk, remove the
drain plug by turning it counter-clockwise. u When you are finished washing the
trunk, dry it with a soft cloth, and
reinstall the drain plug.
■Washing the Vehicle
■Washing the Trunk
1Washing the Vehicle
Do not spray water into the air intake vents. It can
cause a malfunction.
Do not spray water onto the capless unit when the
fuel fill door is open. It ca n cause damage to the fuel
system or engine.
Air Intake Vents
Drain plug

uuCleaning uExterior Care
532
Maintenance
• Make sure to follow the instructions indicated on the automated car wash.
• Fold in the door mirrors.
• For models equipped with automatic inte rmittent wipers, turn the wipers off.
• Keep sufficient distance between the cleaning nozzl e and the vehicle body.
• Take particular care around the windows. St anding too close may cause water to
enter the vehicle interior.
• Do not spray high pressure water directly into the engine compartment. Instead,
use low pressure water and a mild detergent.
A good coat of automotive body wax helps protect your vehicle’s paint from the
elements. Wax will wear off over time and expose your vehicle’s paint to the
elements, so reapply as necessary.
■Using an Automated Car Wash
■Using High Pressure Cleaners
■Applying Wax
1 Using an Automated Car Wash
When using an automated car wash that pulls the
vehicle through with a c onveyor, make sure the
transmission in
( N position.
2 If you want to keep the transmission in
(N
position [car wash mode] P. 399
1Applying Wax
NOTICE
Chemical solvents and st rong cleaners can damage
the paint, metal, and plasti c on your vehicle. Wipe
away spills immediately.

Continued533
uuCleaning uExterior Care
Maintenance
If you get gasoline, oil, engine coolant, or battery fluid on resi n coated parts, they
may be stained or the coating may peel. Prom ptly wipe it away using a soft cloth and
clean water.
Wipe using a glass cleaner.
Aluminum is susceptible to deterioration caused by salt and other road
contaminants. When necessary, as early as possible use a sponge and mild detergent
to wipe away these contaminants. Do no t use a stiff brush or harsh chemicals
(including some commercial wheel cleaners).
These can damage the protective finish on aluminum alloy wheels, resulting in
corrosion. Depending on the type of finish, the wheels also may lose their luster or
appear burnished. To avoid water stains, wi pe the wheels dry with a cloth while they
are still wet.
■Maintaining the Bumpers and Other Resin Coated Parts
■Cleaning the Window
■Maintaining Aluminum Wheels
1 Maintaining the Bumpers an d Other Resin Coated Parts
Ask a dealer about the corr ect coating material when
you want to repair the painted surface of the parts
made of resin.

537
Handling the Unexpected
This chapter explains how to handle unexpected troubles.
ToolsTypes of Tools .................................. 538
If a Tire Goes Flat Changing a Flat Tire ......................... 539
Engine Does Not Start
Checking the Engine ........................ 549
If the Smart Entry Remote Battery is Weak .......................................... 550
Emergency Engine Stop ................... 551
If the Battery Is Dead ....................... 552
Overheating How to Handle Overheating ............. 555 Indicator, Coming On/Blinking
If the Low Oil Pressure Indicator Comes
On ............................................. 557
If the Charging System Indicator Comes
On ................................................. 557
If the Malfunction Indicator Lamp Comes On or Blinks ................................... 558
If the Brake System I ndicator (Red) Comes
On .................................................559
If the Electric Power Steering (EPS) System
Indicator Comes On ....................... 559
If the Low Tire Pressure/TPMS Indicator Comes On or Blinks........................ 560 If the Transmission System Indicator Blinks
along with the Warning Message... 561
Fuses
Fuse Locations ................................. 562
Inspecting and Changing Fuses ........ 567
Emergency Towing ........................... 568
If You Cannot Unlock the Fuel Fill Door....569
If You Cannot Unlock the Tailgate ... 570
Refueling
Refueling From a Portable Fuel Container ................................... 571

