2021 HONDA RIDGELINE oil pressure

488
Maintenance
Before Performing Maintenance
Inspection and Maintenance
For your safety, perform all listed inspections and maintenance to keep your vehicle
in good condition. If you become aware of an y abnormality (noise, smell, insufficient
brake fluid, oil residue on the ground, etc.), have your vehicle inspected by a dealer.
(Note, however, that service at a dealer is not mandatory to keep your warranties in
effect.)
■Routine inspections
Perform inspections before long distance tri ps, when washing the vehicle, or when
refueling.
2 Maintenance P. 25
■Periodic inspections
• Check the brake fluid level monthly.
2 Checking the Brake Fluid P. 507
•Check the tire pressure monthly. Examin e the tread for wear and foreign objects.
2Checking and Maintaining Tires P. 516
•Check the operation of the exterior lights monthly.
2 Replacing Light Bulbs P. 508
•Check the condition of the wiper bl ades at least every six months.
2Checking and Maintaining Wiper Blades P. 514
■Types of Inspection and Maintenance
1Inspection and Maintenance
Maintenance, replacement, or repair of
emissions control devices and systems may be
done by any automotive repair establishment or
individuals using parts that are “certified” to
EPA standards.
According to state and fede ral regulations, failure to
perform maintenance on the maintenance main
items marked with # will not void your emissions
warranties. However, all ma intenance services should
be performed in accordan ce with the intervals
indicated by the mult i-information display.
2 Maintenance Service Items P. 494
If you want to perform complex maintenance tasks
that require more skills a nd tools, you can purchase a
subscription to the Service Express website at
www.techinfo.honda.com .
2 Authorized Manuals P. 584
If you want to perform ma intenance yourself, make
sure that you have the necessary tools and skills first.
After performing maintenanc e, update the records in
the separate maintenance booklet.
U.S. models

503
uuMaintenance Under the Hood uChanging the Engine Oil and Oil Filter
Maintenance
4. Remove the oil filter and dispose of the
remaining oil.
5. Check that the filter gasket is not stuck to
the engine contact surface.
u If it is stuck, you must detach it.
6. Wipe away dirt and dust adhering to the
contact surface of the oil filter base, and
install a new oil filter.
u Apply a light coat of new engine oil to
the oil filter rubber seal.
7. Put a new washer on the drain bolt, then
reinstall the drain bolt.
u Tightening torque:
30 lbf∙ft (40 N∙m, 4.1 kgf∙m)
8. Pour the recommended engine oil into the
engine.
u Engine oil change capacity (including
filter):
5.7 US qt (5.4 L)
9. Reinstall the engine oil fill cap securely and
start the engine.
10. Run the engine for a few minutes, and
then check that there is no leak from the
drain bolt or oil filter.
11. Stop the engine, wait for three minutes,
and then check the oil level on the
dipstick.
u If necessary, add more engine oil.1Changing the Engine Oil and Oil Filter
You will need a special wrench to replace the oil
filter. You can buy this wrench from a dealer.
When installing the new oil filter, follow the
instructions supplied with the oil filter.
Reinstall the engine oil fill cap. Start the engine. The
low oil pressure indicator should go off within five
seconds. If it does not, turn off the engine, and check
your work.
Oil Filter

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

557
Handling the Unexpected
Indicator, Coming On/Blinking
If the Low Oil Pressure Indicator Comes On
■Reasons for the indicator to come on
Comes on when the engine oil pressure is low.
■What to do as soon as the indicator comes on
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 check the oil level.
2 Oil Check P. 500
3.Start the engine and check th e low oil pressure indicator.
u The indicator goes off: Start driving again.
u The indicator does not go off within 10 seconds: Immediately stop
the engine and contact a dealer for repairs.
If the Charging System Indicator Comes On
■Reasons for the indicator to come on
Comes on when there is a prob lem with the charging system.
■What to do when the indicator comes on
Turn off the climate control system, rear defogger, and other electrical
systems, and immediately co ntact a dealer for repairs.
1If the Low Oil Pressure Indicator Comes On
NOTICE
Running the engine with low oil pressure can cause
serious mechanical damage almost immediately.
1If the Charging System Indicator Comes On
If you need to stop temporarily, do not turn off the
engine. Restarting the engi ne may rapidly discharge
the battery.

