2018 HONDA RIDGELINE ECO mode

504
uuParking Your Vehicle uParking Sensor System*
Driving
■When the distance between your vehicle and obstacles behind becomes shorter
*1: At this stage, only the center sensors detect obstacles.
Length of the
intermittent beepDistance between the Bumper and ObstacleIndicatorAudio/information screenCorner SensorsCenter Sensors
Moderate—Rear: About 43-32 in (110-80 cm) Blinks in Yellow*1
Short
Front: About 24-18 in (60-45 cm)
Rear: About 32-22 in (80-55 cm)
Rear: About 32-22 in
(80-55 cm)
Blinks in Amber
Very short
Front: About 18-14 in (45-35 cm)
Rear: About 22-18 in (55-45 cm)
Rear: About 22-18 in
(55-45 cm)
Continuous
Front: About 14 in (35 cm) or less
Rear: About 18 in (45 cm) or less
Rear: About 18 in
(45 cm) or lessBlinks in Red
Indicators light where the
sensor detects an obstacle

505
uuParking Your Vehicle uParking Sensor System*
Driving
1. Make sure that the parking sensor system is not activated. Set the power mode to
VEHICLE OFF (LOCK).
2. Press and hold the parking sensor system button, and set the power mode to ON.
3. Keep pressing the button for 10 seconds. Release the button when the indicator
in the button flashes.
4. Press the button again. The indi cator in the button goes off.
u The beeper sounds twice. The rear sensors are now turned off.
To turn the rear sensors on again, follo w the above procedure. The beeper sounds
three times when the rear sensors come back on.
■Turning off All Rear Sensors1 Turning off All Rear Sensors
When you shift to
(R, the indicator in the parking
sensor system button blinks as a reminder that the
rear sensors have been turned off.

517
Maintenance
This chapter discusses basic maintenance.
Before Performing MaintenanceInspection and Maintenance ............ 518
Safety When Performing Maintenance ... 519
Parts and Fluids Used in Maintenance Service ........................................... 520
Maintenance Minder
TM..................... 521
Maintenance Under the Hood Maintenance Items Under the Hood .... 525
Opening the Hood ........................... 526
Engine Compartment Cover ............. 527
Recommended Engine Oil ................ 528
Oil Check ......................................... 529
Adding Engine Oil ............................ 530
Changing the Engine Oil and Oil Filter ...531 Engine Coolant ................................ 533
Transmission Fluid ............................ 535
Brake Fluid ....................................... 536
Refilling Window Washer Fluid......... 536
Replacing Light Bulbs ....................... 537Checking and Maintaining Wiper
Blades .......................................... 543
Checking and Maintaining Tires
Checking Tires ................................. 545
Tire and Loading Information Label ... 546
Tire Labeling .................................... 546
DOT Tire Quality Grading (U.S. Vehicles) .... 548Wear Indicators................................ 550 Tire Service Life ................................ 550
Tire and Wheel Replacement ........... 551
Tire Rotation .................................... 552
Winter Tires ..................................... 553
Battery ............................................... 554
Remote Transmitter Care Replacing the Button Battery ........... 555
Heating and Cooling System*/Climate
Control System* Maintenance............. 556Cleaning Interior Care .................................... 557
Exterior Care.................................... 559
Accessories and Modifications ........ 563
* Not available on all models

518
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 any 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.)
■Daily inspections
Perform inspections before long distance trips, when washing the vehicle, or when
refueling.
■Periodic inspections
• Check the automatic transmission fluid level monthly.
2 Automatic Transmission Fluid P. 535
•Check the brake fluid level monthly.
2 Checking the Brake Fluid P. 536
•Check the tire pressure monthly. Examin e the tread for wear and foreign objects.
2Checking and Maintaining Tires P. 545
•Check the operation of the exterior lights monthly.
2Replacing Light Bulbs P. 537
•Check the condition of the wiper bl ades at least every six months.
2Checking and Maintaining Wiper Blades P. 543
■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 maintenance services should
be performed in accordan ce with the intervals
indicated by the mult i-information display.
2 Maintenance Service Items P. 523
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. 609
If you want to perform ma intenance yourself, make
sure that you have the necessary tools and skills first.
After performing ma intenance, update the records in
the separate maintenance booklet.
U.S. models

