2021 HONDA RIDGELINE battery

Contents
Child Safety P. 59Exhaust Gas Hazard P. 74Safety Labels P. 75
Tailgate P. 131 Opening and Closing the Trunk P. 133
Moonroof* P. 143 Operating the Switches Around the Steering Wheel P. 145
Interior/Exterior Convenience Items P. 175Climate Control System P. 195
Audio System Basic Operation P. 211 Audio Error Messages P. 278
Customized Features P. 298
Off-Highway Driving Guidelines P. 383 When Driving P. 385 Honda Sensing® P. 423
Multi-View Rear Camera P. 481 Refueling P. 483 Fuel Economy and CO
2 Emissions P. 486
Maintenance Under the Hood P. 496 Replacing Light Bulbs P. 508
Checking and Maintaining Tires P. 516 Battery P. 525 Remote Transmitter Care P. 527
Cleaning P. 529 Accessories and Modifications P. 535
Engine Does Not Start P. 549If the Battery Is Dead P. 552
Fuses P. 562 Emergency Towing P. 568
If You Cannot Unlock the Tailgate P. 570 Refueling P. 571
Devices that Emit Radio Waves P. 577 Reporting Safety Defects P. 578
Authorized Manuals P. 584 Customer Service Information P. 585
Quick Reference GuideP. 6
Safe DrivingP. 31
Instrument PanelP. 77
ControlsP. 115
FeaturesP. 203
DrivingP. 363
MaintenanceP. 487
Handling the UnexpectedP. 537
InformationP. 573
IndexP. 587

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Quick Reference Guide
Maintenance (P487)
Under the Hood (P496)
●Check engine oil, engine coolant, and windshield washer
fluid. Add when necessary.
●Check brake fluid.●Check the battery condition monthly.
aPull the hood release handle under the corner of the
dashboard.
bLocate the hood latch lever, push it to the side, and then
raise the hood. Once you have raised the hood slightly, you
can release the lever.
cWhen finished, close the hood and make sure it is firmly
locked in place.
Lights (P508)
●Inspect all lights regularly.
Wiper Blades (P514)
●Replace blades if they leave streaks across
the windshield or become noisy.
Tires (P516)
●Inspect tires and wheels regularly.●Check tire pressures regularly.●Install snow tires for winter
driving.

26
Quick Reference Guide
Handling the Unexpected (P537)
Flat Tire (P539)
●Park in a safe location and replace the
flat tire with the compact spare tire
located in the trunk.
Indicators Come On (P557)
●Identify the indicator and consult the
owner’s manual.
Engine Won’t Start (P549)
●If the battery is dead, jump start using a
booster battery.
Blown Fuse (P562)
●Check for a blown fuse if an electrical
device does not operate.
Overheating (P555)
●Park in a safe location. If you do not see
steam under the hood, open the hood,
and let the engine cool down.
Emergency Towing (P568)
●Call a professional towing service if you
need to tow your vehicle.

79
uuIndicators u
Continued
Instrument Panel
IndicatorNameOn/BlinkingExplanationMessage
Low Oil Pressure
Indicator
●Comes on when you set the
power mode to ON, and goes off
when the engine starts.
●Comes on when the engine oil
pressure is low.
●Comes on while driving - Immediately
stop in a safe place.
2 If the Low Oil Pressure Indicator Comes
On P. 557
Malfunction
Indicator Lamp
●Comes on when you set the
power mode to ON, and goes off
either when the engine starts, or
after several seconds if the
engine did not start. If “readiness
codes” have not been set, it
blinks five times before it goes
off.
●Comes on if there is a problem
with the emissions control
systems.
●Blinks when a misfire in the
engine’s cylinders is detected.
●Readiness codes are part of the on board
diagnostics for the emissions control
systems.
2 Testing of Readiness Codes P. 579●Comes on while driving - Have your
vehicle checked by a dealer.
●Blinks while driving - Stop in a safe place
where there are no flammable objects. Stop
the engine for 10 minutes or more, and wait
for it to cool down. Then, take your vehicle
to a dealer.
2 If the Malfunction Indicator Lamp
Comes On or Blinks P. 558
Charging System
Indicator
●Comes on when you set the
power mode to ON, and goes off
when the engine starts.
●Comes on when there is a
problem with the charging
system.
●Comes on while driving - Turn off the
climate control system and rear defogger in
order to reduce electricity consumption.
2 Checking the Battery P. 525
2 If the Charging System Indicator Comes
On P. 557

