2019 HONDA CLARITY PLUG IN HYBRID Owners Manual

487uu Maintenance Under the Hood u Changing the Engine Oil and Oil Filter
Continued
Maintenance
Changing the Engine Oil and Oil FilterYou must change the engine oil and oil fi lter regularly in order to maintain the
engine's lubrication. The engine may be damaged if they are not changed regularly.
Turning the power system on automatically starts the en gine if the High Voltage
battery charge level gauge shows one segment or less. 2 High Voltage Battery Charge Level Gauge P. 123
To start the engine, the vehicl e needs to be in HV Charge.2 HV Button P. 16
Change the oil and filter in accordance with the mainte nance message on the driver
information interface.
1. Run the engine until it reaches normal
operating temperature, and then turn the
engine off.
u If necessary, drive the vehicle until the
engine turns on.
2. Open the hood and remove the engine oil
fill cap.
3. Remove the slotted head screws by
turning 90° counterclockwise on the
undercarriage and remove the under
cover. 1 Changing the Engine Oil and Oil Filter NOTICE
You may damage the environment if you do not
dispose of the oil in a suitable way. If you are
changing the oil by yourself , appropriately dispose of
the used oil. Put the oil in a sealed container and take
it to a recycling center. Do not throw the oil away
into a garbage can or onto the ground.19 CLARITY PHEV-31TRW6100.book 487 ページ ２０１８年１０月２５日　木曜日　午後２時２９分

uu Maintenance Under the Hood u Changing the Engine Oil and Oil Filter
488
Maintenance 4. Remove the drain bolt and washer from
the bottom of the engine, and drain the
oil into a suitable container.
5. Remove the oil filter and dispose of the
remaining oil.
6. Check that the filter ga sket is not stuck to
the engine contact surface.
u If it is stuck, you must detach it.
7. Wipe away dirt and dust adhering to the
contact surface of the engine block, and
install a new oil filter.
u Apply a light coat of new engine oil to
the filter gasket.
8. Put a new washer on the drain bolt, then
reinstall the drain bolt.
u Tightening torque:
30 lbf∙ft (40 N∙m, 4.0 kgf∙m)
9. Pour the recommended engine oil into the
engine.
u Engine oil change capacity (including
filter):
3.5 US qt (3.3 L) 1 Changing the Engine Oil and Oil Filter
You will need a special wrench to replace the oil
filter. You can buy this wr ench from an authorized
Honda Clarity Plug-In Hybrid dealer.
When installing the new oil filter, follow the
instructions supplied with the oil filter.
Drain BoltWasher
Oil Filter19 CLARITY PHEV-31TRW6100.book 488 ページ ２０１８年１０月２５日　木曜日　午後２時２９分

489uu Maintenance Under the Hood u Changing the Engine Oil and Oil Filter
Maintenance
10. Reinstall the engine oil fill cap securely and
start the engine.
11. Run the engine for a few minutes, and
then check that there is no leak from the
drain bolt or oil filter.
12. Stop the engine, wait for three minutes,
and then check the oil level on the
dipstick.
u If necessary, add more engine oil. 1 Changing the Engine Oil and 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.19 CLARITY PHEV-31TRW6100.book 489 ページ ２０１８年１０月２５日　木曜日　午後２時２９分

490 uu Maintenance Under the Hood u Engine Coolant
Maintenance Engine Coolant This coolant is premixed with 50% antifreeze and 50% water. Do not add any
straight antifreeze or water.
We recommend you check the engine coolan t level every time you refuel or you
charge the High Voltage battery. Check the re serve tank first. If it is completely
empty, also check the coolant level in the radiator. Add the engine coolant
accordingly.
1. Make sure the engine and radiator are
cool.
2. Check the amount of c oolant in the reserve
tank.
u If the coolant level is below the MIN
mark, add the specified coolant until it
reaches the MAX mark.
3. Inspect the cooling system for leaks.Specified coolant: Honda Long Life Antifreeze/Coolant Type 2
■ Reserve Tank 1 Engine 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 about −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 an authorized
Honda Clarity Plug-In Hybr id dealer for details.
If Honda antifreeze /coolant is not available, you may
use another major brand of 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.Reserve
TankMAX
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491uu Maintenance Under the Hood u Engine Coolant
Maintenance
1. Make sure the engine and radiator are
cool.
2. Turn the radiator cap 1/8 turn counter-
clockwise and relieve any pressure in the
cooling system.
3. Push down and turn the radiator cap
counter-clockwise to remove it.
4. The coolant level should be up to the base
of the filler neck. Add coolant if it is low.
5. Put the radiator cap back on, and tighten it
fully.■ Radiator 1 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.
3
WARNING 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 Cap19 CLARITY PHEV-31TRW6100.book 491 ページ ２０１８年１０月２５日　木曜日　午後２時２９分

