2021 HONDA RIDGELINE dead battery open trunk

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

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.

133
Controls
Opening and Closing the Trunk
Precautions for Opening/Closing the Trunk
■Opening the trunk
Open the trunk all the way. u If it is not fully opened, the trunk lid may begin to close under its own weight.
■Closing the trunk
Keep the trunk lid closed while driving to:
u Avoid possible damage.
Using the key
If the smart entry remote battery or the ve hicle battery is dead, use the key instead
of the smart entry remote. 1.Swing open the tailgate.
2. Fully insert the key and turn it.
3. Open the trunk.
1Opening and Closing the Trunk
3WARNING
Anyone caught in the path of a tailgate
that is being opened or closed can be
seriously injured.
Make sure that all people are clear of the
tailgate before opening or closing it.

Continued137
uuSecurity System uSecurity System Alarm
Controls
■To deactivate the security system alarm
Unlock the vehicle using the key, remote tra nsmitter, or smart entry system, or the
power mode is set to ON. The system, along with the horn and flashing lights, is
deactivated.
■Setting the security system alarm
The security system alarm automatically sets when the following conditions have
been met:
• The power mode is set to VEHICLE OFF (LOCK).
• The hood is closed.
• All doors and trunk are locked from outsid e with the key, remote transmitter, or
smart entry system.
■When the security system alarm sets
The security system alarm in dicator in the instrument panel blinks and the blinking
interval changes after about 15 seconds.
■To cancel the security system alarm
The security system alarm is canceled wh en the vehicle is unlocked using the key,
remote transmitter, or smart entry system, or when the power mode is set to ON.
The security system alarm indica tor goes off at the same time.
1Security System Alarm
Do not set the security system alarm when someone
is in the vehicle or a window is open. The system can
accidentally activate when:
•Unlocking the door with the lock tab.•Opening the trunk with the trunk release or the
emergency trunk opener.
•Opening the hood with the hood release.
If the battery goes dead after you have set the
security system alarm, the security alarm may go off
once the battery is re charged or replaced.
If this occurs, deactivate the security system alarm by
unlocking a door using the ke y, remote transmitter,
or smart entry system.

588
Index
Average Fuel Economy............................. 113
B
Battery....................................................... 525
Charging System Indicator ................. 79, 557
If the Battery Is Dead ............................... 552
Maintenance (Checking the Battery) ........ 525
Bed Lights .................................................. 193
Indicator .................................................... 95
Belts (Seat) .................................................. 37
Beverage Holders ...................................... 179
Blind spot information System ................ 420
Indicator .................................................... 92
Bluetooth ® Audio ..................................... 259
Bluetooth ® HandsFreeLink ®................... 329
Booster Seats (For Children) ....................... 73
Brake System ............................................. 468
Anti-lock Brake System (ABS) ................... 470
Brake Assist System ................................. 471
Brake System Indicator............................... 78
Fluid ........................................................ 507
Foot Brake ............................................... 469
Indicator ............................................ 78, 559
Parking Brake .......................................... 468
Brake System Indicator (Amber) ................ 78
Brake System Indicator (Red) ............. 78, 559
Brightness Control (Instrument Panel) .... 160
Bulb Replacement ..................................... 508
Brake/Taillight and Rear Side Marker
Light ...................................................... 512 Daytime Running Light
and Parking
Light...................................................... 510
Front Side Marker Light ........................... 510
Front Turn Signal/Parking Light ................ 511
Headlights ............................................... 508
High-Mount Brake Light .......................... 513
Rear License Plate Light ........................... 513
Rear Turn Signal and Back-Up Light ......... 512
Side Turn Signal/Emergency Indicator Light...................................................... 511
Bulb Specifications ................................... 574
C
Car Wash Mode........................................ 399
Carbon Monoxide Gas ............................... 74
Cargo Hooks ............................................. 194
Carrying Cargo ......................... 365, 367, 370
Certification Label .................................... 576
Changing Bulbs ........................................ 508
Charging System Indicator ................. 79, 557
Child Safety ................................................. 59
Childproof Door Locks............................. 129
Emergency Trunk Opener ........................ 135
Child Seat .................................................... 59
Booster Seats ............................................ 73
Child Seat for Infants................................. 61
Child Seat for Small Children ..................... 62
Installing a Child Seat with a Lap/Shoulder Seat Belt ......................................................... 67 Installing a LATCH-Compatible Child
Seat ........................................................ 64
Larger Children ......................................... 72
Rear-facing Child Seat............................... 61
Selecting a Child Seat ............................... 63
Using a Tether .......................................... 69
Childproof Door Locks ............................. 129
Cleaning the Exterior ............................... 531
Cleaning the Interior ............................... 529
Climate Control System ........................... 195
Changing the Mode................................ 195
Defrosting the Windshield and Windows .............................................. 196
Dust and Pollen Filter .............................. 528
Recirculation and Fresh Air Mode ............ 196
Sensors ................................................... 201
Synchronized Mode ................................ 198
Using Automatic Climate Control............ 195
Clock ......................................................... 116
Coat Hook ................................................ 180
Collision Mitigation Braking System
TM
(CMBSTM) ................................................. 426
Indicator ............................................. 93, 94
Compact Spare Tire .......................... 539, 575
Console Compartment ............................. 178
Controls .................................................... 115
Conversation Mirror ................................ 181
Coolant (Engine) ...................................... 504
Adding to the Radiator ........................... 505
Adding to the Reserve Tank .................... 504
Overheating ............................................ 555

