2018 HONDA RIDGELINE cooling

429
uuTowing a Trailer uTowing Your Vehicle
Driving
• Monitor your temperature gauge. If it nears the mark, turn off the heating
and cooling system*/climate control system* and reduce speed. Pull to the side of
the road safely to cool down the engine if necessary.
• Shift to the position if the transmission shifts frequently.
If the vehicle tires slip when retrieving a boat from the water, keep the transmission
in
(D. This prevents damage to the transmission.
Towing Your Vehicle
Your vehicle is not designed to be towed behind a motorhome. If your vehicle needs
to be towed in an emergency, refer to the emergency towing information.
2Emergency Towing P. 594
■Driving in Hilly Terrain
■Retrieving a Boat
H
D4
* Not available on all models

432
Driving
When Driving
Starting the Engine
1.Make sure the parking brake is applied.
2. Check that the shift lever is in
(P, then
depress the brake pedal.
u Although it is possible to start the vehicle
in
(N, it is safer to start it in (P.
3. Press the ENGINE START/STOP button
without depressing the accelerator pedal.
The engine will crank until it starts.
1 Starting the Engine
Keep your foot firmly on the brake pedal when
starting the engine.
The engine is harder to st art in cold weather and in
thinner air found at altitudes above 8,000 feet (2,400
meters).
When starting the engine in cold weather, turn off all
electrical accessories such as the lights, heating and
cooling system
*/climate control system*, and rear
defogger in order to reduce battery drain.
If you live in a region where winter is extremely cold,
an engine block heater will improve starting and
warming of the engine. Cons ult a dealer for details.
Bring the smart entry remote close to the ENGINE
START/STOP button if the battery in the smart entry
remote is weak.
2 If the Smart Entry Remote Battery is Weak
P. 577
The engine may not start if the smart entry remote is
subjected to strong radio waves.
Do not hold the ENGINE START/STOP button to
start the engine.
If the engine does not start, wait at least 30 seconds
before trying again.
Parking Brake
Brake Pedal
* Not available on all models

uuWhen Driving uStarting the Engine
436
Driving
■To stop the engine1Remote Engine Start*
While the engine is running, the vehicle will
automatically preconditi on inside the vehicle.
When it is warm outside:
•The heating and cooling system*/climate control
system* is activated in recirculation mode.
•The seat ventilation* is activated.
When it is cold outside:
•The defroster is activated at a moderately warm
temperature.
•The rear defogger and door mirror heaters* are
activated.
•The seat heaters* and heated steering wheel* are
activated. 2Heated Steering Wheel
* P. 180
2 Front Seat Heaters and Seat
Ventilation
* P. 182, 183
Press and hold the
button for one second.Go within the range, and try again.
Some exterior lights will not flash when the remote is out of
the keyless access system range.
The engine will not stop.
Some exterior lights flash once if the engine stops
successfully.
* Not available on all models

449
uuWhen Driving uFront Sensor Camera*
Driving
1Front Sensor Camera*
If the Some Driver Assist Systems Cannot
Operate: message appears:
•Use the heating and cooling system*/climate
control system* to cool down the interior and, if
necessary, also use defr oster mode with the air
flow directed towards the camera.
•Start driving the vehicle to lower the windshield
temperature, which cool s down the area around
the camera.
If the Some Driver Assist Systems Cannot
Operate: message appears:
•Park your vehicle in a sa fe place, and clean the
windshield. If the message does not disappear after
you have cleaned the winds hield and driven for a
while, have your vehicle checked by a dealer.
* Not available on all models

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

533
uuMaintenance Under the Hood uEngine Coolant
Continued
Maintenance
Engine Coolant
This coolant is premixed with 50% an tifreeze and 50% water. Do not add any
straight antifreeze or water.
We recommend you check the engine coolant level every time you refuel. Check the
reserve tank first. If it is completely empty, also check the coolant level in the
radiator. Add the engine coolant accordingly.
1.Remove the engine compartment cover.
2 Engine Compartment Cover P. 527
2.Check the amount of coolant in the reserve
tank.
3. If the coolant level is below the MIN mark,
add the specified coolant until it reaches
the MAX mark.
4. Inspect the cooling system for leaks.
Specified coolant: Honda Long Li fe Antifreeze/Coolant Type 2
■Reserve Tank
1Engine Coolant
NOTICE
Genuine Honda engine coolan t is a 50/50 mixture of
antifreeze and water that can withstand freezing at
temperatures as low as a bout -31°F (-35°C). If your
vehicle is consistently subjected to temperatures
below this, the concentration of antifreeze in the
coolant should be increased. Consult a dealer for
details.
If Honda antifreeze /coolant is not available, you may
use another major brand non- silicate coolant as a
temporary replacement. Check that it is a high quality
coolant recommended for aluminum engines.
Continued use of any non-Honda coolant can result
in corrosion, causing the cooling system to
malfunction or fail. Have the cooling system flushed
and refilled with Honda anti freeze/coolant as soon as
possible.
Do not add rust inhibitors or other additives to your
vehicle’s cooling system. They may not be compatible
with the coolant or with the engine components.
MAX
MIN

uuMaintenance Under the Hood uEngine Coolant
534
Maintenance
1. Make sure the engine and radiator are
cool.
2. Remove the engine compartment cover.
2 Engine Compartment Cover P. 527
3.Turn the radiator cap counterclockwise and
relieve any pressure in the cooling system.
Do not push the cap down when turning.
4. Push down and turn the radiator cap
counterclockwise to remove it.
5. The coolant level should be up to the base
of the filler neck. Add coolant if it is low.
6. Put the radiator cap back on, and tighten it
fully.
7. Pour coolant into the reserve tank until it
reaches the MAX mark. Put the cap back
on the reserve tank.
■Radiator1 Radiator
NOTICE
Pour the fluid slowly and ca refully so you do not spill
any. Clean up any spills immediately; they can
damage components in the engine compartment.
3WARNING
Removing the radiator cap while the
engine is hot can cause the coolant to spray
out, seriously scalding you.
Always let the engine and radiator cool
down before removing the radiator cap.Radiator
Cap

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