575
uuSpecifications u
Information
■
Brake Fluid
■ Automatic Tran smission Fluid
■ Rear Differential Fluid
*
■Transfer Assembly Fluid*
SpecifiedHonda Heavy Duty Brake Fluid DOT 3
SpecifiedHonda ATF-TYPE 3.1 or higher
Capacity Change 3.7 US qt (3.5 L)
SpecifiedHonda DPSF-II
Capacity Change 1.92 US qt (1.82 L)
SpecifiedHonda HGO-1
Capacity Change 0.45 US qt (0.43 L)
■ Engine Oil
■ Engine Coolant
Recommended·Honda Genuine Motor Oil 0W-20
·API Premium-grade 0W-20 detergent oil
Capacity Change 5.4 US qt (5.1 L)
Change
including
filter
5.7 US qt (5.4 L)
SpecifiedHonda Long Life Antifreeze/Coolant Type 2
Ratio 50/50 with distilled water
Capacity1.96 US gal (7.40 L)
(change including the remaining 0.22 US gal
(0.82 L) in the reserve tank)
■ Tire
RegularSize245/60R18 105HPressure
psi (kPa [kgf/cm2])35 (240 [2.4])
Compact
Spare Size
T165/90R17 105M
Pressure
psi (kPa [kgf/cm
2]) 60 (420 [4.2])
Wheel SizeRegular18 x 8JCompact Spare17 x 4T
* Not available on all models

Index
587
Index
Index
A
ABS (Anti-lock Brake System).................. 470
AC Power Outlet ...................................... 191
Accessories and Modifications ................ 535
Accessory Power Sockets ......................... 182
Adaptive Cruise Control (ACC) ................ 438
Indicator ................................................... 91
Additives
Coolant .................................................. 504
Engine Oil ............................................... 499
Washer ................................................... 507
Adjusting Armrest .................................................. 174
Front Seats.............................................. 166
Head Restraints ............................... 171, 172
Mirrors.................................................... 164
Rear Seats ............................................... 169
Steering Wheel ....................................... 163
Temperature ........................................... 113
Agile Handling Assist ............................... 414
Air Conditioning System (Climate Control System) .................................................... 195
Changing the Mode................................ 195
Defrosting the Windshield and Windows .............................................. 196
Dust and Pollen Filter .............................. 528
Recirculation/Fresh Air Mode................... 196
Sensor .................................................... 201
Synchronized Mode ................................ 198
Using Automatic Climate Control............ 195
Air Pressure ...................................... 517, 575 Airbags
........................................................ 44
Advanced Airbags ..................................... 50
After a Collision ......................................... 47
Airbag Care ............................................... 58
Event Data Recorder .................................... 0
Front Airbags (SRS) .................................... 47
Indicator .............................................. 55, 82
Passenger Airbag Off Indicator .................. 56
Sensors ...................................................... 44
Side Airbags .............................................. 52
Side Curtain Airbags .................................. 54
All-wheel drive (AWD) Indicator ............... 88
AM/FM Radio ............................................ 236
Android Auto ............................................ 273
Anti-lock Brake System (ABS) .................. 470
Indicator .................................................... 82
Apple CarPlay ........................................... 269
Armrest ..................................................... 174
Audio Remote Controls ............................ 209
Audio System ............................................ 204
Adjusting the Sound ................................ 229
Audio/Information Screen ........................ 212
Auxiliary Input Jack .................................. 207
Changing the Home Screen Icon Layout ................................................... 216
Closing Apps ........................................... 226
Display Setup ........................................... 230
Error Messages ........................................ 278
General Information ................................ 281
Home Screen ........................................... 219
Limitations for Manua l Operation ............ 231 MP3/WMA/AAC ...................................... 256
Reactivating ............................................ 208
Remote Controls ..................................... 209
Security Code .......................................... 208
Selecting an Audio Source ....................... 231
Status Area ............................................. 225
Theft Protection ...................................... 208
Truck Bed Audio...................................... 277
USB Flash Drives .............................. 256, 282
USB Port.................................................. 205
Wallpaper Setup...................................... 217
Audio/Information Screen ....................... 212
Authorized Manuals ................................ 584
Auto Door Locking/Unlocking ................. 130
Customize ....................................... 314, 315
Auto High-Beam ....................................... 154
Indicator.................................................... 86
Auto Idle Stop .......................................... 406
OFF Button .............................................. 407
Auto Idle Stop Indicator (Green) ............... 89
Auto Idle Stop System Indicator (Amber) ..................................................... 89
Automatic Intermittent Wipers ............... 158
Automatic Lighting .................................. 150
Automatic Transmission ........................... 394
Creeping ................................................. 394
Fluid ................. .....................