523
uuMaintenance MinderTMuTo Use Maintenance MinderTM
Continued
Maintenance
■Maintenance Service Items1Maintenance Service Items
•Independent of the maintenance message in the
multi-information display, replace the brake fluid
every 3 years.
•Adjust the valves during services A, B, 1, 2, or 3 if
they are noisy.
Maintenance Minder MessageSystem Message
Indicator
Sub Items
Main
Item
*1: If the message
Maintenance Due Now does not appear more than 12 months after the display
is reset, change the engine oil every year.
# : See information on maintenance and emissions warranty in the first column on page 607.
*2: If you drive in dusty conditions, replace the air cleaner element every 15,000 miles (24,000 km).
*3: If you drive primarily in urban areas that have high concentrations of soot in the air from industry and from diesel-powered vehicles, replace every 15,000 miles (24,000 km).
CODEMaintenance Main Items
A
●Replace engine oil*1
B●Replace engine oil*1 and oil filter●Inspect front and rear brakes●Check parking brake adjustment●Inspect tie rod ends, steering gearbox, and boots●Inspect suspension components●Inspect driveshaft boots●Inspect brake hoses and li nes (Including ABS/VSA)●Inspect all fluid levels and condition of fluids●Inspect exhaust system#
●Inspect fuel lines and connections#
*4: If you drive regularly in very high temperatures (over 110°F, 43°C), in very low temperatures (under
-20°F, -29°C), or towing a trailer, replace every 60,000 miles (U.S.) / 100,000 km (Canada).
*5: Driving in mountainous areas at very low vehicle speeds or trailer towing results in higher level of mechanical (Shear) stress to fluid. This requires differential fluid changes more frequently than
recommended by the Maintenance Minder. If you regularly drive your vehicle under these conditions,
have the differential fluid changed at 7,500 miles (12,000 km), then every 15,000 miles (24,000 km).
CODEMaintenance Sub Items
1
●Rotate tires
2●Replace air cleaner element*2
●Replace dust and pollen filter*3
●Inspect drive belt
3
●Replace transmission fluid and transfer fluid*
4●Replace spark plugs●Replace timing belt and inspect water pump*4
●Inspect valve clearance
5
●Replace engine coolant
6●Replace rear differential fluid*, *5
* Not available on all models

551
uuChecking and Maintaining Tires uTire and Wheel Replacement
Maintenance
Tire and Wheel Replacement
Replace your tires with radials of the sa me size, load range, speed rating, and
maximum cold tire pressure rating (as shown on the tire’s sidewall). Using tires of a
different size or construction can cause the Vehicle Stability Assist (VSA ®), hill start
assist, and the all-wheel drive (AWD)
* systems as well as ABS to work incorrectly.
It is best to replace all four tires at the same time. If that isn’t possible, replace the
front or rear tires in pairs.
If you replace a wheel, only use TPMS spec ified wheels approved for your vehicle.
Make sure that the wheel’s specificati ons match those of the original wheels.
1Tire and Wheel Replacement
3WARNING
Installing improper tires on your vehicle can
affect handling and stability. This can cause
a crash in which you can be seriously hurt or
killed.
Always use the size and type of tires
recommended in this owner’s manual.
* Not available on all models

554
Maintenance
Battery
Checking the Battery
The condition of the battery is monitored by a sensor located on the negative
terminal of the battery. If there is a prob lem with this sensor, the multi-information
display will display a warning message. If this happens, have you vehicle inspected
by a dealer.
Check the battery termin als for corrosion monthly.
If your vehicle’s battery is disconnected or goes dead:
• The audio system is disabled.
2 Audio System Theft Protection P. 203
•The clock resets.
2 Clock P. 110
Charging the Battery
Disconnect both battery cables to prevent da maging your vehicle’s electrical system.
Always disconnect the negative (–) cable first, and reconnect it last.
1 Battery
WARNING: Battery post, terminals,
and related accessories contain lead
and lead compounds.
Wash your hands after handling.
If you find corrosion, clea n the battery terminals by
applying a baking powder a nd water solution. Clean
the terminals with a damp towel. Cloth/towel dry the
battery. Coat the terminals with grease to help
prevent future corrosion.
3WARNING
The battery gives off explosive hydrogen
gas during normal operation.
A spark or flame can cause the battery to
explode with enough force to kill or
seriously hurt you.
When conducting any battery
maintenance, wear prot ective clothing and
a face shield, or have a skilled technician do
it.
Models without navigation system

556
Maintenance
Heating and Cooling System*/Climate Control System* Maintenance
Air Conditioning
To ensure proper and safe operation, the 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 conditioni ng 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 heating and cooling system*/climate control system* is equipped with a dust
and pollen filter that collects pollen, dust, and other debris in the air. The
Maintenance Minder
TM messages will let you know when to replace the filter.
We recommend that you replace the dust and pollen filter sooner when using your
vehicle in areas with high concentrations of dust.
1Heating and Cooling System*/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.
Air Conditioner label is found under the hood: 2 Safety Labels P. 71
2 Specifications P. 600
Canadian models
: Caution
: Flammable Refrigerant
: Requires Registered
Technician to Service
: Air Conditioning
System
1Dust and Pollen Filter
If the airflow from the heating and cooling system
*/
climate control system* deteriorates noticeably, and
the windows fog up easily, the filter may need to be
replaced. Please contact a dealer for replacement.
* Not available on all models