Continued543
uuIf a Tire Goes Flat uChanging a Flat Tire
Handling the Unexpected
1. Place the jack under the jacking point
closest to the tire to be changed.
2. Turn the end bracket cl ockwise as shown in
the image until the top of the jack contacts
the jacking point.
u Make sure that the jacking point tab is
resting in the jack notch.
3. Raise the vehicle, using the jack handle bar
and the jack handle, until the tire is off the
ground.
■How to Set Up the Jack1How to Set Up the Jack
Do not use the jack with people or luggage in the
vehicle.
Use the jack provided in your vehicle.
Other jacks may not support the weight (“load”) or
may not fit the jacking point.
The following instructions must be followed to use
the jack safely:
•Do not use while the engine is running.
•Use only where the ground is firm and level.
•Use only at the jacking points.•Do not get in the vehicl e while using the jack.
•Do not put anything on top of or underneath the
jack.
3WARNING
The vehicle can easily roll off the jack,
seriously injuring anyone underneath.
Follow the directions for changing a tire
exactly, and never get under the vehicle
when it is supported by a jack.
Jacking Points
Jack Handle Bar
Wheel Nut Wrench as Jack Handle

549
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 multi-information display.
●If the To Start, Hold Remote Near Start Button message appears
2If the Smart Entry Remote Battery is Weak P. 550
uMake sure the smart entry remote is in its operating range.
2 ENGINE START/STOP Button Operating Range P. 145
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. 525●If the interior lights come on normally 2 Fuses P. 562
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. 385
Check the immobilize r system indicator.
When the immobilizer system indicator is blinking, the engine cannot be started.
2 Immobilizer System P. 136
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. 567
If the problem continues:
2Emergency Towing P. 568
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. 552

550
uuEngine Does Not Start uIf the Smart Entry Remote Battery is Weak
Handling the Unexpected
If the Smart Entry Remote Battery is Weak
If the beeper sounds, the To Start, Hold Remote Near Start Button message
appears on the multi-information display, and the ENGINE START/STOP button
flashes, and the engine won’t star t, start the engine as follows:
1.Touch the center of the ENGINE START/
STOP button with the H logo on the smart
entry remote while the ENGINE START/
STOP button is flashing. The buttons on
the smart entry remote should be facing
you.
u The ENGINE START/STOP button
flashes for about 30 seconds.
2. Depress the brake pedal and press the
ENGINE START/STOP button within 10
seconds after the beeper sounds and the
ENGINE START/STOP button changes
from flashing to on.
u If you don’t depress the pedal, the mode
will change to ACCESSORY.

551
uuEngine Does Not Start uEmergency Engine Stop
Handling the Unexpected
Emergency Engine Stop
The ENGINE START/STOP button may be used to stop the engine due to an
emergency situation even while driving. If you must stop the engine, do either of the
following operations:
• Press and hold the ENGINE START/STOP button for about two seconds.
• Firmly press the ENGINE START/STOP button three times.
The steering wheel will not lock. However, because turning off the engine disables
the power assist the engine provides to the steering and braking systems, it will
require significantly more physical effort an d time to steer and slow the vehicle. Use
both feet on the brake pedal to slow down the vehicle and stop immediately in a
safe place.
The transmission automa tically changes to
(P after the vehicle comes to a complete
stop.
Then, the power mode changes to VEHICLE OFF.
Then press the ENGINE START/STOP button twice without depressing the brake
pedal to change the mode to VEHICLE OFF.
1 Emergency Engine Stop
Do not press the ENGINE START/STOP button while
driving unless it is absolute ly necessary for the engine
to be turned off.
If you press the ENGINE START/STOP button while
driving, the beeper sounds.
U.S. models
Canadian models

552
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.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.
2. Connect the first jump er cable to your
vehicle’s 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.
■Jump Starting Procedure1If 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.
Pins
Engine Cover
Booster Battery