589
Index
Creeping (Automatic Transmission)........ 394
Cross Traffic Monitor ............................... 477
Cup Holders .............................................. 179
Customer Service Information ................ 585
Customized Features ............................... 298
D
Daytime Running Lights .......................... 153
Dead Battery ............................................ 552
Defaulting All the Settings ...................... 322
Defogger/Heated Door Mirror ................ 159
Defrosting the Windshield and
Windows ................................................. 196
Devices that Emit Radio Waves ............... 577
Dimming
Headlights .............................................. 149
Rearview Mirror ...................................... 164
Dipstick (Engine Oil) ................................ 500
Directional Signals (Turn Signal) ............. 148
Display Button .......................................... 212
Door Mirrors ............................................. 165
Doors ........................................................ 117
Auto Door Locking.................................. 130
Auto Door Unlocking .............................. 130
Door Open Message ........................... 36, 96
Key ......................................................... 117
Locking/Unlocking the Doors from the Inside................................ 16, 127
Locking/Unlocking the Doors
from the Outside................................... 120 Lockout Prevention System ...................... 126
DOT Tire Quality Grading ........................ 519
Driving ....................................................... 363
Adaptive Cruise Control (ACC) ................ 438
Automatic Transmission ........................... 394
Braking .................................................... 468
Off-Highway Driving Guidelines ............... 383
Shifting ................................................... 395
Starting the Engine .................................. 385
Driving Guidelines for Your Utility Vehicle ..................................................... 392
Driving Position Memory System ............. 161
Dust and Pollen Filter ............................... 528
E
Eco Assist® System ...................................... 12
ECON Button ............................................. 403
ECON Mode Indicator ................................ 92
Electric Power Steering (EPS) System Indicator ............................................ 85, 559
Electronic Stability Control (ESC) ............. 412
Emergency ................................................ 568
Emergency Trunk Opener ........................ 135
Emissions Testing (Readiness Codes) ....... 579
Engine Coolant ................................................... 504
If the Battery Is Dead ............................... 552
Oil ........................................................... 499
Remote Engine Start ................................ 387
Starting ................................................... 385 Engine Compartment Cover
.................... 498
Engine Coolant ......................................... 504
Adding to the Radiator ............................ 505
Adding to the Reserve Tank..................... 504
Overheating ............................................ 555
Temperature Gauge ................................ 110
Engine Oil ................................................. 499
Adding .................................................... 501
Checking................................................. 500
Displaying Oil Life .................................... 491
Low Oil Pressure Indicator ................. 79, 557
Recommended Engine Oil ....................... 499
ENGINE START/STOP Button .................... 145
EPS (Electric Power Steering) System
Indicator............................................ 85, 559
Exhaust Gas Hazard (Carbon Monoxide) .................................. 74
Exterior Care (Cleaning) ........................... 531
Exterior Mirrors ........................................ 165
F
Features.................................................... 203
Filters
Dust and Pollen ....................................... 528
Oil ........................................................... 502
Flat Tire ..................................................... 539
Floor Mats ................................................. 530
Fluids Automatic Transmission .......................... 506
Brake ...................................................... 507

