2021 HONDA RIDGELINE fuel

uuWhen Driving uStarting the Engine
386
Driving
1Starting the Engine
The immobilizer system pr otects your vehicle from
theft.
If an improperly c oded device is used, the engine’s
fuel system is disabled. 2 Immobilizer System P. 136

Continued397
uuWhen Driving uShifting
Driving
■Shift Operation1Shift Operation
NOTICE
When you change (D to (R and vice versa, depress
the brake pedal to come to a complete stop, then
select the intended shift position while maintaining
brake pressure.
Use the shift position indi cator and the shift button
indicator to check the shift position before selecting a
shift button.
If the indicator of the currently selected shift position,
or all the shift position indicators are blinking
simultaneously, there is a problem with the
transmission.
Avoid sudden acceleration and have the transmission
checked by a dealer as soon as possible.
The fuel supply may be cut of f if you drive at engine
speeds in or over the tac hometer’s red zone (engine
speed limit). If this happe ns, you may experience a
slight jolt.
When the engine speed is increased while the
transmission is in
( N, (P or (R, the fuel supply may
be cut off even without the engine speed entering
the tachometer’s red zone.
When shifting positions in extremely low
temperatures (-22°F/-30°C), there may be a short
delay before the shift posit ion is indicated in the
display. Always confirm y ou are in the correct shift
position before driving.
Shift Position Indicator
(Transmission System Indicator) Tachometer’s Red Zone
Press the
(P button.
Pull back the ( R button.
Press the
( N button.
Press the button.
Each time you press the button,
the mode switches between Drive
and S Position mode.
D/S
Shift Button
Indicator M
(sequential mode) Indicator
Sequential Mode Gear Selection
Indicator

403
uuWhen Driving uECON Mode
Driving
ECON Mode
The ECON button turns the ECON mode on
and off.
The ECON mode helps you improve your fuel
economy by adjusting the performance of the
engine and climate control system.1 ECON Mode
While in ECON mode, the climate control system has
greater temperature fluctuation.
If the Snow , Mud
* or Sand* mode is turned ON
while the ECON mode is ON , the ECON mode will be
turned off.
* Not available on all models

406
uuWhen Driving uAuto Idle Stop
Driving
Auto Idle Stop
To help maximize fuel econ omy, the engine automatica lly stops when the vehicle
comes to a stop, depending on environmen tal and vehicle operating conditions. The
indicator (green) comes on at this time.
The environmental and vehicle conditions that
impact Auto Idle Stop system operation are
varied.
2Auto Idle Stop Activates When: P. 408,
409
The engine then restarts once the vehicle is
about to move again, and the indicator
(green) goes off.
2 The Engine Automatically Restarts When:
P. 410
If the driver’s door is opened while the
indicator (green) comes on, a buzzer sounds
to notify you that the Auto Idle Stop function
is in operation.
A message associated with Auto Idle Stop
appears on the multi-information display.
2 Indicators P. 78
2 Customized Features P. 298
1Auto Idle Stop
The 12-volt battery insta lled in this vehicle is
specifically designed for a m odel with Auto Idle Stop.
Using a 12-volt battery other than this specified type
may shorten the 12-volt ba ttery life, and prevent
Auto Idle Stop from activati ng. If you need to replace
the 12-volt battery, make sure to select the specified
type. Ask a dealer for more details.
The duration of the Au to Idle Stop operation:
•Increase in the ECON mode, compared to when the
ECON mode is off, with climate control in use.
2 ECON Mode P. 403

418
uuWhen Driving uTire Pressure Monitoring System (TPMS) - Required Federal Explanation
Driving
Tire Pressure Monitoring System (TPMS) - Required
Federal Explanation
Each tire, including the spare (i f provided), should be checked
monthly when cold and inflated to the inflation pressure
recommended by the vehicle manufacturer on the vehicle placard
or tire inflation pressure label.
(If your vehicle has tires of a different size than the size indicated
on the vehicle placard or tire infl ation pressure label, you should
determine the proper tire inflat ion pressure for those tires.)
As an added safety feature, your vehicle has been equipped with
a tire pressure monitoring system (TPMS) that illuminates a low
tire pressure telltale
when one or more of your tire s is significantly under-inflated.
Accordingly, when the low tire pr essure telltale illuminates, you
should stop and check your tires as soon as possible, and inflate
them to the proper pressure.
Driving on a significantly under-in flated tire causes the tire to
overheat and can lead to tire failure. Under-inflat ion also reduces
fuel efficiency and tire tread li fe, and may affect the vehicle’s
handling and stopping ability.