96
uuIndicators uMulti-Information Display Warn ing and Information Messages
Instrument Panel
Multi-Information Display Warn ing and Information Messages
The following messages appear only on the mu lti-information display. Press the (information) button to see the message again
with the system me ssage indicator on.
*1:When the tailgate is dropped open, the message does not appear.
MessageConditionExplanation
●Appears if any door, th e trunk or the tailgate*1 is not
completely closed.
●Appears if any door, th e trunk or the tailgate*1 is
opened while driving. The beeper sounds.
●Disappears when all the doors, the trunk and the
tailgate are closed.
●Appears when there is a problem with the battery
charging system.●Have your vehicle ch ecked by a dealer.
●Appears when the scheduled maintenance is due soon.●Consequently, Maintenance Due Now and
Maintenance Past Due follow.2Maintenance Minder Messages on the Multi-
Information Display P. 492
●Appears when the engine coolant temperature gets
abnormally high.
2Overheating P. 555

98
uuIndicators uMulti-Information Display Warn ing and Information Messages
Instrument Panel
MessageConditionExplanation
●Appears after the driver’s door is opened when the
power mode is in ACCESSORY.●Change the power mode to VEHICLE OFF.
2 ENGINE START/STOP Button P. 145
●Appears when you close the door with the power mode
in ON without the smart entry remote inside the vehicle.●Disappears when you bring the smart entry remote back
inside the vehicle and close the door.
2Smart Entry Remote Reminder P. 147
●Appears when the smart entry remote battery becomes
weak.
2Replacing the Button Battery P. 527
●Appears if the smart entry remote battery is too weak to
start the engine or the key is not within operating range
to start the engine.
The beeper sounds six times.●Bring the back of the smart entry remote into contact
with the ENGINE START/STOP button.
2If the Smart Entry Remote Battery is Weak P. 550
●Appears three seconds after the To Start, Hold
Remote Near Start Button, then To Start Engine:
Brake + Push messages appeared sequentially.●Unless you bring the back of the smart entry remote into
contact with the ENGINE START/STOP button, this
message does not appear.
2 If the Smart Entry Remote Battery is Weak P. 550

106
uuIndicators uMulti-Information Display Warn ing and Information Messages
Instrument Panel
MessageConditionExplanation
●Appears when Auto Engine Idle Stop Guidance
Screen On has been selected from the customization
menu.
2 Customized Features P. 298
2Auto Idle Stop P. 406
●Appears when Auto Idle Stop does not activate for
some reason.
●Appears when the engine restarts automatically.●Appears when the battery te mperature is around 14°F
(−10°C) or lower.
2 Auto Idle Stop Activates When: P. 408
●Appears when Auto Idle Stop does not activate because
the climate control system is in use, and the difference
between the set temperature and actual interior
temperature becomes significant.
●Appears when Auto Idle Stop does not activate because
the engine coolant temperature is too low or high.
●Appears when Auto Idle Stop does not activate because
the battery charge level is low.
●Appears when the battery is low performance.

107
uuIndicators uMulti-Information Display Warning and Information Messages
Continued
Instrument Panel
MessageConditionExplanation
●Appears when Auto Idle St op does not activate because
the pressure to the brake pedal is not enough.●Depress the brake pedal firmly.
2 Auto Idle Stop P. 406
●Appears when Auto Engine Idle Stop Guidance
Screen On has been selected from the customization
menu.
2 Customized Features P. 298
2Auto Idle Stop P. 406
●Appears when the system is under the following
conditions while Auto Idle Stop activates:
- The climate control system is in use, and the difference
between the set temperature and actual interior
temperature becomes significant.
- The humidity in the interior is high.
- The battery charge level is low.●The engine restarts automatically in a few seconds.
2 Auto Idle Stop P. 406
2 The Engine Automatically Restarts When: P. 410
●Appears when the hood is opened.●Close the hood.