594
Index
Spare Tire.......................................... 539, 575
Spark Plugs ................................................ 574
Specifications ............................................ 574
Specified Fuel .................................... 483, 574
Speedometer ............................................. 110
SRS Airbags (Airbags) ................................. 47
Starting Assist Brake Function ................. 411
Starting the Engine .................................. 385
Does Not Start ......................................... 549
If the Battery Is Dead ............................... 552
Remote Engine Start ................................ 387
Steering Wheel ......................................... 163
Adjusting ................................................. 163
Heater ..................................................... 187
Stopping .................................................... 472
Summer Tires ............................................ 524
Sunglasses Holder ..................................... 181
Supplemental Restraint System (SRS) ........ 47
Indicator .................................................... 82
Switches (Around the Steering Wheel) ......... 6, 7, 145
SYNC Mode ............................................... 198
System Message Indicator .......................... 87
T
Tachometer............................................... 110
Tailgate ..................................................... 131
Unable to Unlock ..................................... 570
Temperature
Gauge ..................................................... 110 Outside Temperature Display ................... 113
Temperature Gauge ................................. 110
Temperature Sensor ......................... 113, 201
Tie-down Anchors .................................... 193
Time (Setting) ........................................... 116
Tire Fill Assist .................................... 416, 560
Tires ........................................................... 516
Air Pressure ..................................... 517, 575
Checking and Maintaining ...................... 516
Inspection ............................................... 516
Labeling .................................................. 517
Puncture (Flat Tire) .................................. 539
Regulations ............................................. 519
Rotation .................................................. 523
Spare Tire ........................................ 539, 575
Summer .................................................. 524
Tire Chains .............................................. 524
Wear Indicators ....................................... 521
Winter..................................................... 524
Tools .......................................................... 538
Towing a Trailer ....................................... 372
Equipment and Accessories ..................... 375
Load Limits .............................................. 372
Towing Your Vehicle ................................ 382
Emergency .............................................. 568
TPMS with Tire Fill Assist ......................... 416
Indicator............................................ 85, 560
Tire Fill Assist ........................................... 560
Trailer Stability Assist ............................... 380
Transmission ............................... 21, 394, 395
Automatic ................................. 21, 394, 395 Fluid ....................................................... 506
Number .................................................. 576
Sequential Mode..................................... 401
Shift Position Indicator ...................... 80, 397
Transmission System Indicator ................. 561
Trip Meter ................................................ 113
Troubleshooting ...................................... 537
Blown Fuse ..................... 562, 564, 565, 566
Brake Pedal Vibrates ................................. 27
Buzzer Sounds When Opening Door ......... 28
Emergency Towing ................................. 568
Engine Won’t Start ................................. 549
Noise When Braking ................................. 28
Overheating ............................................ 555
Puncture/Flat Tire .................................... 539
Rear Door Won’t Open ..................... 27, 129
Warning Indicators.................................... 78
Truck Bed Audio ...................................... 277
Trunk ........................................................ 133
Lid .......................................................... 133
Main Switch............................................ 134
Turn Signals .............................................. 148
Indicators (Instru ment Panel) ..................... 85
Turn-by-Turn Directions .......................... 114U
Unlocking the Doors................................ 120
Unlocking the Front Doors from the Inside ................................. 16, 127
USB Flash Drives ............................... 256, 282