.................. 506
Kickdown ................................................ 394
Operating the Shift Button ...................... 397
Shifting ................................................... 395
Auxiliary Input Jack .................................. 207

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

591
Index
Illumination Control................................ 160
Button .................................................... 160
Immobilizer System .................................. 136
Indicator ................................................... 86
In-Bed Box ................................................ 191
Indicators .................................................... 78
Adaptive Cruise Control (ACC).................. 91
All-wheel drive (AWD)............................... 88
Anti-lock Brake System (ABS) .................... 82
Auto High-Beam ....................................... 86
Auto Idle Stop........................................... 89
Auto Idle Stop System ............................... 89
Bed Lights On ........................................... 95
Blind spot information System........... 92, 421
Brake System (Amber) ............................... 78
Charging System............................... 79, 557
Collision Mitigati on Braking System
TM
(CMBSTM) .......................................... 93, 94
ECON Mode ............................................. 92
Electric Power Steering (EPS) System ............................................ 85, 559
Fog Lights ................................................. 86
High Beam ................................................ 85
Immobilizer System ................................... 86
Intelligent Traction Management .............. 95
Lane Keeping Assist System (LKAS) ....................................... 91, 92, 453
Lights On .................................................. 86
Low Fuel ................................................... 82
Low Oil Pressure ............................... 79, 557
Low Tire Pressure/TPMS .................... 85, 560 M (sequential mode)/Se
quential Mode Gear
Selection.................................................. 80
Malfunction Indicator Lamp ............... 79, 558
Parking Brake and Brake System (Red)................................................ 78, 559
Road Departure Mitigation ........................ 90
Seat Belt Reminder .............................. 38, 81
Security System Alarm ............................... 87
Shift Position ............................................. 80
Smart Entry System .................................... 88
Supplemental Restraint System ............ 55, 82
System Message ........................................ 87
Transmission System .................... 80, 81, 561
Turn Signal and Haza rd Warning ............... 85
Vehicle Stability Assist
TM (VSA ®) OFF ......... 413
Vehicle Stability AssistTM (VSA ®)
System............................................. 83, 412
Information ............................................... 573
Information Button .................................. 111
Instant Fuel Economy ............................... 114
Instrument Panel ........................................ 77
Brightness Control ................................... 160
Intelligent Traction Management System ..................................................... 404
Indicator .................................................... 95
Intelligent Variable Torque Management (i- VTM4
TM) AWD System ............................ 415
Interior Lights ........................................... 175
Interior Rearview Mirror .......................... 164
iPhone ....................................................... 282
iPod ................................................... 247, 282
J
Jack (Wheel Nut Wrench) ........................ 543
Jump Starting ........................................... 552
K
Key............................................................ 117
Lockout Prevention.................................. 126
Number Tag ............................................ 118
Rear Door Won’t Open............................ 129
Remote Transmitter ................................. 125
Key Number Tag ....................................... 118
Keyless Lockout Prevention ..................... 126
Kickdown (Automatic Transmission) ....... 394
L
Lane Keeping Assist System (LKAS)......... 451
Indicator.............................................. 91, 92
LATCH (Child Seats) .............................. 64, 69
Lights ................................................. 149, 508
Auto High Beam...................................... 154
Automatic ............................................... 150
Bed ......................................................... 193
Bulb Replacement ................................... 508
Daytime Running Lights........................... 153
Fog Lights ............................................... 152
High Beam Indicator .................................. 85
Interior .................................................... 175
Light Switches ......................................... 149
Lights On Indicator .................................... 86