492 uu Maintenance Under the Hood u Cooling System
Maintenance Cooling System Coolant is used to reduce the temperature of the high voltage battery and inverter
coolant. When checking the c oolant level, make sure to follow the procedures listed
below. If the coolant level is below the MIN mark, have your vehicle inspected by an
authorized Honda Clarity Plug-In Hybrid dealer.
1. Check the fluid level in the tank.
2. If the coolant level has dropped below the
MIN level, have your vehicle serviced at an
authorized Honda Clarity Plug-In Hybrid
dealer.
u Only a properly trained technician can
refill the coolant an d check the system
for leaks.Specified coolant: Honda Long Life Antifreeze/Coolant Type 2
■ Checking the Inverter Coolant Level 1 Cooling System NOTICE
Genuine Honda engine coolan t is a 50/50 mixture of
antifreeze and water that can withstand freezing at
temperatures as low as about −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 an authorized
Honda Clarity Plug-In Hybr id dealer for details.
Only use the genuine Honda coolant.
Expansion Tank MAX
MIN19 CLARITY PHEV-31TRW6100.book 492 ページ ２０１８年１０月２５日　木曜日　午後２時２９分

493uu Maintenance Under the Hood u Cooling System
Maintenance
1. Check the fluid level in the tank from the
window.
2. If the coolant level has dropped below the
MIN level, have your ve hicle serviced at an
authorized Honda Clarity Plug-In Hybrid
dealer.
u Only a properly trained technician can
refill the coolant and check the system
for leaks.■ Checking the Coolant Level for the High Voltage Battery
and Related Parts MAX
MIN Window
Expansion Tank19 CLARITY PHEV-31TRW6100.book 493 ページ ２０１８年１０月２５日　木曜日　午後２時２９分

494 uu Maintenance Under the Hood u Transmission Fluid
Maintenance Transmission Fluid Have an authorized Honda Clarity Plug-In Hybrid dealer check the fluid level and
replace if necessary.
Do not attempt to check or change the transmission fluid yourself.
Brake Fluid The fluid level should be between the MIN
and MAX marks on the side of the reserve
tank.■ Transmission Fluid Specified fluid: Honda ATF DW-1 (automatic transmission fluid)
Specified fluid: Honda Heavy Duty Brake Fluid DOT 3
■ Checking the Brake Fluid 1 Transmission Fluid NOTICE
Do not mix Honda ATF DW-1 with other
transmission fluids.
Using a transmission flui d other than Honda ATF
DW-1 may adversely af fect the operation and
durability of your vehicle’ s transmission, and damage
the transmission.
Any damage caused by usi ng a transmission fluid that
is not equivalent to Honda ATF DW-1 is not covered
by Honda’s new vehi cle limited warranty.
1 Brake Fluid NOTICE
Brake fluid marked DOT 5 is not compatible with your
vehicle’s braking system and can cause extensive
damage.
If the specified brake fluid is not available, you should
use only DOT 3 or DOT 4 fluid from a sealed
container as a tem porary replacement.
Using any non-Honda brake fluid can cause corrosion
and decrease the longevity of the system. Have the
brake system flushed and re filled with Honda Heavy
Duty Brake Fluid DOT 3 as soon as possible.
If the brake fluid level is at or below the MIN mark,
have an authorized Hond a Clarity Plug-In Hybrid
dealer inspect the vehicle for leaks or worn brake
pads as soon as possible.Brake Reserve Tank MAX
MIN19 CLARITY PHEV-31TRW6100.book 494 ページ ２０１８年１０月２５日　木曜日　午後２時２９分