483
Driving
Refueling
Fuel Information
■Fuel recommendation
Use of a lower octane gasoline can cause a persistent, heavy metallic knocking noise
that can lead to engine damage.
■Top tier detergent gasoline
Because the level of detergency and additive s in gasoline vary in the market, Honda
endorses the use of “TOP TIER Detergent Gasoline” where available to help
maintain the performance and reliability of your vehicle. TOP TIER Detergent
Gasoline meets a new gasoline standard jointly established by leading automotive
manufacturers to meet the needs of today’s advanced engines.
Qualifying gasoline retailers will, in most cases, identify their gasoline as having met
“TOP TIER Detergent Gasoline” standards at the retail location. This fuel is
guaranteed to contain the proper level of de tergent additives and be free of metallic
additives. The proper level of detergent additives, and absence of harmful metallic
additives in gasoline, help avoid build-up of deposits in your engine and emission
control system.
For further important fuel-related informati on for your vehicle, or on information on
gasoline that does not contain MMT, vi sit www.hondacars.com. In Canada, visit
www.honda.ca for additional information on gasoline. For more information on top
tier gasoline, visit www.toptiergas.com .
■Fuel tank capacity: 19.5 US gal (73.8 L)
Unleaded gasoline, pump octane number 87 or higher
1Fuel Information
NOTICE
We recommend quality ga soline containing
detergent additives that help prevent fuel system and
engine deposits. In addition, in order to maintain
good performance, fuel economy, and emissions
control, we strongly reco mmend the use of gasoline
that does NOT contain harmful manganese-based
fuel additives such as MMT, if such gasoline is
available.
Use of gasoline with these additives may adversely
affect performance, a nd cause the malfunction
indicator lamp on your inst rument panel to come on.
If this happens, contact a dealer for service. Some
gasoline today is blended with oxygenates such as
ethanol. Your vehicle is designed to operate on
oxygenated gasoline containing up to 15% ethanol
by volume. Do not use ga soline containing methanol.
If you notice any undesira ble operating symptoms, try
another service station or sw itch to another brand of
gasoline.

484
uuRefueling uHow to Refuel
Driving
How to Refuel
Your fuel tank is not equipped with a fuel filler cap. You can insert the filler nozzle
directly into the filler neck. The tank seal s itself again when you pull out the filler
nozzle.
1.Stop your vehicle with the service station
pump on the left side of the vehicle in the
rear.
2. Turn off the engine.
3. Press the fuel fill door release button.
u The fuel fill door opens.1How to Refuel
The fuel filler opening is designed to accept only
service station filler nozzles for refueling. Use of
smaller diamet er tubes (e.g., those used to siphon
fuel for other uses) or other non-service station
devices can damage the area in and around the filler
opening.
The filler nozzle automatically stops to leave space in
the fuel tank so that fuel does not overflow as a result
of changes in air temperature.
Do not continue to add fuel after the filler nozzle has
automatically stopped. Addi tional fuel can exceed
the full tank capacity.
3WARNING
Gasoline is highly flammable and explosive.
You can be burned or seriously injured
when handling fuel.
• Stop the engine, and keep heat, sparks,
and flame away.
• Handle fuel only outdoors.
• Wipe up spills immediately.
Press

485
uuRefueling uHow to Refuel
Driving
4. Place the end of the filler nozzle on the
lower part of filler opening, then insert it
slowly and fully.
u Make sure that the end of the filler
nozzle goes down along with the filler
pipe.
u Keep the filler nozzle level.
u When the tank is full, the filler nozzle will
click off automatically.
u If you do not fill up the tank to full,
always add a minimum of 3.5 US gal
(13.3 L) of fuel.
u After filling, wait about five seconds
before removing the filler nozzle.
5. Shut the fuel fill door by hand.1How to Refuel
If the filler nozzle keeps tu rning off when the tank is
not full, there may be a pr oblem with the pump’s fuel
vapor recovery system. Try fi lling at another pump. If
this does not fix the problem, consult a dealer.
If you repeatedly fill the tank with less than the
specified minimum amount of fuel, the malfunction
indicator lamp may come on. If this happens, have
your vehicle checked by a dealer.
If you have to refuel y our vehicle from a portable
container, use the funnel pr ovided with your vehicle.
2 Refueling From a Portable Fuel Container
P. 571